| Title |
Energy Simulation for Conventional and Thermal-Load Controls in District Heating |
| Authors |
Sung-Wook Lee ; Hiki Hong ; Sung-Hwan Cho |
| DOI |
http://dx.doi.org/10.6110/KJACR.2015.27.1.050 |
| Keywords |
일반제어 ; 열량제어 ; 외기보상제어 ; 설정온도제어 ; 난방부하예측제어 ; 외기온예측/최적제어 Normal control ; Thermal-load control ; Outdoor reset control ; Setting temperature control ; Predicted heating load control ; Predictive optimal control |
| Abstract |
Korea district heating systems have mainly used setting temperature control and outdoor reset control. Different from such conventional normal methods, a thermal-load control proposed in Sweden can decrease the return temperature and reduce pump power consumptions because the control is able to provide the appropriate amount of required heat. In this study, further improved predictive optimal control in addition to the conventional controls were simulated in order to verify its effect in district heating system using TRNSYS 17. 200 m2 apartment housing which accounts for 25% in Korea and is used as a calculation model;. the number of households in the simulation was 9. As a result, a higher temperature difference and decreasing flow rate at primary loop were shown when using thermal-load control. |