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A cryogenic fluid cold energy utilization system

A low-temperature fluid and low-temperature technology, which is applied in the field of cold energy utilization of low-temperature fluids, can solve the problems of high economic cost and large power consumption, and achieve the effects of reducing pollutant discharge, reducing consumption and improving safety.

Inactive Publication Date: 2015-10-28
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In this process, refrigerants, water pumps, fans, etc. will consume a lot of electricity, and the economic cost is very high.

Method used

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  • A cryogenic fluid cold energy utilization system

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Embodiment Construction

[0012] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0013] Generally speaking, medium temperature means higher than -60°C and lower than 20°C, and low temperature means lower than -60°C.

[0014] Such as figure 1 As shown, the present invention provides a low-temperature fluid cold energy utilization system, the first heat exchanger 1, the second heat exchanger 2, the third heat exchanger 3, the first liquid booster pump 4, the second liquid The booster pump 5, the third liquid booster pump 6 and the expansion generator...

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Abstract

The invention discloses a system for utilizing cold energy of low-temperature fluid, relating to the field of the application of cold energy of liquid oxygen, liquid nitrogen and liquefied natural gas to power generation, refrigeration, cold storage and cooling air conditioning. The system comprises a low-temperature cycle, a medium-temperature refrigerant closed cycle and a low-temperature fluid cold quantity release flow, wherein the low-temperature cycle comprises first to third heat exchangers, a second liquid boosting pump and an expansion generator; the medium-temperature cycle comprises a second heat exchanger, a third heat exchanger and a third liquid boosting pump; the low-temperature fluid cold quantity release flow comprises a first liquid boosting pump and first to third heat exchangers. The cold quantity of the low-temperature fluid is finally utilized by secondary refrigerants in the third heat exchangers and the expansion generator, the cold quantities of the secondary refrigerants can be applied to refrigeration, cold storage and air conditioner cooling, and the generated energy of the expansion generator is left in a large amount on the basis of meeting the own requirement of the system, thereby making full use of the cold energy of the low-temperature fluid. By adopting the system, the cold energy of the low-temperature fluid can be fully utilized, the energy transformation efficiency is increased remarkably, pollutant discharge is reduced, and the performance of the system is improved.

Description

technical field [0001] The invention relates to the cold energy utilization of low-temperature fluids such as liquid oxygen, liquid nitrogen, and liquefied natural gas, and also relates to the utilization of power generation, freezing, refrigeration, refrigeration and air-conditioning technologies, and specifically a cold energy utilization system for low-temperature fluids. Background technique [0002] The products of the air separation industry, liquid oxygen and liquid nitrogen, have a wide range of uses and play an important role in metallurgy, chemical industry, petroleum, machinery, mining, food, military and other industrial sectors; as an important energy source, liquefied natural gas has a global There are a wide range of applications. However, the temperature of liquid oxygen, liquid nitrogen and liquefied natural gas is extremely low. The temperature of liquefied natural gas under normal pressure is about 110K, the temperature of liquid oxygen is about 90K, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B27/00F01K25/10F01K27/02
Inventor 何国庚蔡德华陈林
Owner HUAZHONG UNIV OF SCI & TECH
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