Evacuated tube solar thermal collector with enhanced phase change material thermal storage: An experimental study

2022 ◽  
Vol 46 ◽  
pp. 103838
Author(s):  
Hossein Senobar ◽  
Mohamad Aramesh ◽  
Bahman Shabani
Keyword(s):  
Experimental Study ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Storage ◽  
Solar Thermal ◽  
Solar Thermal Collector ◽  
Evacuated Tube ◽  
Change Material

Investigation on Phase Change Behavior of Paraffin Phase Change Material in a Spherical Capsule for Solar Thermal Storage Units

2017 ◽  
Vol 39 (9) ◽  
pp. 775-783 ◽  
Author(s):  
Kandasamy Hariharan ◽  
Gowri Sankar Senthil Kumar ◽  
Govindaraj Kumaresan ◽  
Ramalingam Velraj
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Thermal Storage ◽  
Solar Thermal ◽  
Change Behavior ◽  
Spherical Capsule ◽  
Change Material ◽  
Storage Units

scholarly journals Sensitivity Analysis of Packed Bed Phase Change Material Thermal Storage for Domestic Solar Thermal System

2020 ◽  
Vol 24 (1) ◽  
pp. 378-391
Author(s):  
Mikelis Dzikevics ◽  
Ivars Veidenbergs ◽  
Kęstutis Valančius
Keyword(s):  
Sensitivity Analysis ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Storage ◽  
Solar Thermal ◽  
Thermal System ◽  
Climate Data ◽  
Solar Fraction ◽  
Solar Thermal System ◽  
Change Material

AbstractIncrease in solar fraction has been noted as one of the main goals for wider application of domestic solar thermal systems. To increase solar fraction, higher energy density thermal storage availability is a key point. In this paper phase change materials have been analysed as part of a domestic solar thermal system. Sensitivity analysis of annual simulation in TRNSYS with climate data of Riga, Latvia is used. The paper also explores better methods for evaluating phase change material (PCM) performance based on temperature measurements in PCM. The results showed that the melting point of PCM and temperature set point of an auxiliary heater have the highest sensitivity of aspects analysed in the paper. It also reports that the coefficient of variation of energy in PCM correlates well with solar fraction and can be used as a parameter to evaluate PCM’s suitability for certain applications.

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.  

scholarly journals Experimental Study on Melting and Solidification of Phase Change Material Thermal Storage

2017 ◽  
Vol 180 ◽  
pp. 012030 ◽  
Author(s):  
H Ambarita ◽  
I Abdullah ◽  
C A Siregar ◽  
R E T Siregar ◽  
A D Ronowikarto
Keyword(s):  
Experimental Study ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Storage ◽  
Change Material ◽  
Melting And Solidification
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