The researches in the field on development of the combined photo-thermoelectric (PVTEG) installations providing decrease in temperature by means of absorber designs on the basis of various materials are analysed, and also possibilities of application of new materials and increase of efficiency, power in the general combined system based on a photo-thermoelectric battery with increase of the concentrated stream of solar radiation are considered.
The dependence of the angle of inclination of mirror reflector walls (β) on the concentration factor (k) of solar radiation is investigated experimentally. Research has been carried out in situ to measure the operating parameters of the combined photovoltaic unit using a mirror reflector and infra-red images of the photovoltaic unit's receiving surface have been taken.
The frontal surface temperature and infra-red images of the photovoltaic part of the FTEH unit were recorded using a FLIR thermal imaging camera - E63900. The results of heating and cooling of the photovoltaic part of the PTEG unit using a mirror reflector and nickel reflectors were analyzed.
The maximum and minimum temperatures on the working surface of the photovoltaic part of the installation with the use of reflectors (nickel coating and mirror) and without it have been revealed. The maximum temperatures coincide with those surfaces of the photovoltaic battery (PV) that have no thermal contact with the thermoelectric batteries (TEB), while the minimum temperatures indicate where the heat transfer from the PV operating surface to the thermoelectric part of the installation is effective. In the central parts of the photovoltaic part of the installation a partial appearance of white "spots" is observed. This predicts high temperature and the beginning of the process of "overheating" on the frontal surface of the installation which reduces the basic parameters and characteristics of the PEB. Comparative graphs illustrating the electrical and thermal parameters of the FTEG installation in full-scale conditions under increased concentrated solar radiation flux have been obtained.
| № | Author name | position | Name of organisation |
|---|---|---|---|
| 1 | Yuldoshev I.A. | O'qituvchi | TDTU |
| 2 | Shoguchqarov S.K. | O'qituvchi | TDTU |
| 3 | Jamolov T.R. | O'qituvchi | TDTU |
| 4 | Rustamova S.S. | O'qituvchi | TDTU |
| 5 | Aliyeva S.A. | O'qituvchi | TDTU |
| 6 | Turdiyev T.O. | O'qituvchi | Karshi State University Kuchabog st., |
| № | Name of reference |
|---|---|
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