CN115558469A - Mixed phase change cold accumulation medium - Google Patents
Mixed phase change cold accumulation medium Download PDFInfo
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- CN115558469A CN115558469A CN202211233613.0A CN202211233613A CN115558469A CN 115558469 A CN115558469 A CN 115558469A CN 202211233613 A CN202211233613 A CN 202211233613A CN 115558469 A CN115558469 A CN 115558469A
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- 230000008859 change Effects 0.000 title claims description 37
- 238000009825 accumulation Methods 0.000 title claims description 10
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 claims abstract description 48
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims abstract description 27
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims abstract description 23
- BKIMMITUMNQMOS-UHFFFAOYSA-N nonane Chemical compound CCCCCCCCC BKIMMITUMNQMOS-UHFFFAOYSA-N 0.000 claims abstract description 22
- JRZJOMJEPLMPRA-UHFFFAOYSA-N 1-nonene Chemical compound CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims abstract description 18
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 claims abstract description 13
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 4
- 239000003063 flame retardant Substances 0.000 claims description 4
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 238000002560 therapeutic procedure Methods 0.000 abstract description 13
- 230000007704 transition Effects 0.000 abstract description 10
- 230000005496 eutectics Effects 0.000 abstract description 4
- 150000001335 aliphatic alkanes Chemical class 0.000 abstract description 3
- 150000001336 alkenes Chemical class 0.000 abstract description 3
- 238000007710 freezing Methods 0.000 abstract description 3
- 230000008014 freezing Effects 0.000 abstract description 3
- 239000012071 phase Substances 0.000 description 23
- 239000007788 liquid Substances 0.000 description 8
- 239000000306 component Substances 0.000 description 7
- 238000010587 phase diagram Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- AFABGHUZZDYHJO-UHFFFAOYSA-N 2-Methylpentane Chemical compound CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 2
- GXDHCNNESPLIKD-UHFFFAOYSA-N 2-methylhexane Natural products CCCCC(C)C GXDHCNNESPLIKD-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 229910017053 inorganic salt Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 210000003403 autonomic nervous system Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000315 cryotherapy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000000374 eutectic mixture Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000008642 heat stress Effects 0.000 description 1
- 239000012533 medium component Substances 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/066—Cooling mixtures; De-icing compositions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/10—Cooling bags, e.g. ice-bags
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Veterinary Medicine (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
The application provides a mixed phase transition cold-storage medium comprises two kinds or more in n-hexane, n-heptane, n-octane, n-nonane, n-octene, n-nonene, the operating temperature of mixed phase transition cold-storage medium is 200K and following warm area, and the mixed phase transition cold-storage medium that this application provided utilizes mixed eutectic to reduce the freezing point of normal alkane and normal alkene, and the binary or many mixed working medium that obtains, phase transition latent heat are big, and phase transition temperature is controllable, is applicable to and regards as cold-storage medium in the low temperature cold therapy device.
Description
Technical Field
The application relates to a cold accumulation medium for low-temperature cold therapy, in particular to a mixed phase-change cold accumulation medium.
Background
Cryotherapy is a physical intervention therapy in which physical factors (such as ice, cold water, liquid nitrogen, etc.) lower than the normal body temperature of a human body act on the whole body or parts of the human body. The cold therapy can reduce the temperature of muscle tissues and the blood flow speed of athletes, so that the internal environment of a human body generates a heat stress effect, the negative effects caused by imbalance of heat production and heat dissipation in the body in the exercise process are adjusted, the cardiovascular burden of the human body can be reduced, the elimination of metabolic byproducts in muscles is promoted, and the function of an autonomic nervous system is improved. As one of the physical treatments, the cold therapy technology is widely used in the field of sports.
The conventional cold therapy method is to use ice bags or liquid nitrogen and other media to carry out physical cooling so as to achieve the purpose of cold therapy. However, the treatment temperature is about 0 ℃, and the temperature is relatively high; the latter is at too low a temperature and often the apparatus is complex, bulky and inconvenient to transport and use. For local cold therapy, the latent heat energy of the cold accumulation medium in solid-liquid phase change can meet the refrigerating capacity requirement in cold therapy.
The cold accumulation medium of the cold therapy device needs to meet the characteristics of low freezing point, large latent heat change, low working pressure and the like, and the commonly used phase change cold accumulation medium which can be used in the low-temperature cold therapy device comprises alkane and olefin components such as n-hexane, n-heptane, isohexane, isoheptane, n-octane, n-nonane, n-octene and the like, esters and alcohols with the number of carbon atoms close to that of the alkane and olefin components, and inorganic salts and the like, wherein the unit molar phase change latent heat of the isoparaffin, the esters, the alcohols and the like is relatively small, and the cold accumulation capacity is relatively weak. The latent heat of phase change of the inorganic salt component is large, but the phase change working medium which is suitable for the inorganic salt component is difficult to match in a temperature zone below 200K. In addition, the solidifying point of a single working medium component is usually large, the phase change temperature is not controllable, and a cold storage working medium matched with the phase change temperature is difficult to find.
Disclosure of Invention
In view of this, it is necessary to provide a binary or multi-element working medium which can operate in a low temperature region (200K or below), is low in cost, is easy to obtain, and has large phase change latent heat, and is used as a mixed phase change cold storage medium for low temperature cold therapy.
In order to solve the above problems, the following technical solutions are adopted in the present application:
the application provides a mixed phase change cold storage medium, which consists of two or more of n-hexane, n-heptane, n-octane, n-nonane, n-octene and n-nonene, wherein the working temperature of the mixed phase change cold storage medium is a temperature region of 200K or below.
In some embodiments, the working temperature of the mixed phase change cold storage medium is not lower than 180K, and the mixed phase change cold storage medium comprises any two or more of the following components in parts by mole: 1-100 parts of n-hexane, 1-92 parts of n-heptane, 1-9 parts of n-octane, 1-15 parts of n-nonane, 1-100 parts of n-octene and 1-55 parts of n-nonene.
In some embodiments, the working temperature of the mixed phase change cold storage medium is not lower than 170K, and the mixed phase change cold storage medium comprises any two or more of the following components in parts by mole: 1-66 parts of n-hexane, 1-51 parts of n-heptane, 1-4 parts of n-octane, 1-8 parts of n-nonane, 1-91 parts of n-octene and 1-34 parts of n-nonene.
In some embodiments, the working temperature of the mixed phase change cold storage medium is not lower than 160K, and the mixed phase change cold storage medium comprises any two or more of the following components in parts by mole: 1-36 parts of n-hexane, 1-26 parts of n-heptane, 1-4 parts of n-nonane, 1-46 parts of n-octene and 1-19 parts of n-nonene.
In some embodiments, the mixed phase change cold storage medium further comprises a flame retardant.
In some of these embodiments, the flame retardant comprises chlorinated paraffin.
This application adopts above-mentioned technical scheme, and its beneficial effect as follows:
the application provides a mixed phase transition cold-storage medium comprises two or more than two kinds among n-hexane, n-heptane, n-octane, n-nonane, n-octene, n-nonene, the operating temperature of mixed phase transition cold-storage medium is 200K and following warm area, and the mixed phase transition cold-storage medium that the application provided utilizes the eutectic mixture to reduce the freezing point of n-alkane and n-alkene, and binary or many units mixed working medium that obtains, phase transition latent heat is big, and phase transition temperature is controllable, is applicable to as the cold-storage medium in the low temperature cold therapy device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application or the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of an embodimentFrom n-heptane (nC) 7 H 16 ) And n-nonene (nC) 9 H 18 ) The solid-liquid equilibrium phase diagram of the binary mixed medium.
FIG. 2 shows another embodiment of n-hexane (nC) 6 H 14 ) And n-heptane (nC) 7 H 16 ) The solid-liquid equilibrium phase diagram of the binary mixed medium.
FIG. 3 is a diagram of n-octane (nC) provided by another embodiment 8 H 18 ) And n-octene (nC) 8 H 16 ) The solid-liquid equilibrium phase diagram of the binary mixed medium.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present application and should not be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "upper", "lower", "horizontal", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments.
Example one
Referring to FIG. 1, the present invention provides a method for preparing a compound of n-heptane (nC) 7 H 16) And n-nonene (nC) 9 H 18 ) The solid-liquid equilibrium phase diagram of the binary mixed medium. When the mole fraction of the n-heptane is 0.599, the binary mixed medium can reach the lowest eutectic temperature of 173.02K, and the latent heat of solid-liquid phase change of the mixture at the temperature can reach 13400.60J/mol.
Example two
Referring to FIG. 2, the present invention provides a process for preparing n-hexane (nC) 6 H 14 ) And n-heptane (nC) 7 H 16 ) The solid-liquid equilibrium phase diagram of the binary mixed medium. When the mole fraction of the normal hexane is 0.569, the binary mixed medium can reach the minimum eutectic temperature of 167.40K, and the latent heat of solid-liquid phase change of the mixture at the temperature can reach 13487.28J/mol.
EXAMPLE III
Referring to FIG. 3, a normal octane (nC) is provided in accordance with the present invention 8 H 18 ) And n-octene (nC) 8 H 16 ) The solid-liquid equilibrium phase diagram of the binary mixed medium. When the mole fraction of n-octane is 0.046, the lowest eutectic temperature of the binary mixed medium can be 170.71K, and the solid-liquid phase change latent heat of the mixture at the temperature can be 15570.04J/mol.
It is understood that the technical features of the above-mentioned embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, the combination should be considered as the scope of the present specification as long as there is no contradiction between the technical features.
The foregoing is considered as illustrative only of the preferred embodiments of the invention, and is presented only for the purpose of illustrating the principles of the invention and not in any way to limit its scope. Any modifications, equivalents, and improvements made within the spirit and principles of the present application and other embodiments of the present application that one skilled in the art may recognize without inventive faculty are intended to be included within the scope of the present application.
Claims (6)
1. The mixed phase change cold accumulation medium is characterized by consisting of two or more of n-hexane, n-heptane, n-octane, n-nonane, n-octene and n-nonene, and the working temperature of the mixed phase change cold accumulation medium is a temperature region of 200K or below.
2. The mixed phase change cold storage medium as claimed in claim 1, wherein the working temperature of the mixed phase change cold storage medium is not lower than 180K, and the mixed phase change cold storage medium comprises any two or more of the following components in parts by mole: 1-100 parts of n-hexane, 1-92 parts of n-heptane, 1-9 parts of n-octane, 1-15 parts of n-nonane, 1-100 parts of n-octene and 1-55 parts of n-nonene.
3. The hybrid phase change cold storage medium of claim 1, wherein the working temperature of the hybrid phase change cold storage medium is not lower than 170K, and the hybrid phase change cold storage medium comprises any two or more of the following components in parts by mole: 1-66 parts of n-hexane, 1-51 parts of n-heptane, 1-4 parts of n-octane, 1-8 parts of n-nonane, 1-91 parts of n-octene and 1-34 parts of n-nonene.
4. The mixed phase change cold storage medium as claimed in claim 1, wherein the working temperature of the mixed phase change cold storage medium is not lower than 160K, and the mixed phase change cold storage medium comprises any two or more of the following components in parts by mole: 1-36 parts of n-hexane, 1-26 parts of n-heptane, 1-4 parts of n-nonane, 1-46 parts of n-octene and 1-19 parts of n-nonene.
5. The hybrid phase change cold storage medium of claim 1, further comprising a flame retardant.
6. The hybrid phase change cold storage medium of claim 5, wherein said flame retardant comprises chlorinated paraffin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211233613.0A CN115558469A (en) | 2022-10-10 | 2022-10-10 | Mixed phase change cold accumulation medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211233613.0A CN115558469A (en) | 2022-10-10 | 2022-10-10 | Mixed phase change cold accumulation medium |
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| CN115558469A true CN115558469A (en) | 2023-01-03 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285664A (en) * | 2007-04-09 | 2008-10-15 | 李建民 | Supercritical phase-change intensified heat diffusion method and its heat-transfer medium and applications |
| CN107975993A (en) * | 2017-11-14 | 2018-05-01 | 中国科学院理化技术研究所 | A kind of -40 DEG C ~ -190 DEG C cold storage storage bins |
| CN109033740A (en) * | 2018-09-06 | 2018-12-18 | 华南理工大学 | A kind of prediction technique and system of low temperature phase change cold storage materials thermophysics performance |
| CN110028937A (en) * | 2019-04-26 | 2019-07-19 | 中国科学院理化技术研究所 | A kind of non-combustible cool storage medium of mixing |
| CN111423854A (en) * | 2020-05-13 | 2020-07-17 | 全球能源互联网研究院有限公司 | Mixed cold storage medium and application thereof |
-
2022
- 2022-10-10 CN CN202211233613.0A patent/CN115558469A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285664A (en) * | 2007-04-09 | 2008-10-15 | 李建民 | Supercritical phase-change intensified heat diffusion method and its heat-transfer medium and applications |
| CN107975993A (en) * | 2017-11-14 | 2018-05-01 | 中国科学院理化技术研究所 | A kind of -40 DEG C ~ -190 DEG C cold storage storage bins |
| CN109033740A (en) * | 2018-09-06 | 2018-12-18 | 华南理工大学 | A kind of prediction technique and system of low temperature phase change cold storage materials thermophysics performance |
| CN110028937A (en) * | 2019-04-26 | 2019-07-19 | 中国科学院理化技术研究所 | A kind of non-combustible cool storage medium of mixing |
| CN111423854A (en) * | 2020-05-13 | 2020-07-17 | 全球能源互联网研究院有限公司 | Mixed cold storage medium and application thereof |
Non-Patent Citations (1)
| Title |
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| 薛荣书: "流体汽液相平衡的分子模拟研究", 中国优秀硕士论文全文数据库工程科技Ⅰ辑, no. 8, 15 December 2005 (2005-12-15) * |
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