Cooling water type stepless control condensed heat recovery system

Abstract

The invention discloses a cooling water type stepless control condensed heat recovery system. The heat recovery system comprises a condenser water cold heat exchanger(1), a reheat heat exchanger(2), a proportional three-way valve (3), a temperature inductor(4), and a PID(piping and instruments diagram) controller (5), wherein the condenser water cold heat exchanger(1) is connected with a feed pipe (6) and a return pipe (7) and used for recovering the heat generated by an air condition condenser; the reheat heat exchanger(2) is connected in parallel with the pipeline of the return pipe and used for heating indoor air; the inlet of the proportional three-way valve (3) is connected with the backwater outlet of the condenser water cold heat exchanger, one outlet of the proportional three-way valve (3) is connected with the inlet of the reheat heat exchanger, and the other outlet of the proportional three-way valve (3) is connected with the return pipe; the temperature inductor (4) is usedfor sensing an indoor temperature signal; the PID controller (5) is connected with the proportional three-way valve and the temperature inductor, and used for receiving the temperature signal of the temperature inductor; and the flow opening of the proportional three-way valve is adjusted and controlled according to the temperature signal so as to adjust the reheat flowing to the reheat heat exchanger. The heat recovery system provided by the invention has the advantages of no influence on refrigerating system and self stableness of the refrigerating system, and simultaneously reduces the control complexity.

Description

technical field [0001] The invention relates to an air conditioning device, in particular to a cooling water type stepless adjustment condensation heat recovery system used in a constant temperature place. Background technique [0002] At present, people are paying more and more attention to low-carbon and environmental protection. How to use the least resources to meet their work and life needs is the general trend. This is especially true for air conditioners as a device that satisfies the production process and makes life comfortable. [0003] In some places with constant temperature and humidity requirements, it is necessary to use constant temperature and humidity air conditioning units. The constant temperature and humidity air conditioner unit operates according to the set temperature and humidity. When the temperature detected by the temperature sensor is higher than the set value, the compressor runs to cool; after a period of time, the detected temperature is lowe...

AI Technical Summary

Problems solved by technology

However, the temperature rise of reheating by heat recovery through condensation heat is very large, and the temperature accuracy cannot be guaranteed.

The units of some manufacturers also have stepless adjustment of the condensation heat of the refrigeration system, but the flow ratio distribution of the refrigerant is very difficult to control

Moreover, for a constant condenser, even if the flow rate of the refrigerant can be adjusted, the condensing pressure fluctuates greatly, and the safety of the refrigeration system cannot be guaranteed

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