Abstract
The purpose of using solar air collectors is to raise the atmospheric air temperature to a temperature which can be used for various low and medium temperature applications. Collector, absorber and airflow arrangement are the most important components in the solar air collector. The performance of the collector depends on its heat loss and the absorber area that is in contact with the airflow. This study involves the theoretical simulation of the effect of mass flow rate on the performance, for flat plate and v-groove collectors that are in single and double pass configurations. Results show that the v-groove double pass air collector has the highest efficiency value of 56% at . The performance is greater than flat plate double pass collector, which has an efficiency of 54% under the same operating conditions. KEYWORDS: solar air collector; flat plate collector (fpc); v-groove collector; efficiency; single pass; double pass
Highlights
Solar energy is a solution to the increasingly limited fossil fuel resources problem
This study looks at the mathematical equations of flat plate and v-groove solar air collectors with single and double pass mass flow to determine the thermal efficiency of each collector type
Since the heat transfer between the absorber plate and the flowing air is low on the flat plate collector, this configuration results in less air being heated
Summary
Solar energy is a solution to the increasingly limited fossil fuel resources problem. Converting solar radiation into heat is one of the most common applications of solar energy [3]. There are several designs of solar air collectors which are used in different applications. The efficiency of collectors in air heating is low due to low convective heat transfer coefficients between absorber and heat losses to the surrounding through the top cover [4]. This study was conducted to determine the efficiency of flat plate and v-groove solar collectors with different air flow arrangement by analysing the mathematical equations. This study looks at the mathematical equations of flat plate and v-groove solar air collectors with single and double pass mass flow to determine the thermal efficiency of each collector type. MATLAB software is used to run the simulations for these collectors
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