scholarly journals An experimental investigation of performance of a double pass solar air heater with foam aluminum thermal storage medium

2019 ◽  
Vol 14 ◽  
pp. 100440 ◽  
Author(s):  
Wajahat Baig ◽  
Hafiz Muhammad Ali
Keyword(s):  
Experimental Investigation ◽  
Thermal Storage ◽  
Solar Air Heater ◽  
Storage Medium ◽  
Double Pass ◽  
Foam Aluminum ◽  
Air Heater

scholarly journals An experimental investigation of performance of a double pass solar air heater with thermal storage medium

2015 ◽  
Vol 19 (5) ◽  
pp. 1699-1708 ◽  
Author(s):  
Hafiz Ali ◽  
Arslan Bhatti ◽  
Muzaffar Ali
Keyword(s):  
Experimental Investigation ◽  
Thermal Storage ◽  
Paraffin Wax ◽  
Maximum Efficiency ◽  
Solar Air Heater ◽  
Storage Medium ◽  
Absorber Plate ◽  
Double Pass ◽  
Air Heater ◽  
Useful Heat

The performance of a double pass solar air heater was experimentally investigated using four different configurations. First configuration contained only absorber plate whereas copper tubes filled with thermal storage medium (paraffin wax) were added on the absorber plate in the second configuration. Aluminum and steel rods as thermal enhancer were inserted in the middle of paraffin wax of each tube for configurations three and four respectively. Second configuration provided useful heat for about 1.5 hours after the sunset compared to first configuration. Configurations three and four provided useful heat for about 2 hours after the sunset. The maximum efficiency of about 96% was achieved using configuration three (i.e. using Aluminum rods in the middle of copper tubes filled with paraffin wax).

Experimental investigation of a double pass converging finned wire mesh packed bed solar air heater

2019 ◽  
Vol 21 ◽  
pp. 713-723 ◽  
Author(s):  
Satyender Singh ◽  
Laxmikant Dhruw ◽  
Subhash Chander
Keyword(s):  
Experimental Investigation ◽  
Packed Bed ◽  
Wire Mesh ◽  
Solar Air Heater ◽  
Double Pass ◽  
Air Heater

scholarly journals Experimental Study on Double-Pass Solar Air Heater with and without using Phase Change Material

2019 ◽  
Vol 25 (2) ◽  
pp. 1-17 ◽  
Author(s):  
Abdulrahman Shakir Mahmood
Keyword(s):  
Experimental Study ◽  
Phase Change ◽  
Phase Change Material ◽  
Air Temperature ◽  
Thermal Performance ◽  
Thermal Storage ◽  
Solar Air Heater ◽  
Double Pass ◽  
Air Heater ◽  
Change Material

In this paper, an experimental study was conducted to enhance the thermal performance of a double-pass solar air heater (SAH) using phase change material (PCM) for thermal storage at climatic conditions of Baghdad city - Iraq. The double-pass solar air heater integrated with thermal storage system was manufactured and tested to ensure that the air heating reserved after the absence of the sun. The rectangular cavity filled with paraffin wax was used as a latent heat storage and incorporated into the lower channel of solar air heater. Experiments were carried out to evaluate the charging and discharging characteristics of two similar designed solar air collectors with and without using phase change material at a constant air mass flow rate of (0.0375 kg/sec). The parameters that affect the thermal performance of the SAH with and without the PCMs presented by solar radiation, the difference in air temperature, outlet air temperature, instantaneous thermal efficiency, and daily efficiency are evaluated. The experimental results show that when using the PCM, the temperature of the outlet air was enhanced and increased over the ambient temperature by (1.5 - 6.5 C) after sunset for 5 hours period. It was found that the instantaneous thermal efficiency of the heater using thermal storage exceeds 100% after sunset, this is due to a large amount of heat stored in the paraffin wax that has been released during the discharge process. Also, it was found that the daily efficiency of the double pass SAH integrated with and without thermal energy storage unit was (56, 47%) respectively.  

Experimental investigation of a novel thermal storage solar air heater (TSSAH) based on flat micro-heat pipe arrays

2021 ◽  
Vol 173 ◽  
pp. 639-651
Author(s):  
Tengyue Wang ◽  
Yaohua Zhao ◽  
Yanhua Diao ◽  
Cheng Ma ◽  
Yubin Zhang ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Heat Pipe ◽  
Thermal Storage ◽  
Solar Air Heater ◽  
Air Heater ◽  
Micro Heat Pipe
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