Paper Conference

Proceedings of eSim 2008: 5th Conference of IBPSA-Canada

     

A NUMERICAL SIMULATION OF HEAT LOSS FROM A BASEMENT WITH VARIABLE SOIL THERMAL CONDUCTIVITY

Ivan Nikolaev, Marc Rosen, Wey Leong

Abstract: A numerical simulation of two-dimensional heat loss from an uninsulated concrete basement surrounded by two soils with different textures is performed to illustrate the importance of the effective soil thermal conductivity on underground heat transfer problems. The system is assumed to be at steady-state, with a uniform moisture distribution within the soil, and having moisture contents of completely dry, field capacity and full saturation. It is determined that underground heat transfer is significantly influenced by soil thermal conductivity, which in turn depends primarily on texture, temperature and moisture content. It is concluded that moisture content has the most significant effect on underground heat transfer, causing up to a 132% variation relative to a dry soil condition. The soil texture is the second most influential factor, resulting in up to a 62% variation with respect to a fine soil condition. Temperature has the least effect, leading up to a 22% variation relative to a condition of constant thermal conductivity.
Pages: 99 - 104
Paper:
esim2008_099_104