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Energy savings

Johno12345
Hi


I'm looking at my factory for some avenues to save energy, and have certainly come across some projects that have saved thousands on energy, but with an obvious cost to implement. 


The obvious ones like LED lighting, timers etc are all done, so I have started thinking a bit further.


I have 11 charge air blowers, which are 11kW or 13kW, are all pretty old, and have been rewound several times. They cant be changed to variable speed, as the air volume needs to be constant, and need to remain individually controlled. As these things run all day and night, its a significant cost. 


I seem to be a bit sceptical when someone tips up at the door saying they have super energy saving motors, especially when they cant quantify their claims.


Has anyone come across something that gave tangible results on things like this? 


Another one is that someone said putting VSD on pumps and fans, even running them at 100% will give a good energy saving


Thanks, just having a ponder since its Friday
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  • 0
    Be careful if trying to reduce the energy used by cooling towers. Cooling towers are usually installed to get rid of the heat from air conditioning chillers or similar equipment.

    Any attempt to reduce energy used by the cooling towers may increase the temperature of the cooling water, and this may increase the energy used by the chillers.

    Attempting to reduce the cooling tower consumption from say 25Kw to 20Kw is utterly pointless if the chiller now uses 500Kw instead of 450 Kw.

    Except at times of low load or low ambient temperatures, it is generally a paying proposition to achieve the maximum possible air flow through cooling towers.

    Before experimenting, meter the energy used by the chillers, as well as that used by tower fans and circulating pumps. Only make alterations if the TOTAL consumption drops.
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  • 0
    Be careful if trying to reduce the energy used by cooling towers. Cooling towers are usually installed to get rid of the heat from air conditioning chillers or similar equipment.

    Any attempt to reduce energy used by the cooling towers may increase the temperature of the cooling water, and this may increase the energy used by the chillers.

    Attempting to reduce the cooling tower consumption from say 25Kw to 20Kw is utterly pointless if the chiller now uses 500Kw instead of 450 Kw.

    Except at times of low load or low ambient temperatures, it is generally a paying proposition to achieve the maximum possible air flow through cooling towers.

    Before experimenting, meter the energy used by the chillers, as well as that used by tower fans and circulating pumps. Only make alterations if the TOTAL consumption drops.
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