L.I. Anatychuk, V.Ya. Mikhailovsky. Progress in the research and
development of organic fueled thermogenerators. Journal of Thermoelectricity.
2004, No. 4. - p.5-36.
Peculiarities and tendencies for progress in the research, development and
use of organic fueled thermogenerators are discussed. State of the art and
prospects for improving their efficiency and relevant applications are
analyzed.
L.I.Anatychuk, R.V.Kuz’, Î.J. Luste. Zone-inhomogeneous thermoelement in
electric energy generation mode. Journal of Thermoelectricity. 2004, No.
4. - p.37-48.
Computer model of a zone-inhomogeneous thermoelement has been developed.
Temperature, current and potential distribution therein has been studied.
Thermoelement geometry in generation mode has been optimized.
Ya.S.Budjak. Second law of nonequilibrium thermodynamics and Seebeck
effect in conductive crystals. Journal of Thermoelectricity. 2004, No. 4.
- p.49-52.
Seebeck effect has a wide application in various instruments of solid state
electronics, including thermoelectric power generators. The paper shows that
thermoelectric figure of merit of such generators is n=ZT , where T is crystal
temperature, and Z is figure of merit of thermoelectric materials. This
relationship follows from the second law of non-equilibrium thermodynamics.
P.I.Baransky,
G.P.Gaidar. Microanalysis of the internal structure of quantum dots related to
estimates of Z for thermoelectric converters based on three-dimensional
superlattices. Journal of Thermoelectricity. 2004, No. 4. -
p.53-58.
Based on the literature data, the structure of nanoclusters and quantum dots
related to estimates of Z=alpha2sigma/kappa was analyzed. Àttention
was focused on the fact that when performing theoretical calculations of
properties of 1D-, 2D- or 3D-superlattices and comparing the results to the
experimental data one should take into account that structural elements of the
investigated superlattices (i.e. superthin layers, quantum wires or quantum
dots) neither in their structure nor in their physical and chemical properties
can be identified to the properties or parameters of the bulk substance (or
chemical element) they are created of. Moreover, with regard to the peculiarities
of manufacturing technique, one should not forget that neither in their size
nor in their shape nor even in their composition the nanoobjects can be
identical. The foregoing can affect considerably the conclusions following from
comparison of theoretical calculations to the experimental data.
À.F.Semizorov. Effect of microdefects on thermoEMF anisotropy of CdSb
crystals of stoichiometric composition. Journal of Thermoelectricity.
2004, No. 4. - p.59-62.
ThermoEMF anisotropy (DeltaAlpha) at 300 Ê was studied on CdSb samples,
subject to thermal treatment in the range of temperatures 350-475 Ê. Formation
of Frenkel defects in CdSb was shown to be the main reason for DeltaAlpha
reduction.
O.M. Krylyuk, E.M. Kosenkov, H.I. Rarenko, V.P. Shafranyuk. INFLUENCE OF CHEMICAL AND MECHANICAL
TREATMENT ON THE SURFACE PARAMETERS OF ÑdSb CRYSTALS FOR THERMOELECTRIC DEVICES.
Journal of Thermoelectricity. 2004, No. 4. - p.63-70.
The paper presents the results of investigation on the influence of various
methods for surface treatment of CdSb monocrystals of (100), (010), (001)
orientation as materials for thermoelectric devices. The Auger electron
spectroscopy methods were used to determine the content of intrinsic and
foreign elements in the depth of damaged layer of the samples obtained. Measurement
of half-width of ?-scanning curves and peak intensity of the Bragg reflection
of X-rays was used to determine structural perfection of damaged surface area
and deep within CdSb crystals, as well as topography and dislocation density in
the range of 10 < Nd < 102 ñm-2.
I.V. Gutsul, A.A. Ascheulov. Volt-Watt sensitivity of anisotporic
opticothermoelement in the case of thermostating of the lateral faces. Journal
of Thermoelectricity. 2004, No. 4. - p.71-76.
Results of the investigation of volt-watt sensitivity of anisotropic
optiicothermoelement (AOT) at thermostating of its lateral faces depending on
the degree of the optical transparence are presented. Utilization of such AOT
in throughput power mode allows to record radiant fluxes of high density.
V.I. Bodnaruk. Peculiarities of using thermoelectric converters to
determine the energy of single current pulses. Journal of Thermoelectricity.
2004, No. 4. - p.77-81.
Peculiarities of methods for measuring the energy of single current pulses
are considered, the advantage of method based on measuring the value of output
thermoEMF E(t) is shown.
S.O.Filin. Rational organization of heat exchange in the chamber of
thermoelectric cooler. Journal of Thermoelectricity. 2004, No. 4. -
p.82-89.
Comparitive analysis of constructions and spatial arrangement of
thermoelectric cooling units is made from the standpoint of efficiency of heat
exchange between the cold sink and air in the chamber of cooler. The results of
experimental study of the influence of fan operating mode in the chamber on
such temperature characteristics of cooler as minimum temperature in the
chamber, temperature non-uniformity along chamber height, air-sink temperature
difference are presented.