Cryogenic stage mixed refrigerant suitable in two-stage cascade refrigeration system
A technology of mixed refrigerant and cascade refrigeration, which is applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve problems such as the failure of the system to work normally, and achieve the effects of good mutual solubility, increased refrigeration capacity, and enhanced mutual solubility.
Active Publication Date: 2008-10-15
青岛中科未来健康研究院有限公司
View PDF1 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
But due to CO 2 Has a very high triple point temperature (-56.6°C), so the above-mentioned CO 2 The mixture used at low temperature is very easy to cause the system to fail to work properly due to the solid phase precipitation of carbon dioxide
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0021] Example 1: ethane with a molar concentration of 50% and fluoromethane with a molar concentration of 50% are physically mixed at room temperature to obtain a low-temperature-grade mixed refrigerant applicable to a two-stage cascade refrigeration system.
Embodiment 2
[0022] Example 2: ethane with a molar concentration of 55% and fluoromethane with a molar concentration of 45% are physically mixed at room temperature to obtain a low-temperature-grade mixed refrigerant applicable to a two-stage cascade refrigeration system.
Embodiment 3
[0023] Example 3: ethane with a molar concentration of 60% and fluoromethane with a molar concentration of 40% are physically mixed at room temperature to obtain a low-temperature-grade mixed refrigerant applicable to a two-stage cascade refrigeration system.
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
Login to view more Abstract
The invention relates to low temperature stage mixed refrigerant applicable to two-stage cascade refrigeration systems. The mixed refrigerant comprises ethane and monofluoro-methane, and is formed through physical mixture, wherein the molarity of ethane is 50 to 75 percent, and the balance is monofluoro-methane. The mixed refrigerant can also comprises ethane, monofluoro-methane and perfluoroethane, and is formed through physical mixture, wherein the molarity of ethane is 40 to 70 percent; the molarity of monofluoro-methane is 5 to 40 percent; the balance is perfluoroethane. The mixed refrigerant has high efficiency and high evaporation pressure, as well as good refrigeration capacity under the same compressor displacement, has zero ODP, greatly decreases GWP than R503 and R508B, and has good intersolubility with lubricating oil.
Description
technical field [0001] The invention relates to a mixed refrigerant, in particular to a mixed refrigerant suitable for a low-temperature stage in a two-stage cascade refrigeration system. Background technique [0002] Now the industry still generally adopts a two-stage cascade refrigeration cycle to achieve a refrigeration temperature of about -80°C. The basic principle of cascade refrigeration is to use a high temperature stage refrigeration system to cool a low temperature stage system to achieve a lower refrigeration temperature, where each stage is a complete vapor compression cycle. Generally speaking, the evaporation temperature of the high-temperature stage refrigeration system is generally between -30°C and -40°C, while the low-temperature stage generally works between -60°C and -80°C. [0003] The low-temperature grade refrigerants in the traditional cascade refrigeration system that can be applied to the -80°C temperature range include trifluorochloromethane (CClF...
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
Login to view more Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04
Inventor 公茂琼张宇吴剑峰
Owner 青岛中科未来健康研究院有限公司
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
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