WO2005105948A1 - 熱媒体組成物 - Google Patents
熱媒体組成物 Download PDFInfo
- Publication number
- WO2005105948A1 WO2005105948A1 PCT/JP2004/006220 JP2004006220W WO2005105948A1 WO 2005105948 A1 WO2005105948 A1 WO 2005105948A1 JP 2004006220 W JP2004006220 W JP 2004006220W WO 2005105948 A1 WO2005105948 A1 WO 2005105948A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- medium composition
- heating medium
- derivative
- carbon allotrope
- composition according
- Prior art date
Links
Classifications
-
- 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
- C09K5/08—Materials not undergoing a change of physical state when used
- C09K5/10—Liquid materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
-
- 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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the present invention relates to a heating medium composition applied to, for example, a cooling system of an internal combustion engine such as an engine, a cooling system of a fuel cell, a solar system, a floor heating system, an air conditioner, and the like.
- the present invention relates to a heat medium composition capable of suppressing a decrease in pH value and an increase in electrical conductivity by suppressing the heat medium composition effectively.
- heat medium compositions applied to cooling systems for internal combustion engines such as engines, solar systems, floor heating systems, air conditioning equipment, etc.
- glycols and alcohols etc.
- the addition of is known.
- the glycols and alcohols used as a base are exposed to a high-temperature and high-pressure atmosphere during use, and therefore oxidize slightly with the passage of time. Changes to degradation products such as formic acid. Therefore, over a long period of use, the oxidation of the base in the heat medium composition further progresses, and accordingly, the pH value of the heat medium composition also gradually decreases, and the cooling of the internal combustion engine such as an engine is cooled.
- a fuel cell is generally configured as a stack having a structure in which a large number of single cells, which are power generation units, are stacked. Since heat is generated from this stack during power generation, a coolant passage is provided during the separation to cool the stack, and the coolant flows through the coolant passage to cool the stack. .
- the ion-exchange resin is used to remove the ionic substances generated by oxidation of the base material, and the ion-exchange amount of the ion-exchange resin quickly decreases, and the exchange life is significantly reduced.
- the present invention has been made in view of such technical problems, and a heat medium composition capable of suppressing a decrease in pH value and an increase in conductivity by effectively suppressing oxidation of a base. The purpose is to provide. Disclosure of the invention
- the heat medium composition of the present invention (hereinafter, simply referred to as a composition) is characterized by containing a carbon isotope or a derivative thereof in a base.
- a base those having antifreeze properties are desirable, and specifically, those composed of one or a mixture of two or more selected from water, alcohols, daricols and dalicol ethers are desirable.
- alcohols include those composed of one or a mixture of two or more selected from methanol, ethanol, propanol, butanol, pentanol, hexanol, heptanol, and octanol. .
- Glycols include, for example, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, 1,3-propanediol, 1,3-butanediol, 1,5-pentanediol, and hexylene glycol.
- Glycol ethers include, for example, ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, triethylene glycol Chole monomethyl ether, tetraethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monoethyl ether, triethylene glycol monoethyl ether, tetraethylene glycol monoethyl ether, ethylene glycol monobutyl ether, Examples thereof include those composed of one or a mixture of two or more selected from diethylene glycol monobutyl ether, triethylene glycol monobutyl ether, and tetraethylene glycol monobutyl ether.
- composition of the present invention suppresses the oxidation of the base by including a carbon allotrope or a derivative thereof in the base, whereby the PH value of the composition caused by the oxidation of the base is reduced.
- the reduction and the increase in the conductivity are suppressed.
- Graphite, diamond, fullerene, and carbon nanotubes can be given as examples of the carbon allotrope exhibiting such effects.
- examples of the derivative of carbon allotrope include hydroxides, hydrides, fluorides, and bromides of carbon allotropes, and are particularly selected from hydroxides, hydrides, fluorides, and bromides of fullerenes. Species or two or more species are preferable in terms of availability, handling, and price.
- the content of the carbon allotrope or a derivative thereof is 0.0 It is desirably in the range of 0.1 to 10% by weight. When the content of the carbon allotrope or its derivative is smaller than the above range, a sufficient oxidation suppressing effect cannot be obtained, and when the content of the carbon allotrope or its derivative is larger than the above range, The effect of the increased amount cannot be obtained, which is uneconomical.
- composition of the present invention may contain, for example, caustic alkali for adjusting pH, a dye, an antifoaming agent, a preservative, and the like, in addition to the above-mentioned base and carbon allotrope.
- caustic alkali for adjusting pH
- a dye for example, phosphate, nitrate, nitrite, molybdate, tungstate, borate, silicate, sulfate, sulfite, carboxylate, amine salt, triazole, etc. good.
- Table 1 shows, as a preferred embodiment of this composition, a base obtained by adding ethylene glycol for the purpose of imparting antifreeze to ion-exchanged water, and containing a fullerene hydroxide in the base ( Examples 1 and 2) and a comparative example (Comparative Example 1) consisting only of the base material of Example 1 were mentioned.
- nanom spectra HX10-S manufactured by Frontier Carbon Co., Ltd. was used as the hydroxylated fullerene in Table 1.
- the composition of Comparative Example 1 had an initial conductivity of 0 aS / cm, whereas the conductivity after the oxidation deterioration test was 80 S / cm, and the conductivity increased significantly.
- the initial conductivity of each of the compositions of Examples 1 and 2 was 2 iS / cm and 1 S / cm, whereas the conductivity after the oxidation deterioration test was 45 x S / cm and 55 S / cm, indicating that the increase in conductivity was suppressed in both cases.
- the degradation products after the oxidative degradation test in the case of the composition of the comparative example, after the degradation test, the content increased significantly to 14 tmol / l. In this case, the amount of degradation products after the test was only a slight increase of 5 imol / 1 and 8 substitution / 1, indicating that each of the compositions according to Examples 1 and 2 was effective in suppressing the degradation. confirmed.
- composition of the present invention effectively suppresses the oxidation of the base by including a carbon allotrope or a derivative thereof in the base, whereby the heat medium composition caused by the oxidation of the base is reduced.
- a decrease in pH value and an increase in conductivity can be suppressed.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Fuel Cell (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006512702A JPWO2005105948A1 (ja) | 2004-04-28 | 2004-04-28 | 熱媒体組成物 |
PCT/JP2004/006220 WO2005105948A1 (ja) | 2004-04-28 | 2004-04-28 | 熱媒体組成物 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/006220 WO2005105948A1 (ja) | 2004-04-28 | 2004-04-28 | 熱媒体組成物 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005105948A1 true WO2005105948A1 (ja) | 2005-11-10 |
Family
ID=35241664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/006220 WO2005105948A1 (ja) | 2004-04-28 | 2004-04-28 | 熱媒体組成物 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPWO2005105948A1 (ja) |
WO (1) | WO2005105948A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007154161A (ja) * | 2005-11-30 | 2007-06-21 | Ind Technol Res Inst | カーボンナノカプセルを有する熱伝導流体 |
JP2008111612A (ja) * | 2006-10-31 | 2008-05-15 | Kayu Fu | 熱交換システム |
WO2009026865A1 (de) | 2007-08-30 | 2009-03-05 | Soehnle Professional Gmbh & Co. Kg | Liegevorrichtung |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996021706A1 (de) * | 1995-01-14 | 1996-07-18 | Jochen Daume | Wärmeträgerkonzentrat, verfahren zu dessen herstellung sowie dessen verwendung und latentwärmespeicher |
JPH1036877A (ja) * | 1996-07-19 | 1998-02-10 | New Aqua Gijutsu Kenkyusho:Kk | 燻液から調製されたる食用油の酸化防止剤 |
JPH1045408A (ja) * | 1996-07-26 | 1998-02-17 | New Aqua Gijutsu Kenkyusho:Kk | 超微粒炭素組成物溶液と該溶液を添加した食材又は食品 |
JPH1046134A (ja) * | 1996-08-02 | 1998-02-17 | Nippon Chem Kogyo Kk | 不凍液組成物 |
JP2004039560A (ja) * | 2002-07-05 | 2004-02-05 | Nissan Motor Co Ltd | 燃料電池システム |
-
2004
- 2004-04-28 WO PCT/JP2004/006220 patent/WO2005105948A1/ja active Application Filing
- 2004-04-28 JP JP2006512702A patent/JPWO2005105948A1/ja not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996021706A1 (de) * | 1995-01-14 | 1996-07-18 | Jochen Daume | Wärmeträgerkonzentrat, verfahren zu dessen herstellung sowie dessen verwendung und latentwärmespeicher |
JPH1036877A (ja) * | 1996-07-19 | 1998-02-10 | New Aqua Gijutsu Kenkyusho:Kk | 燻液から調製されたる食用油の酸化防止剤 |
JPH1045408A (ja) * | 1996-07-26 | 1998-02-17 | New Aqua Gijutsu Kenkyusho:Kk | 超微粒炭素組成物溶液と該溶液を添加した食材又は食品 |
JPH1046134A (ja) * | 1996-08-02 | 1998-02-17 | Nippon Chem Kogyo Kk | 不凍液組成物 |
JP2004039560A (ja) * | 2002-07-05 | 2004-02-05 | Nissan Motor Co Ltd | 燃料電池システム |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007154161A (ja) * | 2005-11-30 | 2007-06-21 | Ind Technol Res Inst | カーボンナノカプセルを有する熱伝導流体 |
JP2008111612A (ja) * | 2006-10-31 | 2008-05-15 | Kayu Fu | 熱交換システム |
WO2009026865A1 (de) | 2007-08-30 | 2009-03-05 | Soehnle Professional Gmbh & Co. Kg | Liegevorrichtung |
Also Published As
Publication number | Publication date |
---|---|
JPWO2005105948A1 (ja) | 2008-03-13 |
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