| Title |
Distribution of Hot Tap Water Load for District Heating Substation with Hot Tap Water 2-Stage Heat Exchanger |
| Authors |
정동화(Dong-Hwa Jeong) ; 김주완(Joo-Wan Kim) ; 백영진(Young-Jin Baik) ; 이영수(Young-Soo Lee) ; 정대헌(Dae-Hun Chung) |
| Keywords |
지역난방 ; 지역난방 열사용시설 ; 급탕 ; 2단열교환기 District heating ; District heating substation ; Water heating ; 2-stage heat exchanger |
| Abstract |
According to the standards for district heating substation established by Korea District Heating Corporation, water heating supply systems at over 150 Mcal/h capacity must employ the 2-stage heat exchanger that improves the system efficiency by reusing the heat included in the return water of district heating system already used for space heating. In this paper, the operating characteristics of the system in accordance with the load distribution of two heat exchangers for pre-heating and re-heating cold city water are investigated. The results including mass flow rate, return temperature etc. help to manage district heating system economically. |