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  • Open Access

    ARTICLE

    Efficiency Analysis and Performance Optimization of Heat Recovery Ventilators (HRVs) for Residential Indoor Air Quality Enhancement in Cold Climates

    Hamed Yousefzadeh Eini, Mohammad Hossein Sabouri, Mojtaba Babaelahi*

    FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.7, pp. 1771-1788, 2025, DOI:10.32604/fdmp.2025.066747 - 31 July 2025

    Abstract Heat Recovery Ventilators (HRVs) are essential for improving indoor air quality (IAQ) and reducing energy consumption in residential buildings situated in cold climates. This study considers the efficiency and performance optimization of HRVs under cold climatic conditions, where conventional ventilation systems increase heat loss. A comprehensive numerical model was developed using COMSOL Multiphysics, integrating fluid dynamics, heat transfer, and solid mechanics to evaluate the thermal efficiency and structural integrity of an HRV system. The methodology employed a detailed geometry with tetrahedral elements, temperature-dependent material properties, and coupled governing equations solved under Tehran-specific boundary conditions. A More >

  • Open Access

    ARTICLE

    Case Analysis of a Pump-Driven Heat Pipe Heat Recovery Ventilator in an Existing Experiment Building

    Zhun Li1,2,3,*, Zhengrong Ouyang1,2, Tianbao Sun3, Qiang Li3, Xiaobo Zhao3, Rong Yu3

    Energy Engineering, Vol.119, No.4, pp. 1393-1402, 2022, DOI:10.32604/ee.2022.020488 - 23 May 2022

    Abstract The building energy consumption is an important part among the total society energy consumption, in which the energy consumption for air conditioning occupies almost 70%. The energy consumption of the air conditioning system for fresh air handling can be saved effectively when the exhaust air energy could be recovered to preheat or precool the fresh air. Considering the install locations requirements on field, the pump-driven heat pipes (PHP) were developed as heat recovery ventilators (HRVs) and used in an existing experiment building in Beijing Urban. The thermal performance of the PHP HRVs was tested in… More >

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