RE: [EnergyPlus_Support] Heating and Cooling vs. U-value

[YuanLu Li <yli006@xxxxxxxxxxx>]

Hi, Vinay

If you increase the insulation for every part of a building, you cannot apply your general rules for the result.

For example,  if you increase the floor insulation, you are removing ground cooling in Summer and ground warming in Winter.

If you increase the insulation between the room and the attic, the Summer night cooling is reduced.

 Dr. Li   

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To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: vinay.devanathan@xxxxxxxxx
Date: Tue, 3 May 2011 18:40:12 -0400
Subject: [EnergyPlus_Support] Heating and Cooling vs. U-value

 

Hello,

Does a better (low U-values for construction assemblies) insulated envelope result in achieving -

1. reduced cooling and heating loads (ideal)
2. reduced cooling, slightly higher heating load

Or are there too many variables to zero in on either of the above?

Hope to hear from someone.

Thank you.

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