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Case Study for Energy Conservation Measures of Hospital Buildings Using the Analysis of Energy Consumption Structure

의료시설 에너지절약 운영방법 도출을 위한 사례분석을 통한 에너지 영향요소 분석

  • Lee, Sangmoon (Building Energy Center, Energy Division, Korea Conformity Laboratories(KCL)) ;
  • Cho, Jinkyun (Building Energy Center, Energy Division, Korea Conformity Laboratories(KCL))
  • 이상문 (한국건설생활환경시험연구원 건물에너지센터) ;
  • 조진균 (한국건설생활환경시험연구원 건물에너지센터)
  • Received : 2019.03.27
  • Accepted : 2019.04.26
  • Published : 2019.04.30

Abstract

Because the hospital building operates 24 hours a day, 365 days a year for treatment and restoration of patients, it has a different pattern of energy use than that of ordinary buildings. Hospitals contribute to energy consumption and have a negative environmental impact. This study aims to find how meaningful energy performance, reflecting good energy management and ECMs, can be operated for hospital buildings, a category encompassing complex buildings with different systems and large differences between them. In this study, we proposed the energy diagnosis & evaluation method and energy management process to verify energy saving through operation data based on system & facility characteristics, operation pattern and energy consumption characteristics of hospital building. Energy consumption structures were surveyed throughout 4 reference hospital in Seoul, Korea. Findings confirm that different hospital departments have hugely different energy-demand profiles. Energy efficiency and energy saving potentials are presented. The energy performance analysis can be applied to a wide range of problems in energy-system operation.

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Fig. 1 Preliminary procedure of energy analysis for hospital buildings

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Fig. 2 Energy use aggregation levels of HVAC systems in buildings

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Fig. 3 Definition and classification ECMs project, procedure of ECMs priority matrix

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Fig. 4 Example of energy flow charts for a reference hospital A : a) electricity and b) district heat & city gas

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Fig. 5 Power usage ratio by systems in reference buildings

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Fig. 6 Thermal (heating/cooling) load contribution rate by zones

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Fig. 7 Power & thermal energy usage ratio by equipment in reference buildings

Table 1 Classification of building energy management level

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Table 2 Reference hospitals for the case study

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Table 3 Zonal floor area ratio of reference hospitals

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Table 4 Total energy use and energy analysis by energy sources (Level 1)

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Table 5 Comparative assessment of energy consumption structure for reference hospitals

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Acknowledgement

Supported by : 에너지관리공단

References

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