A comparative assessment of the battery liquid‐cooling system employing two coolants: Phase change material emulsion and water

2021 ◽  
Author(s):  
Naixing Yang ◽  
Juan Wang ◽  
Shiwei Xu ◽  
Jianxiao Zheng ◽  
Liangliang Wang ◽  
...  
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Cooling System ◽  
Comparative Assessment ◽  
Liquid Cooling ◽  
Liquid Cooling System ◽  
Change Material

Numerical Thermal Performance Investigation of an Electric Motor Passive Cooling System Employing Phase Change Materials

2021 ◽  
Author(s):  
Ali Deriszadeh ◽  
Filippo de Monte ◽  
Marco Villani
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Electric Motor ◽  
Phase Change Materials ◽  
Cooling System ◽  
Passive Cooling ◽  
Time Step ◽  
Cooling Performance ◽  
Passive Cooling System ◽  
Change Material

Abstract This study investigates the cooling performance of a passive cooling system for electric motor cooling applications. The metal-based phase change materials are used for cooling the motor and preventing its temperature rise. As compared to oil-based phase change materials, these materials have a higher melting point and thermal conductivity. The flow field and transient heat conduction are simulated using the finite volume method. The accuracy of numerical values obtained from the simulation of the phase change materials is validated. The sensitivity of the numerical results to the number of computational elements and time step value is assessed. The main goal of adopting the phase change material based passive cooling system is to maintain the operational motor temperature in the allowed range for applications with high and repetitive peak power demands such as electric vehicles by using phase change materials in cooling channels twisted around the motor. Moreover, this study investigates the effect of the phase change material container arrangement on the cooling performance of the under study cooling system.

scholarly journals Performance of beeswax phase change material (PCM) and heat pipe as passive battery cooling system for electric vehicles

2020 ◽  
Vol 21 ◽  
pp. 100655 ◽  
Author(s):  
Nandy Putra ◽  
Adjie Fahrizal Sandi ◽  
Bambang Ariantara ◽  
Nasruddin Abdullah ◽  
Teuku Meurah Indra Mahlia
Keyword(s):  
Phase Change ◽  
Heat Pipe ◽  
Phase Change Material ◽  
Electric Vehicles ◽  
Cooling System ◽  
Change Material

Study of a thermoelectric space cooling system integrated with phase change material

2015 ◽  
Vol 86 ◽  
pp. 187-198 ◽  
Author(s):  
Gang Tan ◽  
Dongliang Zhao
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Cooling System ◽  
Space Cooling ◽  
Change Material

Review of free cooling system using phase change material for building

2014 ◽  
Vol 80 ◽  
pp. 131-136 ◽  
Author(s):  
Saeed Kamali
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Cooling System ◽  
Free Cooling ◽  
Change Material

A Methodology of an Automotive Engine Cooling Using a Phase Change Material

2009 ◽  
Author(s):  
Kibum Kim ◽  
Kyung-wook Choi ◽  
Ki-hyung Lee ◽  
Kwan-soo Lee
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Heat Load ◽  
Cooling System ◽  
Heat Accumulator ◽  
Full Size ◽  
Automotive Engine ◽  
Excessive Heat ◽  
Engine Cooling ◽  
Change Material

The size of a cooling inventory is generally designed based on which size can endure the excessive heat load situations that occur sporadically. As a result, cooling systems are often too large for most normal driving modes. There have been numerous efforts to downsize the automotive engine cooling system using novel concepts and strategies (e.g. THEMIS cooling system, CoolMaster, UltimateCooling). However, in terms of the system design, preserving the passive cooling strategy may be simpler and more practical than implementing any major changes. Vetrovec (2008) proposed the use of a heat accumulator that has a phase change material (PCM) within the automotive cooling system. Excessive heat generated during severe operating conditions is stored in the heat accumulator, and it is dissipated during periods of low heat load. The heat dissipation capacity of the radiator and the amount of coolant in the cooling system are normally designed such that the system can sustain itself at peak heat load during acceleration and hill ascents in hot summer periods. Therefore, the unnecessarily large cooling inventory creates an overloaded vehicle which increases the fuel consumption rate. A heat accumulator which averages out the peak heat loads can reduce the entire cooling system remarkably in terms of both its volume and weight. Effective cooling in automobiles is beneficial in reducing harmful emissions as well as improving fuel economy. A simulation was conducted to validate the feasibility of using a novel cooling strategy that utilized the heat load averaging capabilities of a phase change material (PCM). Three prototypes were designed: full size, down sized, and a down sized prototype with a heat accumulator containing the PCM inside. When the full size of the cooling inventory was downsized by 30%, this smaller design failed to dissipate the peak heat load and consequently led to a significant increase in the coolant temperature, around 25 °C greater than that in the full size system. However, the peak heat load was successfully averaged out in the downsized system with a heat accumulator. Experimental study is also on-going to validate the simulation results and find more suitable PCM for the application.

scholarly journals Improvement of Properties of an Insulated Wall for Refrigerated Trailer-Numerical and Experimental Study

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 51
Author(s):  
Konrad Zdun ◽  
Tadeusz Uhl
Keyword(s):  
Numerical Model ◽  
Phase Change ◽  
Phase Change Material ◽  
Test Bench ◽  
Cooling System ◽  
Experimental Tests ◽  
Primary Energy ◽  
Wall Structure ◽  
Cold Store ◽  
Change Material

In the paper, we report our research on the improvement of thermal efficiency of refrigerated trailers by modification of their wall structure by placing a layer of phase change material inside them. The research was carried out in the field of transport, meeting the requirements of all classes provided for in the ATP agreement for refrigerated trailers. As part of the research, we formulated a numerical model of the proposed design of the refrigerator walls, which was subsequently validated by comparing the modeling results with the results of experimental tests carried out on a test bench designed specifically for this purpose. Based on the validated simulation conditions, we formulated the numerical model of a full-scale refrigerated semi-trailer, which was numerically tested under the conditions specified in the ATP Agreement. The results proved that adding a 6 mm layer of the SP-24 phase change material in each of the walls of the cold store allows the temperature inside the trailer to be kept below −20 °C for a period of 24 h without the need to supply cold from the outside during operation. The passive refrigerated semi-trailer system implemented in this manner with 6 mm PCM layer allows for a reduction in primary energy consumption by up to 86% in a period of 22 h. The mentioned percentage did not take into account the efficiency of the cooling system of the phase change material.

Enhanced solar still condensation by using a radiative cooling system and phase change material

Desalination ◽  
2019 ◽  
Vol 467 ◽  
pp. 43-50 ◽  
Author(s):  
A. Amarloo ◽  
M.B. Shafii
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Cooling System ◽  
Radiative Cooling ◽  
Solar Still ◽  
Change Material

Experimental study of a personal cooling system integrated with phase change material

2020 ◽  
Vol 170 ◽  
pp. 115026 ◽  
Author(s):  
Yiyuan Qiao ◽  
Tao Cao ◽  
Jan Muehlbauer ◽  
Yunho Hwang ◽  
Reinhard Radermacher
Keyword(s):  
Experimental Study ◽  
Phase Change ◽  
Phase Change Material ◽  
Cooling System ◽  
Personal Cooling ◽  
Change Material
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