Experimental Investigation on Performance Evaluation of PV Panel through Water Cooling Technique- A Review

Solar photovoltaic and thermal systems are potential solutions for current energy needs. One of the most important difficulties in using photovoltaic systems is the low energy conversion efficiency of PV cells and, furthermore, this efficiency decreases further during the operational period by increasing the cells temperature above a certain limit. To improve the performance of Photovoltaic cell different types of augmentation technique are used which include active, passive and combine technique. The passive technique is widely used because it is not required extra power. In passive technique use twisted tape or wire coil different type of insert's which is placed in flowing fluid in tube then turbulence will create. Then laminar flows gets convert in to turbulent flow which result increases in heat transfer rate is used to overcome the problem of low efficiency of Photovoltaic panel with water flow to the backside of PV panel. This water cooling mechanism is one way for maintaining a low operating temperature during its operation period. In this paper current advances in cooling techniques and temperature control of photovoltaic panels are analyzed and mentioned.