에너지공학 (Journal of Energy Engineering)

  • 제16권4호
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  • Pages.164-169
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  • 2007
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  • 1598-7981(pISSN)
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  • 2713-7074(eISSN)
한국에너지학회 (The Korean Society for Energy)
권호 표지

밀폐식 빙축열시스템의 축열 및 방열과정에 관한 실험

Experiment on the Charging and Discharging Processes of a Closed Ice-Thermal-Energy-Storage System

  • 발행 : 2007.12.31
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⟨ 이전 논문 다음 논문 ⟩

초록

우리나라에서 여름철 피크전력부하의 감소는 매우 중요하다. 정부는 피크전력부하를 저감하기 위하여 많은 지원 정책과 법률을 제정하여 시행하고 있다. 그리고 빙축열시스템은 이런 대안 중의 하나로서 알려지고 있다. 이 논문의 목적은 축열운전, 병렬운전과 축열조 단독운전이 수행된 밀폐식 빙축열시스템의 축열조 성능과 전체 효율을 평가하는 것이다. 설계조건에서 운전된 빙축열시스템의 자료를 이용하여 축열조의 축열밀도와 방냉효율 그리고 시스템의 총괄에너지 이용효율을 계산하면 $18.4\;USRT-h/m^3$, 96.2% 그리고 2028.7 kcal/kWh이다. 빙축열시스템의 축열조에 공급되는 에너지를 설계조건보다 많게 공급하면 과냉각효과에 의해 설계조건보다 시스템 효율이 낮게 평가되어진다.

The decrease in the summer peak electric load in our country is very important. The government has arranged and implemented a lot of support policies and statutes to decrease the peak electric load. And the ice-thermal-energy-storage system is known as one of the alternatives. The purpose of this paper is to evaluate the performance and the total efficiency of its storage tank, conducting the charging operation, the parallel operation and the single operation of a storage tank. The thermal energy density stored and discharging efficiency of a storage tank and the efficiency of total energy utilization of system are $18.4\;USRT-h/m^3$, 96.2% and 2028.7 kcal/kWh under the operation of design condition. When the storage tank is supplied more ice thermal energy than design condition, it is estimated that the efficiency of system are lower than the design condition by the supercooled effect.

키워드

참고문헌

  1. Alex H. W. Lee; Jerold W. Jones. 'Laboratory performance of ice-on-coil thermal-energy storage for residential and light commercial applications', Energy, 1996, 21, 115 https://doi.org/10.1016/0360-5442(95)00095-X
  2. Schibuola, I. 'Experimental study of ice storage performance in a office building', Int. J. of Energy Research, 1998, 22, 751 https://doi.org/10.1002/(SICI)1099-114X(19980625)22:8<751::AID-ER401>3.0.CO;2-6
  3. Yamada, M.; Fukusako, S.; Kawanami, T. 'Performance analysis on the liquid-ice thermal storage system for optimum operation', Int. J. of Refrigeration, 2002, 25, 267 https://doi.org/10.1016/S0140-7007(01)00088-3
  4. Chaichana, C. 'An ice thermal storage computer model', Applied Thermal Engineering, 2001, 21, 1769 https://doi.org/10.1016/S1359-4311(01)00046-1
  5. Babak K. Soltan; Morteza M. Ardehali. 'Numerical simulation of water solidification phenomenon for ice-on-coil thermal energy storage application', Energy Conversion and Management, 2003, 44, 85 https://doi.org/10.1016/S0196-8904(02)00041-9
  6. Yang, K.H.; Yeh, T.C. 'Renovation of an ice storage AC system in an aquarium for energy conservation', Building and Environment, 2006, 41, 384
  7. Kozawa, Y.; Aizawa, N.; Tanino, M. 'Study on ice storing characteristics in dynamic-type ice storage system by using supercooled water. effects of the supplying conditions of ice-slurry at deployment to district heating and cooling system', Int. J. of Refrigeration, 2005, 28, 73 https://doi.org/10.1016/j.ijrefrig.2004.07.017
  8. Ye, S.; Ye, Z.; Zhu, H.; Feng, T.; Zhang, Z.; Yuan, H.; Hu, S.B. 'Experimental study and analysis of the application of ice-storage capsules in an air conditioning system', Heat-Transfer-Asian Research, 2002, 31, 21 https://doi.org/10.1002/htj.10015
  9. Adref, K.T.; Eames, I.W. 'Experiments on charging and discharging of spherical thermal (ice) storage elements', Int. J. of Energy Research, 2002, 26, 949 https://doi.org/10.1002/er.816
  10. Shin, vn. Yang, H.C.; Tae, C.S.; Cho, S.; Kim, Y.I. 'In-site measurement of chiller performance and thermal storage density of an ice thermal storage system', Korean Journal of Air-Conditioning and Refrigeration Engineering, 2005, 17, 1204