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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
    i looked at using waste heat, but there isn't much use for it, using it for the furnaces was apparently too complex factoring in how they operate, even on a complete new system


    we have cooling towers that just run star delta, I think having those on a VSD could work well, especially since the manufacturer now offers them with new towers. 


    I have changed our hot water generators to natural gas at about 1.5p/kWh compared to almost 10p/kWh for electricity. 


    I think we spend a lot on compressed air too, 67kW by rating
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  • 0
    i looked at using waste heat, but there isn't much use for it, using it for the furnaces was apparently too complex factoring in how they operate, even on a complete new system


    we have cooling towers that just run star delta, I think having those on a VSD could work well, especially since the manufacturer now offers them with new towers. 


    I have changed our hot water generators to natural gas at about 1.5p/kWh compared to almost 10p/kWh for electricity. 


    I think we spend a lot on compressed air too, 67kW by rating
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