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    • 6. 发明专利
    • FUEL CELL SEPARATOR
    • JPH03289057A
    • 1991-12-19
    • JP9033690
    • 1990-04-06
    • HITACHI LTD
    • OGAWA TOSHIOSAWA TOSHIOKURODA OSAMUTAKAHASHI SANKICHISHIMIZU TOSHIODOI RYOTA
    • H01M8/02H01M8/10
    • PURPOSE:To make the falling force by dead weight and wind of concentrated water regularly exceed the adhesive force from surface tension and viscosity to easily break a clog and prevent the clog by specifying the dimensional form of the air channel passage of a separator. CONSTITUTION:In the separator of a fuel cell comprising an electrolytic ion exchange film interposed between both electrodes of a fuel pole for electrochemically oxidizing a fuel material and an oxidizing agent pole for electrochemically reducing an oxidizing agent, passages for supplying the fuel and oxidizing agent to both the poles by conductors provided on the outside thereof, and separators for collecting generated electricity by both the poles adhered and laminated, an air channel flow passage 3-1 is formed into a dimensional form never clogged by concentrated water adhesion. Namely, all or a part of the dimensional form of the air channel passage 3-1 is formed in the range of width 4-12mm, depth 2.5-4mm, and channel top width 2-6mm. Hence, even if concentrated water is adhered to the air supplying channel on the air pole side, and the adhesion quantity is increased to increase the adhesion area, it is fallen by dead weight and wind, so that a clog is never caused, catalytic electrode performance can sufficiently be exhibited by cell lamination, the performance of the cell is enhanced, and stable operation can be held.
    • 9. 发明专利
    • METHOD AND APPARATUS FOR COLD HEAT GENERATION
    • JPH02122170A
    • 1990-05-09
    • JP27195888
    • 1988-10-29
    • HITACHI LTD
    • YAMADA AKIRAOKOCHI ISAOKOSEKI YASUOKUROKAWA HIDEAKIEBARA KATSUYATAKAHASHI SANKICHIONODA TOSHISUKESUGIMOTO SHIGEO
    • F25B25/02F25B15/00
    • PURPOSE:To make an apparatus smaller in size by a method wherein heat storage medium is cooled by the ambient temperature and cold heat is generated by using the evaporation heat of refrigerant as a heat source after the refrigerant, circulating through a closed circuit of a compression type heat pump, is adiabatically expanded. CONSTITUTION:In case a concentration difference type heat storage apparatus 5 is brought in operation for cooling operation, concentrated lithium bromide solution from a heat storage medium storage 7 and from preceding stages is sprayed by spray pipes 561, 562 and 563, and an outdoor unit 9 and first heat exchangers 531, 532 and 533 are connected by pipes 312, 313, 314 and 315. When fleon is circulated by a pump 203 to cool the concentrated lithium bromide solution, the pressure in first compartments 511, 512 and 513 drops. On the other hand, the steam evaporated by third heat exchangers 551, 552 and 553 flows into second compartments 521, 522, and 523 through steam paths 591, 592 and 593, and absorbed by the concentrated lithium bromide solution with heat generation; however, the pressure in the first stage is lowest because the concentration of the lithium bromide solution sprayed by the distributor 561 of the first stage is highest. Therefore, as the concentration of the lithium bromide solution degrades in the order of the first stage, the second stage and third stage, the heat transfer area required can be reduced, resulting in a reduction in size of the apparatus.
    • 10. 发明专利
    • METHOD AND DEVICE FOR GENERATING COLD HEAT
    • JPH0252962A
    • 1990-02-22
    • JP19989288
    • 1988-08-12
    • HITACHI LTD
    • KOSEKI YASUOYAMADA AKIRAKUROKAWA HIDEAKIOKOCHI ISAOEBARA KATSUYATAKAHASHI SANKICHI
    • F25B15/00F25B15/06F25D16/00
    • PURPOSE:To improve cooling capacity by a method wherein, by using a suction cooling type freezer, a cold heat having temperature below a freezing point is generated, ice or ice slurry is generated for heat accumulation. CONSTITUTION:By heating a reproducer 12 by a heating source 20, e.g. combustion gas and steam, and cooling an absorber 11 and a condenser 13 by means of cooling water 21, brine (ethyleneglycol) 22 having temperature below a freezing point is produced from a vaporizer 10. An absorbent (LiBr) 15 is heated by the reproducer 12, a refrigerant (methanol) 14 is vaporized, and the absorbent 15 is concentrated to feed it to the absorber 11. The refrigerant steam 14 is cooled by the condenser 13 to produce liquid, which is fed to the vaporizer 10. As a result of the concentrated absorbent 15 in the absorber 11 being cooled, a pressure in a device is decreased. The reduction of a pressure causes vaporization of the refrigerant 14 in the vaporizer 10 under the same pressure, temperature is reduced to a value below a freezing point, and brine having temperature below a freezing point (approximately -6 deg.C) is produced from the vaporizer 10. Brine having temperature below a freezing point flows through a 3-way valve 33 and enters a heat accumulating tank 2, and water in the tank is indirectly cooled to produce ice.