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Design Optimization of Heat Wheels for Energy Recovery in HVAC Systems

Author

Listed:
  • Stefano De Antonellis

    (Department of Energy, Politecnico di Milano, Via Lambruschini 4, Milano 20156, Italy)

  • Manuel Intini

    (Department of Energy, Politecnico di Milano, Via Lambruschini 4, Milano 20156, Italy)

  • Cesare Maria Joppolo

    (Department of Energy, Politecnico di Milano, Via Lambruschini 4, Milano 20156, Italy)

  • Calogero Leone

    (Recuperator S.p.A., Via Valfurva 13, Rescaldina (MI) 20027, Italy)

Abstract

Air to air heat exchangers play a crucial role in mechanical ventilation equipment, due to the potential primary energy savings both in case of refurbishment of existing buildings or in case of new ones. In particular, interest in heat wheels is increasing due to their low pressure drop and high effectiveness. In this paper a detailed optimization of design parameters of heat wheels is performed in order to maximize sensible effectiveness and to minimize pressure drop. The analysis is carried out through a one dimensional lumped parameters heat wheel model, which solves heat and mass transfer equations, and through appropriate correlations to estimate pressure drop. Simulation results have been compared with experimental data of a heat wheel tested in specific facilities, and good agreement is attained. The device optimization is performed through the variation of main design parameters, such as heat wheel length, channel base, height and thickness and for different operating conditions, namely the air face velocity and the revolution speed. It is shown that the best configurations are achieved with small channel thickness and, depending on the required sensible effectiveness, with appropriate values of wheel length and channel base and height.

Suggested Citation

  • Stefano De Antonellis & Manuel Intini & Cesare Maria Joppolo & Calogero Leone, 2014. "Design Optimization of Heat Wheels for Energy Recovery in HVAC Systems," Energies, MDPI, vol. 7(11), pages 1-20, November.
    • Handle: RePEc:gam:jeners:v:7:y:2014:i:11:p:7348-7367:d:42348
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    References listed on IDEAS

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    Cited by:

    1. Liu, Peng & Justo Alonso, Maria & Mathisen, Hans Martin, 2023. "Global sensitivity analysis and optimal design of heat recovery ventilation for zero emission buildings," Applied Energy, Elsevier, vol. 329(C).
    2. Eloy Melian & Harald Klein & Nikolaus Thißen, 2020. "Improvement of a Nusselt-Based Simulation Model for Heat Transfer in Rotary Heat Exchangers," Energies, MDPI, vol. 14(1), pages 1-26, December.
    3. Laith Al-Hyari & Miklos Kassai, 2020. "Development and Experimental Validation of TRNSYS Simulation Model for Heat Wheel Operated in Air Handling Unit," Energies, MDPI, vol. 13(18), pages 1-13, September.
    4. Eloy Melian & Harald Klein & Nikolaus Thißen, 2021. "Economic Optimization of Rotary Heat Exchangers Using CO 2 Pricing Scenarios Based on Validated Fluid Dynamic and Thermodynamic-Based Simulation," Energies, MDPI, vol. 14(13), pages 1-19, July.
    5. Shahsavar, Amin & Khanmohammadi, Shoaib & Khaki, Mahsa & Salmanzadeh, Mazyar, 2018. "Performance assessment of an innovative exhaust air energy recovery system based on the PV/T-assisted thermal wheel," Energy, Elsevier, vol. 162(C), pages 682-696.
    6. Awais Shah & Deqing Huang & Yixing Chen & Xin Kang & Na Qin, 2017. "Robust Sliding Mode Control of Air Handling Unit for Energy Efficiency Enhancement," Energies, MDPI, vol. 10(11), pages 1-21, November.

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