Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Analysis of the Part Load Ratio Characteristics and Gas Energy Consumption of a Hot Water Boiler in a Residential Building under Korean Climatic Conditions

국내 기상조건하 주거용 건물 가스 보일러의 부분부하 특성과 에너지 사용량 분석

  • Yu, Byeong Ho (Graduate School, Hanbat National University) ;
  • Seo, Byeong-Mo (Graduate School, Hanbat National University) ;
  • Moon, Jin-Woo (Department of Building and Plant Engineering, Hanbat National University) ;
  • Lee, Kwang Ho (Department of Architectural Engineering, Hanbat National University)
  • 유병호 (국립한밭대학교 대학원 건축공학과) ;
  • 서병모 (국립한밭대학교 대학원 건축공학과) ;
  • 문진우 (국립한밭대학교 설비공학과) ;
  • 이광호 (국립한밭대학교 건축공학과)
  • Received : 2015.06.19
  • Accepted : 2015.07.29
  • Published : 2015.09.10
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Abstract

Residential buildings account for a significant portion of the total building-energy usage in Korea, and a variety of research studies on the domestic boiler have therefore been carried out; however, most of these studies examined the boiler itself, whereby the part-load ratio characteristics and the corresponding gas-energy consumption patterns were not analyzed. In this study, the part-load ratio and operating characteristics of a domestic gas boiler were analyzed within a residential building equipped with a radiant floor-heating system; in addition, the energy consumption between condensing and conventional boilers was comparatively analyzed. Our results show that significant portions of the total operating hours, heating load, and energy consumption are in the part-load ratio range of 0 through 40%, whereby the energy consumption was significantly affected by the boiler efficiency under low part-load conditions. These results indicate that the part-load operation of a boiler is an important factor in residential buildings; furthermore, replacing a conventional boiler with a condensing boiler can reduce annual gas-energy usage by more than 20%.

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References

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  1. Recent Progress in Air-Conditioning and Refrigeration Research : A Review of Papers Published in the Korean Journal of Air-Conditioning and Refrigeration Engineering in 2015 vol.28, pp.6, 2016, https://doi.org/10.6110/KJACR.2016.28.6.256