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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Enhancement of Stratification for Solar Water Storage Tank with Spiral Jacket and Coil(Part 1：Verification Experiment)

나선유로에 의한 태양열 축열조 성층화 촉진(제1보 실증실험)

  • Kwon, Jae-Wook (Graduate School, Department of Mechanical Engineering, Kyung Hee University) ;
  • Hong, Hi-Ki (Department of Mechanical Engineering, Kyung Hee University)
  • 권재욱 (경희대학교 기계공학과 대학원) ;
  • 홍희기 (경희대학교 기계공학과)
  • Received : 2012.01.16
  • Published : 2012.04.10
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Abstract

Large-scale active solar heat systems are generally using heat exchanger between collector and storage tank loops to prevent damage by freezing. It is difficult to maintain stratification in a storage tank in the system owing to greater flow rate enhancing heat transfer. In the previous study, we introduced a spiral-jacketed storage tank and obtained good results to keep system performance of general level without better stratification. We added a scroll-shaped heat exchanger coil on the upper part in the spiral-jacketed storage tank. As a result of the experiment, it was verified that degree of stratification of the new type storage tank is higher than that of the previous one with a possibility of better collector efficiency and solar fraction.

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References

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Cited by

  1. Enhancement of Stratification for Solar Water Storage Tank with Spiral Jacket and Coil(Part 2 Simulation) vol.26, pp.1, 2014, https://doi.org/10.6110/KJACR.2014.26.1.008
  2. The Effect of a Manifold in a Storage Tank Applied to a Solar Combisystem vol.26, pp.7, 2014, https://doi.org/10.6110/KJACR.2014.26.7.322
  3. Performance Enhancement of Solar Thermal Storage Tank with Heat Exchange Coils (Part 1 : Verification Experiment) vol.27, pp.4, 2015, https://doi.org/10.6110/KJACR.2015.27.4.213
  4. The effect of manifold in liquid storage tank applied to solar combisystem vol.29, pp.3, 2015, https://doi.org/10.1007/s12206-015-0244-5
  5. Improvement of collection efficiency and solar fraction in solar thermal storage system using a 3-way valve and a 2-stage flowrate control vol.30, pp.7, 2016, https://doi.org/10.1007/s12206-016-0644-1