Study of Oscillatory Flow Heat Exchanger Used in Hybrid Solar System Attached with Fixed Reflectors

Abstract- Simple hybrid photovoltaic/thermal or PV/T solar water systems are commercially unattractive due to its less combined efficiency, low concentration ratios, long payback period etc. The augmentation of solar radiation on module surface is the easy and cost effective method to increase concentration ratio and combined PV/T efficiency of simple hybrid solar system. This can be accomplishing by design, fabricating and attaching the aluminum reflectors to module sides of hybrid solar system. This paper offers design and performance analysis of oscillatory flow heat exchanger used in hybrid system fitted with aluminum reflectors. The investigational results such as performance efficiencies of photovoltaic, thermal, and combined PV/T system over a range of operating conditions are determined and assessed for latitude of Mumbai. At solar radiation of 929W/m2 and water flow rate of 0.042 kg/sec, the present hybrid system has generated combined PV/T efficiency of 65.10 % with PV efficiency of 12.50%. Recommendations for enhancing performance of hybrid system with reflectors have discussed in the paper. Keywords-Low concentration ratio, Long payback period, Combined PV/T efficiency, Flat reflectors, Oscillatory flow heat exchanger