Fan va innovatsiyalar vazirligi guliston davlat universiteti

Keywords:
Interdisciplinary approach , discussion , presentation , 
competence, science.
SEASONAL HEATING CAPACITY AND THERMAL EFFICIENCY 
OF FLAT SOLAR WATER HEATING COLLECTORS MADE OF 
TRANSLUCENT PLASTICS WITH BOTTOM ABSORPTION OF 
RADIATION
Sh.К. Niyazov, R.U. Elmuratov
, 
Gulistan state University,
F.SH. Kasimov,
 Physical-technical institute
Abstract
: The article presents a method for processing the results of 
experimental studies of the daily amount of useful heat accumulated in a capacious 
receiver of flat solar water heating collectors with bottom absorption of solar 
radiation and insulated with flat bases. The calculated expression and the results 
of comparative experimental studies in full-scale conditions of the temperature 
regime and thermal efficiency of the above solar collectors located horizontally in 

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the meridional direction along the cardinal directions, i.e. the long axis of the flat 
base of the collectors is directed from east to west.
As is known, the methods of thermal testing of solar collectors with flow-
through radiation receivers, due to their low inertia compared to collectors with 
capacious receivers, are not acceptable for their testing. 
Due to the fact that it is useful in a solar collector with capacious receivers-
absorbed and converted into low potential heat from solar energy radiation 
accumulates during daylight hours. To process the measurement results of the main 
experimental data, we have improved and applied an integral method based on the 
use of average daily (or averaged over a certain period of daylight) values of the 
measured parameters and the corresponding thermal characteristics.
Keywords:
seasonal heating capacity, thermal efficiency, capacitive solar 
radiation absorber, bottom absorption beam