Global Solutions for Ammonia Industrial Refrigeration
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1 Global Solutions for Ammonia Industrial Refrigeration MAYEKAWA s lineups and results of Natural Refrigerants Atmosphere 2009 October19th 2009 Mayekawa Mfg. Co., Ltd. Kuniaki Kawamura 1
2 Founded: 1924 Location: Tokyo, Japan Turnover: 1.1 million EURO Employees: 3,000 (33 countries) 2
3 1924 Piston Compressor 1964 Screw Compressor ºK Super Low Temp. Particle Accelerator (Helium) 1981 Nuclear Fusion (Helium) 1984 MagLev Train (Helium) 1989 Rocket Fuel (Hydrogen) 1993 Super GE (Super Conductive Electric Generator) 1958 Multi-Cylinder Piston Compressor Ethylene Plant LNG/LPG Tanker Organic(EOEG) Inorganic (NH3) Pharmaceutical Company founded in Over 70,000 Screw and Piston compressors running in more than 100 countries. 3
4 4
5 MYCOM International Branches Worldwide: 33 countries 8 production plants 119 offices Europe: 1 production plant 6 offices
6 The comparison of CFC refrigerants and natural refrigerants HCFC HFC NWFS The name of refrigerant Ozone depletion potential (ODP) Global warming potential (GWP) Leakage R Much R134a,R410A R407C,R404A ~3920 Much NH3,CO2,HC H20,AIR 0 0~3 No NH3 is found when leaked Odor/Smell No No NH3:Sharp odor Flammability Coefficient of performance (COP) No 1.00 No/Lower 0.90 NH3:Lower flammability HC:Higher flammability 1.05~1.2 * GWP used here is a 100-year GWP based on the data from Japan Fluorocarbon Manufacturers Association (JFMA). * COP is the comparison value when R22=1.
7 Development Concepts High efficiency Low refrigerant charge Less leakage
8 NH3 Installations in the industrial refrigeration field in Japan. ~1990: less 2% 2008: 80% * Tough Regulations for NH3 in Japan
9 9
10 Study Reveals Growing Importance of HFCs in Climate Warming 10
11
12 Refrigerant (Natural Five) NH 3 R-717 CO 2 R-744 HC Hydrocarbon H 2 O R-718 Air R Utility hot water Utility hot water Heating Chilled water Ice making Chilled water Ice making Cold storage, Freezer, Fish boat Specific Refrigeration needs Utility hot water Heating HVAC Heat recovery Chiller Freezer, Freeze-dry, Super Low temp storage -60 Cryogenics Cryogenics -100 Notes Conventional Eco-Cute Nat l Proj. system Butane + National Projects Propane Nat l Proj. Adsorption Heat recovery Nat l Proj. Air-cycle 12
13 NH3 High Efficiency: Compressors and IPM Motors Low Charge: * Secondary Refrigerant System(CO2) * Direct Expansion System Less Leakage: Hermetic Motors Ammonia
14
15 High Efficiency Motor(IPM motor) Stator winding Rare earth permanent magnet Rotor Conventional Motor 100 IPM Motor Benefits of IPM motor 80 5~10% better in efficiency 40% smaller in size Higher speed possible Efficiency(%) IPM Motor 20 Induction motor Load(%) Moment of inertia is reduced, rotational response, power factor, motor efficiency improved Stator
16 NH 3 Semi-hermetic motor Motor docked to compressor Safety improved Compact High efficiency Building the stator Patent Pending
17 IPM motor Compound type Water-cooled NH3 semi-hermetic motor
18 NH 3 /CO 2 system Application >NH 3 charge reduction >No risk of NH 3 leaking in the storage room Warehouse Package
19 Distribution center 19
20
21 Heat Pump packages using Ammonia Scroll compressors Capacity per Unit (-5/50C): Cooling 35kW Heating 47kW Refrigerant charge: 6kg ( Direct expansion system)
22 Suction Structure of scroll compressor 270[mm] Discharge 700[mm] Wrap specifically designed for ammonia. Low and high temperature models. Weight 100kg: flangeless, steel cased hermetic structure. Motor efficiency improved by IPMM with aluminum windings. Equipped with oil pump. Easy startup.
23 Specifications Item Value Units Casing Design Pressure 2.7 [MPaA] Design Temp. 120 [ ] Cond. Temp. 30~55 [ ] Operation Range Evap. Temp. Cond. Pressure -35~ ~2.311 [ ] [MPaA] Evap. Pressure ~0.615 [MPaA] Rotational Speed 1800~3600 [rpm] Models Low and High temp Motor Type of Motor IPM [-] Max Power 15 [kw]
24 CO2 Hot water and Hot dry air supply Heat- Pump Source : Air and Water Carbon dioxide
25
26 26
27
28 H2O Ad-sorption Chiller Utilizing Solar Energy Water
29
30 Air conditioner for shopping mall
31
32 HC Mixed Refrigerants Heat-Pump (Butane and Propane) Hydrocarbon
33
34 Employed a cooling unit taking advantage of 7,000 tons of snow stocked underground, and as its subsystem, our environment-friendly building air-conditioner was introduced At International Media Center of G8 Toyako summit in Hokkaido
35
36 AIR Air Cycle Refrigeration System For Low Temperature Applications -50 ~ -120 AIR
37
38 -60 ultralow cold storage
39
40 Conclusion We can eliminate HFCs using Natural Refrigerants in industrial refrigeration applications. In the view of prevention of global warming we would like to offer 3 proposals below; 1. Promoting natural working fluids aggressively in the proven industrial field 2. Introducing natural working fluids in the possible commercial and consumer field 3. Recommending tightening of regulations of HFCs and encouraging the funding for the prevalence of refrigeration systems using natural refrigerants and its development. 40
41 Thank you very much for your Attention. NATURE IS WHAT WE DESIGN FOR 41
Mayekawa Mfg. Co., Ltd. Kuniaki Kawamura
2014.2.3 Mayekawa Mfg. Co., Ltd. Kuniaki Kawamura 1 Founded: 1924 Location: Tokyo, Japan Turnover: $1.5 Billion Employees: 3,350 (33 countries) 2 1924 Vertical low speed reciprocating refrigeration compressor
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