SOLAR ELECTRIC HEAT WATER HEATER Russian patent published in 2020 - IPC F24S10/40 H02S10/30 

FIELD: power engineering.

SUBSTANCE: invention relates to solar power engineering, in particular to devices intended for absorption of solar energy with subsequent conversion into heat energy, in particular, to solar water heaters with forced circulation. Main element of the solar water heater is a vacuum flask composed of two tubes made of heat-resistant glass, placed one into another and hermetically sealed to each other. Air is evacuated from inner space of glass bulb and vacuum is created. On external surface of inner tube of glass bulb there is a layer of photoconverters intended for conversion of solar energy into direct current and simultaneously heating material of heat carrier, in case of water heater with direct heating, or heating of heat pipe, in case of water heater with indirect heating of heat carrier. Direct current is used through leads and by means of device for conversion of direct current into alternating current with change of voltage value, for example inverter, is used for drive of circulating pump or for other purposes. In the presence of solar radiation, the circulation pump operates excluding the system stagnation. To increase efficiency of using solar radiation from shadow side of vacuum bulb, mirror reflector is installed. Simultaneously with heat carrier heating electric power generated by photoconverter ensures operation of circulating pump irrespective of availability of electric power in centralized power supply system.

EFFECT: invention can be used in systems of water heating and hot water supply.

1 cl, 2 dwg