Cooling and Mechanical Performance Analysis of a Trapezoidal Thermoelectric Cooler with Variable Cross-Section

Lu, Tianbo; Li, Yuqiang; Zhang, Jianxin; Ning, Pingfan; Niu, Pingjuan

doi:10.3390/en13226070

Cited by 14 publications

(6 citation statements)

References 45 publications

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“…A considerable number of series-connected thermoelements in the cooler allowed considering the failure rate as a constant value with sufficient accuracy [9]. This provided obtaining of analytical connection of reliability indexes with structural [10,11], mechanical [12,13], thermal [14], technological and power [15] indexes. The result of this research was development of mathematical model of thermoelectric cooler [16], which quantitatively connects failure rate with design and energy indices.…”

Section: Literature Reviewmentioning

confidence: 99%

Reliability control of a thermoelectric cooler with changes in ambient temperature

Zaykov¹,

Mescheryakov²,

Zhuravlov³

2023

HAIT

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The paper presents the development of method of thermoelectric system reliability indexes control for providing thermal modesof radio electronic equipment, based on thermoelectric coolers medium temperature variation. A mathematical model for investigating influence of the environment temperature variation on the reliability performance of a single-cascade thermoelectric cooler at a given temperature level of cooling, thermal load, geometry of thermoelement branches for different characteristiccurrent operating modes is considered. The results of calculations of the basic parameters, reliability indices, dynamic characteristicsand the analysis of dependences are given for revealing the peculiarities of control processes. It is shown that decreasing the medium temperature at a given chiller design decreases the operating current, increases the cold-productivity, and decreases the time of reaching a steady-state operating mode for various characteristic current operating modes. The time to steady-state operation decreases from the minimum failure rate to the maximum cooling capacity at a fixed medium temperature. The minimum steady-state operation time is ensured in maximum cooling capacity mode. Reduction of such significant for control indices as the amountof consumed energy for different characteristic current operation modes, required heat dissipation capacity of the radiator, time of reaching the steady-state mode is noted. Analysis of research results has shown that it is possible to control indicators of reliability of a single-stage cooler of a given design by changing the medium temperature by changing the value of operating current. A change in the medium temperature of the thermoelectric cooler due to an external supporting device makes it possible to vary the reliability indices and to find a compromise between the reliability, dynamics and cooling capacity of the thermal mode support system.

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Section: Literature Reviewmentioning

confidence: 99%

Reliability control of a thermoelectric cooler with changes in ambient temperature

Zaykov¹,

Mescheryakov²,

Zhuravlov³

2023

HAIT

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“…It is shown in [9,10] that taking into account such design peculiarities of TECs as a large number of singletype thermoelements and their sequential connection allowed to obtain mathematical models of TECs with exponential distribution. Further studies are aimed at revealing the analytical relationship of reliability indicators with structural [11], mechanical parameters [12], and manufacturing technology [13], and energy effects [14]. The issues of TEC dynamics are considered in [15,16].…”

Section: Introductionmentioning

confidence: 99%

Method of reliability control of thermoelectric systems to ensure thermal regimes

Zaykov,

Mescheryakov,

Ustenko

2024

HAIT

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The paper presents the results of research of controllability of the thermoelectric system for ensuring thermal modes of electronic equipment, including a regulator, a cooler, and a component of excess heat removal to the environment. It is shown that for the use of methods of optimization of automatic control systems it is necessary to study the transfer and dynamic characteristics of the object - thermoelectric cooling device with one input and one output. The mathematical model of the thermoelectric cooler of the system of providing thermal modes of a given design is presented, which takes into account the influence of the conditions of interaction of the heat sink with the medium on the main significant parameters, reliability indicators, dynamic and energy characteristics of the single stage cooler. The model is created for the operating range of cooling, level of thermal load, geometry of thermocouple branches, different temperature of the medium, for the characteristic thermal regime of maximum cooling capacity. The results of calculations of the main significant parameters, reliability indicators, dynamic and energy characteristics of the cooler for different medium temperature in the operating temperature range and variation of conditions of heat exchange of the heat sink with the medium are given. It is shown that as the intensity of heat exchange of the heat sink with the medium increases, the temperature difference between the heat sink and the medium decreases. This makes it possible to significantly reduce the relative failure rate, increase the probability of failure-free operation of the thermoelectric cooler and control the reliability indicators of the device of a given design during operation.

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“…Thermoelectric cooler (TEC) is a device that uses the Peltier effect to convert electrical energy to heat and cooling energy [1]. In comparison to traditional cooling methods [2], the TEC has received a lot of interest in recent years because of its numerous benefits [3], including zero moving component, high reliability, high density of cooling, small and light in weight [4].…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement of Thermoelectric Air Cooler System by Using Variable-Pulse Current for Building Applications

Irshad

2021

Sustainability

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The thermoelectric air conditioning system (TE-AC) is a small, noiseless alternative to standard vapor compression refrigeration (VCR) systems. The cooling characteristics of a TE-AC system operating under two conditions, i.e., steady current and current pulses, are investigated in this study. This system consists of three thermoelectric modules, a heat sink, and an air circulation fan. The result shows that maximum temperature reduction in cooling side of TE-AC system was achieved at 6 A input current under steady state operation. The optimum performance of the TE-AC system under steady state operation depends upon the combined effect of the cooling load, Joule, Fourier, and Peltier heat. In TE-AC pulse operation, both current width and cooling load applied on the cold side of the thermoelectric module (TEMs) play an important role in achieving optimum cooling performance of the system. When normal input current operation (i.e., no current pulse) was compared to pulse-operated TE-AC system operation, it was found that pulse operation provides an additional average temperature reduction of 3–4 °C on the cold side of TEMs. Although on the hot side, it maintains a temperature in the range of 18 °C to 24 °C to reduce overshoot heat flux. The duration of operation is also important in determining pulse width and pulse amplitude. Minimum and overshoot peak temperature rises during each cycle for longer run operation. In the TE-AC system, the accumulated Joule heat during a current pulse frequently causes a temperature overshoot, which lasts much longer. As a result, the next current pulse was not released until the temperature of TE was restored to its initial value.

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Cooling and Mechanical Performance Analysis of a Trapezoidal Thermoelectric Cooler with Variable Cross-Section

Cited by 14 publications

References 45 publications

Reliability control of a thermoelectric cooler with changes in ambient temperature

Reliability control of a thermoelectric cooler with changes in ambient temperature

Method of reliability control of thermoelectric systems to ensure thermal regimes

Performance Improvement of Thermoelectric Air Cooler System by Using Variable-Pulse Current for Building Applications

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