Water vapor preparer driven by air source heat pump

Abstract

A water vapor preparer driven by an air source heat pump comprises a system integrated circulating pump, the air source heat pump, a throttling valve, a nozzle, a flash tank and a nozzle injection and pressure expanding device; by the air source heat pump, heating circulating and water replenishing are implemented so as to provide flash heat; by circular heating, throttling, spraying and flash, secondary steam is generated continuously; the secondary steam is subjected to thermocompression by excess pressure of a steam pipe network, and compression electric charge and investment of a water vapor compressor are saved; the investment payback period of the water vapor preparer can be 50% shorter than the investment payback period of a water source heat pump with effect of heating flash and the investment payback period of the water vapor compressor with effect of compression; and a steam multiplication function of preparing (n+1) parts of medium-pressure water vapor by using 1 part of high-pressure water vapor is fulfilled.

Description

(1) Technical field [0001] The invention relates to an air source heat pump driven water vapor conditioner. (2) Background technology [0002] Considering the transmission loss and the highest steam pressure requirement, the steam pipe network usually maintains a pressure above 10bar. However, the steam pressure demand of many users is only 3-5 bar, so a temperature reducing and pressure reducing valve is installed at the port of the heat equipment to realize the heat pressure demand, thus wasting the residual pressure of the steam pipe network. [0003] The process flow of the existing water source heat pump heating flash and water vapor compressor compression to produce water vapor is as follows: the liquid heat carrier flows through the liquid heat carrier side of the evaporator, so that the low-pressure two-phase heat pump working fluid flowing into the evaporator side absorbs The heat is evaporated into a low-pressure superheated gaseous heat pump working fluid, and th...

AI Technical Summary

Problems solved by technology

[0006] (2) When the absolute pressure difference exceeds 3bar, the isentropic efficiency of the water vapor compressor is greatly reduced, so the power consumption is huge;

[0007] (3) If the absolute pressure difference of the water vapor compressor is reduced, the absolute pressure difference of the water source heat pump needs to be increased, resulting in an increase in the power consumption of the water source heat pump;

[0008] (4) Due to the large system investment and power consumption, the project investment payback period exceeds 7 years, so it is difficult to popularize and apply

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