scholarly journals USING PHASE CHANGE MATERIALS IN PHOTOVOLTAIC SYSTEMS FOR CELL TEMPERATURE REDUCTION: A FINITE DIFFERENCE SIMULATION METHOD

2016 ◽  
Vol 2 (4) ◽  
Author(s):  
Panagiotis Kladisios
Keyword(s):  
Finite Difference ◽  
Phase Change ◽  
Phase Change Materials ◽  
Simulation Method ◽  
Photovoltaic Systems ◽  
Cell Temperature ◽  
Temperature Reduction

scholarly journals Photovoltaic Cooling Utilizing Phase Change Materials

2020 ◽  
Vol 160 ◽  
pp. 02004
Author(s):  
Suhil Kiwan ◽  
Hisham Ahmad ◽  
Ammar Alkhalidi ◽  
Wahib O Wahib ◽  
Wael Al-Kouz
Keyword(s):  
Phase Change ◽  
Experimental Test ◽  
Phase Change Materials ◽  
Experimental Tests ◽  
Photovoltaic System ◽  
Cell Temperature ◽  
Average Cell ◽  
Solar Systems ◽  
Pv Panel ◽  
Change Material

A theoretical analysis based on mathematical formulations and experimental test to a photovoltaic system cooled by Phase Change Material (PCM) is carried out and documented. The PCM is attached to the back of the PV panel to control the temperature of cells in the PV panel. The experimental tests were done to solar systems with and without using PCM for comparison purposes. A PCM of paraffin graphite panels of thickness15 mm has covered the back of the panel. This layer was covered with an aluminum sheet fixed tightly to the panel frame. In the experimental test, it was found that when the average cell temperature exceeds the melting point temperature of the PCM, the efficiency of the system increases. However, when the cell temperature did not exceed the melting temperature of the PCM, the use of the PCM will affect negatively the system efficiency.

scholarly journals A Meta Study of the Relationship Between Phase Change Material Parameters and Temperature Reduction in Fire Fighter Protective Clothing

2019 ◽  
Vol 6 ◽  
pp. 28-37
Author(s):  
Josef Richmond ◽  
Lesley Spencer ◽  
Tommy Tran ◽  
Evan Williams
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Protective Clothing ◽  
Phase Change Materials ◽  
High Heat ◽  
Heat Fluxes ◽  
Fire Fighter ◽  
High Flux ◽  
Temperature Reduction ◽  
Change Material

Firefighters are exposed to high risk scenarios in which the prevention of extreme heat injuries is largely dependent on the effectiveness of their protective clothing. The following meta-study examines contemporary literature to determine the usefulness of phase change materials (PCM’s) in improving the effectiveness of the current firefighter protective clothing (FFPC) model in order to better protect firefighters. The time- temperature for multiple PCM’s in environments with low, medium and high heat fluxes (taken as 2.5-5 kW/m2 for 700 seconds, 10-15 kW/m2 for 300 seconds and 20-40 kW/m2for 30 seconds respectively) were compared in terms of the rate of temperature increase and final temperature. The study found that PCM I produced the best temperature reduction in a low flux, PCM K did so in a medium flux, and PCM B did so in a high flux. The study also found that overall the PCMs were most effective in a low flux, therefore further study should be directed towards creating PCMs that are more effective in high-flux environments. Keywords: Phase Change Material; Fire Fighter Protective Clothing; Heat Flux

scholarly journals Temperature reduction due to the application of phase change materials

2008 ◽  
Vol 40 (5) ◽  
pp. 937-944 ◽  
Author(s):  
Conrad Voelker ◽  
Oliver Kornadt ◽  
Milan Ostry
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Temperature Reduction

scholarly journals Peak indoor air temperature reduction for buildings in hot-humid climate using phase change materials

2020 ◽  
Vol 22 ◽  
pp. 100762
Author(s):  
Zeyad Amin Al-Absi ◽  
Mohd Isa Mohd Hafizal ◽  
Mazran Ismail ◽  
Ahmad Mardiana ◽  
Azhar Ghazali
Keyword(s):  
Phase Change ◽  
Air Temperature ◽  
Indoor Air ◽  
Phase Change Materials ◽  
Humid Climate ◽  
Temperature Reduction ◽  
Hot Humid Climate

Crystallization fractionation technology for paraffin-based phase change materials production

2020 ◽  
pp. 33-38
Author(s):  
S.S. Kruglov (Jr.) ◽  
◽  
G.L. Patashnikov ◽  
S.S. Kruglov (Sr.) ◽  
◽  
...  
Keyword(s):  
Phase Change ◽  
Phase Change Materials
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