Total cooling energy needed- Demand or consumption?

asked 2022-05-03 14:11:25 -0500

Val G's avatar

updated 2022-05-09 09:30:12 -0500

What do the values for heating/cooling in EP results correspond to- energy demand or consumption? The description says that it stands for cooling energy needed”. However, needed does give any clarity.

I thought it refers to consumption. However, when I added the monthly cooling coil electric data from an energy simulation CSV output (for an office building of 420 sq m area), the final value (404,983.0192 Kwh) seems too large for a 400 sq. m building to be able to consume in a year. This is based on the context that the annual average electricity consumption is around 160 Kwh/ sqm and thus for the concerned building total consumption should be something around: 160 X420 = 67,000.

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What output are you looking at for the "cooling energy"? If it's the electricity used to provide cooling, that will be much smaller value than the cooling capacity or rate (since it will be ~ rate / COP)

Jim Dirkes's avatar Jim Dirkes  ( 2022-05-04 04:34:37 -0500 )edit

Hi Jim. Thanks for your time.

Firstly, I wanted to be sure if cooling coil electric energy (joules) gives total annual energy demand or electricity? Since the total value came out to be quite high, I assumed that it is the total required energy and not the provided electricity corresponding to the COP.

Kindly share your insights. Also, I would appreciate it if you could tell me which specific variables to use for obtaining both loads and electricity? (I had given a COP 3 with PFP VAV system)

I am not from this background and hence the struggle.


Val G's avatar Val G  ( 2022-05-05 11:45:08 -0500 )edit

I'm fairly sure that the value you are looking at is cooling energy (not electricity), but how about taking this conversation to an email thread for ease of sharing documents, etc.? Will you please send your IDF file and note the specific output that you are looking at? (My email address is in my UMH profile)

Jim Dirkes's avatar Jim Dirkes  ( 2022-05-05 12:18:35 -0500 )edit