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The magnetocaloric effect can be quantified with the following equation: = ((,)) ((,)) where is the adiabatic change in temperature of the magnetic system around temperature T, H is the applied external magnetic field, C is the heat capacity of the working magnet (refrigerant) and M is the magnetization of the refrigerant.
The research highlights PST MLCs' potential for efficient and compact cooling applications, offering an alternative to magnetocaloric systems. For EC cooling devices, the applied electric fields to the EC materials in the devices should be much lower than the dielectric breakdown field for reliable EC device operation while generating a high ECE.
The refrigeration requirements here is defined as electrical power to operate the refrigeration system. As the stored energy increases by a factor of 100, refrigeration cost only goes up by a factor of 20. Also, the savings in refrigeration for an HTSC system is larger (by 60% to 70%) than for an LTSC systems.
The ionocaloric refrigeration cycle is an advanced cooling technology that utilizes the ionocaloric effect, driven by an electrochemical field, to achieve efficient and eco-friendly refrigeration. By manipulating the electrochemical potential through ion addition or removal, significant temperature changes and entropy variations are achieved.
Elastocaloric materials are a class of advanced materials.These materials show a big change in temperature when mechanical stress is applied and then removed. This phenomenon, known as the elastocaloric effect, is the reversible thermal response of the material to mechanical loading and unloading.
Immersion cooling technology encompasses systems in which electronic components are directly exposed to and interact with dielectric fluids for cooling purposes. This includes systems using single-phase or two-phase dielectric fluids, leveraging their thermal capabilities to manage and dissipate heat generated by electronic components. [1]
Passive cooling covers all natural processes and techniques of heat dissipation and modulation without the use of energy. [1] Some authors consider that minor and simple mechanical systems (e.g. pumps and economizers) can be integrated in passive cooling techniques, as long they are used to enhance the effectiveness of the natural cooling process. [7]
The pressure varies gradually and the velocities of the gas are low. So the name "pulse" tube cooler is misleading, since there are no pulses in the system. The piston moves periodically from left to right and back. As a result, the gas also moves from left to right and back while the pressure within the system increases and decreases.