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Summary: The present research deals with the multicriteria optimization of two arrangements of a combined system including a building‐integrated photovoltaic thermal (BIPV/T) with a heat recovery wheel (HRW) for Kermanshah weather condition in Iran. The considered arrangements have two operational approaches including heat and cool approaches. In the heat approach of the arrangement (I), the fresh ambient air is preheated in two steps by flowing first among the HRW and then through the BIPV/T collector. In the cool approach of the arrangement (I), the outdoor air stream enters the HRW and is precooled there by exchanging heat to the building exhaust air. The exhaust air then enters the BIPV/T collector and cools the PV panels, thereby augmenting their efficiency. The cool approach of the arrangement (II) is like the arrangement (I), while in the heat approach of the arrangement (II), the outdoor air first gets into the BIPV/T collector and then flows among the TW. The uniform end of annual cost (UAC) and yearly available energy are considered as the objective functions. The obtained results revealed that however energetic performance of the arrangement (I) is more suitable than the arrangement (II); its UAC is 4441$ higher than that of the arrangement (II). Highlights: Propose two new configurations of BIPVT‐SRHXComparative analysis of two proposed system from economic and energy aspectsMultiobjective optimization with the aid Yen and UAC for two systemsConfiguration (II) recover 15 291 kWh more energy annually than configuration (I)UAC for configuration (I) is $4441 higher than configuration (II) in optimum states [ABSTRACT FROM AUTHOR]

A hybrid device consisting of a PCM-based photovoltaic/thermal system and a heat recovery wheel is introduced and its performance is examined analytically. This device is designed with the aim of supplying the heating load, cooling load and electrical load of a building and reducing the building's dependence on the air handling unit. The performance of the device at different hours on two days that represent the hot and cold days of a year, in different months and during a year for the weather conditions of Kermanshah, Iran, is investigated and then, the effect of the effective parameters on the annual yield of the device is checked. The investigation showed that by using the hybrid device, it is possible to provide 4.12–11.31 °C of pre-heating and 0.60–9.22 °C of pre-cooling of the outside air on January 15th and August 15th, respectively. Also, it was revealed that except in the three months of January, February and December, in the rest of the months the hybrid device is able to supply the entire thermal load required by the building. Finally, the total annual useful thermal power and electric power produced by the hybrid device was reported as 24776.49 kWh and 7747.66 kWh, respectively. • Hybrid PCM-based PTHC-HRW device is proposed. • In the hot/cold season, systems heat/cool the outside air and generate electricity. • Impact of various parameters on the energy yield of the system is examined. • Total annual useful thermal power produced by the hybrid device is 24776.49 kWh. • Total annual useful power yield of the hybrid device is 7747.66 kWh. [ABSTRACT FROM AUTHOR]

This paper presents exergo-economic and enviro-economic assessment of a novel building integrated photovoltaic thermal-compound sensible rotary heat exchanger (BIPVT-SRHX) system. The innovative BIPVT-SRHX system preheats/precools the outdoor air in winter/summer and generates electric power. The performance of the system are analyzed from the energy/exergy viewpoints for Kermanshah, Iran climatic conditions. Then, the multi-objective genetic algorithm (MOGA) optimization is used to optimize to determine the optimum values of geometric and operating parameters in order to maximize the annual average exergo-economic and enviro-economic aspects of the system. The considered geometric and operating parameters include the length, width and depth of the air channel located underneath the PV modules, the air mass flow rate, and the diameter, rotational velocity and length of the SRHX. Moreover, the annual performance of the optimized and non-optimized BIPVT-SRHX systems are compared. The results showed that the annual average exergo-economic and enviro-economic aspects of the optimized BIPVT-SRHX system are 0.0076 $/annum and 246.9 kWh/$, respectively. Furthermore, it was found that the annual average enviro-economic aspect, annual average exergo-economic aspect, and yearly sum of CO 2 mitigation of the optimized BIPVT-SRHX system are respectively 36.8%, 23.1% and 37.7% higher than the non-optimized system. • An innovative exhaust air energy recovery system consisting of a BIPVT and a SRHX. •Pre-heating/pre-cooling ambient air in winter/summer and producing electricity. •Genetic algorithm-based multi-objective optimization approach for BIPVT-SRHX system. •Optimization leads to a 36.8% increase in annual average enviroeconomic parameter. •Optimization leads to a 23.1% increase in annual average exergoeconomic parameter. [ABSTRACT FROM AUTHOR]