Abstract—Photovoltaic cells formed into solar module devices are a system for converting solar energy to electrical energy. The performance capability of photovoltaic modules is generally influenced by several factors, including solar irradiance, solar module types, temperature and sunlight spectrum. The temperature on the surface of the solar module can have a direct impact on the voltage and current produced by the solar module. One way to reduce the influence of panel temperature can be overcome by implementing passive cooling techniques. This research analyzes the comparison of a passive cooling system by installing a heatsinks and salt hydrates material to increase the output parameters of solar module compared to standard module without passive cooling system. The measurement result shows that passive cooling system using the heatsink is better than using salt hydrate.  Direct measurements carried out at the research location showed using a heatsink as a coolant is able to lower the temperature of the solar module by an average of 3.7 °C and for Salt hydrate cooler is 1.4 °C, that the heatsink was effective to reducing the average temperature 48.94 °C to 45.29 °C and the salt hydrate material was effective in reducing the average temperature from 48.94 °C to 47.57 °C. The average output voltage is 16.34 Volt and the output power reaches 72.79 Watt using heatsink as a coolant. Then the average output voltage is 15.62 Volt and the output power reaches 66.45 Watt using salt hydrate as acoolant , thus achieving an efficiency of 11.93% using heatsink and 10.92% with salt hydrate, compared to standard module without cooling system of 10.34% for an average irradiance of 896.67 W/m² at the time of measurement.

Keywords—Heatsink, Salt hydrate, photovoltaics module, passive cooling system

Cite: Asri, Ezwarsyah, Yuwaldi Away, Nasaruddin, Ira Devi Sara, Suryadi, "The Experimental Study of the Use of Heatsink and Salt Hydrate as Passive Cooling at Solar Modules," International Journal of Smart Grid and Clean Energy, Vol. 14, No. 1, pp. 1-13, 2025. doi: 10.12720/sgce.14.1.1-13

Copyright © 2025 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).