Output "Zone Component Load Summary"

asked 2018-08-16 00:32:45 -0600

Alexis
545 ●1 ●10

updated 2018-08-23 12:15:26 -0600

__AmirRoth__

4446 ●5 ●17 http://bleedinggreenna...

In E+, I try to find a output to know the "cooling loss" in Watt, from my thermal zone to outside, throught the walls, windows, roof, internal gain, ...
I have the highest cooling capacity of the year for my zone in W but I dont know what source is the most important.
In summary I would like to have a table like this :

Cooling capacity the 5 september : 1000 W
Wall 1 : 100 W,
Wall 2 : 100 W,
Roof : 200 W
Windows: 400 W
Internal Gains : 200 W

Do you know if its possible ?

answered 2018-08-16 15:50:22 -0600

Ken Takahashi

171 ●1 ●3 https://www.linkedin.c...

I think you are looking for the Zone Component Load Summary. This should be an option under Output:Table:SummaryReports.

Looks like this: C:\fakepath\ZoneLoadComponentSummary.PNG

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Thank you for your answer. Ok, so I just understood that I need to set a design day and a design zone. So if i understand well, my cooling capacity gave by "Zone Component Load Summary" have to be the same than my cooling capacity gave by zone ideal total load ?

Alexis ( 2018-08-19 20:17:35 -0600 )edit

It won't exactly match because of how the heat balance method calculation works. In the heat balance method, the radiative and convective portions of each component of heat gains are summed together, and it makes it difficult to see how much each component contributed to the total cooling load.

EnergyPlus makes an estimate of the breakdown and will report it in the "Zone Component Load Summary". You can see the difference in the estimated vs calculated load in the last three rows of the second table. They are usually pretty close but not exactly the same.