RE: [EnergyPlus_Support] cooling load

["Rohini Brahme" <rbrahme@xxxxxxxx>]

The reason could be that the heat from inside the building now has more difficulty in going out by conduction. This usually happens in office buildings which are dominated by internal loads and solar loads through windows. One way to check if this is true is to compare the internal temperatures without the system in the two cases. My guess is that the internal temperatures would be higher with insulation, and that these temperatures are higher than outside temperature on average. If you have enough air exchange with the outside (either by infiltration, or natural ventilation) then these numbers will be closer to the outside temperature. Also, make sure that the heating load is decreasing.

 

Rohini

	-----Original Message----- 
	From: teklay Weldeabzgi [mailto:teklay1979@xxxxxxxxx] 
	Sent: Mon 7/5/2004 6:16 AM 
	To: EnergyPlus_Support@xxxxxxxxxxxxxxx 
	Cc: 
	Subject: [EnergyPlus_Support] cooling load
	
	
	
	when i simulate a ground plus one office building i
	gokt some confusing result due to insulation in the
	roofs. the roof in the upper floor is corregated iron
	sheet and a chip wood ceiling with an air space b/n
	them. when i see the annual cooling load for this base
	case and inserting an insulation just below the iron
	sheet the cooling load with insulation is greater than
	the cooling load with out insulation. but i doubt this
	result is correct b/c using insulation is to reduce
	the cooling load, but in my case it increases.
	can any one what will the possible reason. i have
	checked my idf file but i can't find any error.
	
	thanks
	tek 
	
	
	            
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