Energy Recovery in Air Conditioning Systems: Comprehensive Review, Classifications, Critical Analysis, and Potential Recommendations

Rima Aridi, Jalal Faraj, Samer Ali, Mostafa Gad El-Rab, Thierry Lemenand and Mahmoud Khaled
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Rima Aridi: Energy and Thermo-Fluid Group, Lebanese International University LIU, Bekaa 1803, Lebanon
Jalal Faraj: Energy and Thermo-Fluid Group, International University of Beirut BIU, Beirut 146404, Lebanon
Samer Ali: Energy and Thermo-Fluid Group, Lebanese International University LIU, Bekaa 1803, Lebanon
Mostafa Gad El-Rab: Energy and Thermo-Fluid Group, Lebanese International University LIU, Bekaa 1803, Lebanon
Thierry Lemenand: LARIS EA 7315, Polytech Angers, University of Angers, 49000 Angers, France
Mahmoud Khaled: Energy and Thermo-Fluid Group, International University of Beirut BIU, Beirut 146404, Lebanon

Energies, 2021, vol. 14, issue 18, 1-31

Abstract: Energy has become the backbone of humanities daily activities. Heating, ventilating, and air conditioning systems (HVAC), which consume around 39% of energy in the residential sector, have turned into an essential constituent for providing fresh air, especially after COVD-19, not only in hospitals but also in any simple construction. Thus, decreasing this percentage or recovering part of the energy lost is an essential issue in today’s energy management scenarios. In this context, the present manuscript suggests a comprehensive review, classifications, critical analysis, and potential recommendations for energy recovery in air conditioning systems. It classifies energy recovery into two main categories: using lost energy for external uses, such as heating domestic water, or with other devices; and using lost energy for internal uses, such as the hot airflow which can be reused again for increasing efficiency of HVAC. In addition, this paper presents a summary of previous research and undertakes a review of the devices used for recovering energy. Furthermore, this review identifies superior devices in terms of climate and weather conditions. These objectives are accomplished by investigating around 190 published papers to conclude that energy recovery devices show a considerable effect on energy consumption in HVAC, mainly the heat pipe, fixed plate, and rotary wheel devices.

Keywords: energy management; heat recovery; review; HVAC; heat exchanger; classification (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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