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

  • 제23권4호
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  • Pages.297-302
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  • 2011
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  • 1229-6422(pISSN)
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  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
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급탕 2단열교환방식 지역난방 열사용시설의 급탕부하 분배에 관한 연구

Distribution of Hot Tap Water Load for District Heating Substation with Hot Tap Water 2-Stage Heat Exchanger

  • 투고 : 2011.01.03
  • 심사 : 2011.03.14
  • 발행 : 2011.04.10
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초록

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.

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과제정보

연구 과제 주관 기관 : 한국에너지기술평가원(KETEP)

참고문헌

  1. Korea District Heating Corporation, 2009, Standards for district heating substations.
  2. Chung, K. S., Sa, K. Y., Kim, L. H., and Lee, H., 2009, Design capacity evaluation of 2-stage hot water heat exchanger in apartment mechanical rooms with district heating system, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 21, No.8, pp. 456-461.
  3. Moon, J. H., 2007, Improvement of special facility system using district heating by heat load pattern analysis, Ph. D. thesis, Hanyang University, Seoul, Korea.
  4. Jeong, D. H., Kim, J. W., Baik, Y. J., Lee, Y. S., and Chung, D. H., 2010, Development of analysis program of compact unit for optimum design of district heating system, Proceedings of the SAREK Summer Annual Conference, pp. 67-72.
  5. ASHRAE Handbook Fundamentals, 2009, Heat transfer, p. 4.24.
  6. Kumar, H., 1984, The plate heat exchanger : construction and design, Proceedings First UK National Conference on Heat Transfer, University of Leeds, lnst. Chern. Symp. Series No. 86, pp. 1275-1288.
  7. Lemmon, E. W., Huber, M. L. and McLinden, M. O., 2007, REFPROP, NIST Standard Reference Database, Ver. 8.0.
  8. Hyun, K. S., 2001, Technology development of district heating substation, compact unit, Report of Korea District Heating Corp.