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عنوان فارسی مقاله:
کاربرد دیود حرارتی پلتیر در پمپ حرارتی مگنتوکالری
عنوان انگلیسی مقاله:
Application of Peltier thermal diodes in a magnetocaloric heat pump
سال انتشار : 2017
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مقدمه انگلیسی مقاله:
1. Introduction
Room temperature magnetic refrigeration is a promising alternative to vapor-compression technology. A major advantage is the absence of a hazardous refrigerant. The working principle is based on the Magneto-Caloric Effect (MCE) induced by magnetization and demagnetization of a Magneto-Caloric Material (MCM). For practical applications Active Magnetic Regeneration (AMR) is applied to reach the required temperature span. Ample explanation of the MCE and possible AMR implementations is given in the book written by Kitanovski et al. [1]. A recurring topic is the improvements needed for commercialization of magnetic refrigeration. Prevalent attention is given to the power density, defined as cooling power per kilogram MCM. This metric is structurally too small for prototypes at efficient operating conditions. Consequently, large amounts of magnetocaloric material are needed, yielding a big magnetized volume and resulting permanent magnet mass. Both device cost and environmental impact remain subpar for as long as no improvement is made. The operating frequency or number of thermodynamic cycles per unit time of a device is directly proportional to its power density. Performance of conventional AMR implementations degrades at high frequencies due to convective heat transfer limitations between the MCM and transport fluid. Either the MCE is not fully exploited by lack of heat exchanged or the pressure work to overcome fluid resistance becomes unreasonably high due to the low permeability. An alternative to convective heat transfer between the MCM and the fluid, employing solid-state thermal diodes, was proposed by Kitanovski and Egolf [2]. Further investigation is carried out by Silva [3,4], Olsen [5], Tomc [6,7] and Egolf himself [8]. Theirconclusion is unanimously positive and further research is recommended. Tomc [6] has created the most elaborate model thus far when focusing on thermoelectric thermal diodes based on the Peltier effect. In this article, the level of detail and realism are further improved by adding a model for the thermoelectric effect and going from quasi 2D to full 2D by incorporating the heat exchangers.
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کلمات کلیدی:
Thermoelectric Applications - Thermoelectric https://thermal.ferrotec.com/technology/thermoelectric-reference.../thermalref03/ This is an overview of applications for peltier thermoelectric cooler modules from Ferrotec's ... A thermoelectric cooler is an active cooling module whereas a heat sink ... Laser diode coolers; Long lasting cooling devices; Low noise amplifiers. What is Peltier Effect, its application|Peltier devices use www.ooshutup.com/what-is-peltier-effect-application-peltier-devices-use-physics/ Jul 3, 2014 - The Peltier effect is a temperature difference created by applying a voltage between 2 electrodes connected to semiconductor material. Magnetocaloric Energy Conversion: From Theory to Applications https://books.google.com/books?isbn=331908741X Andrej Kitanovski, Jaka Tušek, Urban Tomc - 2014 - Science From Theory to Applications Andrej Kitanovski, Jaka Tušek, Urban Tomc, Uroš ... the local exergy efficiency of a particular Peltier thermal diode mechanism. Thermoelectric Peltier Device Information (TE Heater / Cooler ... www.peltier-info.com/info.html Information on Peltier Devices (Thermoelectric Heater / Cooler / Generator Modules). ... It's best to use some kind of temperature sensor feedback (thermistor or ... an array of N and P doped semiconductors there isn't an actual diode junction. [PDF]Controlling Temperatures of Diode Lasers Thermoelectrically https://www.newport.com/.../AN01-Controlling-Temperatures-of-Laser-Diodes-Ther... Careful Thermal Design Stabilizes Performance of Diode Lasers and Detectors. Figure 1. A thermoelectric cooling couple. In many applications, active ... Searches related to Application of Peltier thermal diodes thermal diode sensor temperature diode sensor peltier diode symbol thermal transistor thermoelectric diode thermal diode rectification of heat flux thermal rectifier thermal diode heat pipe
