The current study explores the feasibility of employing an integrated system comprising an earthair
heat exchanger (EAHE) unit and a photovoltaic/thermal (HPT) system equipped with a phase
change material (PCM) to fulfill the heating, cooling, and electrical loads of a building. In this
arrangement, ambient air is heated during cold months by passing it through the EAHE and PCMbased
HPT systems, and during hot months, it is cooled by passing through the EAHE unit.
Additionally, in warm months, the air exiting the building is utilized to lower the temperature of
the PV panels. The electricity generated by the PV panels is harnessed to meet a portion or the
entirety of the building’s electrical demand. Following the identification of factors influencing the
system performance, the multi-objectives genetic algorithm (MOGA) approach is employed to
ascertain the optimal values of these parameters, aiming to concurrently maximize both the
thermal and electrical output of the HPT-EAHE system. The findings indicated that the optimal
HPT-EAHE system can fulfill 132693.3 kWh of heating demand for the building during cold
months, address 26536.1 kWh of cooling needs during hot months, and generate 9242.2 kWh
electrical power throughout the entire year.