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Multi-objective optimization of thermodynamic and dynamic performance of free-piston Vuilleumier heat pump using NSGA-II.

Author(s) : SUN J., GUAN J.

Type of article: IJR article

Summary

Free-piston Vuilleumier heat pump (FVHP) is a heat pump driven by thermal energy such as the combustion of natural gas. Thus, it is a more energy-efficient way for heating than boilers. In this work, one dimensional computational fluid dynamic model is developed for FVHP with dwell motion. Structural design parameters of FVHP are optimized for higher based on the coupling of developed model and NSGA-II (Non-dominated Sorting Genetic Algorithm-II) under the condition of given heating capacity. 8 structural parameters are optimized for dynamic performance. The results show that free stroke is improved by 78% and is improved by 2.61%. Then, based on the obtained optimal 8 structural parameters, 9 structural parameters for thermodynamic performance are further optimized. The results show is increased by 3.04% while the heating output power is only reduced by 3.15%.

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Pages: 161-172

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Details

  • Original title: Multi-objective optimization of thermodynamic and dynamic performance of free-piston Vuilleumier heat pump using NSGA-II.
  • Record ID : 30031895
  • Languages: English
  • Subject: Technology
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 151
  • Publication date: 2023/07
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2023.04.004

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