[EnergyPlus_Support] about Earth Tube

["y" <fly_bird@xxxxxxxxxxxxxxx>]

Dear Sir or Madam¡G
    I have some problems when I used EarthTube Model.I know there is
only one Earth Tube I can simulate in one zone, but when I set two
into one zone with different temperarture range, it can really work.
The results seems strange, for example below.

 date    time outdoor temp Zone temp   Earthtube volume  Fan consume
 01/05  23:00	6.9	   15.102	1016.166	   0
 01/05  24:00	7	   14.964	0	           0
 01/06  01:00	6	   14.881	0	           0
 01/06  02:00	7.2	   14.945        0	           0
 01/06  03:00	7	   14.908	0	           0
 01/06  04:00	7	   14.894	1008.697	   0
 01/06  05:00	6.1	   14.588	0	           0 
 01/06  06:00	6	   14.588	1046.670	   0
 01/06  07:00	6	   13.913	989.7873	   0
 01/06  08:00	7.8	   14.987	925.1847	   0


Why does Earth tube have volumes but doesn't consume any fan energy
when I set two in one zone. If you know, please tell me. Thank you.


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