Why cooling loads appear during the cold months ? Heating/Cooling loads using E+

I am simulating a residential building (80 m2) using Energy-Plus to determine the Heating/Cooling loads through a typical meteorological year. for this purpose, I am using a simple HVAC with Zone control:Thermostat object.So, the aim is to predict the District:Cooling and District:Heating. Indeed, we now that cold months usually require heating loads only. however, as we look at the figure bellow, there are cooling loads in all months of the year. Any help !!!!!

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The winter building loads are impacted by the under-slab ground temperatures and whether or not the simulation considers infiltration. Without these (offsetting) loads, internal gains can cause the need for cooling in winter.

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rraustad

answered 2019-02-28 13:10:17 -0500

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Mr Richard Raustad, thanks a lot for your prompt response. In my silumation, I used an infltration of about 0.5 Air-changer/hour. In this case, we can say that the results are reasonable.

tassimo4.0 (2019-02-28 13:26:15 -0500) edit

How to solve this problem? I got the same problem, but it doesn't matter construction,,

Eric Dier (2023-08-31 03:16:12 -0500) edit

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Why cooling loads appear during the cold months ? Heating/Cooling loads using E+

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Why cooling loads appear during the cold months ? Heating/Cooling loads using E+