scholarly journals Investigation of PEG/mixed metal oxides as a new form-stable phase change material for thermoregulation and improved UV ageing resistance of bitumen

RSC Advances ◽  
2020 ◽  
Vol 10 (73) ◽  
pp. 44903-44911
Author(s):  
Suhong Zhu ◽  
Tao Ji ◽  
Dongyu Niu ◽  
Zhengxian Yang
Keyword(s):  
Service Life ◽  
Phase Change ◽  
Metal Oxides ◽  
Phase Change Material ◽  
Extreme Temperature ◽  
Stable Phase ◽  
Mixed Metal Oxides ◽  
Uv Aging ◽  
New Form ◽  
Change Material

As a new performance-enhancing additive, PEG/MMO PCM is expected to be effective in regulating extreme temperature and resisting UV aging of bitumen binder and thus could significantly extend the service life of bitumen pavement.

scholarly journals Diffusion of Shape Stabilized PEG-SiO2 as a Driver for Producing Thermoregulating Facing Bricks

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1395
Author(s):  
Angel Serrano ◽  
Ana M. Borreguero ◽  
Isabel Iglesias ◽  
Anselmo Acosta ◽  
Juan F. Rodríguez ◽  
...  
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Sol Gel ◽  
Effective Diffusion ◽  
Gelation Time ◽  
Stable Phase ◽  
Liquid Form ◽  
Indoor Temperature ◽  
Adsorption Capacities ◽  
Change Material

A novel form-stable phase-change material (PCM) based on facing bricks was developed by incorporating thermoregulating PEG-SiO2, synthetized by sol-gel method and based on polyethylene glycol as phase-change material and silica as stabilizer compound. The PEG-SiO2 in its liquid form (sol) is firstly adsorbed inside the porous brick and lastly stabilized (gel) by controlling its gelation time, obtaining form-stable PCMs with PEG-SiO2 contents within 15–110 wt.%. Kinetic adsorption curves of the sol into bricks having different porosities as well as maximum adsorption capacities were obtained. The effective diffusion coefficients (Deff) were estimated by means of Fick’s second law, it being possible to predict the adsorption of sol PEG-SiO2 by the brick as function of its porosity and the free diffusion coefficient. Finally, form-stable PCMs demonstrated an improvement in their thermal energy storage capacity (up to 338%), these materials being capable of buffering the indoor temperature during an entire operational day

A polyethylene glycol-based form-stable phase change material supported by nanoarray-modified metal foam

2021 ◽  
pp. 103592
Author(s):  
Tongyan Ren ◽  
Guotong Du ◽  
Qiyu Li ◽  
Yuechuan Wang ◽  
Xiaowei Fu ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Phase Change ◽  
Phase Change Material ◽  
Metal Foam ◽  
Stable Phase ◽  
Change Material

scholarly journals Phase Change Material Used for Masonry Joints: Numerical Simulation and Scale Test

Proceedings ◽  
2019 ◽  
Vol 34 (1) ◽  
pp. 16
Author(s):  
Jiang ◽  
Liu ◽  
Yuan
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Phase Change ◽  
Phase Change Material ◽  
Phase Change Materials ◽  
Masonry Wall ◽  
Wall Structure ◽  
Thermal Coefficient ◽  
New Form ◽  
Change Material

In order to effectively improve the thermal performance of the thermal insulation masonry wall, the thermal bridge effect of the grey joint on the heat transfer of the wall structure was studied. A brand-new form of phase change material walls, which used phase change materials in the wall parts to build ash joints, was carried out. The application of phase change material mortar, which was different from conventional "Hamburger" phase change material walls, was demonstrated to be a useful tool to reduce the thermal coefficient of the masonry wall. Furthermore, the scale-down test and numerical simulation of the heat transfer coefficient of the phase change material wall with different distribution of ash joints were experimented and discussed, and the feasibility of the new-form phase change material wall within the error range was verified.

Form-stable phase change material based on fatty acid/wood flour composite and PVC used for thermal energy storage

2020 ◽  
Vol 209 ◽  
pp. 109663 ◽  
Author(s):  
Xing Jingchen ◽  
Yang Keyan ◽  
Zhou Yucheng ◽  
Yu Yuxiang ◽  
Chang Jianmin ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Energy Storage ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Wood Flour ◽  
Stable Phase ◽  
Change Material
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