Abstract
In recent years, interest in heat recovery systems for building applications has resurged due to concerns about the energy crisis and global climate changes. This review presents current developments in four kinds of heat recovery systems for residential building applications. A extensive investigation into the heat recovery integrated in energy-saving systems of residential buildings is also covered, including passive systems for building components, mechanical/natural ventilation systems, dehumidification systems, and the thermoelectric module (TE) system. Based on this review, key issues have been identified as follows: (1) The combination of heat recovery and energy-efficient systems could be considered as a promising approach to reduce greenhouse gas emissions and make residential buildings meet high performance and comfort requirements. However, real-life evaluation of these systems with economic analysis is insufficient; (2) When heat recovery is applied to mechanical ventilation systems, issues such as pressure leakages and air shortcuts should be addressed; (3) The heat pipe heat recovery system enjoys more potential in being combined with other sustainable technologies such as thermoelectric modules and solar energy systems due to its advantages, which include handy manufacturing and convenient maintenance, a lack of cross contamination, and greater thermal conductance.
Highlights
Rapid growth in world energy use has caused concerns about supply difficulties, energy depletion, and serious environmental impacts
This review focuses on four categories of heat recovery residential very promising
Mathematical cooling capacity of the model subtropical cooling capacity of the model subtropical model model increased by 30% compared climate increased by 30% compared climate with other desiccant-coated with other desiccant-coated heat recovery systems without heat recovery systems without
Summary
Rapid growth in world energy use has caused concerns about supply difficulties, energy depletion, and serious environmental impacts. Climate change and ozone layer depletion have been key issues with which people have had to deal [1]. According to the reviewed literature, building energy consumption, including its operation and maintenance, currently accounts for 40% of the total global energy demand [2,3]. Heating, ventilation, and air conditioning systems (HVACs) consume 40–60% of a building’s energy consumption, with the precise value varying by climate [1]. This energy consumption causes a large amount of greenhouse gas emissions, such as the emission of carbon dioxide (CO2 ). It is predicted that continued increases in carbon dioxide emissions will lead to major climate change [4]. Governments are making efforts to develop energy-saving and eco-friendly building technologies [5]
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