Research on Performance and Safety of Composite Inorganic Phase-Change Materials (NaNO3/SiO2/C) under Low-temperature Cold Shock

2021 ◽  
Author(s):  
Liang Liu ◽  
Aixiang Wu ◽  
Yun Huang ◽  
Junqin Li
Keyword(s):  
Low Temperature ◽  
Phase Change ◽  
Phase Change Materials ◽  
Cold Shock

scholarly journals Analysis of heat and mass transfer mechanism during thermal energy storage and temperature regulation

2020 ◽  
Vol 24 (5 Part B) ◽  
pp. 3185-3193
Author(s):  
Sina Dang ◽  
Hongjun Xue ◽  
Xiaoyan Zhang ◽  
Chengwen Zhong
Keyword(s):  
Mass Transfer ◽  
Energy Storage ◽  
Low Temperature ◽  
Phase Change ◽  
Heat And Mass Transfer ◽  
Latent Heat ◽  
Temperature Regulation ◽  
Phase Change Materials ◽  
Heat Energy ◽  
Temperature Environment

To strengthen the heat and mass transfer capacity and improve the temperature regulation rate, potential storage is taken as the research object in this research to study the heat energy storage of the battery in the low temperature environment. Lattice Boltzmann method is adopted to study the heat energy storage influence mechanism of the temperature regulation system of the low temperature phase-change materials. In addition, the influence of different physical parameters (thermal conductivity and latent heat of phase change) on the thermal insulation of the system in the process of temperature control is revealed. The results show that the mechanism of heat and mass transfer in the process of heat storage and temperature control is related to the different physical properties of phase change materials. The decrease of thermal conductivity and the increase of latent heat of phase change materials will greatly increase the effect of heat energy storage. Therefore, under the action of phase change latent heat, phase change material can effectively extend the holding time of the battery in the low temperature environment.

Feasibility of using microencapsulated phase change materials as filler for improving low temperature performance of rubber sealing materials

Soft Matter ◽  
2017 ◽  
Vol 13 (42) ◽  
pp. 7760-7770 ◽  
Author(s):  
Avinash Tiwari ◽  
Sergey N. Shubin ◽  
Ben Alcock ◽  
Alexander B. Freidin ◽  
Brede Thorkildsen ◽  
...  
Keyword(s):  
Low Temperature ◽  
Phase Change ◽  
Phase Change Material ◽  
Phase Change Materials ◽  
Microencapsulated Phase Change Material ◽  
Temperature Performance ◽  
Sealing Material ◽  
Microencapsulated Phase Change Materials ◽  
Change Material ◽  
Sealing Materials

The feasibility of microencapsulated phase change material (MEPCM) as filler in a rubber sealing material to improve sealing under transient cooling (in a so-called blowdown scenario) is investigated here.

Thermal buffering performance of composite phase change materials applied in low-temperature protective garments

2017 ◽  
Vol 31 (16-19) ◽  
pp. 1744102 ◽  
Author(s):  
Kai Yang ◽  
Mingli Jiao ◽  
Yuanyuan Yu ◽  
Xueying Zhu ◽  
Rangtong Liu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Phase Change ◽  
Phase Change Materials ◽  
Buffering Capacity ◽  
Climate Chamber ◽  
Functional Textiles ◽  
Composite Phase Change Materials ◽  
Change Temperature ◽  
Thermal Buffering ◽  
Change Material

Phase change material (PCM) is increasingly being applied in the manufacturing of functional thermo-regulated textiles and garments. This paper investigated the thermal buffering performance of different composite PCMs which are suitable for the application in functional low-temperature protective garments. First, according to the criteria selecting PCM for functional textiles/garments, three kinds of pure PCM were selected as samples, which were [Formula: see text]-hexadecane, [Formula: see text]-octadecane and [Formula: see text]-eicosane. To get the adjustable phase change temperature range and higher phase change enthalpy, three kinds of composite PCM were prepared using the above pure PCM. To evaluate the thermal buffering performance of different composite PCM samples, the simulated low-temperature experiments were performed in the climate chamber, and the skin temperature variation curves in three different low temperature conditions were obtained. Finally composite PCM samples’ thermal buffering time, thermal buffering capacity and thermal buffering efficiency were calculated. Results show that the comprehensive thermal buffering performance of [Formula: see text]-octadecane and [Formula: see text]-eicosane composite PCM is the best.

scholarly journals Potentialities of a Low Temperature Solar Heating System Based on Slurry Phase Change Materials (PCS)

2014 ◽  
Vol 62 ◽  
pp. 355-363 ◽  
Author(s):  
Gianluca Serale ◽  
Ylenia Cascone ◽  
Alfonso Capozzoli ◽  
Enrico Fabrizio ◽  
Marco Perino
Keyword(s):  
Low Temperature ◽  
Phase Change ◽  
Phase Change Materials ◽  
Heating System ◽  
Solar Heating ◽  
Slurry Phase

scholarly journals Investigation on compatibility and thermal reliability of phase change materials for low-temperature thermal energy storage

2020 ◽  
Vol 9 (4) ◽  
Author(s):  
Jaya Krishna Devanuri ◽  
Uma Maheswararao Gaddala ◽  
Vikas Kumar
Keyword(s):  
Energy Storage ◽  
Low Temperature ◽  
Phase Change ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Sodium Acetate ◽  
Phase Change Materials ◽  
Freezing Point ◽  
Thermal Cycles ◽  
Thermal Reliability

AbstractTwo of the important aspects for the successful utilization of phase change materials (PCMs) for thermal energy storage systems are compatibility with container materials and stability. Therefore, the present study is focused on testing the corrosion resistance and surface characteristics of metals in contact with PCMs and thermal behavior of PCMs with heating/cooling cycles. The PCM selection is made by targeting low temperature (<100 °C) heat storage applications. The PCMs considered are paraffin wax, sodium acetate tri-hydrate, lauric acid, myristic acid, palmitic acid, and stearic acid. The metal specimens tested are aluminum, copper, and stainless steel because of their wide usage in thermal equipment. The tests are performed by the method of immersion corrosion test, and ASTM G1 standards are followed. The experiments are carried out at 80 °C and room temperature (30 °C) for the duration of 10, 30, and 60 days. Pertaining to thermal stability 1500 melting/freezing cycles are performed. Investigation has been carried out in terms of corrosion rate, SEM analysis of metal specimens, appearance of PCMs, and variation of thermophysical properties at 0th, 1000th, and 1500th thermal cycles. The most affected area of corrosion, including the dimension of pits, is presented, and comparison is made. Based on the corrosion experiments, recommendations are made for the metal–PCM pairs. Pure sodium acetate trihydrate is observed to suffer from phase segregation and supercooling. After 1500 thermal cycles, the variation in melting and freezing point temperatures for rest of the five PCMs are in the range of − 1.63 to 1.57 °C and − 4.01 to 2.66 °C. Whereas, reduction in latent heat of melting and freezing are in the range of 17.6–28.95% and 15.2–26.78%.

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