The aim of this textual work is to represent the review on solar air heater with air purification system. The review highlights the domain of solar air heater technology. It shows the different types and innovations of the solar air heater in the course of time. It thoroughly discusses the key points of various papers by former authors. Along with this, it also discusses about the nature and purpose of the paper and the developments done in this field. Together with this, a brief content of experimental set up has been given which gives an over view of design and fabrication of solar air heater with air purification system. There are stripes of pipes inside the wooden box which have gaps in between them. The gaps are filled with Aluminum foil painted black in color. fins with different design and surface roughness are provided to increase the rate of heat transfer inside the setup. The Aluminum foil is there to compensate the heating errors due to leakage in stripes of pipe. There are many techniques have been used to enhance the characteristics performance of the solar air heater such as surface geometry and different kinds of materials at inlet of the duct fan.
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