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논문 기본 정보

자료유형
학술저널
저자정보
김상엽 (부경대학교) 장형문 (부경대학교) 김찬희 (부경대학교) 최지수 (부경대학교) 이규남 (부경대학교) 정근주 (부경대학교)
저널정보
대한건축학회 대한건축학회논문집 大韓建築學會論文集 第37卷 第11號(通卷 第397號)
발행연도
2021.11
수록면
237 - 245 (9page)

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초록· 키워드

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In Korea, it is common to determine the capacity of individual gas-fired boilers based on the floor area or unit heating load of residential buildings. With this approach, the current tendency of heating load reduction can not be taken into account when sizing the individual gas-fired boilers for low-energy apartment buildings. Most of the low-energy apartment buildings might be equipped with over-sized boilers, which would cause the boiler to operate with low efficiency particularly under part load conditions. As the over-sized boilers can deteriorate the energy saving performance of low-energy apartment buildings, this study was conducted to suggest the necessity of adjusting the output range of individual gas-fired boilers. For this purpose, heating and domestic hot water load of apartment buildings were analyzed considering the historical change of energy saving design standards. The analyzed loads were compared with the output range of household gas-fired boilers currently available on the market. The results showed that the heating output of the boilers is over-sized, even though the heating load has been reduced by 53%. It was found that the part-load output of boilers was significantly higher than the heating load, which would lead to the reduced efficiency during the part load conditions. It was also found that the individual room control can increase the difference between the boiler part-load output and heating load. Therefore, it is necessary to adjust the output range of boilers by lowering the part-load output and to increase the turn-down ratio of boilers in order to improve the energy efficiency of low-energy apartment buildings.

목차

Abstract
1. 서론
2. 국내 가정용 개별보일러 출력 조사
3. 난방 및 급탕 부하 해석 방법
4. 난방 및 급탕부하 분석 결과
5. 개별보일러 출력범위 조정 필요성
6. 결론
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