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RE: [EnergyPlus_Support] Modelling of Green Roof





Dear All,
 
I have managed to simulate a Green Roof successfully (many thanks to those that have helped).  In addition, I changed the Leaf Area Index (LAI) and soil depth to find out their effects on the roof surface temperature and the monthly cooling load.
 
The surface temperature decrease significantly when I increase the LAI but nominally when i increase the soil depth (which i think makes sense).  However, the monthly cooling load decrease significantly when i increase the soil depth but very little when the LAI was increase.  Why does the monthly cooling load depend so much more on the soil depth than the LAI when LAI can result in a much cooler surface temperature?
 
Cany anyone help me on this?  Thank you.
 
Regards,
Poh Khai
 

To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: linda@xxxxxxxxxxxxxx
Date: Tue, 15 Sep 2009 05:26:41 -0600
Subject: Re: [EnergyPlus_Support] Modelling of Green Roof

 
There is an example file -- Ecoroof Orlando that comes with EnergyPlus.

At 10:11 PM 9/14/2009, Ng Poh Khai wrote:
I understand that EnergyPlus is capable of modelling a green roof or 'eco roof' through its Material:Roofvegetation class.  As there are no examples or data sets available on this, is there any where I can find information on this type of simulations?




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