Modeling and analysis of an integrated solid state elastocaloric heat pumping system

Dong Luo, Yinshan Feng and Parmesh Verma

Energy, 2017, vol. 130, issue C, 500-514

Abstract: Elastocaloric cooling (ECC) is considered as one of the candidates to replace vapor compression cycles, which use refrigerants with global warming potential (GWP) as working fluids. In order to properly understand the ECC system performance, it is critical to conduct analysis at the integrated system level. Also, due to the cyclic operation of an ECC system, dynamic modeling becomes necessary to capture the associated transients. In this study, for air conditioning applications, a unique air-to-air ECC dynamic system model has been developed to simultaneously simulate the elastocaloric effect of NiTi, heat transfer, and water transport in the system. Key parameters have been identified from sensitivity analysis of various options as well as the dynamic coupling among components. A systematic methodology has been further developed to identify practical solutions of the integrated ECC system, which provides a basis for comparison against other existing cooling technologies. Performance of an integrated ECC system with 1.2 kW net cooling capacity has been optimized using the NSGA-II method for maximum coefficient of performance (COP) within operational constraints. It has been demonstrated that effective system design and energy-efficient operation can only be achieved from optimization of the entire integrated system instead of a component or subsystem.

Keywords: Elastocaloric; Air conditioning; Integrated system; Dynamic simulation; Synchronization (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:130:y:2017:i:c:p:500-514

DOI: 10.1016/j.energy.2017.05.008

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