| Title |
A Study on the Control of Water Flow and Water Temperature in the Radiant Cooling System through Simulations |
| Keywords |
Radiant cooling system ; 복사냉방 시스템 ; On/off control ; On/off 제어 ; Variable flow control ; 변유량 제어 ; Outdoor ; indoor ; temperature ; 외기보상 실온 |
| Abstract |
The objectives of this study are to analyze the control variables according to condensation occurrence, to find the range in floor surface temperature and frequency of condensation, and to evaluate the control methods through simulations when the radiant heating system is used for cooling. Through the simulation analysis the control methods such as on/off control, variable flow control and outdoor reset with indoor temperature feedback control are evaluated and compared.
The results show that the lowest floor surface temperature is around 23℃, the surface condensation can be prevented by controlling indoor humidity within 20 g/kg (DA), and that outdoor reset with indoor temperature feedback control is more appropriate than on/off control and variable flow control with regard to prevention of the condensation and thermal comfort. |