Abstract
Refrigeration has its vital role in the human life for the preservation of temperature sensitive substances. The high energy consumption and non-portability of conventional cooling systems led the human era to think about some distinct type of chilling systems. Solar Powered Peltier Refrigerator (SPPR) is a distinctive type of chilling system which employs sun energy to power the thermoelectric module for the cooling of space to be refrigerated and its performance is directly dependent upon the solar insolation rate. The solar system receives maximum solar irradiance at an angle of 90o with the sun. The intelligent dual axis tracking system of the sun light increases the power output of the solar system by maximum utilization of the available resources. The objective of this research was to design and inspect the performance of a SPPR for the cold storage of perishables, vaccines and medicines etc. A performance analysis of the system with the fixed panel solar system and dual axis solar tracking (STS) system by keeping the SPPR at standard ambient temperature of 25oC is done. It indicated that the COP is directly dependent on the input power and cooling rate of the system. It was observed that the change in cooling load is a function of the refrigerated space. The highest and lowest values of COP were recorded as 1.19 and 0.27 for directly powered SPPR with fixed panel and 2.07 and 0.39 in case of solar tracking system respectively.
Sheeraz Ali Ali, Adnan Qamar, Fahad Noor, Muhammad Farooq, Muhammad Moeen Sultan, Muhammad Amjad. (2019) Comparative Analysis of COP Improvement of Solar Powered Peltier Refrigerator Using Solar Tracking System, NUST Journal of Engineering Sciences , Volume 12, Issue 1.
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