WO2019097885A1 - Élément d'échange de chaleur totale et échangeur de chaleur totale - Google Patents

Élément d'échange de chaleur totale et échangeur de chaleur totale Download PDF

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Publication number
WO2019097885A1
WO2019097885A1 PCT/JP2018/037232 JP2018037232W WO2019097885A1 WO 2019097885 A1 WO2019097885 A1 WO 2019097885A1 JP 2018037232 W JP2018037232 W JP 2018037232W WO 2019097885 A1 WO2019097885 A1 WO 2019097885A1
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Prior art keywords
total heat
chitosan
partition plate
heat exchange
fiber layer
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PCT/JP2018/037232
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English (en)
Japanese (ja)
Inventor
佑 泉谷
鴇崎　晋也
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三菱電機株式会社
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Priority to JP2019523140A priority Critical patent/JP6636217B2/ja
Publication of WO2019097885A1 publication Critical patent/WO2019097885A1/fr

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/28—Organic non-cellulose fibres from natural polymers
    • D21H13/30—Non-cellulose polysaccharides
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
    • D21H17/57—Polyureas; Polyurethanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning

Definitions

  • the present invention relates to a total heat exchange element and a total heat exchanger which are used in an air conditioner, a ventilator, etc., and exchange sensible heat (temperature) and latent heat (humidity) between two air streams different in temperature and humidity.
  • a method of producing a partition plate using fine cellulose fiber is also proposed as a method of making the partition plate of all heat exchange elements moisture-proof (see, for example, Patent Document 2).
  • the partition plate in which the hygroscopic substance is impregnated or coated in the polymeric porous member has a weak holding power of the hygroscopic substance, so the hygroscopic substance is easily lost by condensation etc., and the moisture permeability of the partition is maintained for a long time Can not do it. As a result, there is a problem that the total heat exchange efficiency is gradually reduced.
  • the present invention has been made to solve the problems as described above, and it is an object of the present invention to provide a total heat exchange element capable of maintaining high total heat exchange efficiency over a long period of time even in an environment prone to condensation. To aim.
  • the first flow passage through which the first air flow can flow, the second flow passage through which the second air flow can flow, and the first flow passage and the second flow passage are separated.
  • a partition plate for exchanging sensible heat and latent heat between the first air flow and the second air flow, and the partition plate is constituted of the non-water-soluble porous base material layer and the fiber layer, and the fiber layer is And a fibrous chitosan derivative and a binder resin, wherein the fibrous chitosan derivative is formed into a fibrous chitosan via an alicyclic bond, an alicyclic carboxylic acid compound, an aromatic carboxylic acid compound and an alkyl chain having a carbon number It is a molecular structure modified with at least one carboxylic acid compound selected from the group of aliphatic carboxylic acid compounds of 7 or less.
  • the present invention relates to a fibrous chitosan derivative contained in a fibrous layer, an alicyclic carboxylic acid compound, an aromatic carboxylic acid compound, and a fatty acid having an alkyl chain length of 7 or less carbon atoms through an amide bond to fibrous chitosan Since the molecular structure is modified with at least one carboxylic acid compound selected from the group of carboxylic acid compounds, high total heat exchange efficiency can be maintained for a long time even in an environment in which condensation easily occurs.
  • FIG. 1 is a perspective view of a total heat exchange element in Embodiment 1 for carrying out the present invention.
  • the total heat exchange element 10 has a partition plate 1 and a spacer plate 2 for holding the gap between the partition plates 1, and the partition plate 1 and the spacer plate 2 are bonded by an adhesive 3 or the like.
  • the spacer plate 2 is in the form of a corrugated sheet having a corrugated cross section.
  • the first flow path 4 and the second flow path 5 orthogonal to the first flow path 4 are formed by the partition plate 1 and the space plate 2, and the first flow path 4 Latent heat and sensible heat are exchanged via the partition plate 1 between the first air flow 6 flowing through the second flow path 5 and the second air flow 7 flowing through the second flow path 5.
  • the air supply flow of the first air flow 6 flowing through the first flow path 4 and the second air flow flowing through the second flow path 5 Latent heat and sensible heat are exchanged via the partition plate 1 with the exhaust gas flow of 7.
  • the partition plate 1 the non-water-soluble porous base material layer, and the fiber layer are included.
  • the fiber layer contains fibrous chitosan derivative and binder resin.
  • the partition plate 1 configured in this way has the property of passing water vapor but not passing air (hereinafter referred to as "moisture permeability"), the charge air flow (first air flow 6) and the exhaust flow (second air flow 7). It has isolated properties (hereinafter referred to as “gas shielding properties”), and high overall heat exchange efficiency can be obtained.
  • the spacer plate 2 may be any as long as it can maintain the distance between the partition plates 1 at a predetermined distance and can form a flow path.
  • the spacer plate 2 may be a sheet bent in a short wave shape or triangular wave shape, or a combination of a plurality of plate pieces.
  • the non-water-soluble porous substrate layer plays a role of maintaining the strength of the partition plate 1.
  • the non-water-soluble porous base material layer is non-water-soluble, deterioration due to condensation water can be prevented even in an environment in which condensation easily occurs, and the moisture permeability and gas shielding properties of the partition plate 1 are maintained.
  • water insoluble means that the solubility in water at 25 ° C. is less than 0.5 g / 100 g.
  • non-water-soluble porous base material layer examples include a porous resin base material layer and a porous glass base material layer.
  • non-woven fabric, woven fabric, knitted fabric, etc. formed from water-insoluble fibers such as resin fibers and glass fibers can be used.
  • non-woven fabrics are preferable in terms of cost.
  • the spacing between the fibers can be easily coarsened and widely adjusted, and the function of exchanging latent heat and sensible heat by the chitosan derivative fiber layer (hereinafter referred to as "total heat exchange efficiency") It does not inhibit.
  • non-water-soluble porous substrate layer examples include polyamides such as aramid or nylon (registered trademark), polyesters, polyethylenes, polypropylenes, polycarbonates, polyethylene terephthalates, celluloses, resins such as polyolefins and rayon, and glass.
  • polyester is preferable in terms of cost.
  • the weight per unit area of the water-insoluble porous base material layer is preferably 5 g / m 2 or more and 100 g / m 2 or less, more preferably 10 g / m 2 or more and 30 g / m 2 or less, still more preferably 12 g / m 2 or more and 20 g / m 2 m 2 or less.
  • the weight per unit area of the water-insoluble porous base material layer is 5 g / m 2 or more, the strength necessary for the partition plate 1 can be obtained.
  • the weight per unit area of the water-insoluble porous base material layer is less than 100 g / m 2 , the moisture permeable area in the fiber layer can be secured.
  • the thickness of the water-insoluble porous substrate layer is preferably 2 ⁇ m to 500 ⁇ m, more preferably 10 ⁇ m to 200 ⁇ m, and still more preferably 80 ⁇ m to 150 ⁇ m to 50 ⁇ m.
  • the thickness of the water-insoluble porous base material layer is 2 ⁇ m or more, the strength necessary for the partition plate 1 can be obtained.
  • the thickness of the non-water-soluble porous substrate layer is less than 500 ⁇ m, the moisture permeability can be secured.
  • the air permeability of the water-insoluble porous base material layer is preferably 1 second or less (less than the measurement limit).
  • air permeability means the air permeability measured according to JIS P8117.
  • the air permeability of the non-water-soluble porous base material layer is the time (seconds) in which 100 cm 3 (100 mL) of air permeates through the base (non-water-soluble porous base material layer) having an area of 645 mm 2 Can be obtained by measuring. If the air permeability of the non-water-soluble porous base material layer is 1 second or less, the moisture permeability can be secured.
  • Nonwoven fabrics can be produced by a lace method, a steam jet method or the like.
  • spun bond method, melt blow method, a thermal bond method or a steam jet method a small amount of fibers can be used to produce a nonwoven fabric excellent in strength, durability and air permeability.
  • nylon (registered trademark) fibers As fibers used for the non-woven fabric, nylon (registered trademark) fibers, polyester fibers, or core-sheath structured fibers in which the sheath portion is made of an olefin resin or the core portion is made of polyester are preferable from the viewpoint of durability and cost.
  • the core-sheath structure fiber described above is more preferable from the viewpoint of ease of formation and dimensional stability when laminated with a fiber layer to form a partition plate.
  • non-water-soluble porous base material layer may be manufactured by said method, it is also possible to use a commercial item.
  • Chitosan or chitin which is a raw material of chitosan derivatives, is an organic compound obtained by decalcification and deproteinization by treating the exoskeleton of crustaceans or insects, cartilage of squid, etc. with hydrochloric acid and caustic soda. Heating chitin to a concentrated alkali deacetylates to give chitosan with free amino groups.
  • the deacetylation degree of deacetylated chitin can be easily controlled by appropriately changing the concentration of alkali used, the treatment temperature, the treatment time, and the like in the deacetylation step.
  • chitin having a degree of deacetylation of 50% or less is referred to as chitin and one having a degree of deacetylation of 50% or more is sometimes referred to as chitosan.
  • chitin that is deacetylated will be referred to as chitosan.
  • the degree of deacetylation means the value measured by the method shown below.
  • the degree of deacetylation can be determined by the following formula: A (%).
  • a (%) [(2.03 ⁇ f ⁇ b ⁇ 10 ⁇ 2 ) / (a + 0.055 ⁇ f ⁇ b ⁇ 10 ⁇ 2 )] ⁇ 100
  • a is the weight of the sample (g)
  • f is the titer of 0.1 M aqueous sodium hydroxide solution
  • b is the titer (mL) of 0.1 M aqueous sodium hydroxide solution.
  • the fibrous chitosan used as the basis of the fibrous chitosan derivative used in the present embodiment has shapes such as chitosan long fibers, short fibers obtained by cutting long fibers, and fibrils.
  • fibril means an assembly of fibers.
  • chitosan fibrils which are fibrillar chitosan, are preferable in terms of cost and quality control.
  • the fibrous chitosan derivative used in the present embodiment is obtained from fibrous chitosan as described above, but the chitosan obtained by the above-mentioned deacetylation treatment is powdery. Next, the method for producing fibrous chitosan will be described.
  • the chitosan powder obtained by the above-mentioned deacetylation treatment is dissolved in a mixed solution of trichloroacetic acid and a halogenated hydrocarbon, a solvent such as N-methylpyrrolidone, etc. Make.
  • fibrous chitosan can be manufactured by discharging in a coagulating liquid from a nozzle and making it coagulate.
  • the coagulating liquid water, methanol, ethanol, butanol, acetone, methyl ethyl ketone and the like can be mentioned.
  • the coagulated fiber may be taken up by a winder or the like, washed to sufficiently remove the solvent, and then dried.
  • the chitosan long fibers thus obtained can be made into short fibers by cutting them into a predetermined length.
  • chitosan fibrils When producing chitosan fibrils, it can be produced by stirring and mixing a mixture of chitosan powder and water at high speed and coagulating and washing. At this time, it is preferable to use a device capable of applying a strong shearing force such as a high pressure homogenizer, an ultra high pressure homogenizer, a grinder, etc., as the stirring and mixing.
  • a device capable of applying a strong shearing force such as a high pressure homogenizer, an ultra high pressure homogenizer, a grinder, etc.
  • fibrous chitosan can be produced by the method described above, but commercial products can also be used.
  • BiNFi-s (bin fiss) series made by Sugino Machine Co., Ltd. is mentioned.
  • the average fiber diameter of fibrous chitosan is preferably 4 nm or more and 500 nm or less, more preferably 10 nm or more and 50 nm or less.
  • the "average fiber diameter” means an average value of fiber diameters (20 or more) measured by microscopic observation using a scanning electron microscope (SEM) or the like. If the average fiber diameter of fibrous chitosan is 4 nm or more, the fibers are entangled with each other and film forming property is good. In addition, when the average fiber diameter of fibrous chitosan is 500 nm or less, intermolecular force between fibers works effectively, and the film strength is good.
  • a chitosan derivative having a structure in which the amino group at the 2-position of the glucosamine unit of chitosan is modified via an amide bond can be used.
  • a structure modified with at least one carboxylic acid compound selected from the group of alicyclic carboxylic acid compounds, aromatic carboxylic acid compounds and aliphatic carboxylic acid compounds having an alkyl chain length of 7 or less carbon atoms Is preferred.
  • fibrous chitosan derivatives fibrous chitin having an equivalent structure is used instead of the chitosan derivative in the case of reacting acetic acid, which is an aliphatic carboxylic acid compound having 2 carbon atoms, with fibrous chitosan. May be
  • fibrous chitin can also be manufactured by the method similar to fibrous chitosan, it is also possible to use a commercial item.
  • BiNFi-s (bin fiss) series made by Sugino Machine Co., Ltd. is mentioned.
  • the average fiber diameter of fibrous chitin is preferably 4 nm or more and 500 nm or less, and more preferably 10 nm or more and 50 nm or less.
  • the "average fiber diameter” means an average value of fiber diameters (20 or more) measured by microscopic observation using a scanning electron microscope (SEM) or the like.
  • SEM scanning electron microscope
  • the average fiber diameter of the fibrous chitin is 4 nm or more, the fibers are entangled with each other and the film forming property is good.
  • the average fiber diameter of fibrous chitin is 500 nm or less, the intermolecular force between fibers works effectively, and the film strength is good.
  • alicyclic carboxylic acid compounds include cyclohexanecarboxylic acid, sodium cyclohexanecarboxylate, 4-methylcyclohexanecarboxylic acid, sodium 4-methylcyclohexanecarboxylate, 4-ethylcyclohexanecarboxylic acid, sodium 4-methylcyclohexanecarboxylate, Examples thereof include 4-butylcyclohexanecarboxylic acid, sodium 4-butylcyclohexanecarboxylate and the like.
  • aromatic carboxylic acid compounds include benzoic acid, sodium benzoate, nicotinic acid, sodium nicotinate, isonicotinic acid, sodium isonicotinate, methylbenzoic acid, sodium methylbenzoate, naphthalenecarboxylic acid, sodium naphthalenecarboxylate And mesitylene acid, mesitylene acid sodium and the like.
  • Examples of aliphatic carboxylic acid compounds having 7 or less carbon atoms include acetic acid, sodium acetate, propionic acid, sodium propionate, butyric acid, sodium butyrate, pentanoic acid, sodium pentanoate, hexanoic acid, sodium hexanoate, heptanoic acid, heptane An acid sodium etc. are mentioned.
  • FIG. 2 shows the molecular structure of a chitosan derivative when sodium nicotinate is used as a carboxylic acid compound.
  • a chitosan derivative whose molecular structure is shown on the right is obtained by modifying sodium nicotinate whose molecular structure is shown on the lower left in the left side of the molecular structure via an amide bond.
  • a method of modifying chitosan with a carboxylic acid compound via such an amide bond a method of activating a carboxylic acid by a reaction with an acid chloride derivative in the presence of a base or N, N'-dicyclohexylcarbodiimide is exemplified.
  • a condensation method by reaction with an organic condensing agent or the like can be used.
  • a binder resin which comprises a fiber layer it is preferable that it is a hydrophilic resin which has hydrophilic groups, such as a hydroxyl group, a carboxyl group, a sulfonic acid group, an amino group, for example.
  • hydrophilic resins include polyvinyl alcohol, cellulose acetate, cellulose nitrate, polyamino acids, polyurethane resins, polyester resins and the like. These can be used alone or in combination of two or more.
  • polyurethane resins for example, ether-based or ester-based polyurethane resins
  • polyester resins are preferable.
  • the ether-based polyurethane resin has high hydrolysis resistance and can produce a long-life partition plate 1 having high moisture permeability.
  • Polyurethane resins can generally be obtained by reacting diisocyanate and diol monomers as raw materials.
  • a raw material a urethane prepolymer may be further used.
  • a polyurethane resin may be manufactured by said method, it is also possible to use a commercial item.
  • a commercial product in the form of a water dispersion of polyurethane resin can be used as a supply source of polyurethane resin.
  • commercially available products include Superflex series manufactured by Daiichi Kogyo Seiyaku Co., Ltd., Adekabontiter HUX series manufactured by ADEKA Co., Ltd., and Yukot series manufactured by Sanyo Chemical Industries, Ltd.
  • polyurethane resin aqueous dispersions such as reactive type and non-reactive type, but these types are not particularly limited.
  • the mass ratio of fibrous chitosan derivative to binder resin is preferably 5 or more and 60 or less, more preferably 10 or more and 50 or less, still more preferably 15 or more and 45 or less It is. If the said mass ratio is 5 or more, moisture permeability will be ensured. Moreover, if the said mass ratio is 60 or less, sufficient intensity
  • a condensing agent may be added to the fiber layer.
  • a condensation reaction between glucosamine and a carboxylic acid component caused by hydrolysis of the chitosan derivative can be caused to suppress hydrolysis of the chitosan derivative.
  • a condensing agent a carbodiimide compound, a polycarbodiimide compound, a triazine type compound etc. are mentioned.
  • polycarbodiimide compounds having water dispersibility or water solubility are preferable.
  • Carbodilite series manufactured by Nisshinbo Chemical Co., Ltd. can be mentioned.
  • additives such as fillers, reinforcing agents, conductive fillers, antistatic agents, antifoaming agents may be added. These can be used alone or in combination of two or more. Moreover, these contents can be suitably adjusted according to a kind.
  • the weight per unit area of the fiber layer is preferably 1 g / m 2 to 15 g / m 2 , more preferably 4 g / m 2 to 7 g / m 2 . If the weight per unit area of the fiber layer is within this range, the moisture permeability and the gas shielding property will be good. When the fabric weight of the fiber layer is 1 g / m 2 or more, a defect hole (pinhole) penetrating in the film thickness direction does not occur, and the air shielding property does not decrease. If the weight per unit area of the fiber layer is 15 g / m 2 or less, the moisture permeation resistance does not decrease.
  • the thickness of the fiber layer is preferably 0.5 to 10 ⁇ m, more preferably 1 to 8 ⁇ m, and still more preferably 3 to 7 ⁇ m. If the thickness of the fiber layer is 0.5 ⁇ m or more, the air shielding property can be secured. Further, if the thickness of the fiber layer is 10 ⁇ m or less, the moisture permeability can be secured.
  • the air permeability of the fiber layer is preferably 5000 seconds or more, more preferably 5500 seconds or more, and still more preferably 6000 seconds or more. If the air permeability of the fiber layer is 5,000 or more, the air shielding property can be secured.
  • FIG. 3 is an explanatory view of a method of manufacturing a partition plate in the present embodiment.
  • a dispersion containing fibrous chitosan and a binder resin is applied onto the releasable substrate 20 and dried by heating (solidified) to form a fiber layer 21.
  • the non-water-soluble porous base material layer 22 is laminated on the fiber layer 21 and heat compression bonding is performed.
  • the releasable substrate 20 is removed, and surface treatment with a carboxylic acid compound is performed to complete the chitosan-derivatized fiber layer 21 and to manufacture a partition plate.
  • the content of chitosan in a dispersion containing fibrous chitosan and a binder resin is preferably 0.5% by mass or more and 5% by mass or less, more preferably 1% by mass or more and 4% by mass or less, still more preferably 1.5% by mass % Or more and 3% by mass or less.
  • the content of the binder resin in this dispersion liquid is preferably 0.01% by mass or more and 1% by mass or less, more preferably 0.02% by mass or more and 0.5% by mass or less, still more preferably 0.03% by mass More than 0.3 mass% or less.
  • water-soluble organic solvents such as dimethylformamide and dimethylformamide can be used as the solvent used for the dispersion.
  • Examples of a method for applying a dispersion containing fibrous chitosan and a binder resin to the releasable substrate 20 include various coaters such as a gravure coater, a kiss coater, a roll knife coater, a comma coater, a rod coater, and a reverse roll coater. It can be used. Besides that, an extrusion apparatus using various dies such as a flat die and a circular die may be used.
  • a polypropylene film, a polyolefin film such as polyethylene, a releasable film such as a polyester film, a releasable paper coated with a silicone resin or a polyolefin resin, or the like can be used.
  • the heating temperature for heating and drying the fiber layer 21 may be appropriately adjusted according to the type of medium used for the dispersion.
  • thermocompression bonding may be appropriately adjusted in accordance with the materials used for the fiber layer 21 and the water-insoluble porous base layer 22.
  • the partition plate 1 comprised from the laminated body of the non-water-soluble porous base material layer 22 and the fiber layer 21 which were comprised in this way is excellent in moisture permeability and gas-shielding property, it has this partition plate 1.
  • the total heat exchange element 10 can maintain high total heat exchange efficiency over a long period of time even in an environment in which condensation easily occurs.
  • FIG. 4 is a schematic view of the total heat exchanger in the second embodiment.
  • the total heat exchanger 30 of the present embodiment includes the total heat exchange element 10 described in the first embodiment.
  • the total heat exchanger 30 shown in FIG. 4 is installed in a house or the like, and is used as a heat exchange type ventilator that exchanges heat between indoor air and outdoor air.
  • an air supply flow path 31 for supplying air outside the room to the room, and exhaust air for discharging the room air outside the room A flow path 32 is formed.
  • the first flow path 4 of the total heat exchange element 10 is included in a part of the air supply flow path 31, and the second flow path 5 of the total heat exchange element 10 is included in a part of the exhaust flow path 32.
  • the air supply flow path 31 is provided with an air supply fan 33 that generates a flow of air from the outside to the room.
  • the exhaust flow path 32 is provided with an exhaust blower 34 for generating a flow of air directed from the room to the outside.
  • the air supply fan 33 and the exhaust air fan 34 operate.
  • the cold and dry outdoor air is passed through the first flow path 4 as a charge air flow (the first air flow 6), and the warm, humid indoor air is the exhaust flow (the second air flow 7) And the second flow path 5.
  • the air flow (two types of air flow) of the charge air flow and the exhaust air flow separates the partition plate 1 and flows. At this time, heat is transmitted between the air flows via the partition plate 1 and water vapor passes through the partition plate 1 to perform heat exchange between sensible heat and latent heat between the charge air flow and the exhaust gas flow.
  • the charge air flow is warmed and humidified to be supplied to the room, and the exhaust flow is cooled and dehumidified to be discharged to the outside. Therefore, by ventilating with the total heat exchanger 30, it is possible to ventilate outdoor and indoor air by suppressing changes in the room temperature and humidity.
  • the total heat exchanger of the present embodiment includes the total heat exchange element 10 described in the first embodiment, so that high total heat exchange efficiency can be maintained over a long period of time even in an environment in which condensation easily occurs. it can.
  • Example 1 2% by mass of chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • a non-woven fabric (T0123 / WGO manufactured by Unitika Co., Ltd.) formed of a polyester fiber coated with polyethylene and having a basis weight of 12 g / m 2 , a thickness of 0.08 mm and an air permeability of 1 second or less
  • the partition plate was produced by removing a mold release film.
  • this partition plate is 0.2 m 2 / L in a 0.2 mol / L aqueous solution of sodium acetate, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide, By soaking at room temperature for 24 hours, the amidation reaction was allowed to proceed to introduce acetic acid into the amino group at position 2 of the glucosamine unit of chitosan.
  • the resultant was immersed in ethanol and washed to remove unreacted sodium acetate, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide.
  • the obtained partition plate was bonded to a spacer plate in which a processed paper with a thickness of 100 ⁇ m to 200 ⁇ m and a width of 35 cm was processed into a corrugated shape, to produce a laminated unit body. Furthermore, after forming the laminated unit body so that the shape of the partition plate becomes a square of 30 cm square, as shown in FIG. 1, a plurality of laminated unit bodies are arranged so that the directions of the wave grooves of the spacer plate are orthogonal to each other. It laminated
  • Example 2 2% by mass of chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • this partition plate is 0.2 m 2 / L in a 0.2 mol / L aqueous solution of sodium propionate, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide.
  • the amidation reaction was allowed to proceed to introduce propionic acid into the amino group at position 2 of the glucosamine unit of chitosan.
  • Example 3 2% by mass of chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • this partition plate is 0.2 m 2 / L in a 0.2 mol / L aqueous solution of sodium butyrate, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide, By soaking at room temperature for 24 hours, the amidation reaction was allowed to proceed to introduce butyric acid into the amino group at position 2 of the glucosamine unit of chitosan.
  • Example 4 2% by mass of chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • this partition plate is prepared by adding 0.2 m 2 / L of sodium pentanoate, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride and 0.2 mol / L aqueous solution of N-hydroxysuccinimide, By soaking at room temperature for 24 hours, the amidation reaction was allowed to proceed to introduce pentanoic acid into the amino group at position 2 of the glucosamine unit of chitosan.
  • Example 5 2% by mass of chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: manufactured by Daiichi Kogyo Seiyaku Co., Ltd. as a supply source Aqueous dispersion containing the above-mentioned Superflex E-2000), and this aqueous dispersion is coated on a PET releasable film with a comma coater and then dried by heating at A chitosan fiber layer of about 3 ⁇ m was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • this partition plate is 0.2 m 2 / L in a 0.2 mol / L aqueous solution of sodium hexanoate, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide, By soaking at room temperature for 24 hours, the amidation reaction was allowed to proceed to introduce hexanoic acid into the amino group at position 2 of the glucosamine unit of chitosan.
  • Example 6 2% by mass of chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • this partition plate is 0.2 m 2 / L in a 0.2 mol / L aqueous solution of sodium heptanoate, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide.
  • the amidation reaction proceeded to introduce heptanoic acid into the amino group at position 2 of the glucosamine unit of chitosan.
  • Example 7 2% by mass of chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: manufactured by Daiichi Kogyo Seiyaku Co., Ltd. as a supply source Aqueous dispersion containing the above-mentioned Superflex E-2000), and this aqueous dispersion is coated on a PET releasable film with a comma coater and then dried by heating at A chitosan fiber layer of about 3 ⁇ m was formed.
  • the formed chitosan fiber layer had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • this partition plate is 0.2 m 2 / L in a 0.2 mol / L aqueous solution of sodium nicotinate, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide, By soaking at room temperature for 24 hours, the amidation reaction was allowed to proceed to introduce nicotinic acid into the amino group at position 2 of the glucosamine unit of chitosan.
  • the resultant was immersed and washed in ethanol to remove unreacted sodium nicotinate, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide.
  • Example 8 2% by mass of chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: manufactured by Daiichi Kogyo Seiyaku Co., Ltd. as a supply source Aqueous dispersion containing the above-mentioned Superflex E-2000), and this aqueous dispersion is coated on a PET releasable film with a comma coater and then dried by heating at A chitosan fiber layer of about 3 ⁇ m was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • Example 9 2% by mass of chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the formed chitosan fiber layer had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • this partition plate is 0.2 m 2 / L in a 0.2 mol / L aqueous solution of sodium benzoate, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide.
  • the amidation reaction was allowed to proceed to introduce benzoic acid into the amino group at position 2 of the glucosamine unit of chitosan.
  • Example 10 2% by mass of chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • Example 2 A chitosan fiber layer having a thickness of about 3 ⁇ m was formed in the same manner as in Example 1 except that the content of the binder resin in the aqueous dispersion was changed to 0.1% by mass, to prepare a partition plate.
  • the chitosan fiber layer thus formed had a basis weight of 4 g / m 2 and an air permeability of 20,000 seconds.
  • Example 3 A chitosan fiber layer having a thickness of about 3 ⁇ m was formed in the same manner as in Example 1 except that an aqueous dispersion containing no binder resin was used, to prepare a partition plate.
  • the formed chitosan fiber layer had a basis weight of 4 g / m 2 and an air permeability of 5,000 seconds.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • this partition plate is 0.2 m 2 / L in a 0.2 mol / L aqueous solution of sodium octanoate, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide.
  • the amidation reaction was allowed to proceed to introduce octanoic acid into the amino group at position 2 of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • this partition plate is 0.1 m 2 / L in a 0.1 mol / L aqueous solution of sodium decanoate, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide.
  • the amidation reaction proceeded to introduce decanoic acid into the amino group at position 2 of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • this partition plate is 0.2 m 2 / L in a 0.2 mol / L aqueous solution of sodium gluconate, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide.
  • the amidation reaction was allowed to proceed to introduce gluconic acid into the amino group at position 2 of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • this partition plate is 0.2 m 2 / L in a 0.2 mol / L aqueous solution of sodium 4-hydroxybenzoate, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide.
  • the amidation reaction proceeded to introduce 4-hydroxybenzoic acid into the amino group at position 2 of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • this partition plate is 0.2 m 2 / L in a 0.2 mol / L aqueous solution of sodium 3-hydroxybenzoate, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide.
  • the reaction of amidation was allowed to proceed by immersion at room temperature for 24 hours at a ratio of to introduce 3-hydroxybenzoic acid into the amino group at position 2 of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • this partition plate is 0.2 m 2 / L in a 0.2 mol / L aqueous solution of sodium glycolate, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide.
  • the amidation reaction was allowed to proceed to introduce glycolic acid into the amino group at position 2 of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • the partition plate was immersed in an ethanol solution of acetaldehyde at room temperature for 24 hours to introduce imine into the amino group at the 2-position of the glucosamine unit of chitosan.
  • Example 11 An aqueous dispersion containing 2% by mass of chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter 20 to 50 nm) was prepared, and Example 1 was used except that this aqueous dispersion was used. Similarly, a chitosan fiber layer having a thickness of about 3 ⁇ m was formed. The formed chitosan fiber layer had a basis weight of 5 g / m 2 and an air permeability of 1000 seconds.
  • the partition plate was immersed in an ethanol solution of propionaldehyde at room temperature for 24 hours to introduce imine into the amino group at the 2-position of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • the partition plate was immersed in an ethanol solution of butanal at room temperature for 24 hours to introduce imine into the amino group at the 2-position of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • partition plate was immersed in an ethanol solution of pentanal at room temperature for 24 hours to introduce imine into the amino group at the 2-position of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • the partition plate was immersed in an ethanol solution of hexanal at room temperature for 24 hours to introduce imine into the amino group at the 2-position of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • the partition plate was immersed in an ethanol solution of heptanal at room temperature for 24 hours to introduce imine into the amino group at the 2-position of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • partition plate was immersed in an ethanol solution of octane aldehyde at room temperature for 24 hours to introduce imine into the amino group at the 2-position of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: manufactured by Daiichi Kogyo Seiyaku Co., Ltd. as a supply source
  • binder resin polyurethane resin: manufactured by Daiichi Kogyo Seiyaku Co., Ltd. as a supply source
  • Aqueous dispersion containing the above-mentioned Superflex E-2000 Aqueous dispersion containing the above-mentioned Superflex E-2000
  • This aqueous dispersion is coated on a PET releasable film with a comma coater and then dried by heating at A chitosan fiber layer of about 3 ⁇ m was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • partition plate was immersed in an ethanol solution of decane aldehyde at room temperature for 24 hours to introduce imine into the amino group at the 2-position of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • the partition plate was immersed in an ethanol solution of dodecane aldehyde at room temperature for 24 hours to introduce an imine into the amino group at position 2 of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 made by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex E made by Ichi Kogyo Seiyaku Co., Ltd.
  • Aqueous dispersion containing (2000-2000) is applied to a PET releasable film with a comma coater, followed by heating and drying at 40 ° C. to obtain chitosan having a thickness of about 3 ⁇ m.
  • a fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • partition plate was immersed in an ethanol solution of benzaldehyde at room temperature for 24 hours to introduce imine into the amino group at the 2-position of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • partition plate was immersed in an ethanol solution of cyclohexane aldehyde at room temperature for 24 hours to introduce an imine into the amino group at the 2-position of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • partition plate was immersed in an ethanol solution of 4-pyridinecarboxaldehyde at room temperature for 24 hours to introduce imine into the amino group at the 2-position of the glucosamine unit of chitosan.
  • chitosan fiber (BiNFi-s EFo-08002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • the aqueous dispersion containing E-2000 is prepared, this aqueous dispersion is applied to a PET releasable film with a comma coater, and dried by heating at 40 ° C. to a thickness of about 3 ⁇ m.
  • a chitosan fiber layer was formed.
  • the chitosan fiber layer formed had a basis weight of 4 g / m 2 and an air permeability of 10,000 seconds.
  • partition plate was immersed in an ethanol solution of 4-hydroxybenzaldehyde at room temperature for 24 hours to introduce imine into the amino group at the 2-position of the glucosamine unit of chitosan.
  • Example 23 An aqueous dispersion containing 2% by mass of cellulose fiber (BiNFi-s WMa-1002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter 20 to 50 nm) was prepared, and Example 1 was used except that this aqueous dispersion was used. Similarly, a cellulose fiber layer having a thickness of about 3 ⁇ m was formed. The formed cellulose fiber layer had a basis weight of 4.5 g / m 2 and an air permeability of 300,000 seconds.
  • cellulose fiber (BiNFi-s WMa-1002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter: 20 to 50 nm) and 0.05% by mass of binder resin (polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • binder resin polyurethane resin: Superflex manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • An aqueous dispersion containing E-2000 was prepared, and a cellulose fiber layer having a thickness of about 3 ⁇ m was formed in the same manner as in Example 1 except that this aqueous dispersion was used.
  • the formed cellulose fiber layer had a basis weight of 4.5 g / m 2 and an air permeability of 300,000 seconds.
  • Example 1 was prepared except that an aqueous dispersion containing 2% by mass of carboxymethylcellulose fiber (BiNFi-s TMa-1002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter 20 to 50 nm) was used, and this aqueous dispersion was used. Similarly to the above, a carboxymethyl cellulose fiber layer having a thickness of about 3 ⁇ m was formed. The formed carboxymethyl cellulose fiber layer had a basis weight of 4 g / m 2 and an air permeability of 300,000 seconds.
  • carboxymethylcellulose fiber BiNFi-s TMa-1002 manufactured by Sugino Machine Co., Ltd .: average fiber diameter 20 to 50 nm
  • TEMPO oxidized cellulose fiber (Deocrystal manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd .: average fiber diameter 4 to 10 nm) was prepared, and in the same manner as in Example 1 except that this aqueous dispersion was used, A TEMPO oxidized cellulose fiber layer of about 3 ⁇ m in thickness was formed.
  • the formed TEMPO oxidized cellulose fiber layer had a basis weight of 4.5 g / m 2 and an air permeability of 300,000 seconds.
  • TEMPO oxidized cellulose fiber (Daiichi Pharmaceutical Co., Ltd. Reocrystal: average fiber diameter 4 to 10 nm) and 0.05% by weight binder resin (polyurethane resin: Superflex E-2000 manufactured by Daiichi Kogyo Seiyaku Co., Ltd.)
  • binder resin polyurethane resin: Superflex E-2000 manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • An aqueous dispersion containing (in use) was prepared, and a TEMPO-oxidized cellulose fiber layer having a thickness of about 3 ⁇ m was formed in the same manner as in Example 1 except that this aqueous dispersion was used.
  • the formed TEMPO oxidized cellulose fiber layer had a basis weight of 4.5 g / m 2 and an air permeability of 300,000 seconds.
  • the chitosan powder was dissolved in a mixed solution of 5% by mass of lithium chloride and 95% by mass of dimethylacetamide to prepare a chitosan solution having a content of 2% by mass of chitosan.
  • this chitosan solution was applied to a PET releasable film with a comma coater, and dried by heating at 150 ° C. to form a chitosan film having a thickness of about 3 ⁇ m.
  • the chitosan film was immersed in water to elute the lithium chloride contained in the chitosan film, and then dried by heating again at 100 ° C.
  • the chitosan film thus formed had a basis weight of 4 g / m 2 and an air permeability of 200 seconds.
  • a non-woven fabric (T0123 / WGO manufactured by Unitika Co., Ltd.) formed of a polyester fiber coated with polyethylene and having a basis weight of 12 g / m 2 , a thickness of 0.08 mm and an air permeability of 1 second or less
  • the partition plate was obtained by removing a mold release film.
  • Table 1 shows a comparison of the configurations of the partition plates produced in Examples 1 to 10
  • Table 2 shows a comparison of the configurations of the partition plates produced in Comparative Examples 1 to 30.
  • Performance evaluation was performed on the partition plates and total heat exchangers obtained in Examples 1 to 10 and Comparative Examples 1 to 30.
  • As the performance evaluation of the partition plate gas shielding property and moisture permeability were evaluated, and as the performance evaluation of the total heat exchanger, temperature exchange efficiency, humidity exchange efficiency, total heat exchange efficiency and condensation resistance were evaluated. Each evaluation method will be described below.
  • the evaluation of the gas shielding properties of the partition plate was performed by measuring the air permeability of the partition plate according to JIS P8117. That is, it calculated
  • the moisture permeability of the partition plate was measured by moisture permeability measurement using an infrared sensor method (Mocon method) under the conditions of relative humidity 100% and temperature 30 ° C. in accordance with JIS K7129. That is, the amount of water vapor transmitted through the test piece was detected by an infrared sensor, and the moisture permeability (water vapor permeability) was calculated from the comparison with the standard test piece. Moreover, the measurement of the moisture permeability of a partition plate was performed in arbitrary five places of a partition plate, and let the average value of the moisture permeability measured at these five places be the moisture permeability of a partition plate.
  • the temperature exchange efficiency, humidity exchange efficiency and total heat exchange efficiency of the total heat exchanger set the conditions of the primary air flow (charge air flow, first air flow) to a temperature of 27 ° C. and a relative humidity of 52.7% RH, and the secondary air flow (exhaust The conditions of the flow and the second air flow were a temperature of 35 ° C. and a relative humidity of 64.3%, and were measured by a method according to the two-chamber method in Annex 4 of JIS B8628.
  • the condensation resistance of the total heat exchanger is measured by measuring the humidity exchange efficiency before and after the condensation test of the total heat exchanger according to the two-chamber method in Annex 4 of JIS B8628, and the measurement results before and after the condensation test was done by comparing. That is, after measuring the humidity exchange efficiency of the total heat exchanger, the dew condensation test of the total heat exchanger was performed, and the humidity exchange efficiency of the total heat exchanger after the condensation test was measured again.
  • the dew condensation test of the total heat exchanger was performed by immersing the total heat exchanger in water and then drying it several times to simulate condensation.
  • Examples 1 to 6 and Comparative Examples 4 to 5 are those which have been chemically modified with aliphatic carboxylic acid compounds having different carbon numbers. In each case, a moisture permeability different from that of Comparative Example 1 not subjected to the chemical modification treatment was obtained. Further, the change in the moisture permeability changes according to the size of the carbon number, and a higher moisture permeability can be obtained by using an aliphatic carboxylic acid compound having a small carbon number.
  • Example 7 to 10 instead of the aliphatic carboxylic acid compound, the chemical modification treatment was performed with an aromatic carboxylic acid compound or an alicyclic carboxylic acid compound. In all cases, higher moisture permeability was obtained as compared to Comparative Example 1 in which the chemical modification treatment was not performed. In addition, it can be seen that the moisture permeability is improved as compared with Examples 1 to 6 in which the chemical modification treatment was performed with the aliphatic carboxylic acid compound.
  • Comparative Examples 6 to 9 the chemical modification treatment was carried out with a carboxylic acid compound having a hydroxyl group in the molecule.
  • a moisture permeability different from that of Comparative Example 1 not subjected to the chemical modification treatment was obtained.
  • the improvement of the moisture permeability was suppressed by the carboxylic acid compound having no hydroxyl group in the molecule, as compared with Examples 1 to 10 in which the chemical modification treatment was performed. From this, it is understood that it is more useful to improve the moisture permeability if the chemical modification treatment is performed using a carboxylic acid compound having no hydroxyl group.
  • Comparative Examples 23 and 24 used cellulose fiber instead of chitosan fiber, and therefore, the moisture permeability of the partition plate, the temperature exchange efficiency of the total heat exchanger, the humidity exchange efficiency, and the total heat exchange efficiency as compared with Examples 1 to 10. Was lowered. Moreover, in Comparative Example 23 which does not contain a binder resin, the condensation resistance was not sufficient as in Comparative Example 3.
  • Comparative Examples 25 and 26 use carboxymethyl cellulose fiber instead of chitosan fiber, and therefore, the moisture permeability of the partition plate, the temperature exchange efficiency of the total heat exchanger, the humidity exchange efficiency, and the total heat exchange as compared with Examples 1 to 10. The efficiency has dropped. Further, in Comparative Example 25 not containing a binder resin, the dew condensation resistance was not sufficient as in Comparative Example 3.
  • Comparative Examples 27 and 28 use TEMPO oxidized cellulose fiber instead of chitosan fiber, and therefore, the moisture permeability of the partition plate, the temperature exchange efficiency of the total heat exchanger, the humidity exchange efficiency, and the total heat as compared with Examples 1 to 10. Exchange efficiency has dropped. Moreover, in Comparative Example 27 which does not contain a binder resin, the condensation resistance was not sufficient as in Comparative Example 3.
  • the partition plate of Examples 1-10 in this Embodiment is comprised by a non-water-soluble porous base material layer and a fiber layer, and a fiber layer is comprised by the fibrous chitosan derivative and binder resin.
  • fibrous chitosan derivatives from the group of alicyclic carboxylic acid compounds, aromatic carboxylic acid compounds and aliphatic carboxylic acid compounds having an alkyl chain length of 7 or less carbon atoms via an amide bond to fibrous chitosan Since the molecular structure is modified with at least one selected carboxylic acid compound, the gas shielding properties and moisture permeability of the partition plate are good.
  • the total heat exchanger provided with the partition plates of Examples 1 to 10 in the present embodiment is excellent in temperature exchange efficiency, humidity exchange efficiency, total heat exchange efficiency and condensation resistance.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Laminated Bodies (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

La présente invention concerne un élément d'échange de chaleur totale (10) dans lequel une plaque de séparation (1) est conçue à partir d'une couche de matériau de base poreux insoluble dans l'eau (22) et d'une couche de fibres (21). La couche de fibre (21) contient un dérivé de chitosane fibreux et une résine liante ; et le dérivé de chitosane fibreux présente une structure moléculaire dans laquelle un chitosane fibreux est modifié, par l'intermédiaire d'une liaison amide, avec au moins un composé d'acide carboxylique qui est choisi dans le groupe constitué de composés d'acide carboxylique alicyclique, de composés d'acide carboxylique aromatique et de composés d'acide carboxylique aliphatique ayant une longueur de chaîne alkyle de 7 atomes de carbone ou moins. Par conséquent, la présente invention permet d'obtenir un élément d'échange de chaleur totale qui est capable de maintenir une efficacité d'échange de chaleur totale élevée pendant une longue période même dans un environnement où la condensation de rosée est susceptible de se produire.
PCT/JP2018/037232 2017-11-16 2018-10-04 Élément d'échange de chaleur totale et échangeur de chaleur totale WO2019097885A1 (fr)

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