Study of the fast transient behaviour of peltier junctions

Landecker, K.; Findlay, A.W.

doi:10.1016/0038-1101(61)90007-7

Cited by 48 publications

(14 citation statements)

References 8 publications

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“…Data where obtained for the following parameters [1,3,13]. Figure 2 shows the transient temperatures distribution (y 1 and y 2 ) at different axial locations where the n-type temperature y 1 values are lower than the p-type temperature y 2 values, as expected.…”

Section: Resultsmentioning

confidence: 86%

Transient behaviour of a thermoelectric device

Naji

Alata

Al‐Nimr

2003

Proceedings of the Institution of Mechanical Engineers, Part A:

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The objective of this work is to describe the dynamic thermal behaviour of thermoelectric generators and refrigerators. In practical situations, these devices work under transient operating conditions due to the time change in the imposed current, voltage, and hot or cold temperatures. Results for transient temperature distribution were obtained for different parameters. The coefficient of performance was obtained as a function of time for increasing current flow.

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Section: Resultsmentioning

confidence: 86%

Transient behaviour of a thermoelectric device

Naji

Alata

Al‐Nimr

2003

Proceedings of the Institution of Mechanical Engineers, Part A:

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“…(1) and (6) and T c with Eq. (5). A more precise calculation with again constant T av = (T h + T c )/2 can be now made and the process is repeated until the intensity converges.…”

Section: Steady-state Optimal Electric Intensitymentioning

confidence: 99%

“…At present there are many experimental, analytical and numerical works in the literature, in particular experimental investigations were presented in [3] and [4]. Analytically, the pulse shape influences on the cooling power were studied in [5] considering constant (with respect to temperature, CP) material properties. In addition, a temperature-entropy diagram based on thermodynamic considerations was developed in [6].…”

Section: Introductionmentioning

confidence: 99%

Elasto-thermoelectric non-linear, fully coupled, and dynamic finite element analysis of pulsed thermoelectrics

Pérez-Aparicio

Palma

Moreno-Navarro

2016

Applied Thermal Engineering

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This paper presents a numerical study on the influence of pulsed electric signals applied to the overcooling of thermoelectric devices. To this end, an experimental setup taken from the literature and a commercial cell are simulated using a complete, specially developed research finite element code. The electro-thermal coupling is extended to include the elastic field, demonstrating that the increment of cooling can produce mechanical failure. Numerical results are developed and the variation of overcooling versus pulse gain and versus duration is validated towards a new analytical expression and the experimental data. The issue of optimal intensity at steady-state is also newly developed. Thermal and mechanical trends are presented using constant and variable (with temperature) material properties for a single thermoelement. While some of the first trends are similar to those of published works, others are different or directly new, all closer to those of the experiments. The mechanical results have not been thoroughly studied until recently. The three-dimensional finite element mesh includes non-thermoelectric materials that are fundamental for the current study. Distribution of stresses during steady and transient states are shown inside the thermoelement, for five components and for the combined Tresca stress. Concentrations at corners of the lower side appear close to the cold face. Due to these concentrations, 27-node isoparametric, quadratic brick elements are used. It is shown that the mechanical field is an important factor in the design of pulsed thermoelectrics, since for practical applications the stress levels are close or slightly above the admissible limits.

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“…Then, Gray presented in the year 1960 [2] results of analytical consideration concerning small and large signals of thermoelectric generator. In 1961, Landecker [3] published results concerning fast transient behaviour of Peltier junctions during temperature measurements with thermocouples. Then, in the year 1971 Babin and Iordanishvili studied quasi-stationary thermoelectric generation and in the year 1983, Iordanishvili and Babin published a monograph [4] of non-stationary processes in thermoelectric and thermomagnetic energy conversion systems.…”

Section: Introductionmentioning

confidence: 99%

Non-Stationary Thermoelectric Generators

Stockholm¹

2016

Thermoelectrics for Power Generation - A Look at Trends in the Technology

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A review of theoretical publications on non-steady thermoelectrics is given. Review concerns different aspects of non-stationary and pulsed processes in thermoelectric materials and devices. Theoretical analysis of dynamic behaviour of thermoelectric devices, including analysis of small and large signals of thermoelectric generator, is given and details of concepts of quasi-equilibrium thermoelectricity are discussed as well. Special attention is paid to theoretical study of the non-routine regime of nonsteady thermoelectricity-fast-time dependence of thermoelectric properties when material or device is well out of equilibrium. Theoretical findings of fast-time dependence give reason to believe that it can increase the output electrical power of thermoelectric generator compared to stationary regime of operation. We also present experimental results obtained with first non-stationary thermoelectric generator prototype, which was designed for operation in fast-time dependence mode. Several research teams are presently making and testing devices to confirm that more electrical power can be obtained in AC mode (AC frequency about hundreds of kHz) than in DC mode. Descriptions with an analysis are given.

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Study of the fast transient behaviour of peltier junctions

Cited by 48 publications

References 8 publications

Transient behaviour of a thermoelectric device

Transient behaviour of a thermoelectric device

Elasto-thermoelectric non-linear, fully coupled, and dynamic finite element analysis of pulsed thermoelectrics

Non-Stationary Thermoelectric Generators

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