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A phase-change material (PCM) is a substance which releases/absorbs sufficient energy at phase transition to provide useful heat or cooling. Generally the transition will be from one of the first two fundamental states of matter - solid and liquid - to the other.
Computational Fluid Dynamics (CFD) modeling and simulation for phase change materials (PCMs) is a technique used to analyze the performance and behavior of PCMs. The CFD models have been successful in studying and analyzing the air quality, natural ventilation and stratified ventilation, air flow initiated by buoyancy forces and temperature space for the systems integrated with PCMs.
These diagrams are used to represent which types of phase changes will occur in a material as it is cooled at different rates. These diagrams are often more useful than time-temperature-transformation diagrams because it is more convenient to cool materials at a certain rate (temperature-variable cooling), than to cool quickly and hold at a ...
Single-phase immersion uses a circulation method for the dielectric liquid across hot electronic components and to a heat exchanging approach. A single-phase fluid does not boil or undergo a phase change at any time during the cooling process. Two-phase immersion leverages the heat-absorbing phase change from liquid to gas [3]. It uses ...
The phase change effect can be intentionally used, or can be detrimental. Phase-change materials use the other phase transition between solid and liquid. Liquid gases may fall here, or into refrigerants, as their temperature is often maintained by evaporation. Liquid nitrogen is the best known example encountered in laboratories.
Phase-change cooling is an extremely effective way to cool the processor. A vapor compression phase-change cooler is a unit that usually sits underneath the PC, with a tube leading to the processor. Inside the unit is a compressor of the same type as in an air conditioner. The compressor compresses a gas (or mixture of gases) which comes from ...
Why a cooling blanket could help you actually rest. Kerry Justich. September 5, 2024 at 3:03 PM. ... gel-infused layers that disperse heat or phase change materials (PCMs) ...
These have been investigated for many applications, including cooling photovoltaic panels, [42] cooling electronic devices, [43] heat recovery systems, fuel cell systems, [44] [45] HVAC systems, [46] and desalination. [47] More and more, PHPs are synergistically combined with phase change materials. [43] [47]
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