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[EnergyPlus_Support] Heating Load Difference



Hi Linda

I have divided my building into 9 zones without using interior walls 
as you sugguest. For the real building, there are only 3 zones.The 
following figure shows the plan view of the floor.The center zone is 
uncontrolled.The north and south zone are served by purchased air.
-------------------
|                 |
|                 |
|                 |
|-----------------|
|                 |
|-----------------|
|                 |
|                 |
|                 |
-------------------
For the specificaiton of perimeter zone and interior zone, the 
following picture show the zoning. 

-------------------
|                 |
|-----------------|
|  |           |  |
|  |           |  |
|-----------------|
|                 |
|-----------------|
|  |           |  |
|  |  interior |  |
|-----------------|
|   perimeter     |
-------------------

The perimeter and interior zone have the same schedule and same 
internal gains. Since there are no wall among these zones. I suppose 
that the load results should be close for the two situations. But 
the heating load of the second case is larger than that of the first 
case. The max differenc is up to 120%. 
Could you please tell me the reason for the difference?
Thank you in advance

charlie





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