Abstract
The optimization of permeable thermoelement for thermoelectric air conditioner unit based is presented. In the thermoelectric air conditioner unit the air flow is cooled due to a combined action of thermoelectric effects and the Joule-Thomson effect. Methods for calculation of temperature distribution, determination of power conversion energy characteristics and thermoelement design in maximum COP mode are discussed. Results of computer studies for the case of thermoelement legs based on Bi2Te3 material have shown the possibility of COP increase by a factor of 1.6-1.7 as compared to conventional thermoelectric systems. 
Highlights
Thermoelectric cooling systems are environmentally friendly, noise-free, noteworthy for simple design, high reliability, random attitude in space, possibility of stepless and precise control of cooling capacity and temperature, which shows their good prospects for creation of air conditioning thermal modes
Creation of thermoelectric materials with maximum figure of merit, use of cascade structures and improvement of heat exchange system are considered to be the main lines of coefficient of performance (COP) increase in thermoelectricity
Physical model of cooling thermoelement using a combined action of thermoelectric effects and the JouleThomson effect for cooling gas flows is represented
Summary
Thermoelectric cooling systems are environmentally friendly (freon-free), noise-free, noteworthy for simple design, high reliability, random attitude in space, possibility of stepless and precise control of cooling capacity and temperature, which shows their good prospects for creation of air conditioning thermal modes. Despite such attractive characteristics, thermoelectric cooling systems have not found wide application in solving the problems of air thermal stabilization, which is due to their lower coefficient of performance values as compared to compressor devices. Possibilities of wide application of thermoelectric cooling are primarily dependent on their energy efficiency, i.e. coefficient of performance (COP). Creation of thermoelectric materials with maximum figure of merit, use of cascade structures and improvement of heat exchange system are considered to be the main lines of COP increase in thermoelectricity
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