THEORETICAL PREREQUISITES OF ELECTRIC WATER HEATING IN SOLAR COLLECTOR-ACCUMULATOR

In the article herein, we consider the theoretical prerequisites of the solar collector accumulatorenergy saving sources One of the solar collector-accumulator main peculiarities is in the fact that it works under coldtemperatures or in the dull days due to design features. There was proposed a new method of the flat solar collectorusing modern materials, thanks to which the collector’s performance upgrades and its cost reduces. Collector’sefficiency is reached owing to the proposed construction, which consists of transparent thermally insulated body,semitransparent color, absorber’s capacity, thermoelectrical heater. Thermoelectrical heater is a main feature, whichis used for water heating. Proposed new method of thermoelectric heating is theoretically substantiated and consistsin adjusting the thermoelectric power to changing the stress in appropriate range, as well, to changing the resistanceof thermoelectric heating elements through switching from sequential circuit to parallel one. The new electric schemehas been offered as a controlled thermoelectric heater inside the collector. Solar collector-accumulator researches andworkings in the mode of electric heating show, that the computation of water heater average value from 5 до 9%confirms the suggestion about the theoretical outcomes of the solar collector accumulator work. There have beenselected thermoelectric capacities values as 1,5, 3,0 and 4,5 kW, liquid optimal temperature (60 oС) has been reachedfor 3 hours at capacities 3,0 and 4,5 kW, it is a good result for a cold season or dull days. Economic analysis of usingthe proposed thermoelectric capacity inside the solar collector is not considered in the work herein and remained forfurther studying.