Our Projects | Central Technical Supplies

Our Projects


Autoclaves

Installation of 26 Autoclaves Country Wide

Ministry of Health and Social Services

2015

CTS was awarded four tenders in 2015, to supply, deliver to site, install, test and commission of autoclaves throughout Namibia.

In addition to the 160L Steri Tech autoclaves, water softeners were installed to increase the life span of each unit and reduce overall maintenance cost.

A number of installation teams worked hard to complete the project within the stringent timeframe set by the client. Each site came with its own challenges such as:

  1. Removing of existing units that were beyond repair
  2. Low supply water pressure
  3. Space limitations where the new units were to be installed
  4. Breaking out of walls to fit new autoclave
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Supply, Delivery and Installation of 2 Autoclaves and an Effluent Treatment System for Central Veterinary Laboratories

Ministry of Agriculture

2015

CTS was awarded the tender to supply, deliver to site, installation, testing and commission of two autoclaves and an effluent treatment system for CVL.

CVL is classified as a BSL 3 laboratory.  BSL 3 means a biosafety level of 3.  This is a level of bio-containment precautions, required to isolate dangerous agents, which may cause serious diseases.  This includes various bacteria, viruses and parasites.  CVL required autoclaves with a BSL3 seal approval, as well as an effluent treatment system, to decontaminate a wide range of aqueous liquids. 

With our extensive knowledge in sterilization and infection control, CTS installed suitable autoclaves with BSL3 seals.  In addition to the autoclaves, an effluent treatment system was also installed.  This system collects the effluent from the autoclaves, sinks and wash basins, and collects it in one tank.  Once a certain level has been reached, a second tank will collect the effluent, while sterilization begins in the first tank.  In this way, collection of the effluent is not delayed whilst sterilization is being performed in one of the tanks.  Through this system, the highest level of decontamination is achieved, ensuring a safe environment.

CTS ensures that your system is designed for your requirements.  With our years of experience, we not only install, but also service and maintain the equipment today, and in the years to come.

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Hot Water

Supply and Installation of a Hot Water Plant at Ongwediva Meat Processing Facitly

Ministry of Agriculture

2020

A modern hot water plant was installed based on heat pump technology. Stiebel Eltron storage tanks as well as heat pumps are supplied that are extremely energy efficient and long life expectancy while at the same time low on maintenance. Further energy savings are achieved as the system is connected to heat recovery units as part of the refrigeration plant.

The challenge of such a system is to guarantee even loading and unloading of the tanks with water to guarantee a uniform temperature distribution in all tanks. This has been achieved by careful piping planing based on the Tichelmann principal.

The system comprises of the following:

  • 6x 1000 L buffer tanks
  • 2x 23kW heat pump units.
  • various pumps and control unit


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Design, Supply and Install of a new Hot Water System for Lüderitz Nest Hotel

Lüderitz Nest Hotel

2019

After close to 20 years of operation, the existing electrically heated hot water boilers were replaced. A modern, energy efficient system supplied by Stiebel Eltron was installed. The system comprises of the following:

2x heat pumps
5x 1000L hot water tanks (with electrical backup)
1x Control panel with remote monitoring and SMS alarm functionality.
2x booster pumps to feed the hotel with water during times when municipal supply is shut off

The installation has been achieved in a 3 week period. All works have been carried out with minimal interruptions to the hot water supply to the hotel. Remote monitoring of the plant in included to assist the client with possible troubleshooting, thus avoiding unnecessary trips to Lüderitz. SMS communication allows the quick reaction times of hotel maintenance personnel to act in cases of municipal water loss.

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Installation of new Steam Boiler at Hartlief Windhoek

Hartlief

2012

A 1.5t boiler was installed at the Hartlief factory to cater for the growing needs of steam. The project included:

  • Installation of new steam boiler next to the existing boiler
  • Modifications to HFO line to cater for new boiler
  • Commissioning

Over the past year's minor refurbishment, maintenance and upgrading projects where completed as well such as:

  • Installation of condensate pumps to reduce back pressure of equipment inside the factory
  • Raising current condensate storage tanks to increase head pressure for feed water pumps
  • Three monthly service of both steam boiler and yearly inspection with Ministry of Labor inspectors
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Farmers Meat Market Mariental goes green

Farmers Meat Market Mariental

2012

Central Technical Supplies (Pty) Ltd. – Geiger Engineering (CTS) was approached by Farmers Meat Market Mariental to design, supply and install a solar water heating system with the aim to reduce the monthly diesel consumption as two diesel boilers are operated to heat water up to 82 deg. C for production purposes.

The water requirements of the abattoir are as follows:

  1. 2,000 liter/hour @ 45 C°
  2. 3,000 liter/hour @ 60 C°
  3. 500 liter/hour @ 82 C°

This adds up to a total daily water requirement at 60 deg. C of roughly 25,000 liter.

The system is design such as to preheat water from 18 deg. C to between 50 deg. C and 60 deg. C before supplying the diesel boiler system, thus reducing runtime and diesel consumption of the diesel boilers. A 20,000L stainless steel tank (non pressure tank) manufactured locally according to CTS design, acts as the buffer tank for the daily water requirement. A total of 120 flat plate collectors supplied by Solsquare Namibia with a total surface area of 300 m2 are connected by means of a 450kW Alfa Laval flat plate heat exchanger to the water tank.

A set of two Calpeda circulation pumps connected to Danfoss variable speed drives and a timer circuit guarantees at all times that the heat from the collectors is effectively transported to the water tank. Flow as well as temperature monitoring on all four ports of the heat exchanger make it possible to determine the instantaneous as well as accumulated kWh produced from the collector field.

Furthermore additional heating energy is obtained from the ammonia refrigeration plant. A heat exchanger is installed on the ammonia discharge side before the existing cooling towers to be able to heat the water during night time as well, as this is the time when the refrigeration plant runs at full capacity to cool down the newly slaughtered meat in the cold rooms. Again flow control and temperature monitoring on the hot water side of the heat exchanger accurately indicate heating energy obtained from the refrigeration plant.
A total of four pump sets have been installed and pumps are cycled on a 24 hour basis in automatic mode. Should at any given time a pump fail, the system can be switched to manual mode to be able to repair the pump without system down time and a resulting increase in diesel consumption.

All systems components are sized such as to allow for future heating capacity upgrades should it be required.

After a year of operation, the plant is performing better than expected and the client is able to safe nearly N$ 60,000 per month on diesel costs, bringing the payback period of the entire system down to below two years. This clearly shows that solar energy, be it for heating or for electricity production, surely is the way forward for a cleaner and greener future for generations to come. CTS is proud to be part of making Namibia and the world a better place for our grandchildren to live in.

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Supply, Delivery and Installation of a Gas Fired Water Heating System for Hilton Hotel Windhoek

Hilton Hotel Windhoek

2010

CTS was awarded the tender to install a water heating system for the Hilton Hotel Windhoek.

The system was installed according to the following specifications:

•    2x 250kW gas fired hot water boiler

•    2x 6800 liter hot water storage tank (also known as calorifier)

•    1x Danfoss Aqua drive 11kW for glycol circulation pump control

•    2x Automatic bypass valves to control water temperature inside tank

•    4x Hot water circulation pumps

The boilers as well as glycol circulation pumps and one hot water storage tank were installed in the boiler room located in the upper basement of the hotel. The second hot water storage tank is installed on the 9th floor of the Hilton Hotel. A glycol circulation system connects the two calorifier with the two gas fired hot water boilers. The glycol circulation pumps are controlled from one Danfoss Aqua drive with cascading functionality to control the pumping speed depending on the temperature in the glycol line.

Each hot water boiler is cycled on a 24 hour basis, should the glycol temperature fall below a predetermined threshold for certain period of time the second boiler will start automatically.

Automatic bypass valves guarantee that the water temperature of each calorifier is kept at a constant 60 – 65 degrees Celsius.


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Laundry

New Laundry for Palmwag Lodge, Damaraland

Palmwag Lodge

2017

This paradise in the Damaraland is a popular tourist destination. Being located in a remote area, they demanded reliable machines, with the highest quality, that are also versatile. Miele machines are able to tackle everyday laundry problems – safely, conveniently and economically.

With the many years of experience, CTS provided Palmwag Lodge with a complete solution. We know that reliability is a key requirement, to ensure trouble free working, while maintaining the highest of standards. CTS, the ideal solution to any situation.

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A La Mer Laundry - Swakopmund

for A La Mer Laundry

2017

When A La Mer Hotel in Swakopmund decided to expand, they approached CTS with a unique challenge: to create a functional laundry that was both energy and water efficient, and would also fit into a small space, while being whisper quiet, so as not to disturb any guests. In addition, the laundry has to perform excellently, producing quality wash, tumbling and ironing results. Only one brand came to mind: Miele.

Miele recently launched new bench mark machines, which have short program cycles, excellent spin performance, a redesigned patented honeycomb drum and have low consumption values. A La Mer Hotel was the first in Namibia to purchase these new machines.

CTS installed washer extractors with water recovery units, as well as automatic dosing systems, to ensure the best quality wash, every time. The tumble drier has an air recycling system, saving up to 60% of energy. And with a matching drying ironer, optimum finishing results are achieved. Small accessories made this laundry a complete turn key solution.

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Engineer, Supply and Install new Laundry Solution for Strand Hotel

Strand Hotel

2017

O&L Leisure is well known for their high-quality lodges and hotels. Guests all over the world expect the best standards, which start with flawless bed and table linen and toweling with a soft handle. Carefully selected and exquisitely finished laundry is good advertising for hotel standards. And, at the same time, laundry care is a significant investment. It is therefore all the more important that hotel laundry is long-lasting and durable, underlining care and attention to perfection.

CTS designed and installed the full turn key solution for Strand Hotel, which included Miele washers, tumblers and drying ironers, as well as various accessories, including a form finisher. Miele professional machines are custom-made to meet the individual needs, and they offer the perfect solution with optimum economy.

Strand Hotel can now pride themselves with a state of the art laundry. CTS, a complete service from just one source.


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Supply, delivery and installation of a new Laundry for Lady Pohamba Private Hospital

Lady Pohamba Private Hospital

2015

CTS was instructed to supply, deliver, install, test and commission laundry equipment for Lady Pohamba Private Hospital in 2015. Situated in Windhoek’s Kleine Kuppe area, this new and stunning 134-bed hospital caters for a wide variety of patients.

When it comes to Hospital textiles, cleanliness and perfect hygiene is of the essence. The challenge is to safely wash large quantities of used and soiled fabrics, while ensuring consistent, hygienic cleaning, maximum longevity and shortened wash times. As Namibia is facing a water crisis, special attention needs to be given to using as little water as possible. Our solution was Miele.

Miele offers a wide range of machines with cutting edge technology and specialized wash programs. With their patented stainless steel Honeycomb Drum, the specially designed drum ribs allow the water to saturate the laundry very quickly, reducing washing times. The high spin speeds with a G-factor of up to 500 make for optimum water extraction. There are also connections for detergent dispensers, ensuring that the same amount of detergent is used for each wash. A water recovery unit saves up to 30% of the water consumption. The tumble dryers are equipped with a heat-pump system, with results in a reduction of 60% of energy consumption.

Thanks to the residual moisture level of approximately 50% achieved by Miele’s washer-extractors, bed linen does not need to be dried any further before it is fed into a rotary ironer with a high heat output. Miele’s technology guarantees economy and quality, and actively contribute towards protecting our health and environment.

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Supply, Delivery and Installation of Laundry Equipment for the Husab Mine

Husab Uranium Mine

2015

CTS was instructed to supply, deliver, install, test and commission laundry equipment for the Mine Complex Change House, Plant Complex Change House and the FPR Change House at the Husab Mine in 2015.

The Husab mine has to process nearly 2 000 overalls and towels on a daily basis. Emphasis was made on equipment that is energy efficient, safe to operate and cost effective to maintain.

Miele equipment fulfills every requirement when it comes to the economical processing of large amounts of laundry. Miele’s tried and tested programs ensure the correct washing process for every type of material. The tumble driers complement the washer extractors and are highly economical, thanks to short running times. Thus you have a perfect solution to process large amounts of laundry, fast, hygienically and economically.

CTS installed washer extractors fitted with water recovery units and heat pump tumble driers. Laundry-care requirements vary significantly according to the customer’s needs. Whichever your requirement, CTS can offer you the ideal solution.

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Part Refurbishment for Rundu State Hospital Laundry

Ministry Of Health And Social Services

2014

CTS removed old and obsolete laundry equipment and installed new machines.

The installed equipment consisted of:

  1. 2 x new Primus FS40 high speed washer extractors
  2. 2 x Maytag energy saving tumble dryers
  3. 1 x Miele through-feed drying ironers
  4. inculding laundry trolleys, ironing trolleys and other small accessories

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Refurbishment of Outapi State Hospital Laundry

Ministry Of Health And Social Services

2014

CTS removed old and obsolete laundry equipment and installed new machines.

The installed equipment sonsisted of:

  • 3 x new Primus RS35 washer extractors
  • 3 x Maytag energy saving tumble dryers
  • 2 x Miele through-feed drying ironers
  • including laundry trolleys, ironing trolleys, hand-irons and ironing tables

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Supply and Installation of Laundry Equipment at Katima Mulilo State Hospital

Ministry Of Health And Social Services

2011

CTS was awarded the tender in July 2011 for Katima Mulilo’s Hospital laundry. The scope of the work included the supply, manufacture and assembly, delivery to site, installation, testing, commissioning and maintenance of laundry equipment.

Safety is born of experience. In the field of clinical practice, medical know-how and professional laundry care ensure optimum treatment and care of patients. For this, systematic cleaning, disinfection, drying and sterilization of linen and operating garments are prerequisites for avoiding risk to both patients and staff.

Katima Mulilo’s Hospital has to process over 1 ton of laundry per day. Our high speed washer extractors have a spin factor of 830rpm, greatly reducing tumbling time. With built in soap dispensers, the correct amount of soap is used each time, and the perforated lifting ribs mean more mechanical action and lower water consumption. The high speed washers significantly reduce water and electricity consumption, and still ensure hygienically clean laundry.

Miele offer rotary ironers with roller diameters ranging from 210 to 500 mm. Aluminium heater plates instead of steel guarantee an excellent distribution of heat and considerably reduced heating up times. The foot control ensures that the roller can be easily stopped, eg. for steaming.

A pneumatic lifting device creates a high pressure ironing action for an excellent finish. Katima Mulilo’s Hospital has the largest Miele rotary ironers in Namibia.

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Supply and Installation of Laundry Equipment at Okankolo Heath Care Centre

Ministry Of Health And Social Services

2010

CTS was awarded the tender in February 2010 for Okankolo Health Centre’s laundry.

The scope of the work included the supply, manufacture and assembly, delivery to site, installation, testing, commissioning and maintenance of laundry equipment.

Health Centers have to ensure that their laundry is hygienically clean. Our washing machines have a special sluicing program, which is ideal for blood stained linen and operation gowns. After the sluicing program, washing resumes as normal at higher temperatures, ensuring that all bacteria are destroyed, leaving laundry clean and safe to be used again. Our washers can be equipped with a second drain valve to recycle drain water, making them environmentally friendly.

Using roller ironers further sterilizes the linen; ensuring optimum care is taken for patients as well as Health Center staff.

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Other

Refurbishment of the Van-Eck Transformer Oil Storage Facility

Nampower

2015

CTS was successful in winning the tender for the refurbishment of the transformer oil storage plant at the van Eck Power station. The project included the following:

  1. Cleaning and painting of all oil tanks
  2. Automating the entire plant
  3. Installation of oil filtration system

Old as well as new transformer oil is stored in different tanks. Color codes on the tank clearly indicate what type of oil is stored in each tank. Old oil – oil removed from transformers during service – is stored until enough has been collected before it is sold.

Clean/new oil is stored in the other thanks that will be used for refilling transformers during routine services. Humidity tends to form inside the oil when it is stored for longer periods. This humidity as well as other dirt particles are removed my means of the Alfa Laval Oil Filtration plant. The process is fully automated and PLC controlled. The operator merely is required to enter the quantity of oil that is to be filtered.

Radar level sensors are installed in each tank to monitor quantity on hand. Maintenance free breathers on each tank prevent access of water moisture into the tank and the buildup of dangerous gases.

A Coriolis custody transfer meter accurately indicates the quantity of old oil the is transferred to third party tankers for selling purposes.

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Photovoltaic

Design, Supply and Installation of an Off-Grid PV System at Farm Heinrichsfelde

Private

2019

A 7,3 kWp off-grid PV system was installed at the farm Heinrichsfelde in the Aus area with a Lithium-ion battery. The system is able to power an entire farmhouse. Remote monitorng and supervision is included.

System Specifications are:

  • 24 x 305W Renesola PV modules
  • 2x Victron MPPT 150/85
  • 1x Victron Quattro 48/10000
  • 1x BlueNova Lithium-ion battery 48V-24kWh
  • Roof mounted with structure for IBR roof sheeting
  • AC surge and lightning protection
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Design, Supply and Installation of a Grid Tied PV System for Klein Aus Vista

Klein Aus Vista

2019

A 71kW grid tied (Nampower ) PV system was installed at the Klein-Aus Vista Lodge just outside Aus. Remote Monitoring and Energy meter is included to obtain precise information about own consumption as well as exported power. This aids in future electrical reticulation upgrades and designs.

System Specifications are:

  • 240 x 295W Canadian Solar PV modules
  •  3 x Fronius Symo 20.0 – 3 Grid Inverter
  • Shed roof mounting with structure for IBR roof sheeting
  • AC & DC surge and Lightning protection
  • Configured for remote monitoring
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Design, Supply and Installation of a Grid Tied PV System in Windhoek

Private

2019

A new 7,1kWp Solar Home System for Net Metering was installed at a private residence in Windhoek.

System Specifications are:

  • Grid connected with Net Metering
  • 24 x 295W Canadian Solar PV modules. Total 7,1kWp.
  • 1 x Fronius Primo 8,2-1
  • Roof mounted with IBR sheeting
  • Remote Monitoring and Energy Meter.
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Installation of 4 Containerized off-grid PV systems in the Otjozondjupa Region

Ministry of Mines and Energy

2019

Central Technical Supplies was once again awarded the tender to electrify 4 remote localities in the Otjozondjupa Region of Namibia. Custom build containers where installed on site with SMA Sunny Island 8.0 inverter installed. In addition the offered lead acid battery technology has been replaced by state of the art lithium batteries reducing system maintenance. The use of AC coupled technology did allow for the SunnyBoy solar inverter to be in installed inside relevant buildings on which PV modules are mounted. All components are interlinked by means of wireless technology to allow for remote monitoring where GSM signal is of sufficient strength. System sizes vary form 3kW, 12kW, 15kW to 20kW of PV power while inverters are as much as 3 in a single phase cluster.

Sites that were electrified are:

  • Nhoma
  • Aasvoel Nes
  • Kanovlei
  • Grashoek


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Small off-grid PV Systems

Private

2018

Various small off-grid PV systems, also referred to SHS (Solar Home Systems) have been supplied country wide. These systems are typically based on small high efficiency lithium ion batteries as storage solution and Victron components such as solar charge regulator, inverter and monitoring devices.

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Hanns Seidel Foundation -Foundation - Electrification of 2 School in the Ohangwena Region

Hanns Seidel Foundation

2018

CTS has electrified two schools in remote northern Namibia funded by the Hanns Seidel Foundation with the aim to provide electricity for lighting, thus extending learning hours for learners well into the night. Both systems are based on BlueNova 4kWh lithium ion batteries, Victron Energy charge regulators and inverter technology. Remote monitoring is possible via the integrated Colour Control GX from Victron. Special attention has been given to the system configuration to prevent total battery shutdown. This is achieved by switching the inverter off at a predefined battery state of charge (typically 20%) and only reactivate the inverter once the batteries are charged beyond a predetermined threshold.

The systems where officially inaugurated by the Ambassador of Germany in June 2018.

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Upgrade and Expansion of an Off-Grid PV System - Farm Ombirisu

Private

2018

An existing off-grid solar PV system was expanded to a total of 4,44kW on the farm Ombirisu north of Okahandja and the battery was upgraded to a Lithium-ion technology.

Final System Specifications:

  • 6 x 295W Canadian Solar have been added to an existing PV array to deliver a final capacity of 4,44kW
  • Replacing old charge regulators with 3 x Victron MPPT 150/70
  • Replace old battery with 1 x BlueNova Lithium-ion battery 24V-24kWh
  • Pole mounted solar array
  • Online connection with remote access
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Design, Supply and Installation of a 200kW Gried-Tied PV System in Windhoek

Quality Tyres Namibia

2018

A 200kW PV peak grid tied PV system was installed at Quality Tyres Lafrenz Industrial Area. Remote monitoring of all 10 inverter allows for early fault detection and system degradation as well as maintenance planing.

System Specifications are:

  • 680x 295W Canadian Solar modules
  • 10x Fronius Symo 20.0-3 Grid Inverter
  • Roof mounting structure for IBR roof sheeting
  • AC surge protection
  • configured for remote monitoring
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17kW Grid Tied Photovoltaic System

Stier Vente Chartered Accountant

2017

In early 2017 Stier Vente Chartered Accountant did take the decision to move to renewable energy. A 17kW grid feed system was installed on the roof of the office building to reduce the monthly electricity bill.

A total of 67 260W PV modules and a SMA SunnyTripower 17kW inverter was installed. Remote monitoring allows CTS to advise the client on possible faults and recommended actions to be taken.

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Pioneerspark Medical Centre

Pioneerspark Medical Centre

2017

Pionieerspark Medical Centre can call themselves a proud owner of a 38kW photovoltaic grid feed system. Considerable savings on the monthly electricity bill are achieved as most of the electricity requirements are produced directly at the customer. Excess energy is fed back into the grid and credited on the monthly electricity bill by City of Windhoek.

The system consists of 144 265W PV modules mounted flat on the roof of the building with 2 Fronius three phase grid feed inverters and remote monitoring via the Fronius App on the cell phone. Remote monitoring allows CTS to advise the client on possible faults and recommended actions to be taken.

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Installation of Containerized Off-Grid PV Systems in the Otjozondjupa Region

Ministry of Mines and Energy

2015

Three localities in the Otjozondjupa region where successfully electrified by means of Off-Grid PV containers. The system sizes varied from 6kW, 12kW to 25kW of PV power. PV modules where installed on roofs of nearby houses, batteries, inverter/charger and switchgear are located in our proven design of prefabricated containers to keep the components cool, even in the hottest of climates.

The system is an AC coupled PV system with SMA Sunny Island (SI 8.0) inverter and SunnyBoys of various sizes. Communication between all components is based on a wireless RS485 solution from Phoenix Contact with a distance covered of 1.5km.

Sites that were electrified in the Otjozondjupa region are:

  • Rooidag Hek 
  • M’Kata
  • Kukurushe
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Hybrid photovoltaic system for Gcwatjinga Clinic

Gcwatjinga Clinic

2015

An off gird PV system with generator back up was installed at the Gcwatjinga clinic south east of Rundu. The system comprises of the following components:

  • 6.24 kW PV array
  • 2x Victron BueSolar 150V/70A MPPT regulator
  • 600Ah Battery capacity
  • Inverter/Charger, Victron Multi, 48V/8000VA
  • System Monitoring (BMV700, Color Control GX)

The clinic was connected to the grid, which at time of system design and installation the grid connection plans were unknown to the engineer. As the clinic has PV installed, the existing system has been configured such as to allow for grid connection once the batteries reach a predefined SOC. This guarantees a continuous supply of power to the clinic and nurse houses.

In addition to the grid, a backup generator is incorporated in case PV as well as grid failure occur.

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Hybrid photovoltaic system for Elavi Clinic

Elavi Clinic

2015

The installed photovoltaic system at Elavi Clinic caters for the power supply to the clinic as well as the nurse houses. A 6.2kW PV module array generates enough power for the energy requirements. Should this not be sufficient the batteries can be charged by a backup generator.

The system consists of the following:

  • 6.24 kW PV array
  • 2x Victron BueSolar 150V/70A MPPT regulator
  • 600Ah Battery capacity
  • Inverter/Charger, Victron Multi, 48V/8000VA
  • System Monitoring (BMV700, Color Control GX)
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Containerized off-grid solar solution for the Kunene Region

Ministry of Mines and Energy

2014

After successful completion of the Omusati off grid electrification project, CTS was successful in winning the bid for the second phase of containerized PV solutions for the Kunene region. With the experience gained from phase 1, the containers were optimized in many ways. The final design consisted custom build 20ft container by Namspace in Swakopmund.

Sites that were electrified in the Kunene region are:

  • Otjitjekua School
  • Otjiu School
  • Otjiu Hostel
  • Epupa School

The project included the following:

  • Upgrading of all government building wiring as per national standard for 4 sites in the Kunene region:
  • Manufacture, supply and install container power units for these sites.

The power containers consisted of ca 2.8kW of PV modules installed on the roof as well as 4,500 Ah of battery capacity. Five kVA inverter charger and two 70A BlueSolar Charge regulator all from Victron Energy complete the system. Remote monitoring of all sites is achieved by using the Victron Color Control GX unit.

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Containerized off-grid solar solution for the Omusati Region

Ministry of Mines and Energy

2013

CTS was awarded the first ever containerized off-grid solar electrification tender for the Ministry of Mines and Energy beginning of 2013. This project entailed:

  • Upgrading of all government building wiring as per national standard for 9 sites in the Omusati region
  • Manufacture, supply and install container power units for these sites.

The power containers consisted of ca 2.8kW of PV modules installed on the roof as well as 3,000 to 4,500 Ah of battery capacity depending on site requirements. Five KVA inverter charger and two 70A Blue Solar Charge regulator all from Victron Energy complete the system.

With a total of nine containers, school, hostels and other government buildings were electrified. Each container was subdivided into two rooms for batteries and inverter technology respectively.

With our 36T/m crane truck CTS was able to transport the container to site, navigating through thick sand with ease.

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Photovoltaic Farm System with Generator Backup

Private

2013

This is a typical photovoltaic (PV) medium scale farm system found on many farms around Namibia. Over the past three years this system grew in PV size from 350Wpeak to ~1200Wpeak.

System specs are:

  • PV modules with a total capacity of 1220Wpeak
  • 1200VA, 24V Inverter charger
  • 40A Solar Charge Regulator
  • 360Ah battery bank@24V
  • Battery Monitor showing: state of charge (%), charging/discharging current (A), Battery Voltage (V) and time to go (h)
  • Switchgear for submersible pump control

The PV modules are mounted on frames facing true north for optimal energy harvesting. During times of limited sunshine, especially the rainy season, battery charging can be increased by starting the generator. Should the AC load increase behind the inverter rating, the generator can support the system to cater for the increased load. No automatic generator start function is included.

Furthermore a second PV system for the Farm workers has been installed to cater for lighting and a TV.

  • 2x 90Wpeak PV modules
  • 20A Solar Charge Regulator
  • 2x 105Ah batteries
  • 350VA, 12V inverter
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6kw grid feed photovoltaic system installed in Klein Windhoek

Private

2011

CTS was approached by a senior resident of Klein Windhoek to install a grid-tied photovoltaic system with the aim to cut back on the monthly electricity bill. The system included:

  • 42x 130W photovoltaic modules and mounting structure
  • 1x 6kW grid tied inverter

The system is designed such as to generate an estimated 900kWh per month.

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Weather Stations

Manufacture, Supply and Installation of 3 Automatic Weather Stations in Northern Namibia

Ministry of Agriculture

2019

Ministry of Agriculture through, through SASSCAL funding, did acquire 3 automatic weather stations in 2018 which where finally installed in 2019 after sites have been determined. These stations from part of the existing SASSCAL weather station network that has been established over the past years. All stations conform to SASSCAL requirements and are inline with WMO standards.

The stations are installed at :

  • Dudukabe (Zambezi)
  • Okalongo (Ohangwena)
  • Omafo (Ohangwena)


Station info can be obtained from www.sasscalweathernet.org


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Supply and Installation of 3 Automatic Weather Stations in the Kunene Region

University of Hamburg

2017

The University of Hamburg approached CTS directly with the request to quote and subsequently manufacture and install 3 automatic weather stations at:

  • Khorixas
  • Kaoko Otavi
  • Okangwati

Once again, satellite communication has been chosen, this time not because of GSM not being available, but to reduce future cost of the stations as satellite communication for these stations has got no costs associated.

In addition to the basic data measured:

  • Wind speed
  • Wind direction
  • Humidity
  • Air Temperature
  • Irradiance
  • Barometric pressure
  • Ground Temperature
  • Rain
  • Leaf wetness

The stations are equipped with a WLAN interface. This allows the connection of 49″ SmartTV to be connected to each station to display the current weather inside close by offices.

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Supply of Solar Resource Measurement Station to NUST

Namibia University of Science and Technology

2016

Central Technical Supplies was approached by the University of Stellenbosch to take part in a tender to supply a solar resource measurement station to the Namibia University of Science and Technology in Windhoek.

We were successful in winning the tender. The station is based on the Kipp and Zonen Solys 2 sun tracker with CMP 10 Pyranometer and CHP1 Pyrheliometer.

The station is based on the CR1000 logger from Campbell Scientific and measures wind speed and direction as well as ambient temperature, humidity and rain in addition to the solar resource data.

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Installation of 5 Automatic Weather Stations in Botswana with Satellite Communication

University of Hamburg

2015

Based on our excellent service and knowledge we have rendered to the Botswana Meteorological Department as well as University of Hamburg, CTS was able to secure the 2nd Phase of the manufacture, supply and installation of automatic weather stations in Botswana.

The stations supplied to make use of satellite communication due to the extreme remoteness of the sites, these were:

  • Mababe (Savuti Marsh)
  • Tubu (Okavango)
  • Baines Drift (Eastern Botswana)
  • Xade (Central Kalahari Game Park)
  • Ngwaltle (Western Botswana)

These stations are not located at any Meteorological Department property, thus fences had to be erected for protection against animals.

Station design is based on our well proven tripod mast with all relevant sensors and a CR1000 logger as the processing unit. Data is transmitted at fixed timeslots allocated by EUMETSAT (Germany) on an hourly basis. Satellite transmission is based on a fire and forget principle, thus no remote maintenance can be done.

Weather data can be found at: http://www.sasscalweathernet.org .

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Oranjemund Airport - Supply, Install and Commission of an Aviation Weather Monitoring System

DeBeers Marine Namibia

2015

DeBeers Namibia published a tender for the supply and installation of a weather monitoring system at the Oranjemund Airport. CTS was awarded the tender based on price, knowledge of the meteorological measuring equipment as well as quality of products. At time of installation the station was the most advanced aviation weather station in Namibia.

Technical Details of the system installed:

  • Ceilometer at end of runway 20 to measure cloud height at three levels up to 7,500m
  • Runway Visibility and Present Weather sensor at stop end of runway 20.
  • Present weather sensor monitors 7 different types of precipitation
  • visibility sensor takes background luminescence into account
  • Wind speed and direction a touchdown runway 20.
  • Wind speed and direction, rain as well as barometric pressure at stop end runway 20
  • AviMet server for processing of all data
  • 3 workstations spread along the buildings for weather monitoring and supervision purposes
  • ATIS voice system transmitting on aviation frequency as well as telephone dial in the current weather conditions

All communication between the equipment and the AviMet server is based on wireless transmission to reduce cabling costs.

The weather information can be picked up rough 100 NM away from the airport by all approaching aircraft.

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Installation of 10 Automatic Weather Stations in Botswana

University of Hamburg

2014

CTS was approached by the Botswana Meteorological Department and the University of Hamburg with the request to install automatic weather stations across Botswana. A total of 10 stations were engineered and build at our workshop in Windhoek prior to installation commencement. With our own tower design, the installation time is reduced to nearly 8 hours per tower.

The stations are equipped with sensors from Vaisala, Kipp and Zonen. At the heart of each station is the CR1000 logger from Campbell Scientific. Each station is capable to measure the following:

  • Wind speed
  • Wind direction
  • Humidity
  • Air Temperature
  • Irradiance
  • Barometric pressure
  • Ground Temperature
  • Rain
  • Leaf wetness

In addition to the above parameters the following parameters are calculated by the logger by means of mathematical models.

  • Dew point temperature
  • Wet bulb temperature
  • Sunshine duration

The data from the station is transmitted to ftp servers situated in Gaborone/Botswana as well as Hamburg/Germany on an hourly bases over locally available GSM network providers. Once the data is uploaded to the server in Hamburg, it is processed and posted on a publicly available website. This website collects data of numerous stations across Namibia, Botswana, Zambia, Angola and South Africa for research purposes. A total of 8000km was covered in just under 4 weeks.

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Supply and Installation of Automatic Weather Stations at Kanovlei and Koichab Pan

National Botanical Research Institute

2014

National Botanical Research institute approached CTS to upgrade two of their existing AWS to satellite communication and subsequent installation at Kanovlei in the Tsumkwe Area as well as Koichab Pan close to Lüderitz.

Communication is via Meteosat satellites and based on a “fire and forget” principal which unfortunately does not allow remote maintenance procedures.

The stations form part of the SASSCAL Weathernet and measure all important meteorological parameters.

Weather data can be viewed at: www.sasscalweathernet.org 

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Design, Manufacture and Supply 21 Automatic Weather Stations

National Botanical Research Institute (BIOTA)

2010

CTS has supplied 21 weather stations for the Biota research project. These weather stations are designed according to world meteorological standard.

Each station consists of:

  • Wind Speed and Direction Sensor
  • Irradiance Sensor
  • Humidity/Ambient Temperature Sensor
  • Barometric Pressure Sensor
  • Ground Temperature Sensor
  • Leaf Wetness Sensor
  • Rain Bucket

The weather stations are equipment with the CR1000 logger from Campbell Scientific. Special software has been developed to allow automatic transmission of the weather data to a server based in Germany via GPRS using the local GSM network. Software updates can be done remotely minimizing travel.

Weather data can be viewed at: www.sasscalweathernet.org 

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