Double-working-medium combined cycle heat pump device

Abstract

The invention provides a double-working-medium combined cycle heat pump device, and belongs to the technical field of refrigeration and heat pumps. The compressor is divided into two paths after being communicated with the heat supply device through a circulating working medium channel, the first path is communicated with the heat regenerator through the expansion machine, and the second path is communicated with the second compressor through the second heat supply device; the second compressor communicates with the heat regenerator through a circulating working medium channel, then the heat regenerator communicates with the evaporator through a condensate pipeline via a spray pipe, the evaporator communicates with the heat regenerator through a circulating working medium channel via the dual-energy compressor, and the heat regenerator communicates with the compressor through a circulating working medium channel; the low-temperature compressor communicates with the low-temperature evaporator through a circulating working medium channel via the evaporator and the low-temperature throttling valve, and the low-temperature evaporator communicates with the low-temperature compressor through a circulating working medium channel. The heat supply device and the second heat supply device are further communicated with the outside through heated medium channels respectively, the low-temperature evaporator is further communicated with the outside through a low-temperature heat medium channel, the expansion machine is connected with the compressor and transmits power, and the double-working-medium combined cycle heat pump device is formed.

Description

Technical field: [0001] The invention belongs to the technical field of refrigeration and heat pumps. Background technique: [0002] Cold demand, heat demand, and power demand are common in human life and production; among them, the conversion of mechanical energy into heat energy is an important way to achieve refrigeration and efficient heating. The vapor compression heat pump device based on a single reverse Rankine cycle, when the heat release mainly depends on the condensation process, the temperature difference loss between the working fluid and the heated medium is large, the loss of the condensate is large during the depressurization process, or the cost of utilization is high; The load acquisition is greatly affected by the depressurization of the condensate, and the performance index needs to be improved. The gas compression heat pump device based on a single reverse Brayton cycle requires a low compression ratio, which limits the improvement of heating parameters...

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