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Phil Sweet
Phil Sweet
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So how much extra energy does it take to collect, transport, and dump 5000 J/s of heat from the battery bank? Closed loop liquid cooling systems tend to have a COP of about 3.5. COP is kW/ton. So about 420W of power to provide 5kW of cooling - or an EER of 12ish. Well-sited systems of decent size can beat this depending on the cost and complexity of the system.

For the sake of completeness, EER is here defined as heat transfer (kW) / power consumption (kW). Both COP and EER are defined differently in different places and different disciplines. EER is often expressed as Btu/kw, and COP is sometimes expressed as kW/kW (this last one was news to me).

So how much extra energy does it take to collect, transport, and dump 5000 J/s of heat from the battery bank? Closed loop liquid cooling systems tend to have a COP of about 3.5. COP is kW/ton. So about 420W of power to provide 5kW of cooling - or an EER of 12ish. Well-sited systems of decent size can beat this depending on the cost and complexity of the system.

So how much extra energy does it take to collect, transport, and dump 5000 J/s of heat from the battery bank? Closed loop liquid cooling systems tend to have a COP of about 3.5. COP is kW/ton. So about 420W of power to provide 5kW of cooling - or an EER of 12ish. Well-sited systems of decent size can beat this depending on the cost and complexity of the system.

For the sake of completeness, EER is here defined as heat transfer (kW) / power consumption (kW). Both COP and EER are defined differently in different places and different disciplines. EER is often expressed as Btu/kw, and COP is sometimes expressed as kW/kW (this last one was news to me).

Source Link
Phil Sweet
Phil Sweet
  • 5.1k
  • 10
  • 19

So how much extra energy does it take to collect, transport, and dump 5000 J/s of heat from the battery bank? Closed loop liquid cooling systems tend to have a COP of about 3.5. COP is kW/ton. So about 420W of power to provide 5kW of cooling - or an EER of 12ish. Well-sited systems of decent size can beat this depending on the cost and complexity of the system.