Thermoeconomic optimization of an ejector refrigeration system working with isobutane
2014 (English)In: 11th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerants and Environmental Protection, GL 2014, 2014, 286-294 p.Conference paper (Refereed)
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.
Place, publisher, year, edition, pages
2014. 286-294 p.
Ejector refrigeration system; Exergy; Thermoeconomic; Optimization
Engineering and Technology Energy Engineering
IdentifiersURN: urn:nbn:se:kth:diva-156065ISI: 000352781600031ScopusID: 2-s2.0-84932187693ISBN: 9782362150043OAI: oai:DiVA.org:kth-156065DiVA: diva2:764506
11th IIR Gustav Lorentzen Conference on Natural Refrigerants, GL 2014; Shangri-La Hotel78 Beishan RoadHangzhou; China; 31 August 2014 through 2 September 2014
QC 201412022014-11-192014-11-192015-08-07Bibliographically approved