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An experimental method for heat transfer of supercritical water and carbon dioxide mixed working medium

A carbon dioxide, mixed working fluid technology, applied in the direction of thermal development of materials, thermal conductivity of materials, etc., can solve the problems of difficult to achieve steady-state conditions, consuming manpower and material resources, and difficult to operate, avoiding current cross-flow, saving energy, improving The effect of the work environment

Active Publication Date: 2022-05-03
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing experimental bench does not adopt modular automatic control design, which is difficult to operate, takes a long time to operate, consumes manpower and material resources, and is difficult to achieve steady-state conditions

Method used

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  • An experimental method for heat transfer of supercritical water and carbon dioxide mixed working medium
  • An experimental method for heat transfer of supercritical water and carbon dioxide mixed working medium
  • An experimental method for heat transfer of supercritical water and carbon dioxide mixed working medium

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Embodiment 1

[0044] As an embodiment of the experimental method of supercritical water and carbon dioxide mixed working fluid heat transfer described in the present invention, such as figure 1 As shown, the experimental method of supercritical water and carbon dioxide mixed working medium heat transfer includes water supply: realized by the water supply unit 100, wherein the working medium water in the water storage tank 101 flows through the first control assembly 102 connected thereto; for carbon dioxide: Realized by the carbon dioxide supply unit 200, wherein the working medium carbon dioxide in the carbon dioxide liquefaction supply assembly 201 flows through the second control assembly 202 connected thereto; mixing and heating: realized by the preheating mixing unit 300, wherein the water supply unit 100 The working medium water is preheated by the first preheating component 301, the working medium liquid carbon dioxide in the carbon dioxide unit 200 is preheated by the second preheati...

Embodiment 2

[0057] The difference between this embodiment and embodiment 1 is that, as Figure 5 As shown, the carbon dioxide liquefaction supply assembly 201 includes a carbon dioxide gas cylinder 201a connected in sequence, a third control assembly 201b, a carbon dioxide liquefaction supply tank 201c, and a refrigerant for cooling the carbon dioxide liquefaction; the third control assembly 201b controls Carbon dioxide is passed into the carbon dioxide liquefaction supply tank 201c from the carbon dioxide cylinder 201a.

[0058]preferred, such as Figure 6 As shown, the carbon dioxide liquefaction supply tank 201c includes a refrigerant inlet 201c-1 located at the bottom of the carbon dioxide liquefaction supply tank 201c, which is located inside the carbon dioxide liquefaction supply tank 201c and connected to the refrigerant inlet 201c-1. 1 connected cooling coil 201c-2, a refrigerant outlet 201c-3 located on the side wall of the carbon dioxide liquefaction supply tank 201c and commun...

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Abstract

The invention discloses an experimental method for heat transfer of supercritical water and carbon dioxide mixed working medium, which includes: water supply: realized by a water supply unit, wherein the working medium water in the water storage tank flows through the first control component connected with it; Carbon dioxide supply: realized by the carbon dioxide supply unit, wherein the working medium carbon dioxide in the carbon dioxide liquefaction supply component flows through the second control component connected to it; mixing and heating: realized by the preheating mixing unit, wherein the working medium in the water supply unit The quality water is preheated by the first preheating component, and the working medium liquid carbon dioxide in the carbon dioxide unit is preheated by the second preheating component, mixed in the mixing chamber, and then heated by the third preheating component; temperature control test: by The test component monitors system parameters; cooling: cooling by the cooling unit; pressure-controlled discharge: realized by the pressure-controlled discharge unit, in which the electric pressure regulating valve and the pneumatic back pressure valve are used in combination to control the pressure of the working fluid.

Description

technical field [0001] The invention belongs to the technical field of supercritical mixed working medium, and in particular relates to an experimental method for heat transfer of supercritical water and carbon dioxide mixed working medium. Background technique [0002] Supercritical working fluid has a good application prospect in the field of multi-energy hybrid power generation. In the existing measurement and research on the heat transfer characteristics of supercritical working fluids, pure working fluids are mostly used. There is no measurement of the heat transfer characteristics of supercritical water and carbon dioxide mixed working fluid. For the development of new polygeneration technology for thermal power generation, it is urgent to invent a system and method for studying the heat transfer characteristics of supercritical water and carbon dioxide mixed working fluid. The measurement of the mixed working fluid needs to ensure that the thermal physical propertie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/20G01N25/18
CPCG01N25/20G01N25/18
Inventor 刘东张翰林吴昊旻李莎李强
Owner NANJING UNIV OF SCI & TECH
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