Development of phase change thermal control device

1972 ◽  
Author(s):  
B. SCHELDEN ◽  
J. GOLDEN
Keyword(s):  
Phase Change ◽  
Thermal Control ◽  
Control Device

A hollow microlattice based ultralight active thermal control device and its fabrication techniques and thermal performances

2021 ◽  
Author(s):  
Wenjun Xu ◽  
Longquan Liu ◽  
Junming Chen ◽  
Xinying Lv ◽  
Yongtao Yao
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Forced Convection ◽  
Liquid State ◽  
High Efficiency ◽  
Thermal Control ◽  
Test System ◽  
Control Device ◽  
Active Cooling ◽  
Change Material

Abstract This paper introduces a new thermal control device which has not only low weight and high efficiency but also passive and active cooling capabilities. The thermal control device mainly consists of hollow graphene-enhanced-metallic microlattice material, phase change material (PCM) and a peristatic pump. The PCM is inside the spatial-interconnected millimeter-scale diameter tubes, which are the basic constitution of the hollow microlattice material, in addition, the peristatic pump was connected with the tubes and used to force the liquid-state PCM to circulate inside the interconnected thin tubes. Thus, the proposed thermal control device takes combined advantages of the ultralight and high thermal transfer properties of the hollow graphene-enhanced-metallic microlattice materials, the thermal storage capability of the PCM and forced convection of the PCM driven by the peristatic pump as the PCM is in liquid state. The manufacturing process of the active thermal control device was also developed and proposed, which mainly includes additive manufacturing, composite electroless plating, polymer etching, liquid phase change material injecting and the peristatic pump connecting. In addition to that, a thermal test system was built and the effective thermal conductivities of the thermal control device in passive cooling and with active cooling modes were experimentally studied. The thermal control device can absorb heat and actively dissipate heat by means of forced convection. Consequently, the proposed active thermal control device can be used to guarantee the electronic components and spacecrafts operate in a specific temperature range.

scholarly journals Satellite Thermal Control Device Enhanced by Latent Heat of the Phase Change Material

2016 ◽  
Vol 44 (10) ◽  
pp. 887-894
Author(s):  
Tae Su Kim ◽  
Yoon Sub Shin ◽  
Taig Young Kim ◽  
Jung-gi Seo ◽  
Bum-Seok Hyun ◽  
...  
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Latent Heat ◽  
Thermal Control ◽  
Control Device ◽  
Change Material

Development of a Phase Change Thermal Control Device

1973 ◽  
Vol 10 (2) ◽  
pp. 99-100 ◽  
Author(s):  
B. G. SCHELDEN ◽  
J. O. GOLDEN
Keyword(s):  
Phase Change ◽  
Thermal Control ◽  
Control Device

Polymerase chain reaction with phase change as intrinsic thermal control

2013 ◽  
Vol 102 (17) ◽  
pp. 173701 ◽  
Author(s):  
Yi-Fan Hsieh ◽  
Eri Yonezawa ◽  
Long-Sheng Kuo ◽  
Shiou-Hwei Yeh ◽  
Pei-Jer Chen ◽  
...  
Keyword(s):  
Polymerase Chain Reaction ◽  
Phase Change ◽  
Thermal Control ◽  
Chain Reaction ◽  
Polymerase Chain

scholarly journals The effect of water’s presence around the Phase Change Material

2020 ◽  
Vol 24 (6 Part B) ◽  
pp. 4049-4059 ◽  
Author(s):  
Haythem Shili ◽  
Kamel Fahem ◽  
Souad Harmand ◽  
Jabrallah Ben
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Thermal Protection ◽  
Flow Direction ◽  
Operating Time ◽  
Thermal Control ◽  
Melting Time ◽  
Standard Case ◽  
Time Flow ◽  
Change Material

As part of the research in the field of thermal control of electronic components, a phase change material is confined in a liquid and is heated vertically on one side by a hot plate. The presence of the liquid around the phase change material prevents the formation of air bubbles produced in case of direct contact between the hotplate and the phase change material (extends the lifetime of the phase change material by reducing overheating zones). It improves heat transfer by increasing the thermal conductivity around the phase change material (raising the thermal exchange surface) and by accelerating the convective transfer. This work examines experimentally and numerically the effect of the water on the phase change material and on the heating plate. The water is used around the phase change material and a comparative study of the comportment of some important parameters like the melt front form, melting time, flow direction, temperature, and operating time is realized. It is found that the presences of the liquid around the phase change material seems to be more interesting for a thermal protection role than the standard case of the phase change material directly heated by the hotplate.

scholarly journals Flow and heat transfer performance of plate phase change energy storage heat exchanger

2019 ◽  
Vol 23 (3 Part B) ◽  
pp. 1989-2000
Author(s):  
Ji-Min Zhang ◽  
Shi-Ting Ruan ◽  
Jian-Guang Cao ◽  
Tao Xu
Keyword(s):  
Heat Transfer ◽  
Energy Storage ◽  
Heat Exchanger ◽  
Phase Change ◽  
Thermal Control ◽  
Heat Transfer Characteristics ◽  
Liquid Distribution ◽  
Transfer Characteristics ◽  
Flow And Heat Transfer ◽  
Short Time

In the present work, the phase change energy storage heat exchanger in thermal control system of short-time and periodic working satellite payloads is taken as the research object. Under the condition of constant heated power of the satellite payload, the heat transfer characteristics of phase change energy storage heat exchanger are analyzed by numerical simulation and experimental method. The heat exchanger with fin arrays to enhance heat transfer is filled with tetradecane, whose density varies with temperature. The flow field distribution, the solid-liquid distribution, the temperature distribution, and the phase change process in the plate phase change energy storage heat exchanger unit are analyzed. The flow and heat transfer characteristics of heat exchangers under different fluid-flow rates and temperature were investigated.

A Numerical Study on the Thermal Control of Lithium Batteries by Composite Phase Change Materials and Metal Foams

2021 ◽  
Author(s):  
Bernardo Buonomo ◽  
Oronzio Manca ◽  
Ferdinando Menale ◽  
Francesco Moriello ◽  
Simone Mancin
Keyword(s):  
Control System ◽  
Phase Change ◽  
Metal Foam ◽  
Numerical Study ◽  
Liquid Fraction ◽  
Convective Heat Transfer Coefficient ◽  
Thermal Control ◽  
Temperature Fields ◽  
Local Thermal Equilibrium ◽  
Thermal Control System

Abstract This study attempts to control the temperature peaks due to the operation of the battery itself by examining a two-dimensional model to numerically investigate the thermal control of a lithium battery of a commercial electric car. The battery has the dimensions of 8 cm × 31 cm × 67 cm and its capacity is equal to 232 Ah with 5.3 kWh. Thermal control is achieved by means of an internal layer of copper or aluminum foam and phase change material (paraffin), placed on the top of the battery and the external surfaces are cooled by a convective flow. The governing equations, written assuming the local thermal equilibrium for the metal foam, are solved with the finite volume method using the commercial code Ansys-Fluent. Different cases are simulated for different thicknesses of the thermal control system and external convective heat transfer coefficient. The results are given in terms of temperature fields, liquid fraction, surface temperature profiles as a function of time and temperature distributions along the outer surface of the battery for the different cases. In addition, some comparisons with pure PCM are provided to show the advantages of the composite thermal control system with PCM inside the metal foam.

Application of Phase Change Materials to Thermal Control of Electronic Modules: A Computational Study

1997 ◽  
Vol 119 (1) ◽  
pp. 40-50 ◽  
Author(s):  
D. Pal ◽  
Y. K. Joshi
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Cooling System ◽  
Computational Study ◽  
Power Level ◽  
Thermal Control ◽  
The Other ◽  
Three Dimensions ◽  
Temperature Isotherm ◽  
Laminate Thickness

A computational model is developed to predict the performance of phase change materials(PCMs) for passive thermal control of electronic modules during transient power variations or following an active cooling system failure. Two different ways of incorporating PCM in the module are considered. One is to place a laminate of PCM outside the multichip module, and the other is to place the PCM laminate between the substrate and the cold plate. Two different types of PCMs are considered. One is n-Eicosene, which is an organic paraffin, and the other one is a eutectic alloy of Bi/Pb/Sn/In. Computations are performed in three dimensions using a finite volume method. A single domain fixed grid enthalpy porosity method is used to model the effects of phase change. Effects of natural convection on the performance of PCM are also examined. Results are presented in the form of time-wise variations of maximum module temperature, isotherm contours, velocity vectors, and melt front locations. Effects of PCM laminate thickness and power levels are studied to assess the amount of PCM required for a particular power level. The results show that the PCMs are an effective option for passive cooling of high density electronic modules for transient periods.

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