scholarly journals Excellent Temperature-Control Based on Reversible Thermochromic Materials for Light-Driven Phase Change Materials System

Molecules ◽  
2019 ◽  
Vol 24 (8) ◽  
pp. 1623 ◽  
Author(s):  
Caixia Ren ◽  
Fangfang Liu ◽  
Malik Muhammad Umair ◽  
Xin Jin ◽  
Shufen Zhang ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Phase Change ◽  
Temperature Control ◽  
Phase Change Materials ◽  
Equilibrium Temperature ◽  
Thermal Conversion ◽  
Xenon Lamp ◽  
Material System ◽  
Conversion Performance ◽  
Change Material

Light-driven phase change materials (PCMs) have received significant attention due to their capacity to convert visible light into thermal energy, storing it as latent heat. However, continuous photo-thermal conversion can cause the PCMs to reach high thermal equilibrium temperatures after phase transition. In our study, a novel light-driven phase change material system with temperature-control properties was constructed using a thermochromic compound. Thermochromic phase change materials (TC-PCMs) were prepared by introducing 2-anilino-6-dibutylamino-3-methylfluoran (ODB-2) and bisphenol A (BPA) into 1-hexadecanol (1-HD) in various proportions. Photo-thermal conversion performance was investigated with solar radiation (low power of 0.09 W/cm2) and a xenon lamp (at a high power of 0.14 W/cm2). The TC-PCMs showed a low equilibrium temperature due to variations in absorbance. Specifically, the temperature of TC-PCM180 (ODB-2, bisphenol A and 1-HD ratio 1:2:180) could stabilize at 54 °C approximately. TC-PCMs exhibited reversibility and repeatability after 20 irradiation and cooling cycles.

Mathematical Modeling and Experimental Study on Building Ceiling System Incorporating Phase Change Material (PCM) for Energy Conservation

2006 ◽  
Author(s):  
A. Pasupathy ◽  
R. Velraj
Keyword(s):  
Energy Conservation ◽  
Phase Change ◽  
Phase Change Material ◽  
Phase Change Materials ◽  
Supply And Demand ◽  
Eutectic Mixture ◽  
Thermal Storage ◽  
Material System ◽  
Reference Case ◽  
Change Material

Thermal storage plays a major role in a wide variety of industrial, commercial and residential application when there is a mismatch between the supply and demand of energy. Several promising developments are taking place in the field of thermal storage using phase change materials (PCM) in buildings. In the present paper, a detailed study of the thermal performance of a phase change material system for energy conservation in building is analyzed and discussed. An experiment consisting of two identical test houses has been constructed to study the effect of having PCM panel on the roof of the building. One house is constructed without PCM on the room in order to provide a reference case for comparison with the experimental house that includes the phase change material. The PCM is an inorganic eutectic mixture, which has melting temperature in the range of 26 - 28°C. A mathematical model has been developed in which finite volume method is used to predict the thermal behavior of the ceiling system incorporating PCMs. A comparison with the experimental results is also made.

scholarly journals Simple in situ synthesis of SiC nanofibers on graphite felt as a scaffold for improving performance of paraffin-based composite phase change materials

RSC Advances ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 878-887
Author(s):  
Xiao Li ◽  
Hao Wang ◽  
Xuening Yang ◽  
Xiaoguang Zhang ◽  
Bin Ma
Keyword(s):  
Thermal Properties ◽  
Phase Change ◽  
Phase Change Materials ◽  
Thermal Conversion ◽  
In Situ Synthesis ◽  
Flexible Design ◽  
Composite Phase Change Materials ◽  
Composite Phase Change Material ◽  
Change Material

The composite phase change material has excellent thermal properties, good photo-thermal conversion efficiency and flexible design in size, which produces a type of material for applications in solar and buildings energy storage.

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