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Re: [EnergyPlus_Support] Heating degree days and cooling degree days
- To: EnergyPlus_Support@xxxxxxxxxxxxxxx
- Subject: Re: [EnergyPlus_Support] Heating degree days and cooling degree days
- From: Don Shirey <shirey@xxxxxxxxxxxx>
- Date: Wed, 21 Oct 2009 08:36:21 -0400
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Notice that the "base" is different (18.3C vs 18C vs 10C).
rahmiandarini 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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