Development of Simulation Model for Predicting the Performance of a Hybrid Photovoltaic/Thermal (PV/T) Air Heating System for Regenerating Silica Gel in the Air Conditioning Room

Four simulation sub-models of four main parts; namely, photovoltaic/thermal (PV/T) collector, silica gel dehumidification unit, living space and air conditioning system, have been developed for a detailed transient simulation model for a hybrid PV/T solar air heating system for regenerating silica gel in air conditioning room. The models are explained along with algorithms for making quantitative predictions regarding the performance of the system. The mathematical equations of those individual parts are developed based on the first and second law of thermodynamics and the analysis of the balance of mass and energy conversion. Dynamic variations of various system performance parameters resulting from the simulation are illustrated. The results showed that the useful energy from PV/T collector and condensing unit of air conditioning system can heat the circulating air up to 50 C with 20% relative humidity. Moreover, the PV cooling can increase the electrical efficiency of PV cells and also increasing the total efficiency of the PV/T modules while the silica gel dehumidification unit can save the electrical energy used in the air-conditioner up to 20%.