Simulation of the hot water ONDOL heating system by response factor method

應答係數法에 의한 溫水 溫室 暖房 시스템의 Simulation

Simulation on the hot water ONDOL heating system was made in order to investigate the variation of room temperature and specific fuel consumption of boiler. Heat balance equation was derived by response factors and solved implicitly. Variation of room temperature and specific fuel consumption of boiler were calculated with respect to the thickness of room floor, the absorptivity of wall for solar radiation, on-off temperature range of boiler and air exchange. The results show that specific fuel consumption of boiler is independent of the thickness of room floor and decreases with increasing the absorptivity of wall and on-off temperature range of boiler. However, it increases with increasing the air exchange. They also show that, when the absorptivity and on-off temperature range of boiler are increased, the amplitudes of room temperature variation increase.

본 연구에서는 유한차분법보다는 정확도가 약간 떨어지지만 공기조화 분야의 계산에 적합하고 계산시간이 적게 소요되는 응답계수법을 사용하여 온수온돌방계의 비 정상 열전달을 해석하였다.