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Novel power cycle mixed working medium taking CO2 as main component, as well as system and method thereof

A technology of mixed working fluid and power cycle, applied in the field of power machinery, can solve the problem of non-condensation, and achieve the effect of low cycle pressure, good environmental friendliness, and reduced system cost

Active Publication Date: 2014-07-23
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But due to CO 2 The critical temperature is 31°C, with CO 2 When used as a power cycle working fluid, it cannot be condensed by conventional cooling water

Method used

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  • Novel power cycle mixed working medium taking CO2 as main component, as well as system and method thereof
  • Novel power cycle mixed working medium taking CO2 as main component, as well as system and method thereof
  • Novel power cycle mixed working medium taking CO2 as main component, as well as system and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A1

[0018] Embodiment A1: Propane and CO2 are physically mixed at a mass percentage of 50:50 when the system is filled with working fluid.

Embodiment B1

[0019] Embodiment B1: When the system is filled with working fluid, cyclopropane and CO 2 Physical mixing is carried out at a mass percentage of 10:90.

Embodiment B2

[0020] Embodiment B2: When the system is filled with working fluid, cyclopropane and CO 2 Physical mixing is carried out at a mass percentage of 20:80.

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Abstract

The invention relates to the technical field of power machinery, and discloses a novel power cycle mixed working medium taking CO2 as a main component, as well as a system and a method thereof. The mixed working medium is prepared by physically mixing CO2 with one of propane, cyclopropane, propyne, butane, iso-butane, cis-butene, trans-butene and cyclopentane at certain proportion. The mixed working medium takes CO2 as a main component and one of propane, cyclopropane, propyne, butane, iso-butane, cis-butene, trans-butene and cyclopentane as a second component, so that the mixed working medium can be condensed by the conventional cooling water, and the working medium also has lower flammability. When being used for exchanging heat with a heat source fluid, the mixed working medium has better temperature matching, and the cycling has higher efficiency.

Description

technical field [0001] The invention relates to the technical field of power machinery, in particular to a CO 2 It is a new type of power cycle mixed working fluid as the main component. Background technique [0002] Low-grade thermal energy exists widely, mainly including low-temperature geothermal energy, solar thermal energy, and industrial waste heat energy. Low-grade thermal energy reserves are huge, and if they can be used efficiently, they will produce huge economic and social benefits. The total amount of waste heat in the industrial field is huge. The total waste heat resources of metallurgy, chemical industry, coal and other industries account for 17%-67% of their fuel consumption, and the recyclable waste heat resources are about 60% of the total waste heat resources. [0003] Medium and high temperature heat energy can be recovered by using the traditional Rankine cycle with water as the working medium. When the heat energy below 350°C adopts the traditional Ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04
Inventor 潘利生魏小林李博史维秀
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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