온돌의 구들장과 땅바닥의 비정상 열전도 해석

Transient Heat Conduction Through the Ondol Floor and Beat toss to the Ground

For a periodic variation of the flue gas temperature the heat conduction through the Ondol floor was analysized. Also the heat loss to the ground was estimated. The floor thermal capacity, as a function of the floor thickness, has strong influence on the time lag of the temperature variation. It is an important design parameter for intermittent heating. Even for the steady periodic variation, there was significant heat loss to the ground below the Ondol floor.