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공동주택 기계실 난방설비 운전 개선 연구

A Study on Improved Operation of Apartment Heating System in a Machine Room

  • Seo, Jeong-Ah (Department of Mechanical Engineering, Sejong University) ;
  • Shin, Younggy (Department of Mechanical Engineering, Sejong University) ;
  • Kim, Yong-Ki (Korea Institute of Civil Engineering and Buidling Technology) ;
  • Lee, Tae-Won (Korea Institute of Civil Engineering and Buidling Technology)
  • 투고 : 2016.10.26
  • 심사 : 2016.11.28
  • 발행 : 2017.01.10

초록

This study proposes an idea for energy saving in apartment machine rooms. A conventional district heating system is equipped with constant-flow pumps and bypass valves to regulate pump differential pressure. Each family unit is equipped with a constant-flow on/off valve. This leads to excessive hot water circulation and a high return temperature. To reduce energy loss, this study assumes that each family unit is renovated with a heating valve which regulates the return temperature at $35^{\circ}C$. The hot water supply pump is also replaced with a pump with an inverter to vary flow rate. Expected energy savings is then estimated from field test data. According to the results, pump electricity consumption was reduced by 6,100 kWh for a family unit building over about half a year. The supply temperature can also be lowered by $5^{\circ}C$, which can contribute to a production of electricity of 10.3 kWh/ton of hot water.

키워드

참고문헌

  1. Seo, J. A., Shin, Y., Kim, Y. K., and Lee, T. W., 2016, A Study on Improved Heating Performance of an Apartment Housing Unit, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 28, No. 2, pp. 69-74. https://doi.org/10.6110/KJACR.2016.28.2.069
  2. Hong, S. K. and Cho, S. H., 2015, The Comparison Study on Heating Supply Energy and Usage Patterns by Supplying Water Temperature Control, Proceedings of SAREK 2015 Winter Conference, 15-W-074, pp. 266-274.
  3. Kim, Y. K., Yoon, S. M., and Lee, T. W., 2014, Improvement of a Standard Operating Mode for User-side Heating Supply Temperature in Distric Heating System, Proceedings of SAREK 2014 Summer Conference, 14-S-108, pp. 461-464.
  4. Lee, T. W., Kim, Y. K., and Ho, J. W., 2009, An Experimental Study on the Optimal Control Methods for the Radiant Floor Heating Panel, Proceedings of SAREK 2009 Winter Conference, 09-W-072, pp. 419-424.
  5. KEPCO, 2016, http://cyber.kepco.co.kr/ckepco/front/jsp/CY/E/E/CYEEHP00102.jsp.
  6. Korea District Heating Corp., 2015, Hot water heating facility standard, p. 18.