[Bldg-sim] Ground Temperature: Building Surface

Linda Lawrie linda at fortlawrie.com
Fri Feb 11 04:33:23 PST 2011


You can get EnergyPlus help at the helpdesk: http://energyplus.helpserve.com

the slab utility use is described in the Auxiliary Programs document 
and you can also embed objects into your IDF and have the slab 
program run automatically.

At 12:45 AM 2/11/2011, Sandeep Kachhawa wrote:
>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 
><<mailto:gkanagaraj83 at gmail.com>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 
><<mailto:sandeep.kachhawa at gmail.com>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 
><<mailto:morgan at ecotope.com>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>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
>
><mailto:morgan at ecotope.com>morgan at ecotope.com
>
>206-322-3753 ext 209
>
>
>
>From: 
><mailto:bldg-sim-bounces at lists.onebuilding.org>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: <mailto:bldg-sim at lists.onebuilding.org>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 - 
><mailto:g_kanagaraj83 at rediffmail.com>g_kanagaraj83 at rediffmail.com
>
>
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