FIELD: hydroelectric power engineering. SUBSTANCE: hydroelectric unit depending for its operation of conversion of water stream energy and heat transferred from water-wheel generator into electricity has bulb with external casing as well as water-wheel generator and circulating air passage disposed in bulb. In addition hydroelectric unit is provided with thermoelectric generator whose cold junctions are arranged on external casing of bulb and hot junctions, in circulating air passage. EFFECT: enhanced efficiency due to using heat released by water- wheel generator. 1 dwg
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