| Summary: Photovoltaic systems application in renewable energy area has been increasing nowadays. Efficiency of photovoltaic cells is a quite important issue. A lot of techniques are used to increase the efficiency. Water cooling technique is a common method.
Experimental results were measured by using a metal construction on a PV panel with 260 watt. Water was used to cool the panel. The current, voltage and temperature measurements were transferred to a computer by using data logger. The calibrated rheostat was used as resistance. In these measurements, the current, voltage and temperature measurements on the panel were obtained without cooling it. After that the current, voltage and temperature were measured by giving water to the system, after cooling it. The obtained results were computerized by using data logger, and were compared. When the outside temperature was high and solar radiation level was maximum at noon, %24 power increase was supplied. When the outside temperature and solar radiation level were lower, %13 power increase was obtained.
Keywords: Energy efficiency, Photovoltaic, Cooling |
