住宅床構造の違いが太陽熱のダイレクトゲイン効果に与える影響

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  • ジュウタク ユカコウゾウ ノ チガイ ガ タイヨウ ネツ ノ ダイレクトゲイン コウカ ニ アタエル エイキョウ
  • A Study on the Influence of House Floor Construction on the Passive Solar Direct Gain Effect

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type:研究論文

type:Article

The numerical analysis was done to examine the effect ,of passive solar heat gain of two types floor construction, one is the slab on grade foundation, the other is the suspended floor with vertical edge insulation, the following things were clarified. 1) The floor surface temperature changes around two hours earlier than the room air temperature, when the sun radiation is exposed to the floor. Especially, the higher the heat capacity of surface material is, the more the room air temp lags behind the surface temp. 2) It is important to select the floor finishing material for a passive solar direct gain. The percentage of thermal admission to the ground via floor construction depends on the surface finish material. 3) In the case of the slab on grade foundation floor construction, 75 to 80 % on wood flooring or on carpet flooring, approximately 83 % of concrete finishing are dissipation to the residential room side. 4) The performance of gained solar heat dissipation of the suspended floor with vertical edge insulation on foundation wall is fallen off 10 to 20 % compare to the floor of slab on grade foundation. 5) In the case of insulated foundation method, the height of the crawl space is less influence to the thermal performance in the crawl space. Consequently, the numerical simulation of heat transfer model in the crawl space is able to calculate using the combined heat transfer coefficient, no need to handle the radiative heat transfer and a convective heat transfer respectively.

identifier:4

identifier:KJ00000704053

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