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Numerical Assessment of the Experimental Thermoelectric Cooling System Effectiveness

Gołębiowska Justyna, Widomski Marcin K.

Journal of Ecological Engineering

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2022

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Vol. 23, nr 12

99--110

EN

Solid-state thermoelectric elements, such as thermoelectric (TE) modules, can be used as cooling devices. Small-sized TE modules, characterized by: lack of moving parts, no required refrigerants application as well as variable possible installation and operation positions, allow, in several specified cases, achieving the advantage in cooling process over the conventional refrigeration devices. This paper presents the results of the preliminary numerical determination of energetic efficiency of thermoelectric cooling system, applied for cooling a small-scale experimental room. The heat exchangers used in the cooling system consisted of heat sinks and radiators installed on the both sides of the TE module. The numerical assessment included in this paper, based on a 3D model reflecting the experimental room and thermoelectric cooling system, allowed determining the relation between TE module power supply characteristics and cooling effects, as well as time-related temperature distribution inside the modeled experimental room. The commercial modeling software FLUENT, ANSYS 12.0 by ANSYS Inc. was applied in numerical calculations. The results of the performed laboratory studies were used as a basis for model development, required input data, initial and boundary conditions. The results of laboratory tests showed the influence of amperage of power supply on the efficiency of cooling characteristics, as well as distribution of air temperature inside the experimental room. Calibration and validation of the developed model was also based on the results of laboratory experiment. The obtained results of numerical calculations showed the influence of amperage of power supply on efficiency of cooling characteristics as well as distribution of air temperature inside the experimental room.

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Wykorzystanie ogniw Peltiera w układach chłodzących pojazdów autobusowych

Pniewski R., Kowalik R., Sadowski E.

Autobusy : technika, eksploatacja, systemy transportowe

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2016

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R. 17, nr 6

1083--1086

PL

W artykule omówiono zjawisko Peltiera z naciskiem na analizę modelu matematycznego opisującego zjawiska zachodzące na elemencie półprzewodnikowym odpowiedzialnym za regulacje temperatury. Zaprezentowany model matematyczny wykorzystany do opracowania programów symulacyjnych, z których uzyskane wyniki zaprezentowano w końcowej części referatu. Przedstawiono również opis możliwości wykorzystania ogniw Peltiera jako elementów wspomagających układ klimatyzacyjny w autobusach.

EN

Article shows the Peltier effect with emphasis on the analysis of the mathematical model describing the phenomena on semiconductor element responsible for regulating the temperature. Presented mathematical model used to develop simulation programs, of which the results were presented in the final part of the paper. Also contains a description of the possibilities of using a Peltier element supporting the air conditioning system in the buses.

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Systemy chłodzenia detektorów podczerwieni

Więcek B.

Elektronika : prace naukowe

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2004

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nr 9

79-106

PL

W pracy przedstawiono podstawy fizyczne i analizę działania termoelektrycznych elementów stosowanych do chłodzenia detektorów podczerwieni. Wyniki zamieszczonych obliczeń pokazująpotencjalne możliwości zastosowań tego typu struktur w sprzęcie termowizyjnym, jak i ograniczenia wynikające dużego poboru energii i niewielkiej różnicy temperatury między "zimnym" i "gorącym" punktem elementu. Ponadto omówiono chłodziarki działające z wykorzystaniem termodynamicznych przemian gazowych: Joula--Thomsona i pracujące w cyklu Stirlinga.

EN

This paper presents three main cooling systems for infrared detectors. At first thermoelectric devices are discussed. They allow cooling down the detector with quite poor efficiency and not to the very low temperature. They do not generate any vibrations and that is why they are suitable to thermal detectors. Photon detectors need to be cooled down even to 77K or better. The only way to have such deep cooling is to use thermodynamic engines working based on thermodynamic reversible cycles, such as Stirling one. With the high efficiency one can easily obtain cryogenic temperature for the detector. The noise and vibration generation are the main disadvantages of use of this device as well as electromagnetic influence of the compression engine on the high impedance detectors. Joule-Thomson effect during gas expansion is 3rd cooling system discussed in the paper. It is highly effective process, used for gas liquefying too, but the gas is being removed during cooling into the atmosphere, so the need of continuous availability of compressed gas makes this system very difficult for remote applications. In the paper, simple calculations are presented to illustrate the advantages and disadvantages of the different cooling systems.