Multicomponent mixed work medium throttling refrigerant applicable to medium-low temperature zone

A multi-component mixed working medium and refrigerant technology, applied in the field of cryogenic refrigeration, can solve the problems that the mixed working medium cannot operate efficiently, the efficiency drops, and the operating temperature range is narrow

Inactive Publication Date: 2003-12-10
中科赛凌(北京)科技有限公司
View PDF2 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The latest research shows that the effective operating temperature range of a fixed-component multi-component mixed working fluid is relatively narrow, generally around 5-15K, and the eff

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multicomponent mixed work medium throttling refrigerant applicable to medium-low temperature zone
  • Multicomponent mixed work medium throttling refrigerant applicable to medium-low temperature zone
  • Multicomponent mixed work medium throttling refrigerant applicable to medium-low temperature zone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0071] In the following, the present invention will be further described in detail with reference to the figures and embodiments.

[0072] Combine figure 1 and image 3 Specifically clarify the thermal working process of the mixed working fluid throttling refrigerant proposed in the present invention:

[0073] The mixed working fluid throttling refrigerant of the present invention enters the compressor CP from the state L1 and is compressed to the state G01; then enters the cooler AC to be cooled to the state G0; enters the regenerative heat exchanger HX, and is further cooled to G1; and then passes through The throttling element JT becomes L3 after throttling; enters the evaporator EV, and becomes L2 after extracting the cold capacity; then enters the regenerative heat exchanger HX for reheating, returning to the state L1, and completing a thermodynamic cycle.

[0074] for figure 2 The basic working process of the thermodynamic cycle shown is the same, except that one stage of v...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The multicomponent mixed work medium throttling refrigerating agent applicable to medium-low temp. zone includes five groups of substances, the sum of their mole concentration is 100%, in which first group includes methane, krypton or mixture, total mole concentration is 5%-45%, second group includes tetrafluoromethane, nitrogen trifluoride or mixture, total mole concentration is 15%-55%; fourth group includes propylene, propane, perfluoropane, 1,1,1-trifluoroethane, 1,1-bifluoroethane, fluoroethane, propadiene, cyclopropane, or mixture, total mole concentration is 5%-25%; fifth group includes 1-butylene, isobutane, 2-methylbutane, 1-pentene, 3-methyl-1-butylene, 2-methylpentane, 2-butylene, isobutylene, n-butane, perfluorobutane, n-pentane or mixture, total mole concentration is 5%-25%.

Description

Technical field [0001] The present invention relates to cryogenic refrigeration technology, in particular to a multi-element mixed working medium throttling refrigerant suitable for medium and low temperature regions (150-200K). Background technique [0002] The traditional method to achieve a temperature range of 150-200K is to use a two-stage or three-stage external cascade refrigeration cycle, and the use of a cascade method to achieve a lower temperature makes the refrigeration system complex, low in efficiency and low in reliability. The use of multiple mixed working fluids in a regenerative throttling refrigeration cycle driven by a single compressor with a simple structure can efficiently achieve a temperature range of 150-200K. The system diagram of the mixed working fluid regenerative throttling refrigerator is shown in figure 1 It is mainly composed of compressor CP, cooler AC, counter-flow heat exchanger HX, throttling element JT and low-temperature evaporator EV. Som...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C09K5/04
Inventor 罗二仓公茂琼吴剑峰
Owner 中科赛凌(北京)科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap