Contents of Journal of Thermoelectricity, No.2, 2000
O.N.Manyk.
Comprehensive Approach to Calculating Parameters of Thermoelectric Materials.
XII. Methods of vibration theory. Characteristic property of frequencies.
A
method for calculating vibration frequencies of atoms of individual chemical
bonds in complicated crystals is developed. A procedure for finding vibration
form by means of molecular models is given.
P.I.Baransky,
Ye.F.Venger, A.V.Gaidar. Physics of semiconductors and the search for new
thermoelectrically efficient semiconductor materials.
The
role of physics of semiconductors in solving the problems related to the search
for new thermoelectrically efficient materials and their technical mastering is
considered. These materials are intended for creating various-purpose
thermoelectric converters and sensor technique elements on their basis.
P.P.Bodiul1,
D.V.Gitsu1, V.A.Dolma1, E.P.Condrea1, A.A.Nikolaeva, Gh.Para1. Dimensional
effects in thin cylindrical doped bismuth single crystals.
The
results of investigation of bismuth filamentary single crystals doped by
donor (Te) and acceptor (Sn, Pb) type impurities are presented. The thin
wires in a glass coating with the diameter 0.l<d<20 mm were obtained
under various regimes. The resistance in a longitudinal magnetic field up to
140kOe and tensile stress up to 3% in the temperature range (4.2-300)K were
studied. It is shown that the behaviour of the impurity atoms in thin
bismuth cylindrical crystals is determined by the individual physical and
chemical parameters of the impurities and their concentration but also to a
great extent by the diameter.
I.V.Gutsul,
A.A.Ashcheulov. Investigation of Transverse Thermopower, Efficiency and
Volt-Watt Sensitivity of Anisotropic Optical Thermoelement with a Triangular
Cross-Section.
Calculated
of temperature distribution have made, and transverse thermopower, efficiency
and volt-watt sensitivity of anisotropic optical thermoelement with a triangular
cross-section, have been investigated.
N.N.Proshkin.
Methods of improving reliability and long-range stability
of cooling thermoelectric modules.
The
basic factors affecting thermoelectric modules reliability have been determined.
The methods of improving thermoelectric modules reliability have been considered.
The technological methods as the most efficient means for improving
thermoelectric modules reliability, as well as the problems of evaluating
thermoelectric modules reliability under forced conditions have been studied.
J.G.Vian,
M.Dominguez, D.Astrain, J.Esarte, J.J.Aguas. Design and optimisation of a
thermoelectric dehumidifier.
A
low power dehumidifier device, based on the thermoelectric cooling technology,
has been developed. For its design and optimisation a mathematical tool (AERO)
based on the electric analogy run by computer has been developed. This tool is
capable of solving throughout the time the physical phenomenon such as heat
transfer, thermoelectric effects and phase change which occur into the device. After
several simulations carried out with this tool a second dehumidifier prototype
was manufactured. A large number of experimental tests were carried out on it in
order to optimise the power input of both the Peltier pellets and the fans. It
has been checked the validity of the mathematical model (AERO) for the design of
thermoelectric cooling devices even when phase-change exists.