Series of solid-solid phase change materials with ultra-high thermal stability and controllable phase change temperature: kilogram-leveled preparation and application investigation

2021 ◽  
Vol 36 ◽  
pp. 102405
Author(s):  
Changren Xiao ◽  
Shaojun Li ◽  
Shengtian Zhu ◽  
Guoqing Zhang ◽  
Xiaoqing Yang
Keyword(s):  
Thermal Stability ◽  
Phase Change ◽  
Phase Change Materials ◽  
Solid Phase ◽  
High Thermal Stability ◽  
Phase Change Temperature ◽  
Change Temperature

Thermal Stability Experimental Study on Three Types of Organic Binary Phase Change Materials Applied in Thermal Energy Storage System

2018 ◽  
Vol 10 (4) ◽  
Author(s):  
Song Mengjie ◽  
Liao Liyuan ◽  
Niu Fuxin ◽  
Mao Ning ◽  
Liu Shengchun ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Energy Storage ◽  
Phase Change ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials ◽  
Research Work ◽  
Energy Storage Materials ◽  
Phase Change Temperature ◽  
Change Temperature

Phase change materials (PCMs) are widely applied in recent decades due to their good thermal performance in energy systems. Their applications are mainly limited by the phase change temperature and latent heat. Many publications are reported around the characteristic improvement of binary organic PCMs. The thermal stability study on organic binary PCMs used in thermal energy storage applications becomes fundamental and meaningful. In this study, thermal stability of three types of organic binary PCMs was experimentally investigated, which are frequently used in building and industry applications. To qualitatively investigate the stability of composite PCMs, differential scanning calorimetry (DSC), and Fourier-transform infrared spectroscopy (FT-IR) spectra testing of samples were also conducted. Experimental results showed that the selected composite PCMs, capric acid (CA), and myristic acid (MA), had the best thermal performances, with its phase change temperature unchanged and heat of fusion decreased only 8.88 J/g, or 4.55%, after 2000 thermal cycles. Furthermore, quality ratio of required PCMs as the variation of operation duration was analyzed to quantitatively prepare the materials. The PCMs can successfully operate about 3125 times when prepared as 1.20 times of its calculated value by starting fusion heat. Conclusions of this research work can also be used for guiding the selection and preparation of other energy storage materials.

Research on the Thermal Storage Performance of Solid-Solid Phase-Change Material Used in the Wall

2011 ◽  
Vol 347-353 ◽  
pp. 2801-2804 ◽  
Author(s):  
Quan Ying Yan ◽  
Li Li Jin
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Binary Systems ◽  
Phase Change Materials ◽  
Solid Phase ◽  
Thermal Storage ◽  
Phase Change Temperature ◽  
Change Temperature ◽  
Materials Used ◽  
Change Material

Solid-solid phase change material can increase the thermal storage capacity of the wall, decrease the indoor temperature fluctuation and building energy consumption when it was used in the phase change material (PCM) wall. This paper investigated experimentally the phase change temperature and latent heat of polyalcohols binary system with different component, and analyzed the feasibility of phase change wall. The results show that binary systems have suitable phase change temperature and bigger phase change latent. They are ideal phase change materials used in the wall.

Custom design of solid–solid phase change material with ultra-high thermal stability for battery thermal management

2020 ◽  
Vol 8 (29) ◽  
pp. 14624-14633 ◽  
Author(s):  
Changren Xiao ◽  
Guoqing Zhang ◽  
Zhenghui Li ◽  
Xiaoqing Yang
Keyword(s):  
Thermal Stability ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Management ◽  
Solid Phase ◽  
High Thermal Stability ◽  
Management Performance ◽  
Battery Thermal Management ◽  
Custom Design ◽  
Change Material

The custom-designed solid–solid phase change material possesses ultra-high thermal stability and exhibits outstanding battery thermal management performance.

Preparation and Thermal Propertites of Polyethylene Glycol/ Silica Hollow Nanospheres Composite as Shape-Stabilized Phase Change Materials

2013 ◽  
Vol 773 ◽  
pp. 534-537 ◽  
Author(s):  
Li Li Feng ◽  
Jing Jing Tong ◽  
Chong Yun Wang
Keyword(s):  
Thermal Properties ◽  
Polyethylene Glycol ◽  
Phase Change ◽  
Porous Structure ◽  
Phase Change Materials ◽  
Hollow Nanospheres ◽  
Lower Phase ◽  
Phase Change Temperature ◽  
Change Temperature ◽  
Change Material

Shape-stabilized phase change material (PCM) composed of polyethylene glycol and silica hollow nanospheres was prepared by a vacuum impregnating method. Thermal properties of the composite PCM were investigated by various techniques. Lower phase change temperature and enthalpy of the composite PCM were observed. It is concluded that the phase change properties of the composite PCM are influenced by the adsorption confinement of the PEG segments from the porous structure of the silica hollow nanospheres.

Enhancement in Thermal Property of Phase Change Microcapsule with Modified Carbon Nanotube

2013 ◽  
Vol 856 ◽  
pp. 314-317 ◽  
Author(s):  
Min Li ◽  
Zhi Shen Wu
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Thermal Stability ◽  
Phase Change ◽  
Stearyl Alcohol ◽  
Analysis Method ◽  
Phase Change Temperature ◽  
Heating And Cooling ◽  
Change Temperature ◽  
Thermal Stability Of

Carbon nanotubes grafted with stearyl alcohol (CNTs-SA) was used to enhance the thermal conductivities of the microcapsules. Differential Scanning Calorimeter (DSC) and thermogravimetry (TG) analysis method are employed to measure thermal properties of the prepared MicroPCM containing the grafted CNTs (MicroPCM/CNTs-SA). The results indicated the phase change temperature and latent heat of MicroPCM/CNTs-SA was 26.2°C and 47.7J/g. An increase in thermal conductivity, thermal stability of MicroPCM/CNTs-SA was observed. After 100 heating and cooling cycles, MicroPCM/CNTs-SA still had better durability and thermal stability.

scholarly journals Liquid Crystals as Phase Change Materials for Thermal Stabilization

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Eva Klemenčič ◽  
Mitja Slavinec
Keyword(s):  
Liquid Crystals ◽  
Heat Source ◽  
Electric Field ◽  
Phase Change ◽  
Phase Change Materials ◽  
Thermal Stabilization ◽  
Phase Change Temperature ◽  
Thermotropic Liquid Crystals ◽  
Key Factor ◽  
Change Temperature

Thermal stabilization exploiting phase change materials (PCMs) is studied theoretically and numerically. Using the heat source approach in numerical simulations, we focus on phase change temperature as a key factor in improving thermal stabilization. Our focus is to analyze possible mechanisms to tune the phase change temperature. We use thermotropic liquid crystals (LCs) as PCMs in a demonstrative system. Using the Landau-de Gennes mesoscopic approach, we show that an external electric field or appropriate nanoparticles (NPs) dispersed in LCs can be exploited to manipulate the phase change temperature.

O-Doped Sb70Se30 Phase-Change Materials for High Thermal Stability and Fast Speed

2017 ◽  
Vol 46 (12) ◽  
pp. 6811-6816 ◽  
Author(s):  
Yuemei Sun ◽  
Yifeng Hu ◽  
Xiaoqin Zhu ◽  
Hua Zou ◽  
Yongxing Sui ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Phase Change ◽  
Phase Change Materials ◽  
High Thermal Stability ◽  
Fast Speed
Sign in / Sign up

Export Citation Format

Share Document