Keywords: energy analysis, exergy analysis, solar energy, photovoltaic-thermal, photovoltaics, greenhouse air heaters, greenhouse air dryers, integrated heater-dryer, exergy efficiency, thermal efficiency
Thermodynamic performance analysis of a hybrid Photovoltaic-Thermal (PV/T) integrated greenhouse air heater and dryer
In this paper, performance analysis of a hybrid photovoltaic-thermal (PV/T) greenhouse air heater and dryer has been carried out. Analytical expressions have been developed for: greenhouse air temperature, instantaneous and overall energy and exergy efficiencies for without load, and instantaneous exergy efficiency with load under forced mode operation. An experimental validation has been carried out for without load condition. It has been observed that exergy efficiency of the greenhouse air heater is less than the thermal efficiency, and exergy efficiency with load is lower than that of without load as expected. Parametric studies have also been carried out.