Three-level heated waste water waste heat recovery device of heat-pump water heater
A waste heat recovery device, heat pump water heater technology, applied in heat recovery systems, fluid heaters, energy-saving heating/cooling, etc., can solve the problems of small temperature difference of waste water and low waste heat recovery rate
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[0009] Such as figure 1 As shown, a three-stage waste heat recovery device for heat pump water heaters includes a main water collection tank 1 for collecting hot waste water. Specifically, the main water collection tank 1 is installed at the bottom of the bathroom. A heat exchanger 2, a first evaporator 3, and a second evaporator 4 are sequentially installed in the main water collecting tank 1 from top to bottom, wherein the second evaporator 4 is installed in a main water collecting tank 1 and in In the auxiliary water collection tank 5 below the first evaporator 3, the heat exchanger 2 is connected in series to the water inlet pipe of the heat pump water heater, the first evaporator 3 and the second evaporator 4 are connected in series, and the output end of the first evaporator 3 It is connected to the inlet of the compressor of the heat pump water heater, and the input end of the second evaporator 4 is connected to the outlet of the throttling valve of the heat pump water hea
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