[Bldg-sim] Ground Temperature: Building Surface

[Sandeep Kachhawa]

Dear Kanagaraj

I tried to use the slab utility program but couldn't get the desired
results. Can you please help me on that, how to use that program?

Thanks
Sandeep Kachhawa

On Fri, Feb 11, 2011 at 10:44 AM, kanagaraj ganesan
<gkanagaraj83 at gmail.com>wrote:

> Dear Sandeep,
> I used slab utility programe of energy plus to get the temperature of
> outside face temperatures for the core area and the perimeter area of the
> slab.Go through the "Ground Heat Transfer in EnergyPlus" in
> the auxiliary programs document of energy plus.
> Regards,
> Kanagaraj
>
>   On Fri, Feb 11, 2011 at 10:12 AM, Sandeep Kachhawa <
> sandeep.kachhawa at gmail.com> wrote:
>
>>  Yes, the weather file does have ground temperatures but its given for
>> different no. of ground temperature depths and is not clear. Further the
>> weatehr file ground temperatures are undisturbed ground temperatures, and as
>> per the EnergyPlus documentation, its not appropriate to take these values
>> for simulation
>>
>>
>> On Fri, Feb 11, 2011 at 12:14 AM, Morgan Heater <morgan at ecotope.com>wrote:
>>
>>>  Don’t the TMY2 & EPW weather data files have ground temperature in
>>> them?
>>>
>>>
>>>
>>>
>>> http://apps1.eere.energy.gov/buildings/energyplus/cfm/weather_data3.cfm/region=2_asia_wmo_region_2/country=IND/cname=India
>>>
>>>
>>>
>>> You can convert the epw files to CSV so that you can take a look at them
>>> with the energy plus weather utility, if I remember correctly.
>>>
>>>
>>>
>>> Morgan Heater, PE
>>>
>>> morgan at ecotope.com
>>>
>>> 206-322-3753 ext 209
>>>
>>>
>>>
>>> *From:* bldg-sim-bounces at lists.onebuilding.org [mailto:
>>> bldg-sim-bounces at lists.onebuilding.org] *On Behalf Of *Sandeep Kachhawa
>>> *Sent:* Thursday, February 10, 2011 4:47 AM
>>> *To:* bldg-sim at lists.onebuilding.org
>>> *Subject:* [Bldg-sim] Ground Temperature: Building Surface
>>>
>>>
>>>
>>> Hi everyone
>>>
>>>
>>>
>>> The Energy plus documentation specifies that for typical commercial
>>> buildings in the USA, a reasonable default value for ground temperature:
>>> building surface is 2 degC less than the average indoor space temperature.
>>>
>>> What could be a probable default ground temperature for Indian climates,
>>> say New Delhi or Jaipur?
>>>
>>>
>>>
>>> Thanks
>>>
>>> Sandeep
>>>
>>>
>>>
>>
>>
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>
>
> --
> G.KANAGARAJ
> 2-F, C.P.W.D. Colony,
> Vasant Vihar,
> New Delhi-57
> Mob. No. - +91 9971841354
> Alternate e-mail - g_kanagaraj83 at rediffmail.com
>
>
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