On the discovery of thermoelectricity by Volta
Journal of Thermoelectricity. 2004, No. 2. - p.
5-10. The results of historical research proving the discovery of thermoelectricity by Volta are given. Physical conditions for observation by Volta of the origination of thermoelectric effect are described. The observations by Volta are confirmed by reproduction of his experiments.
Some aspects of hot carrier thermoemf in silicon barrier-less diode for microwave detection
Journal of Thermoelectricity. 2004, No. 2. - p.51-56. We employ hot carrier thermo-electromotive force induced in asymmetrically necked silicon diodes (bigradient emf) to detect microwave radiation of 10 GHz frequency. At room temperature, both types of planar structures, n-Si-on–p-Si and n-Si-on–n-Si, reveal applicable features, still the latter seems to be more suitable for high power microwave nanosecond pulse sensing.
Investigation of stability of thermoelectric converter parameters Journal of
Thermoelectricity. 2004, No. 2. - p.57-60. A change in output thermoEMF of converters (of ТP4303 type) during 3000 hours of continuous operation was investigated. It was shown that to provide high temporal stability of parameters of semiconductor gas-filled converters, the temperature conditions of heater and thermocouple should be selected close to optimal.
Complex method to control the quality of construction and performance reliability of thermoelectric modules in optoelectronic devices Journal of
Thermoelectricity. 2004, No. 2. - p.61-69. International standards require high reliability from thermoelectric (TE) cooling modules applied in optoelectronic devices. A standard criterion is the measurement and specification of the module electric resistance (R). At the manufacturing stage TE Figure-of-Merit (Z) is also controlled by the Harman method. Our earlier paper [1] suggested a complex quality control method by measuring TE module R, Z and time constant (t). As a follow-up of this approach the current paper shows the advantages of the complex (R, Z, t)-measurement for estimating the quality of assembli
Long life cable thermoelectric temperature converters. reliability problems. Journal of
Thermoelectricity. 2004, No. 2. - p.70-74. Cable thermoelectric converters have been studied. The problems of their metrological and mechanical reliability have been discussed. The possibilities of production-technology-operation factors for improvement of the converters’ reliability characteristics have been outlined.
Feasibility study of two-stage thermoelectric cooling modules
Journal of
Thermoelectricity. 2004, No. 2. - p.45-50. Design and optimization variants have been considered with a view to simultaneously achieve high values of maximum temperature difference (delta Òmax) and maximum cooling capacity (Qmax) of widely used two-stage modules with size of ceramic plate 40x40 mm2..
The study dealt with two design modifications: modules with identical number of junctions in both stages and modules with different number of junctions in stages.
Parameters were calculated for each modification with regard for really achievable variants of stage interconnection.
The resulting design and practical data allow to realize modules wit
