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Adjacent heated zones in EP

asked 2017-12-11 03:55:31 -0600

jack_l gravatar image

updated 2018-01-04 10:32:00 -0600

The building I'm modelling in EnergyPlus is adjacent to other heated buildings. I modeled the other buildings, as adjacent thermal zones (Net part of total floor area set to No in the Zone object), conditioned by an ideal air system. When I check the results, I see the consumption of the ideal air system included in the total consumption of my building. Is there a way to exclude it from total consumption, just like I am able to exclude its area from total building area? Or, would you better recommend to model it using Other Side Coefficients as boundary conditions?

Update 01/04: I still have no solution of that problem. I need to model the adjacent zones as actual zones because I have internal windows to be taken into account. However I am still not able to exclude the energy consumption of the other zones from that of my building in the final report. Any suggestion would be highly appreciated.

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answered 2018-01-04 11:42:12 -0600

I assume that you also have District Cooling and Heating in your building, otherwise it wouldn't be a problem (the Ideal Air Loads reports energy as district cooling/heating).

So I guess you need to put the ideal air loads on an Output:Meter and do the subtraction yourself in post processing.

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Ok so I need to subtract it. I was just hoping to find a way to do it in the input phase, without any post-processing. I will subtract then. Thank you

jack_l gravatar imagejack_l ( 2018-01-05 02:45:39 -0600 )edit

answered 2018-01-10 17:46:58 -0600

gmehta75 gravatar image

If the adjacent building is conditioned, then the shared surfaces can be treated as adiabatic. The building that you are modeling and the adjacent heated buildings - are they at different setpoints? Do yo anticipate a great amount of heat gain or loss through the internal windows?

Some good discussions here and here and here.

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Asked: 2017-12-11 03:55:31 -0600

Seen: 60 times

Last updated: Jan 10