Design and optimization of a solar air heater with offset strip fin absorber plate

Investigation of single and double pass solar air heater with transverse fins and a package wire mesh layer

“…El-Sebaii and Shalaby [4] recorded that the maximum difference between inlet and outlet air temperatures was about 28°C for upper channel at a 0.0223 kg/s flow rate and 580 W/m 2 solar intensity. It has been also suggested to insert an absorbing plate into a panel to have a double pass channel where the air flows from above and then below the absorber plate [13][14][15] or vice versa [16][17][18]. In general, the principle of using doubles pass or passing the flow from above and then from below is to increase the airflow path length inside collector.…”

Comprehensive study on solar air heater with circular and V-type turbulators attached on absorber plate

“…Nusselt number of the solar air heater is depends on the surface geometry of collector which affects by the hydraulic diameter of the system. The plate fin heat exchanger offset strip fin array correlations are used in this theoretical analysis due to lack of correlations available for circular pipe turbulators and the turbulators arrangement is almost same as fin heat exchanger offset strip fin [22,23]. There are three correlations used to find out the Nusselt Number and it is compared with the experimental values to validate the result.…”

Comprehensive Study of Compact Heat Exchangers with Offset Strip Fin

“…Solar air heater is one of these alternate systems that can transfer solar irradiant energy into airflow heat. These systems are typically used in space heating and food processing and they become popular for their cost-effectiveness and easy maintenance [22]. Like all other thermal systems, the development and research on these systems continue.…”

“…Like all other thermal systems, the development and research on these systems continue. In order to improve the performance of solar air heaters, researchers considered the use of offset strip fins [22][23][24][25] either numerically or experimentally. Results showed that, instantaneous thermal efficiency exceed 0.40 even at the lower air flow rates [22].…”

“…In order to improve the performance of solar air heaters, researchers considered the use of offset strip fins [22][23][24][25] either numerically or experimentally. Results showed that, instantaneous thermal efficiency exceed 0.40 even at the lower air flow rates [22]. High thermal performance is obtained with low friction and as a result of all those power consumption of the fan descends [23].…”