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Ammonium hydroxide heat exchanger

A heat exchanger and ammonia water technology, applied in indirect heat exchangers, lighting and heating equipment, etc., can solve problems such as affecting the thermal efficiency of ammonia water power cycle and complex structure of ammonia water power cycle, and achieve the effect of promoting mutual migration and increasing diffusion speed.

Pending Publication Date: 2019-09-20
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phase change process of ammonia water is a temperature-changing process, which reduces the irreversible loss of heat transfer in the process of evaporation and condensation, making the ammonia water power cycle closer to the ideal Lorentz cycle, and its thermal efficiency is more than 15% higher than that of a single working fluid power cycle. It is relatively complicated. It generates ammonia-rich steam by heating the ammonia-water mixture and then passing it through the gas-liquid separator. This method causes energy loss in the process of heating and gas-liquid separation, which also affects the thermal efficiency of the ammonia-water power cycle.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0027] Such as Figure 1-4 As shown, the present embodiment provides an ammonia water heat exchanger, including a housing 10 and a capillary core 20; the inside of the housing 10 is a cuboid or approximately cuboid cavity, and the bottom wall of the housing 10 is a heat exchange Wall surface 30, the capillary core 20 is horizontally arranged on the heat exchange wall surface 30 in the housing 10 and its lower end is attached to the upper end of the heat exchange wall surface 30, and the edge of the capillary core 20 is in contact with the heat exchange wall surface 30. The inner side walls of the housing 10 are connected to form a liquid storage chamber 11 for storing ammonia, and the left and right side walls of the housing 10 are respectively provided with an ammonia water inlet 12 and an ammonia water outlet 13 communicating with the liquid storage chamber 11, On the side where the lower end of the capillary wick 20 is bonded to the heat exchange wall 30, a channel for rich...

Embodiment 2

[0037] The ammonia water heat exchanger can be directly attached to the heat source of the heating equipment, or a heat source fluid channel 51 can be set on the ammonia water heat exchanger to superheat the ammonia-rich vapor, such as Figure 5-6As shown, different from Embodiment 1, the ammonia water heat exchanger also includes a lower shell 50, the lower shell 50 is hollow inside and has an upper end opening, and the upper end opening of the lower shell 50 is in contact with the heat exchanger. The lower end of the heat wall surface 30 is connected so that the inside of the lower casing 50 forms a heat source fluid passage 51, and the left and right ends of the lower casing 50 are respectively provided with a heat source fluid inlet 52 and a heat source fluid inlet 52 communicating with the heat source fluid passage 51. Heat source fluid outlet 53 . The heat source fluid flows directly in the heat source fluid channel 51 to superheat the ammonia-rich vapor. Wherein, the a...

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Abstract

The invention relates to an ammonium hydroxide heat exchanger which comprises a shell and a porous wick. The shell is hollow inside; the porous wick is horizontally arranged in the shell; the lower end of the porous wick fits to the upper end of the bottom wall of the shell; the edge of the porous wick and the inner side wall of the shell are connected to form a fluid reservoir; an ammonium hydroxide inlet and an ammonium hydroxide outlet communicating with the fluid reservoir are formed in the left side wall and the right side wall of the shell; an ammonia-rich steam channel is arranged at the lower end of the porous wick; an ammonia-rich steam outlet communicating with the ammonia-rich steam channel is formed in the side wall of the shell and is located under the ammonium hydroxide outlet; and the shell is arranged in a magnetic field along a front-and-back direction, so that an ammonium ion in the fluid reservoir is deflected toward the porous wick under the effect of the magnetic field. Under the effect of the magnetic field, a charged ion in an ammonium hydroxide working medium is deflected, so that the diffusion velocity is improved, the ammonium ion in the fluid reservoir is ensured to be deflected toward the porous wick, and the remained dilute ammonia solution in the fluid reservoir is discharged from the ammonium hydroxide outlet.

Description

technical field [0001] The invention relates to the technical field of heat exchangers, in particular to an ammonia water heat exchanger. Background technique [0002] Ammonia-water power cycle power generation technology uses ammonia-water mixture as a working medium, and is suitable for medium and low temperature power generation technology with a heat source of 85-350°C. It is currently the most interesting medium and low temperature waste heat power generation technology. The medium and low temperature waste heat resources generated in the field are also applicable to the fields of renewable energy such as geothermal and solar energy. The phase change process of ammonia water is a temperature-changing process, which reduces the irreversible loss of heat transfer in the process of evaporation and condensation, making the ammonia water power cycle closer to the ideal Lorentz cycle, and its thermal efficiency is more than 15% higher than that of a single working fluid power...

Claims

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Application Information

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IPC IPC(8): F28D15/04
CPCF28D15/046
Inventor 盖东兴孙靖宇陈晨晏楚骁尹洋
Owner WUHAN INSTITUTE OF TECHNOLOGY
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