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Re: 答复: [EnergyPlus_Support] air con ditioning load



So your floor is not against ground. You still shouldn't use outside unless the temps there are really as is it id outside (like massive ACH to outdoors)   Look at the othersidecoefficient object to handle your situation. check the io reference for how to use it. there are actually a couple of different boundry options available...you need to read up and use the one that best fits. 

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On 06.01.2013, at 11:42, "Joey Jiang" <cescjy@xxxxxxxxx> wrote:

 

but the room is on the 2nd floor, and the room below is not using air conditioner.

 

Should I still set outside condition as ground.

 

Regards,

 

Joey

 

å??件人: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] 代表 jeannieboef
å??é??æ?¶é?´: 2013å¹´1æ??6æ?¥ 16:29
�件人: EnergyPlus_Support@xxxxxxxxxxxxxxx
æ??é??: EnergyPlus_Support@xxxxxxxxxxxxxxx
主�: Re: [EnergyPlus_Support] air conditioning load

 

 

Floor slab against ground should have boundry condition set to ground, not outside. Outside surfaces are exposed to sun and wind. 

 

Try that. 

 

Regards

 

Jean

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On 06.01.2013, at 08:43, "cescjy" <cescjy@xxxxxxxxx> wrote:

 

Hi everyone,

I`ve got a problem while calculating air conditioning load for a typical building.
Generally, the problem is when I set 'outside boundary condition' of roof and floor from 'surface' to 'outdoor' AC load of winter increases as expected. However,the AC load of summer decreases other than 'increase'. After all, while all set 'outdoor', AC load of winter is larger than that of summer. This is very wired. Can anybody explain for me? Or there is something wrong with my configuration. Thanks very much!

Joey



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