Heat energy exchange unit

Abstract

The invention discloses a heat energy exchange unit, which comprises a first heat exchanger, a second heat exchanger, wherein the shell side or pipe side of the first heat exchanger is connected with a cold and heat circulating water pipe of a production device; the shell side or pipe side of the second heat exchanger is connected with a cold and heat water pipe of a heat utilization device; the pipe sides or shell sides of the first and second heat exchangers are communicated through a compression pipe with a compressor and an expansion pipe with an expansion valve; and working medium is filled in the communicated pipe sides or shell sides. The heat energy exchange unit has the following advantages that: 1, the heat is fully utilized, the steam consumption is reduced, and a great deal of fuel cost is saved; 2, a cooling tower is eliminated, so water loss caused by sprayed water evaporation and drifting is reduced, the waste of water resource is avoided, and heat radiation pollution to the air is reduced; and 3, enclosed circulation is adopted, the water loss is reduced, and the saline matter is difficult to deposit. Meanwhile, oxygen, microorganisms and nutrient required by microorganisms are difficult to enter a circulating water system, so the water treatment cost is reduced and the service life of the heat exchange equipment is prolonged.

Description

1. Technical field [0001] The invention belongs to the technical field of energy recovery and utilization, and in particular relates to a heat exchange unit. 2. Background technology [0002] In production enterprises such as petroleum, chemical industry, power plants and steel mills, the circulating water system is usually used to cool down the production equipment, that is, the circulating cold water pipe is used to provide cooling water for the production equipment to cool down, and then the heated water is heated through the circulating hot water pipe. The cooling water is sent to the cooling tower for cooling, and finally pressurized by the water pump and then sent back to the production device. This method has the following disadvantages: 1. A large amount of heat energy is discharged into the air, which is wasted and pollutes the environment. 2. A large amount of water vapor is evaporated by the cooling tower, which not only causes waste of water resources, but also ...

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: 1. A large amount of heat energy is discharged into the air, which is wasted and pollutes the environment

2. A large amount of water vapor is evaporated by the cooling tower, which not only causes waste of water resources, but also produces a large amount of salt deposited in the circulating water system, which increases the cost of water treatment

3. Due to the use of cooling towers, the circulating water system is open, so a large amount of oxygen, microorganisms and nutrients required by microorganisms will enter the circulating water system, resulting in deterioration of water quality and increased water treatment costs

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