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WO2020031618A1 - Composition de matériau de stockage de chaleur et système de stockage de chaleur pour le conditionnement d'air d'un bâtiment - Google Patents

Composition de matériau de stockage de chaleur et système de stockage de chaleur pour le conditionnement d'air d'un bâtiment Download PDF

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Publication number
WO2020031618A1
WO2020031618A1 PCT/JP2019/027736 JP2019027736W WO2020031618A1 WO 2020031618 A1 WO2020031618 A1 WO 2020031618A1 JP 2019027736 W JP2019027736 W JP 2019027736W WO 2020031618 A1 WO2020031618 A1 WO 2020031618A1
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Prior art keywords
heat storage
storage material
material composition
mass
sodium
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PCT/JP2019/027736
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English (en)
Japanese (ja)
Inventor
崇 桃井
努 篭橋
重和 宮下
相培 李
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Yazaki Corp
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Yazaki Corp
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F23/00—Features relating to the use of intermediate heat-exchange materials, e.g. selection of compositions
    • F28F23/02—Arrangements for obtaining or maintaining same in a liquid state
    • 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
    • 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
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

Definitions

  • the present invention relates to a heat storage material composition and a heat storage system for cooling and heating a building, and more particularly, to a heat storage material composition suitable for a heat storage system for cooling and heating a building, and a heat storage system for cooling and heating a building including the same.
  • a latent heat storage material composition utilizing latent heat generated or absorbed at the time of a phase change from a liquid to a solid or at the time of a phase change from a solid to a liquid has been known.
  • the latent heat storage material composition is used, for example, in a heat storage system for cooling and heating a building.
  • the latent heat storage material composition generally has a large amount of heat storage, operates at a predetermined temperature level, is stable for a long period of time, is inexpensive, has no toxicity, and has no non-corrosiveness. And other characteristics are required.
  • the latent heat storage material composition melts and solidifies at a temperature of 20 ° C. or more and 30 ° C. or less, which is a general use temperature range for cooling and heating of a building.
  • the latent heat storage material composition preferably has a lower melting limit Ts of 20 ° C. or higher and an upper melting limit Tf of 30 ° C. or lower.
  • the melting lower limit temperature Ts means a lower limit temperature at which the latent heat storage material composition develops latent heat of fusion
  • the melting upper limit temperature Tf means an upper limit temperature at which the latent heat storage material composition develops latent heat of fusion. .
  • FIG. 1 is a graph showing an example of the relationship between the temperature at which the latent heat storage material composition develops latent heat of fusion and the amount of heat storage.
  • A is the curve showing the preferred latent heat storage material composition M A heat storage system for heating and cooling of buildings
  • B denotes a latent heat storage material composition M B is not suitable for heat storage system for heating and cooling of buildings It is a curve.
  • D indicates the lower melting temperature Ts of the curve A
  • E indicates the upper melting temperature Tf of the curve A
  • C indicates the latent heat generation temperature width which is the difference between the upper melting temperature Tf and the lower melting temperature Ts, respectively. .
  • the melting lower limit temperature Ts of 20 ° C. and the melting upper limit temperature Tf of 29.5 ° C. shown in FIG. 1 are examples, and in the present embodiment, the melting lower limit temperature Ts and the melting upper limit temperature Tf are not limited to these numerical values.
  • the latent heat generation temperature width C is in a range of 20 ° C. or more and 30 ° C. or less (29.5 ° C. or less) suitable for a latent heat storage material composition of a heat storage system for cooling and heating a building.
  • the latent heat storage material composition M A of the curve A the melting lower limit temperature Ts is 20 ° C. or higher and the melting maximum temperature Tf is set to 30 ° C. or less.
  • the melting lower limit temperature Ts is 20 ° C. or higher and the melting maximum temperature Tf is the latent heat storage material composition of 30 ° C. or less M A
  • efficient latent heat storage material composition in the general temperature range of heating and cooling of buildings Heat storage and heat dissipation are possible. Therefore, M A is the latent heat storage material composition is suitable as a latent heat storage material composition of the heat storage system for heating and cooling of buildings.
  • the latent heat generation temperature width C deviates from 20 ° C. to 30 ° C. (29.5 ° C. or less) suitable for a latent heat storage material composition of a heat storage system for cooling and heating a building.
  • the latent heat storage material composition M B of the curve B is the melting lower limit temperature Ts is set to less than 20 ° C..
  • the high-temperature side of the intersection of the two intersections of the horizontal axis and the curve B in FIG. 1, i.e., the temperature melting maximum temperature Tf of the latent heat storage material composition M B does not specify numerical values in FIG. 1 , But more than 30 ° C.
  • Such latent heat storage material composition M B it is not possible to use all of the heat storage amount with the heat storage material composition originally heating and cooling of buildings, as latent heat storage material composition of the heat storage system for heating and cooling of buildings Not preferred.
  • Patent Literature 1 discloses a heat storage comprising sodium sulfate and / or a eutectic salt thereof, water, and a phase separation inhibitor, and containing a predetermined amount of water. A material composition is disclosed. According to the heat storage material composition described in Patent Document 1, even if sodium sulfate decahydrate contained therein is repeatedly coagulated and melted, a decrease in heat storage amount is suppressed.
  • Non-Patent Document 1 discloses a eutectic hydrate of sodium sulfate decahydrate and disodium hydrogen phosphate decahydrate as a conventional latent heat storage material composition.
  • the melting point of the heat storage material composition is reduced without using a melting point modifier such as water. Further, according to the eutectic type heat storage material composition, even if solidification and melting are repeated, a decrease in heat storage amount is suppressed.
  • the heat storage material composition of Patent Document 1 has a problem that the heat storage amount is small. Further, sodium sulfate decahydrate, which is included in the heat storage material composition of Patent Document 1 and participates in the action of the heat storage material, has a phase change temperature of about 32 ° C. and a maximum melting temperature Tf of more than 30 ° C. Furthermore, the eutectic type heat storage material composition described in Non-Patent Document 1 has a phase change temperature of about 29 to 32 ° C., and a melting upper limit temperature Tf substantially exceeding 30 ° C.
  • the heat storage material compositions of Patent Document 1 and Non-Patent Document 1 have a melting upper limit temperature substantially exceeding 30 ° C. For this reason, the heat storage material compositions of Patent Literature 1 and Non-Patent Literature 1 have a small amount of heat storage at 20 ° C. or more and 30 ° C. or less, which is a general use temperature range for cooling and heating a building. Therefore, the heat storage material compositions of Patent Document 1 and Non-Patent Document 1 have a problem that they are not suitable as a latent heat storage material composition of a heat storage system for cooling and heating a building.
  • the heat storage material composition of Patent Document 1 has a problem that the temperature range in which the phase change of the latent heat storage material composition occurs due to the contained water is large, so that the latent heat generation temperature range is large.
  • An object of the present invention is to provide a heat storage material composition having a minimum melting temperature of 20 ° C. or more and a maximum melting temperature of 30 ° C. or less and a latent heat of fusion of 140 J / g or more, and a heat storage system for cooling and heating buildings.
  • the heat storage material composition according to the first aspect of the present invention includes a main agent consisting of sodium sulfate decahydrate, disodium hydrogenphosphate decahydrate, and trisodium phosphate decahydrate, and has a lower melting limit temperature. Is 20 ° C. or higher, the melting upper limit temperature is 30 ° C. or lower, and the latent heat of fusion is 140 J / g or more.
  • the heat storage material composition according to the second aspect of the present invention is the heat storage material composition according to the first aspect, wherein the sodium sulfate decahydrate is present in an amount of 17.9 to 32.5 per 100% by mass of the main agent. % By mass, 32.5 to 55.0% by mass of the disodium hydrogenphosphate dodecahydrate, and 15 to 40.5% by mass of the trisodium phosphate dodecahydrate.
  • the heat storage material composition according to the third aspect of the present invention is the heat storage material composition according to the first or second aspect, wherein the content of the sodium sulfate decahydrate in the main agent is X mass%,
  • X, Y and Z are represented by the following formula ( Satisfies 1) to (4).
  • [Equation 1] X + Y + Z 100 (1)
  • the heat storage material composition according to the fourth aspect of the present invention is the heat storage material composition according to any one of the first to third aspects, further including surplus water, wherein the surplus water is contained in 100 parts by mass of the main agent. 9 parts by mass or less.
  • the heat storage material composition according to a fifth aspect of the present invention is the heat storage material composition according to any one of the first to fourth aspects, wherein the heat storage material composition comprises an organic unsaturated carboxylic acid, an organic unsaturated sulfonic acid, and an organic unsaturated phosphoric acid. At least one monomer selected from the group consisting of an organic unsaturated amide, an organic unsaturated alcohol, an organic unsaturated carboxylate, an organic unsaturated sulfonate, and an organic unsaturated phosphate; And a first phase separation inhibitor obtained by polymerizing the reactive monomer.
  • the heat storage material composition according to the sixth aspect of the present invention is the heat storage material composition according to any one of the first to fifth aspects, wherein the heat storage material composition comprises sodium chloride, potassium chloride, sodium nitrate, sodium bromide, ammonium chloride, and odor. It further includes at least one melting point depressant selected from the group consisting of ammonium fluoride, ammonium sulfate, ammonium nitrate, ammonium phosphate, and urea.
  • Heat storage material composition according to the seventh aspect of the present invention is the heat storage material composition according to any of embodiments of the first to sixth, borax Na 2 B 4 O 5 (OH ) 4 ⁇ 8H 2 O, Calcium hydroxide, barium hydroxide, strontium hydroxide, aluminum hydroxide, graphite, aluminum, titanium dioxide, hectorite, smectite clay, bentonite, laponite, propylene glycol, ethylene glycol, glycerin, ethylenediaminetetraacetic acid, sodium alkyl sulfate, alkyl It further includes at least one supercooling inhibitor selected from the group consisting of sodium phosphate, potassium alkyl sulfate, and potassium alkyl phosphate.
  • the heat storage material composition according to the eighth aspect of the present invention is the heat storage material composition according to any one of the first to seventh aspects, wherein the heat storage material composition comprises sodium silicate, water glass, polyacrylic acid, sodium polyacrylate, Carboxylate polyether polymer, sodium acrylic acid / maleic acid copolymer, sodium acrylic acid / sulfonic acid monomer copolymer, acrylamide / dimethylaminoethyl methacrylate dimethyl sulfate copolymer, acrylamide / sodium acrylate copolymer , Polyethylene glycol, polypropylene glycol, superabsorbent resin (SAP), carboxymethylcellulose (CMC), CMC derivative, carrageenan, carrageenan derivative, xanthan gum, xanthan gum derivative, pectin, pectin derivative, starch, starch It further comprises at least one second phase separation inhibitor selected from the group consisting of derivatives, konjac, agar, layered silicates, and composites of these
  • a heat storage system for cooling and heating a building according to a ninth aspect of the present invention includes a heat storage material module using the heat storage material composition according to any one of the first to eighth aspects.
  • the heat storage material composition according to the present embodiment includes a main agent composed of sodium sulfate decahydrate, disodium hydrogen phosphate decahydrate, and trisodium phosphate decahydrate.
  • the main ingredients are sodium sulfate decahydrate (Na 2 SO 4 .10H 2 O), disodium hydrogen phosphate dodecahydrate (Na 2 HPO 4 .12H 2 O), and trisodium phosphate decahydrate ( Na 3 PO 4 .12H 2 O).
  • the main agent contains a predetermined amount of sodium sulfate decahydrate, disodium hydrogenphosphate dodecahydrate, and trisodium phosphate decahydrate.
  • the amount of each substance in the main agent is defined based on the mass of the main agent, which is a mixture of sodium sulfate decahydrate, disodium hydrogen phosphate decahydrate, and trisodium phosphate decahydrate.
  • the heat storage material composition according to the present embodiment can be composed of only the main agent, but may further include surplus water as necessary.
  • the heat storage material composition containing surplus water in addition to the main agent will be described later.
  • sodium sulfate decahydrate is usually contained in an amount of 17.9 to 32.5% by mass in 100% by mass of the main agent.
  • the heat storage material composition has a minimum melting temperature of 20 ° C. or higher and a maximum melting temperature of 30 ° C. or lower, and has a latent heat of fusion of 140 J / g or more.
  • the heat storage amount (latent heat of fusion) of the heat storage material composition ) Is larger.
  • the melting upper limit temperature of the heat storage material composition is increased. Lower.
  • ⁇ Disodium hydrogen phosphate dodecahydrate in the main agent 32.5 to 55.0% by mass of disodium hydrogen phosphate dodecahydrate is usually contained in 100% by mass of the main agent.
  • the heat storage material composition has a minimum melting temperature of 20 ° C or higher and a maximum melting temperature of 30 ° C or lower, and has a latent heat of fusion of 140 J / g or higher. become.
  • the heat storage amount of the heat storage material composition (Latent heat of fusion).
  • the heat storage material composition according to the present embodiment when 32.5 to 45% by mass of disodium hydrogen phosphate dodecahydrate is preferably contained in 100% by mass of the base material, the melting of the heat storage material composition The maximum temperature becomes lower.
  • trisodium phosphate dodecahydrate in the main ingredient is usually contained in an amount of 15 to 40.5% by mass in 100% by mass of the main agent.
  • the lower limit temperature of melting of the heat storage material composition is 20 ° C. or more and the upper limit temperature of melting is 30 ° C. or less, and the latent heat of fusion becomes 140 J / g or more.
  • the heat storage amount of the heat storage material composition when 100% by mass of the main ingredient contains preferably 17.5 to 30% by mass of trisodium phosphate dodecahydrate, the heat storage amount of the heat storage material composition (melting) (Latent heat).
  • the sodium dodecaphosphate 12 hydrate when preferably contained in an amount of 25 to 40.5% by mass in 100% by mass of the base material, the upper limit of melting of the heat storage material composition. The temperature will be lower.
  • the heat storage material composition preferably, 17.9 to 32.5% by mass of sodium sulfate decahydrate and 32.3% by mass of disodium hydrogen phosphate dodecahydrate are contained in 100% by mass of the main agent. It contains 5 to 55.0% by mass and 15 to 40.5% by mass of trisodium phosphate dodecahydrate.
  • the heat storage material composition has a minimum melting temperature of 20 ° C or higher and a maximum melting temperature of 30 ° C or lower, and has a latent heat of fusion of 140 J / g. That is all.
  • X, Y, and Z in the main agent satisfy the following formulas (1) to (4).
  • X, Y, and Z represent the content of sodium sulfate decahydrate in the main ingredient as X mass%, the content of disodium hydrogenphosphate dodecahydrate in the main agent as Y mass%, and the triphosphate content.
  • the content of sodium dodecahydrate is defined as Z mass%.
  • FIG. 3 is a ternary phase diagram showing a preferable range of the content of sodium sulfate decahydrate, disodium hydrogenphosphate decahydrate, and trisodium phosphate decahydrate in the main ingredient.
  • the trapezoid R shown in FIG. 3 and the inside thereof are in a range satisfying the above equations (1) to (4).
  • the heat storage material composition when the above X, Y, and Z satisfy the following formulas (1) to (4), the heat storage material composition has a minimum melting temperature of 20 ° C. or higher and a maximum melting temperature of 30 ° C. ° C or lower, and the latent heat of fusion becomes 140 J / g or more.
  • the heat storage material composition according to the present embodiment may further include surplus water as needed.
  • a mixture composed of a main agent and excess water is defined as a main agent mixture.
  • the surplus water is usually contained in an amount of 9 parts by mass or less, preferably 3 parts by mass or less based on 100 parts by mass of the main agent.
  • the lower limit temperature of melting of the heat storage material composition is 20 ° C. or higher and the upper limit temperature of melting is 30 ° C. or lower, and the latent heat of fusion is 140 J / G or more.
  • the heat storage amount of the heat storage material composition may be small.
  • the heat storage material composition according to this embodiment may include an anhydrous salt such as Na 2 SO 4 in addition to the main agent.
  • the heat storage material composition according to the present embodiment further include a specific first phase separation inhibitor because the main agent is stored under moisture retention.
  • the specific first phase separation inhibitor is obtained by polymerizing a specific monomer and a polyfunctional monomer.
  • Specific monomers include organic unsaturated carboxylic acids, organic unsaturated sulfonic acids, organic unsaturated phosphoric acids, organic unsaturated amides, organic unsaturated alcohols, organic unsaturated carboxylate salts, organic unsaturated sulfonic acid salts, And at least one monomer selected from the group consisting of organic unsaturated phosphates.
  • organic unsaturated carboxylic acid for example, one or more unsaturated carboxylic acids selected from the group consisting of acrylic acid, methacrylic acid and itaconic acid are used, and acrylic acid is preferably used.
  • organic unsaturated sulfonic acid examples include one or more selected from the group consisting of 2-acrylamido-2-methylpropanesulfonic acid, p-styrenesulfonic acid, sulfoethylmethacrylate, allylsulfonic acid and methallylsulfonic acid.
  • Organic unsaturated sulfonic acids are used.
  • organic unsaturated carboxylate for example, an alkali metal salt or an ammonium salt of the above unsaturated carboxylic acid is used.
  • alkali metal salt of the unsaturated carboxylic acid for example, a sodium salt of the unsaturated carboxylic acid is used.
  • sodium salt of the unsaturated carboxylic acid sodium acrylate and sodium methacrylate are preferably used.
  • organic unsaturated sulfonic acid salt for example, an alkali metal salt or an ammonium salt of the above organic unsaturated sulfonic acid is used.
  • alkali metal salt of the organic unsaturated sulfonic acid for example, the sodium salt of the organic unsaturated sulfonic acid is used.
  • the polyfunctional monomer crosslinks a polymer obtained by polymerizing a specific monomer.
  • the polyfunctional monomer include N, N'-methylenebisacrylamide, N, N'-methylenebismethacrylamide, N, N'-dimethylenebisacrylamide, N, N'-dimethylenebismethacrylamide And N, N'-methylenebisacrylamide or N, N'-methylenebismethacrylamide is preferably used.
  • the heat storage material composition according to the present embodiment further include a specific melting point depressant because the melting point of the base material is lowered.
  • the melting point depressant include at least one melting point selected from the group consisting of sodium chloride, potassium chloride, sodium nitrate, sodium bromide, ammonium chloride, ammonium bromide, ammonium sulfate, ammonium nitrate, ammonium phosphate, and urea. A depressant is used.
  • the heat storage material composition according to the present embodiment further include a specific supercooling inhibitor because the supercooling of the main agent is suppressed.
  • the supercooling inhibitor for example, borax Na 2 B 4 O 5 (OH ) 4 ⁇ 8H 2 O, calcium hydroxide, barium hydroxide, strontium hydroxide, aluminum hydroxide, graphite, aluminum, titanium dioxide, Hecht Wright, smectite clay, bentonite, laponite, propylene glycol, ethylene glycol, glycerin, ethylenediaminetetraacetic acid, sodium alkyl sulfate, sodium alkyl phosphate, potassium alkyl sulfate, and at least one selected from the group consisting of potassium alkyl phosphate A supercooling inhibitor is used.
  • the heat storage material composition according to the present embodiment further include a specific second phase separation inhibitor, because phase separation of the main agent is suppressed.
  • the second phase separation inhibitor include sodium silicate, water glass, polyacrylic acid, sodium polyacrylate, polycarboxylate polyether polymer, acrylic acid / maleic acid copolymer sodium, acrylic acid / sulfonic acid -Based monomer copolymer sodium, acrylamide / dimethylaminoethyl methacrylate dimethyl sulfate copolymer, acrylamide / sodium acrylate copolymer, polyethylene glycol, polypropylene glycol, superabsorbent resin (SAP), carboxymethylcellulose (CMC), CMC , Carrageenan, carrageenan derivatives, xanthan gum, xanthan gum derivatives, pectin, pectin derivatives, starch, starch derivatives, konjac, agar, layered silicates, and composite
  • the heat storage material composition according to this embodiment has a melting lower limit temperature of 20 ° C. or higher and a melting upper limit temperature of 30 ° C. or lower, and melts in a temperature range suitable as a latent heat storage material composition for a heat storage system for cooling and heating a building.
  • the heat storage material composition according to the present embodiment is suitable as a latent heat storage material composition for a heat storage system for cooling and heating a building.
  • the heat storage material composition according to the present embodiment has a maximum melting temperature of 30 ° C or lower, preferably 28 ° C or higher and 30 ° C or lower, more preferably 28 ° C or higher and lower than 30 ° C, and still more preferably 28 ° C or higher and lower than 29 ° C. . Since the heat storage material composition according to the present embodiment has a maximum melting temperature within the above numerical range, the heat storage material composition develops latent heat of fusion in a temperature range suitable as a latent heat storage material composition for a heat storage system for cooling and heating a building. Therefore, the heat storage material composition according to the present embodiment is suitable as a latent heat storage material composition for a heat storage system for cooling and heating a building.
  • the heat storage material composition according to the present embodiment has a melting temperature range of 7.0 ° C. or less, preferably 5.0 ° C. or less, more preferably 4.6 ° C. or less, which is a difference between the upper melting limit temperature and the lower melting limit temperature. , Preferably 4.0 ° C or lower.
  • the heat storage material composition according to the present embodiment has a melting temperature range within the above numerical range and a small temperature range between melting and solidification, so that the change between melting and solidifying is performed quickly. Therefore, the heat storage material composition according to the present embodiment is suitable as a latent heat storage material composition for a heat storage system for cooling and heating a building.
  • the heat storage material composition according to this embodiment has a latent heat of fusion of 140 J / g or more, preferably 140 to 210 J / g, more preferably 150 to 210 J / g, and still more preferably 160 to 210 J / g. Further, the heat storage material composition according to the present embodiment has a latent heat of fusion of preferably 170 to 210 J / g, and more preferably 180 to 210 J / g.
  • the latent heat of fusion of the heat storage material composition according to the present embodiment is sufficiently high as a latent heat storage material composition of a heat storage system for cooling and heating a building because the latent heat of fusion is within the above numerical range. Therefore, the heat storage material composition according to the present embodiment is suitable as a latent heat storage material composition for a heat storage system for cooling and heating a building.
  • a heat storage material composition having a minimum melting temperature of 20 ° C. or higher and a maximum melting temperature of 30 ° C. or lower and a latent heat of fusion of 140 J / g or more can be obtained.
  • the heat storage system for cooling and heating a building according to the present embodiment includes a heat storage material module using the heat storage material composition according to the present embodiment.
  • Heat storage material module for example, a heat storage material pack formed by filling the heat storage material composition into a container having a sufficient hermeticity, and a single or a plurality of the heat storage material packs are stacked, and an appropriate flow path is provided. Modularized ones are used. Examples of the container used for the heat storage material pack include an aluminum pack formed by heat-welding an aluminum pack sheet formed by laminating a resin sheet on an aluminum sheet.
  • the heat storage material module is installed on at least a part of a floor surface, a wall surface, and a ceiling surface that divide a space in a building.
  • the heat storage material module installed in this manner is stored (cooled) by heat exchange between the module surface and the atmosphere ventilating the module surface, solar heat by solar radiation, an air-conditioning system using night power, and the like.
  • the heat storage material composition in the heat storage material module is melted by the heat obtained from the space in the building, and the enthalpy of that heat is retained inside the heat storage material composition.
  • the heat storage material composition that has melted solidifies and releases heat to the space in the building.
  • the energy load for cooling and heating can be reduced by the action of melting and solidifying the heat storage material composition.
  • heat is stored (cooled) by the heat exchange between the surface of the module and the atmosphere ventilating the surface of the module, the solar radiation by solar radiation, the air conditioning system using nighttime electric power, and the like. Energy load can be reduced.
  • Example 1 (Preparation of heat storage material composition)
  • anhydrous Na 2 SO 4 (special grade, manufactured by Kishida Chemical Co., Ltd.), anhydrous Na 2 HPO 4 (special grade, manufactured by Kishida Chemical Co., Ltd.), and anhydrous Na 3 PO 4 salt (special grade)
  • a predetermined amount was mixed with pure water (Chemical Co., Ltd.) and pure water to a total amount of about 5 g.
  • the amounts of anhydrous Na 2 SO 4, anhydrous Na 2 HPO 4, anhydrous Na 3 PO 4, and pure water were mixed in amounts such that the composition of the heat storage material composition obtained was as shown in Table 1. did.
  • the obtained mixture was decocted at 50 ° C.
  • a heat storage material composition was obtained (Sample No. A15).
  • This heat storage material composition was substantially composed of only the main agent except that it contained a trace amount of surplus water.
  • Table 1 shows the surplus water content.
  • the presence or absence of formation of a precipitate during the preparation of the heat storage material composition was examined.
  • the formation of a precipitate during the preparation of the heat storage material composition is an index indicating that the characteristic stability of the heat storage material composition when solidification and melting are repeated is low.
  • Sample No. In the heat storage material composition of A15 no precipitate was formed. Table 1 shows the results.
  • FIG. 2 is a graph schematically showing the results of measuring the lower melting temperature Ts and the upper melting temperature Tf at which the latent heat storage material composition develops latent heat of fusion using differential scanning calorimetry (DSC).
  • DSC differential scanning calorimetry
  • the melting minimum temperature Ts was defined as the intersection of the base straight line in the DSC curve and the straight line extending the slope at the inflection point of the DSC curve in which the heat flow first decreased.
  • the melting upper limit temperature Tf was defined as the intersection of a straight line obtained by extending the slope at the inflection point of the DSC curve immediately before the heat flow was restored to the base, and the base straight line in the DSC curve.
  • the latent heat of fusion was calculated from the peak area of the endothermic peak in the DSC curve. Table 1 shows the results.
  • Examples 2 to 28, Comparative Examples 1 to 16 The amounts of Na 2 SO 4 anhydrous salt, Na 2 HPO 4 anhydrous salt, Na 3 PO 4 anhydrous salt, and the amount of pure water were changed so that the obtained heat storage material composition had the composition shown in Table 1 or Table 2. Except for the above, heat storage material compositions were obtained in the same manner as in Example 1 (Sample Nos. A1 to A14, A16 to A44). Sample No. A1 to A14 are the heat storage material compositions of Comparative Examples 1 to 14, respectively. A16 to A42 are the heat storage material compositions of Examples 2 to 28, respectively, and Sample Nos. A43 and A44 are the heat storage material compositions of Comparative Examples 15 and 16, respectively.
  • FIG. 3 is a ternary phase diagram showing a preferable range of the content of sodium sulfate decahydrate, disodium hydrogenphosphate decahydrate, and trisodium phosphate decahydrate in the base material.
  • Sample No. The compositions of the main components of the heat storage material compositions of A1 to A42 are plotted in FIG. In FIG.
  • the plots of the heat storage material compositions of A15 to A42 are indicated by the symbol ⁇ .
  • FIG. This is a region where the main components of the heat storage material compositions of A15 to A42 (Examples 1 to 28) are present.
  • the content of sodium sulfate decahydrate is X mass%
  • the content of disodium hydrogen phosphate dodecahydrate is Y mass%
  • the content of trisodium phosphate decahydrate is Z mass. %
  • the heat storage material compositions of Examples 1 to 28 (Sample Nos. A15 to A42) in the region R satisfying the above formulas (1) to (4) are preferable as the heat storage material compositions.
  • the heat storage material compositions of Examples 1 to 28 (Sample Nos. A15 to A42) have a minimum melting temperature of 20 ° C. or higher and a maximum melting temperature of 30 ° C. or lower, and have a latent heat of fusion of 140 J / g or higher. I understood.
  • the heat storage material composition has a minimum melting temperature of 20 ° C. or higher and a maximum melting temperature of 30 ° C. or lower, and has a latent heat of fusion of 140 J / g or higher, and for cooling and heating buildings.
  • Heat storage system can be provided.

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  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Central Heating Systems (AREA)

Abstract

La présente invention concerne une composition de matériau de stockage de chaleur contenant un agent principal comprenant du sulfate de sodium décahydraté, de l'hydrogénophosphate disodique dodécahydraté et du phosphate trisodique dodécahydraté, ayant un point de fusion de limite inférieure égal ou supérieur à 20 °C et un point de fusion de limite inférieur ou égal à 30 °C, et ayant une chaleur latente de fusion de 140 J/g ou plus. Ladite composition de matériau de stockage de chaleur contient de préférence, dans 100 % de l'agent principal, 17,9 à 32,5 % en masse de sulfate de sodium décahydraté, 32,5 à 55,0 % en masse d'hydrogénophosphate disodique dodécahydraté et 15 à 40,5 % en masse de phosphate trisodique dodécahydraté.
PCT/JP2019/027736 2018-08-10 2019-07-12 Composition de matériau de stockage de chaleur et système de stockage de chaleur pour le conditionnement d'air d'un bâtiment Ceased WO2020031618A1 (fr)

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JP2021147509A (ja) * 2020-03-19 2021-09-27 矢崎総業株式会社 蓄熱材組成物及び建築物の冷暖房用の蓄熱システム
CN114574165A (zh) * 2022-03-18 2022-06-03 长沙理工大学 一种相变储冷材料及其制备方法

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CN115136197B (zh) 2020-02-19 2025-12-23 本田技研工业株式会社 信息取得装置、信息取得方法以及记录介质
CN112048287B (zh) * 2020-09-17 2022-04-15 陕西合鼎森新智能科技有限公司 环保型的制冷剂及其冷敷包、饮料罐

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JPS57137379A (en) * 1981-01-15 1982-08-24 Hoechst Ag Latent heat storing device and manufacture
JPH0525467A (ja) * 1991-01-31 1993-02-02 Sumitomo Chem Co Ltd 蓄熱材組成物及びその製造方法
JPH0885785A (ja) * 1994-07-20 1996-04-02 Sumitomo Chem Co Ltd 潜熱蓄熱材組成物の過冷却防止方法および潜熱蓄熱装置
CN102827588A (zh) * 2012-09-19 2012-12-19 杨宁 一种节能控温相变材料
JP2015218212A (ja) * 2014-05-15 2015-12-07 株式会社ネギシ 新規な潜熱蓄熱材組成物
WO2017164304A1 (fr) * 2016-03-23 2017-09-28 株式会社カネカ Composition de matériau de stockage de chaleur et son utilisation

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JPS57137379A (en) * 1981-01-15 1982-08-24 Hoechst Ag Latent heat storing device and manufacture
JPH0525467A (ja) * 1991-01-31 1993-02-02 Sumitomo Chem Co Ltd 蓄熱材組成物及びその製造方法
JPH0885785A (ja) * 1994-07-20 1996-04-02 Sumitomo Chem Co Ltd 潜熱蓄熱材組成物の過冷却防止方法および潜熱蓄熱装置
CN102827588A (zh) * 2012-09-19 2012-12-19 杨宁 一种节能控温相变材料
JP2015218212A (ja) * 2014-05-15 2015-12-07 株式会社ネギシ 新規な潜熱蓄熱材組成物
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JP2021147509A (ja) * 2020-03-19 2021-09-27 矢崎総業株式会社 蓄熱材組成物及び建築物の冷暖房用の蓄熱システム
CN114574165A (zh) * 2022-03-18 2022-06-03 长沙理工大学 一种相变储冷材料及其制备方法
CN114574165B (zh) * 2022-03-18 2024-05-28 长沙理工大学 一种相变储冷材料及其制备方法

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