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[EnergyPlus_Support] Problems on air flow windows and cooling coil

Dear all,
I have two problems:
1. When i simulate the airflow window, it is found that during 
winter,the gap convective heat loss and the window heat loss is 
larger than the one without air window. However, the plant heating 
load decrease.

2. When I try to change the Coil:Water:simple to the 
Coil:Water:cooling, it is found there are several problems.

2a My system is a draw though system however the autosize outlet air 
temperature is the same as my supply air temperature, it seems that 
there must have some problem since it does not account the 
temperature rise across the fan.

2b after autosizing of the cooling coil, when i perform design day 
simulation, the coil cannot fullfill its duty. Even I manully 
decrease the leaving air temperature in the coil input.

Can anyone tell me how the use this coil and read the airflow window 
output during winter.

Ernest Tsang

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