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How can i simulate thermal comfort a traditional common building?

asked 2015-02-27 11:33:12 -0600

moazzeni's avatar

updated 2015-02-27 16:03:43 -0600

A “bazaar” is a marketplace or assemblage of shops. I want simulate thermal comfort of this type of building and compare it with measure data(Temperature,relative humidity, PMV). Image of “bazaar” : Could you help me which software is better for simulate this type and form of building? Best regards

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Is that the grand bazaar in Istanbul?

__AmirRoth__'s avatar __AmirRoth__  ( 2015-02-27 16:04:10 -0600 )edit

3 Answers

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answered 2015-02-27 12:21:22 -0600

updated 2015-02-27 12:22:54 -0600

Most software can simulate thermal comfort. I believe that they all refer to ASHRAE-55 standards for determining comfort within each space - EnergyPlus certainly does, and eQuest I'm pretty sure does as well. If you are not familiar with the ASHRAE-55 standard, that would be a good place to start as far as how thermal comfort is determined.

eQuest, EnergyPlus, OpenStudio and DesignBuilder interface) can all certainly meet your needs, and all will use weather files as appropriate for your region. You classify your space types as you desire - in your case, assigning stalls for sales cooking, and corridor space - including the effects of internal loads like lighting and equipment on the space.

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eQUEST does not provide interior surface temperatures and doesn't calculate dynamic moisture balance in the air. It cannot provide PMV predictions (there is no mean radiant temperature), and the humidity values reported by eQUEST are not very reliable for estimating ASHRAE-55 comfort criteria.

Neal Kruis's avatar Neal Kruis  ( 2015-02-27 16:37:00 -0600 )edit

I think it has not been hooked up in eQUEST, but in DOE-2.1E (the predecessor to the DOE-2.2 solver in eQUEST) there was a little-known routine added by EMPA (Swizerland) that calculates surface temperatures using heat balance principles. I've used that feature to calculate PMVs for a project in Egypt. I wasn't aware that the humidity values in eQUEST/DOE-2 are not very reliable. Would that be because moisture absorption/desorption is not modeled?

Joe Huang's avatar Joe Huang  ( 2015-02-28 14:23:49 -0600 )edit

answered 2015-02-28 14:41:46 -0600

Joe Huang's avatar

updated 2015-02-28 15:34:57 -0600

Looking beyond which programs can simulate surface temperatures and thus calculate PMV, I would say the most critical factors in getting a good simulation of conditions in a bazaar are, in order of importance: (1) the large thermal mass effect of the goods, (2) the effective air-change rate of outdoor air, and (3) the internal heat gain (sensible and latent) of lights, equipment, and people. From my experience, most simulation programs have difficulties in replicating the thermal stability of large thermally-massive structures which bazaars would definitely be. From my experiences going through bazaars and medinas in several Middle Eastern countries, they seem to have their own distinct microclimates. I think if you were able to get the air temperature and maybe humidity profiles correct, the thermal comfort would naturally follow. When you think about it, since 99% of the "stuff" in a bazaar don't receive solar radiation and are also not thermally connected to the outdoor environment, their surface temperatures should be virtually the same as the air temperature.

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Thanks dear @Joe Huang there are great point..

moazzeni's avatar moazzeni  ( 2015-03-02 08:40:14 -0600 )edit

answered 2015-02-28 03:49:22 -0600

moazzeni's avatar

updated 2015-02-28 09:11:07 -0600

Thanks dear @Benjamin . it's going be great if I'll use these software ..i like them and i use them.. but the question is about the form of “bazaar”. the roof of building is dome and there are some circle opening on the roof .. if i ignore the dome roof, may happen different result? or i must use other software? best

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Asked: 2015-02-27 11:33:12 -0600

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Last updated: Feb 28 '15