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Detailed Thermo-Economic Assessment of a Heat Pump for Industrial Applications

Author

Listed:
  • Guillermo Martínez-Rodríguez

    (Department of Chemical Engineering, University of Guanajuato, Noria Alta s/n, Guanajuato 36050, Mexico)

  • Cristobal Díaz-de-León

    (Department of Chemical Engineering, University of Guanajuato, Noria Alta s/n, Guanajuato 36050, Mexico)

  • Amanda L. Fuentes-Silva

    (Department of Chemical Engineering, University of Guanajuato, Noria Alta s/n, Guanajuato 36050, Mexico)

  • Juan-Carlos Baltazar

    (Energy Systems Laboratory, Texas A & M Engineering Experiment Station (TEES), Texas A & M University, 3581 TAMU, College Station, TX 77843, USA)

  • Rafael García-Gutiérrez

    (Departamento de Investigación en Física, Universidad de Sonora (UNISON), Hermosillo 83000, Mexico)

Abstract

Heat pump electricity costs grow with a power relationship as the evaporator temperature in the cycle decreases. The thermo-economic study of a solar thermal-assisted heat pump and storage system determines the minimum cost of the coupled system for an evaporator temperature. Through two case studies, one for the dairy industry and the other for 2G bioethanol production, the coupled system was evaluated for different temperatures in the evaporator, from 30 to 90 °C, and the minimum cost of the coupled system was determined. For the dairy industry, the lowest levelized total cost of a heat pump (LCOE) at 50 °C is 0.0799 USD/kWh. The evaluation carried out allowed us to determine the best operating conditions of the heat pump: 50 °C in the evaporator, COP = 4.2, and the work of the compressor of 211.3 kW. In the case of 2G anhydrous bioethanol production, the lowest levelized energy cost is 0.0409 USD/kWh for an evaporator temperature of 30 °C and a payback of 1.8 years. The study carried out makes it possible to guarantee the supply of the heat load at the operating temperature of the process and determines the impact of environmental conditions on the cost of the heat pump assisted with solar thermal energy.

Suggested Citation

  • Guillermo Martínez-Rodríguez & Cristobal Díaz-de-León & Amanda L. Fuentes-Silva & Juan-Carlos Baltazar & Rafael García-Gutiérrez, 2023. "Detailed Thermo-Economic Assessment of a Heat Pump for Industrial Applications," Energies, MDPI, vol. 16(6), pages 1-12, March.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:6:p:2784-:d:1099765
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    References listed on IDEAS

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    Cited by:

    1. Guillermo Martínez-Rodríguez & Héctor H. Silviano-Mendoza & Amanda L. Fuentes-Silva & Juan-Carlos Baltazar, 2024. "Continuous Solar Thermal Energy Production Based on Critical Irradiance Levels for Industrial Applications," Energies, MDPI, vol. 17(5), pages 1-17, February.
    2. Stanislav Boldyryev & Mariia Ilchenko & Goran Krajačić, 2024. "Improving the Economic Efficiency of Heat Pump Integration into Distillation Columns of Process Plants Applying Different Pressures of Evaporators and Condensers," Energies, MDPI, vol. 17(4), pages 1-31, February.

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