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ISSN Online: 2377-424X

ISBN Print: 1-56032-797-9

International Heat Transfer Conference 11
August, 23-28, 1998, Kyongju, Korea

Thermal Environmental Characteristics in Ondol Heated Space Considering Floor Heat Conduction

Get access (open in a dialog) DOI: 10.1615/IHTC11.750
pages 71-76

要約

Thermal environmental characteristics in an ondol heated space are investigated numerically considering heat conduction through a floor slab as well as radiation heat exchanges between wall surfaces. The floor is heated by embedded hot water coils, and one of the vertical walls simulates a cold window. Four different coil patterns are utilized to investigate the effect of the coil patterns on indoor thermal comfort conditions. Turbulent indoor airflows are calculated with the low Reynolds k−ε turbulence model and SIMPLER algorithm based on the finite volume method. Radiative heat transfer is analyzed using the net radiation method with shape factors obtained using the crossed string method. Thermal comfort index of Predicted Mean Vote (PMV) is obtained from the calculated distributions of air velocity, temperature, and mean radiant temperature. It is found that the case of relatively dense coils near the cold wall provides a slightly warmer sensation on the average compared to the case of uniform coil pitch, but results in a larger variation of floor surface temperature and more heat loss by conduction.