Energy and Power Engineering | Article | Published 2019

Study of the parameters of a combined photo-thermoelectric installation in natural conditions

Authors:
Collection: Geliotekhnika,
Keywords: Combined PV-TEG installation, solar cell, thermoelectric battery, reflector, thermal im- ager, temperature of the photo-electric module, cooling, photo-electric battery, thermo-EMF, overheating.

Abstract

The parameters of the combined photo-thermoelectric (PV-TEG) installation using mod- ern solar cells (SC) made of polycrystalline silicon and thermoelectric batteries (TB) based on bismuth telluride with improved thermal contacts were experimentally investigated. The processes of heating and cooling the photovoltaic part of the installation were studied. Analysis of the results of photographs of infrared radiation heating processes indicate that all surfaces are almost uniform in temperature. The white “spot” partially observable in the central parts of the PVB predicts a high temperature, i.e. about the process of "overheating". After cooling of the “cold” junction of the thermoelectric battery with water below room temperature, a significant change in the temperature gradient of the PVB and a partial restoration of the main parameters of the PVB were observed. The inhomogeneity of the temperature gradient over the sur- face of the PVB is apparently due to the uneven removal of heat from the front surface to the back of the battery. Based on the obtained experimental data, comparative graphs of the parameters of the combined PV-TEG installation with and without a reflector are constructed.

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