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Re: [EnergyPlus_Support] Heating degree days and cooling degree days



Hello

Please, I have a question.
Where can I find the long term solar radiation data?
Please I need to know the solar  radiation for any place through 10 years, 20 years, or 30 years
I appreciate if you can guide& help me
Thank you so much in advance
Eman

From: eman tora <emantora@xxxxxxxxx>
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Cc: emanmag@xxxxxxxxx
Sent: Fri, October 23, 2009 11:18:58 AM
Subject: Re: [EnergyPlus_Support] Heating degree days and cooling degree days

Hello

Please, I have a question.
Where can I find the long term solar radiation data?
Please I need to know the solar  radiation for any place through 10 years, 20 years, or 30 years
I appreciate if you can guide& help me
Thank you so much in advance
Eman



On Wed, Oct 21, 2009 at 1:56 AM, rahmiandarini <rahmiandarini@xxxxxxxxxxx> wrote:
 

Hi,

I have question regarding weather data of DRYCOLD.TMY, provided for simulation of case 600, ANSI/ASHRAE Standard 140-2004.
I have converted the weather so that i can use the simulation in DesignBuilder & EnergyPlus.
When I checked the documentatio of ANSI/ASHRAE Standard, it is mentioned :
Heating degree-days (Base 18.3°C) : 3636.2°C - days
Cooling degree-days (Base 18.3°C) : 487.1°C - days

and in the DesignBuilder

Heating degree-days (Base 18°C) : 3379.2°C - days
Cooling degree-days (Base 10°C) : 1446°C - days

and my question is that, what does it means, and why those values are difference as they're originally from the same data.

Thanks,
Rahmi





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