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Thermoeconomic optimization of an ejector refrigeration system working with isobutane.

Number: pap. ID49

Author(s) : CHEN J., HAVTUN H., PALM B.

Summary

Thermoeconomics is a new branch of thermodynamics and consists of exergy analysis, economic modeling and thermoeconomic analysis on an energy conversion system. In this study, thermoeconomic concepts are applied to an ejector refrigeration system (ERS) that uses natural refrigerant R600a as the working fluid and has 100 kW cooling capacity. The system is investigated from thermodynamic and thermoeconomic perspectives. To optimize such a system, the objective function is defined as the sum of the costs of brine side fluids, electricity, and costs related to capital investment and operation and maintenance expense. The pinch point temperatures in the three heat changers are considered as the decision variables, with two different economic scenarios imposed to the system. An iteration technique is employed to minimize the objective function. It shows that the optimized objective function is reduced by 8.1% and 7.5% respectively compared to the non-optimized cases for the two scenarios.

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Pages: 8 p.

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Details

  • Original title: Thermoeconomic optimization of an ejector refrigeration system working with isobutane.
  • Record ID : 30012202
  • Languages: English
  • Source: 11th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2014). Proceedings. Hangzhou, China, August 31-September 2, 2014.
  • Publication date: 2014/08/02

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