MAGNET ELECTRICAL SUPPLIES

ABI Phoenix – Refrigeration Optimisation

Success on other Energy Saving projects at the ABI Phoenix Plant led ABI to ask Magnet to investigate energy saving opportunities in their refrigeration plant. Research papers recommended allowing the discharge pressure on chillers plants to “float”. A lot of optimisations seem to simply reduce the set point without getting all the possible benefits.
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Champagne Sports Resort – Heat Pumps

Heat Pump Project
The Hotel Block: serviced by one 48kW 3200L Geyser
The Solution was to retrofit one 20kW Heat Pump to the existing tank.
Elements Peak Power consumption Before: 32.00kW
Heat Pump Peak Power consumption After: 6.00kW
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Eskom KZN Buildings – Energy Efficient Lighting

Energy Efficient Lighting Project (DSM)
The objective of this project was to reduce the lighting load at all the Eskom buildings that are situated in the KZN are. A study performed by Magnet showed possible reduction in their electrical installed capacity by 0.433MW. The project involved the following:

• Replacing the existing light fittings with equivalents of higher energy efficiency
• Retrofitting existing fittings with new control gear e.g. replacing magnetic ballasts with electronic control gear
• Re-lamping existing fittings with more efficient lamps where appropriate
• Leaving existing fittings as is - where appropriate

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Sappi Tugela Mill – River Pump Upgrade

River Pump Station Upgrade (DSM)
The upgrade of the river pump stations was completed in May 2010 and allows for a shift of 1.85MW away from peak demand periods during the day and a 0.185MW energy saving throughout the day. Tugela Mill now has a substantially upgraded and improved river pump station with state-of-the-art process control capable of pumping the Mill’s daily requirement of water in less then 20 hours therefore providing the opportunity to shift load from peak periods to off-peak periods, using existing water storage capacity and without impacting on the security of the supply of water to the plant operations.
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Toyota Boshoku – Energy Efficient Lighting

Energy Efficient Lighting Project
Power Measurement:
The Power measurements show a definite decrease in consumption from ±420 watts to ±260 watts.
This is well within the predicted saving guarantee of 90%, with only 1-3 % allowance.

Lux Levels:
As part of the energy proposal, Magnet looks at improving the working environment of the employees by not only increasing the Lux levels, but also improving the visual effect of their working environment. This was achieved with great success with an average increase in lux levels and overall performance of 400%. Magnet also made use of a lamp with a CRI of 85%. This means a better quality of light.
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Transnet Rail – Energy Efficient Lighting

Energy Efficient Lighting Project (DSM)
The basis of the project was Energy Efficient Lighting and the better control there off. Energy Efficient Lighting was achieved by: Replacement, Retrofit, Relamp. The better control over the lighting was achieved with the installation of Occupancy Sensors.
LIGHTING:
Replacement: The site consisted of 70 “Bays” that were being lit by old 400W High Bay type of fittings, 2500 of these were changed out to an Energy Efficient Fluorescent High Bay. Average savings of approximately 47%. Other then the High Bays approximately 4000 Open Channels and Dustproof Fittings were also replaced with more efficient types and lower wattage units.
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Unilever – Energy Efficient Lighting & Occupancy Sensors

Energy Efficient Lighting and Occupancy Sensors
COMPLETED PROJECT
Magnet recently an Energy Efficiency project at Unilever, whereby Occupancy Sensors were installed in various areas throughout the UniLever facility in The Ridge Umhlanga, as well as a lighting upgrade. The project included the Administration Building and the multi story car parkade. The project involved changing LED and 35Watt downlighters to 5Watt LED’s, as well as retrofitting of the current fittings with new control gear and installation of Occupancy Sensors.
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