Horizontal type double phase change heat exchanger

Abstract

The invention discloses a horizontal type double phase change heat exchanger. The horizontal type double phase change heat exchanger comprises a horizontal type shell, a phase change drum is horizontally arranged inside the horizontal type shell, and a plurality of heat exchanging units is arranged inside the phase change drum; each heat exchanging unit comprises a vertical barrel; a plurality of communicating pipes are horizontally arranged inside the vertical barrel, at least one communicating pipe at the top of the vertical barrel is a heat-insulated pipe, and at least one communicating pipe at the bottom of the vertical barrel is a heat-insulated pipe; other communicating pipes are double phase change heat exchanging pipes; the bottom portion at one end of the phase change drum is connected with a low temperature liquid inlet pipe, the top portion at the same end of the phase change drum, which is provided with the low temperature liquid inlet pipe, is connected with a low temperature steam outlet pipe, a high temperature steam inlet is arranged at the other end of the side wall of the horizontal type shell, and the bottom wall at the same end of the horizontal type shell is provided with a high temperature liquid outlet; the top wall and the bottom wall of the phase change drum at a position of a condensation cavity are respectively provided with an upper opening and a lower opening. The horizontal type double phase change heat exchanger has the advantages that structure is simple, energy consumption is saved, installation is convenient, the heat flux density of a heat exchanging surface is greatly improved compared with the prior art, the size of the heat exchanger is greatly reduced, and media can automatically pass through by means of a phase change effect instead of extra conveying power.

Description

technical field [0001] The invention relates to the technical field of heat exchangers. Background technique [0002] When a conventional heat exchanger is working, the medium on both sides of the heat exchange surface generally does not undergo a phase change, such as liquid / liquid, gas / gas, gas / liquid heat exchange. Or the medium on one side of the heat exchange surface undergoes a phase change, such as steam / liquid, steam / gas heaters. The non-phase change heater can only transfer the sensible heat of the material. The steam end of the one-sided phase change heater undergoes a condensation phase change and releases latent heat, while the liquid or gas material on the other side has no phase change, but the temperature is raised. Usually, the sensible heat of materials is much smaller than the latent heat, so for the same heat exchange capacity, traditional heat exchangers usually require a large equipment size and a large amount of energy consumption for liquid or gas tra...

AI Technical Summary

Problems solved by technology

[0006] 1. The liquid level of each unit needs to be controlled separately, which is difficult to realize and has low operational reliability;

[0007] 2. The design of heat-insulated tubes cannot be used, so the pipelines are still relatively complicated;

[0008] 3. The overall height of the vertical design is high, which is not conducive to the overall layout of the unit;

[0009] 4. Manufacturing and processing are difficult, material consumption is high, and cost is high

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