A comparison study of energy and exergy performance of a hybrid photovoltaic double-pass and single-pass air collector

Abstract

SUMMARYIn this present paper, analysis based on energy and exergy of double-pass hybrid photovoltaic thermal (HPV/T) air collector having air flow in the opposite direction in ducts has been carried out based on initial cost, annual savings and return on investment. Choice of the location is made to cover different climatic conditions prevailing in India e.g. hot and dry climate represented by Jodhpur, warm and humid climate represented by Mumbai, moderate climate represented by Bangalore, cold and cloudy climate represented by Srinagar and composite climate represented by New Delhi. Results of single-pass HPV/T air collector have also been compared. It is observed that electrical, thermal and exergy efficiencies of double-pass HPV/T air collector are higher than that of single-pass HPV/T air collector by 10-12, 40-45 and 13-17%, respectively. Further, it is observed that cost per kWh of double-pass HPV/T air collector reduces for all the locations covered in the study when compared with cost per kWh of single-pass HPV/T air collector.

Photovoltaic modules and their applications: A review on thermal modelling

“…Tiwari et al [111] evaluated the overall efficiency performance of an unglazed PVT air collector for Indian climatic condition and results gave the optimal air flow rate, length and depth of duct. Raman and Tiwari [114,115] have studied the annual thermal and exergy efficiency of PVT air collector for five different climatic conditions of India. It was observed that the exergy efficiency is 40-50% lower than the thermal efficiency under strong solar radiation.…”

Exergetic optimization of a solar photovoltaic thermal (PV/T) air collector

“…More details of governing equations derivation are found in References [8,[11][12][13]15,16,18]. Figure 1 shows the equivalent thermal resistant circuit of a PV/T air collector [18].…”

“…The electrical efficiency of a PV module can be defined as the ratio of actual electrical output power to input the rate of solar energy incident on the PV surface as follows [7,8,[11][12][13][14][15][16][17][18]:…”

“…On the other hand, the electrical parameters appear in this equation directly. In the previous studies [4,6,8,11,12,15,16], the exergy efficiency of a PV/T air collector has been calculated from the following equation:…”

“…Raman and Tiwari [12] have compared the energy and exergy performance of a hybrid photovoltaic double-pass and single-pass air collector. They have shown that electrical, thermal, and exergy efficiencies of double-pass PV/T air collector are higher than single-pass PV/T air collector.…”