scholarly journals An Experimental Study on the Thermal Performance of Phase-Change Material and Wood-Plastic Composites for Building Roofs

Energies ◽  
2017 ◽  
Vol 10 (2) ◽  
pp. 195 ◽  
Author(s):  
Min Chung ◽  
Jin Park
Keyword(s):  
Experimental Study ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Performance ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
Change Material

scholarly journals Thermal management of mobile devices

2010 ◽  
Vol 14 (1) ◽  
pp. 115-124 ◽  
Author(s):  
Weijan Shen ◽  
Fock-Lai Tan
Keyword(s):  
Experimental Study ◽  
Phase Change ◽  
Phase Change Material ◽  
Mobile Devices ◽  
Thermal Management ◽  
Thermal Performance ◽  
Mobile Device ◽  
Phone Calls ◽  
Long Duration ◽  
Change Material

This paper presents the experimental study of using phase change material in the cooling of the mobile devices. It investigates the thermal performance of transient charging and discharging of mobile devices in three different situations; making phone calls frequently, making long duration calls, and making occasional calls. The results show that mobile devices are heated up fastest during the long duration usage. Experiments are also conducted to determine the effect of fins and effect of orientation of the mobile device on its thermal performance.

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.  

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