RE: [EnergyPlus_Support] Re: solar collector to sky radiator

[Yuen Liu <yli006@xxxxxxxxxxx>]

Brent

I think, your current Flat Panel object (in SolarCollectorFlatPlateWater.idf) is working fine.  I did get some collector heat loss value at night, and the value is close to what I had observed  in the 1960's with a simple roof top system in University of Malaya, Kuala Lumpur, Malaysia.

To use it in Chicago in Winter, you will need some anti-freeze in the panel water as well. 

Dr. Li.



To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: brent_griffith@xxxxxxxx
Date: Mon, 1 Dec 2008 10:52:46 -0700
Subject: RE: [EnergyPlus_Support] Re: solar collector to sky radiator


I don?t believe the basic SRCC solar collector model can do any cooling. 



The simple PVT model can currently do night sky radiation cooling for air-based system.  But unfortunately I ran out of time prior to Version 3.0 and didn?t finish the capability for a cooling mode for water-based panels.  That is planned for the next release. 



I understand it is possible, but cumbersome, to model night sky cooling of water pipes using the low-temperature radiant model with internal-source construction. 



Brent



From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Linda Lawrie
Sent: Saturday, November 29, 2008 7:19 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Re: solar collector to sky radiator



The V3 release has PV-Thermal in it's models.