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A theoretical study of a novel regenerative ejector refrigeration cycle.

Author(s) : YU J., LI Y.

Type of article: Article, IJR article

Summary

There has been a demand for developments of the ejector refrigeration systems using low grade thermal energy, such as solar energy and waste heat. In this paper, a novel regenerative ejector refrigeration cycle was described, which uses an auxiliary jet pump and a conventional regenerator to enhance the performance of the novel cycle. The theoretical analysis on the performance characteristics was carried out for the novel cycle with R-141b. Compared with the conventional cycle, the simulation results show that the COP of the novel cycle increases, respectively, by from 9.3 to 12.1% when generating temperature is in a range of 80-160°C, the condensing temperature is in a range of 35-45°C and the evaporating temperature is fixed at 10°C. Especially due to the enhanced regeneration with increasing the pump outlet pressure, the improvement of COP of the novel cycle is approached to 17.8% compared with that in the conventional cycle under the operating condition that generating temperature is 100°C, condensing temperature is 40°C and evaporating temperature is 10°C. Therefore, the characteristics of the novel cycle performance show its promise in using low grade thermal energy for the ejector refrigeration system.

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Pages: 464-470

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Details

  • Original title: A theoretical study of a novel regenerative ejector refrigeration cycle.
  • Record ID : 2007-0665
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 3
  • Publication date: 2007/05

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