PDF Publication Title:
Text from PDF Page: 013
US 7,992,397B2 12 AMMONIA/CO2 REFRIGERATION SYSTEM, CO2 BRINE PRODUCTION SYSTEM FOR USE THEREIN,AND AMMONIA COOLING UNIT INCORPORATING THAT PRODUCTION SYSTEM CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Appli cation PCT/JP2004/000122 having an international ?ling date of 9 Jan. 2004, and claims priority under 35 U.S.C. §119(a) to Japanese Application No. JP 2003-391715, ?led on 21 Nov. 2003. The disclosure of the PCT and priority applications,intheirentirety,includingthedraWings,claims, andthespeci?cationthereof,areincorporatedhereinbyref erence. BACKGROUND 20 The present invention relates to a refrigeration system Working on an ammonia refrigerating cycle and CO2 refrig eratingcycle,asystemforproducingCO2 brinetobeused therein, and a refrigerating unit using ammonia as a refriger antandprovidedWiththesystemforproducingCO2brine.25 Speci?cally, the present invention relates to an ammonia refrigeratingcycle,abrinecoolerforcoolingandliquefying CO2 byutiliZingthelatentheatofvaporiZationofammonia, anapparatusforproducingCO2 brinetobeusedforarefrig erationsystemhavingaliquidpumpinasupplylinefor30 supplyingtoarefrigerationloadsidethelique?edCO2 cooled and lique?ed by said brine cooler, and an ammonia refriger atingunitprovidedWithsaidbrineproducingapparatus. Amid strong demand for preventing oZone layer destruc tionandglobalWarmingthesedays,itisimperativeinthe35 ?eld of air conditioning and refrigeration not only to draW back from using CFCs from the vieWpoint of preventing oZone layer destruction, but also to recover alternative com pounds HFCs and to improve energy ef?ciency from the vieWpointofpreventingglobalWarming.Tomeetthe40 demand, utiliZation of natural refrigerant such as ammonia, hydrocarbon, air, carbon dioxide, etc. is being considered, andammonia isbeingusedinmany oflargecooling/refrig erating equipment. The adoption of natural refrigerant also tendstobeincreasingincooling/refrigeratingequipmentof45 smallscale,suchasarefrigeratingstorehouse,goodsdispos ing rooms, and processing rooms, Which are associated With saidlargecooling/refrigeratingequipment. HoWever, as ammonia is toxic, a refrigerating cycle, in WhichanammoniacycleandCO2cyclearecombined,and 50 CO2 isusedasasecondaryrefrigerantinarefrigerationload side, has been adopted in many of ice-making factories, refrigeratingstorehouses,andfoodrefrigeratingfactories.A refrigeration system in Which ammonia cycle and carbon dioxidecyclearecombinedisdisclosed,forexample,in55 Japanese patent No. 3458310. The system is composed as shoWn in FIG. 9(A). In the draWing, the ammonia cycle gaseous ammonia is ?rst compressed by the compressor 104 and iscooledby coolingWaterorairtobe lique?edWhen the ammoniagaspassesthroughthecondenser105.Thelique?ed 60 ammoniaisexpandedattheexpansionvalve106,thenevapo rates in the cascade condenser 107 to be gasi?ed. When evaporating,theammoniareceivesheatfromthecarbondiox ideinthecarbondioxidecycletoliquefythecarbondioxide. Ontheotherhand,inthecarbondioxidecycle,thecarbon 65 dioxide cooled and lique?ed in the cascade condenser 107 ?oWs doWnWard by its hydraulic head to pass through the How adjusting valve 108 and enters the bottom feed type evaporator109toperformrequiredcooling.Thecarbondiox ideheatedandevaporatedintheevaporator109returnsagain to the cascade condenser 107, thus the ammonia performs naturalcirculation. Inthesystemoftheabove-describedpriorart,thecascade condenser 107 is located at a position higher than that of the evaporator 108, for example, located on a rooftop. Accord ingly, hydraulic head is produced betWeen the cascade con denser 107 and the evaporator having a cooler fan 10911. The principle of this is explained With reference to FIG. 1(B) Which is a pressure-enthalpy diagram. In the draWing, the broken line shoWs an ammonia refrigerating cycle using a compressor,andthesolidlineshoWsaC02 cyclebynatural circulationWhichispossiblebycomposingsuchthatthereis a hydraulic head betWeen the cascade condenser 107 and the bottomfeedtypeevaporator109. HoWever, the prior art includes a fundamental disadvan tage in that the cascade condenser (Which Works as an evapo ratorintheammoniacycletocoolcarbondioxide)mustbe locatedatapositionhigherthanthepositionoftheevaporator (refrigeratingshoWcase,etc.)forperformingrequiredcool ing in the CO2 cycle. Particularly, there may be a case that refrigerating shoWcases or freeZer units are required to be installedathigher?oorsofhighormiddle-risebuildingsat customers’convenience,andthesystemofthepriorartabso lutely cannot cope With such a case. To deal With this, some of the systems provide a liquid pump 110asshoWninFIG.9(B)inthecarbondioxidecycle tosubservethecirculationofthecarbondioxiderefrigerantto ensure more positive circulation. HoWever, the liquid pump serves only as an auxiliary means and basically natural cir culation for cooling carbon dioxide is generated by the hydraulicheadbetWeenthecondenser107andtheevaporator 109alsointhispriorart.Thatis,inthepriorart,apathWay providedWiththeauxiliarypump isaddedparalleltothe natural circulation route on condition that the natural circu lationofCO2 isproducedbytheutiliZationofthehydraulic head. (Therefore, the pathWay provided With the auxiliary pumpshouldbeparalleltothenaturalcirculationroute.) Particularly, the prior art of FIG. 9(B) utiliZes the liquid pump onconditionthatthehydraulicheadissecured,thatis, on condition that the cascade condenser (an evaporator for cooling carbon dioxide refrigerant) is located at a position higherthanthepositionoftheevaporatorforperforming cooling in the carbon dioxide cycle, and above-mentioned fundamental disadvantage is not solved also in this prior art system.Inaddition,itisdif?culttoapplythispriorartWhen evaporators (refrigerating shoWcases, cooling apparatuses, etc.)aretobelocatedontheground?oorandthe?rst?oor andaccordinglythehydraulicheadbetWeenthecascadecon denser and each of the evaporator Will be different to each other. Inthepriorartsystems,thereisarestrictionforproviding ahydraulicheadbetWeenthecascadecondenser107andthe evaporator 109 that natural circulation does not occur unless the evaporator is of a bottom feed type Which means that the inletofCO2 islocatedatthebottomoftheevaporatorandthe outletofCO2 isprovidedatthetopthereofasshoWninFIG. 9(A)andFIG.9(B).HoWever,inthebottomfeedtypecon denser,liquidCO2 entersthecoolingtubefromtheloWerside evaporatesinthecoolingtubeand?oWsupWardWhilereceiv ingheat,i.e.deprivingheatoftheairoutsidethecoolingtube, andtheevaporatedgas?oWsupWardinthecoolingtube.So, inthecoolingtube,theupperpartis?lledonlyWithgaseous CO2resultinginpoorcoolingeffectandonlyloWerpartofthe cooling tube is effectively cooled. Further, When a liquidPDF Image | AMMONIA CO2 REFRIGERATION SYSTEM
PDF Search Title:
AMMONIA CO2 REFRIGERATION SYSTEMOriginal File Name Searched:
US7992397.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)