| 논문명 | 열회수 배수장치의 급탕에너지 절감효과 분석/The Analysis of Energy Saving for Domestic Hot Water Using Drain Water Heat Recovery System |
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| 저자명 | 황석호(Hwang, Seok-Ho) |
| 발행사 | 한국건축친환경설비학회 |
| 수록사항 | 한국건축친환경설비학회 논문집 , Vol.15 No.6 |
| 페이지 | 시작페이지(747) 총페이지(10) |
| ISSN | 1976-6483 |
| 주제분류 | 환경및설비 |
| 주제어 | 열회수 배수장치; 유용도-전달단위수; 열교환기; 급탕에너지 Drain water heat recovery; effectiveness-NTU; Heat exchanger; Domestic hot water heating energy |
| 요약2 | Drain Water Heat Recovery (DWHR) or Waste Water Heat Recovery (WWHR) system is a heat recovery from waste drain water flow and preheat the incoming cold water. This system has been shown to be a viable method of improving the building energy efficiency. This paper investigates the energy saving potential for shower water heat recovery system in residential building. Horizontal system of DWHR was considered because it can be installed under a shower booth and easy access to drain and cold water. The heat energy exchange rate is evaluated using the effectiveness-NTU method. Heat transfer effectiveness was calculated by U-value and area of heat exchanger and drain water flow rate. When a flow rate is 7.5 l/min using heat exchanger has 450 W/m2K U-value and 7 m length, it was possible to save about 20% water heating energy. |
| 소장처 | 한국건축친환경설비학회 |