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The efficiency of a solar panel depends on the amount of solar radiation it receives and its surface temperature. However, during the conversion process, some of the solar radiation is converted into heat, which can increase the temperature of the solar panel’s junction, reducing its performance. This decrease in efficiency can be attributed to the decrease in output efficiency that occurs when the surface temperature of the solar panel increases. Therefore, maintaining a suitable temperature range is crucial to improving the efficiency of the photovoltaic (PV) panel. Various cooling methods, including the use of phase change materials (PCM), have been developed to control the temperature of the PV module. To test the effectiveness of PCM in cooling the solar PV module, we conducted an experiment that involved setting up a heat exchanger system and analyzing its performance.

Quality of Ride is one of the Important performance parameters of automotive vehicles, especially in the passanger vehicles. In this paper, the guidelines of ISO:2631-1997 and BS: 68441-1987 are applied on vehicles to assess the ride quality of vehicles objectively. Vibration inputs in terms of acceleration are acquired at 3 locations in 12 axes. These are then processed using the frequency weighting functions. The analysis gives a single number called “Overall Ride Value” which is proportional to passenger discomfort in vehicle. The axes which are principal sources of discomfort and the frequency range, which is most responsible for discomfort, are identified. The present work also includes experiments conducted to see the effect of variation in load, road surface, and vehicle speed on ride quality. The data obtained by this procedure can be used for assessment and comparison of ride quality characteristics of vehicles in detail.