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Estimating plant size from annual energy consumption

asked 2020-08-13 03:28:57 -0500

updated 2020-08-16 16:24:51 -0500

This is more of an avoiding simulation question rather than how to simulate something. I'm looking at data on total annual heating/cooling energy consumption, and I'm wondering if there are any existing methods for estimating the plant size required for the building?

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answered 2020-08-15 13:40:32 -0500

Answering my own question to get this going. After a lot of searching, I found a procedure from a BRE report from 2016 that suggests I should be able to make an estimate based on annual energy use, plant efficiency, and equivalent full load hours (heating or cooling).

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I've also found another BRE report which gives cooling plant EFLH for offices in a range of UK cities.

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The calculation that makes sense to me is kWh / EFLH / SEER = kW

So, working that through, I find a (very approximate) installed cooling capacity of 138 kW.

         Annual kWh  EFLH   Efficiency   Installed kW
Cooling  455,895     1,500  2.2          138
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Asked: 2020-08-13 03:28:57 -0500

Seen: 145 times

Last updated: Aug 15 '20