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High zone mean air temperature

asked 2021-03-16 05:28:09 -0600

updated 2021-03-16 09:04:15 -0600

Hi, I have done a model in design builder (4.26m X 4.87m X 3.05m). Location: Chennai Activity: Domestic bedroom External wall: made of 3 layers. Cement 1cm , brick 20cm, cement 20 cm Roof: Concrete slab 20cm , gypsum plaster 1cm Opening: 2 windows single glazed 30% HVAC: no HVAC is installed. Only natural ventilation is allowed with 10ac/h I have done simulation for 12 months, Results show that indoor temperature is higher than outdoor. I dont knnow why? Can someone help me.......

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I suspect it will be hard for anyone to provide you with a definitive answer, given your case study description. The room geometry and constructions are clear enough, but there's plenty of missing info to reproduce your results. Your location is Southern India (near the Equator, +35°C, humid ... night cooling is a challenge even @10ACH). No info on shading, surface reflectances, etc. Based strictly on your description, I would indeed expect higher temperatures indoors (~greenhouse). Are you seeing trends in your indoor vs outdoor T°? Are you systematically above outdoor T°? Range?

Denis Bourgeois gravatar image Denis Bourgeois  ( 2021-03-16 14:11:43 -0600 )edit

My objective is to check the performance of different glazings. No shading devices are introduced Yes, I am comparing the indoor and outdoor temperatures for different glazings. It is showing that outdoor temperature is lesser than indoor temperature. I have attached the designbuilder file, If you could help me with this issue

Chandhru gravatar image Chandhru  ( 2021-03-17 00:51:01 -0600 )edit

I have attached my idf file Please help me to resolve the issue

Chandhru gravatar image Chandhru  ( 2021-03-18 04:23:43 -0600 )edit

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answered 2021-03-17 05:41:21 -0600

Eko123 gravatar image

updated 2021-03-17 05:41:39 -0600

Maybe you should share your idf file so someone can take a lookt at it.

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Asked: 2021-03-16 05:14:48 -0600

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Last updated: Mar 17