MAYEKAWA. kongres. 45th HVAC&R CONGRES AND EXHIBITION : IMPROVING ENERGY EFFICIENCY IN CLIMATE AND OZONE FRIENDLY LATEST REFRIGERATION TECHNOLOGIES

Transcription

1 kongres 45th HVAC&R CONGRES AND EXHIBITION : IMPROVING ENERGY EFFICIENCY IN CLIMATE AND OZONE FRIENDLY LATEST REFRIGERATION TECHNOLOGIES 3 5. XII Beograd, Srbija Presented by Hideyo Asano, MAYEKAWA MAYEKAWA 1

2 NATURAL REFRIGERANTS Actual Energy Conservation by using NewTon NH3/CO2 in Cold Storage and Freezer Presentation by : Hideyo Asano Author : Jan Boone, Hideyo Asano 2

3 Comparison of Refrigeration Cycle Feature of NewTon Energy conservation in Cold Storage Energy conservation in Freezer Ice Skate Rink Conclusions DOC R.0 3

4 1. Comparison of Refrigeration Cycle 1-1. Ideal Refrigeration Cycle 1-2. Comparison of theoretical C.O.P. 4

5 1-1. Ideal Refrigeration Cycle Single Stage compression Tow Stage compression Cascade Refrigeration p 6 p 5 GM p-h chart 1 4 GH h h1 h2 h4,h3 h h1 h5 h2 h6 h3,h h7,h 4 8 Condenser Condenser 4 Evaporator h1 h 4 COP = h2 h1 High Side Compressor 2 Expansion Valve Expansion Valve Cascade Condenser 2 3 Expansion Low Side Valve Compressor GL(h1 h 4) GL (h 2 h1) + (GL + GM )(h6 h5) (GL = 1.0) Expansion Valve 1 Evaporator COP = 7 Expansion Valve 5 Inter Cooler Compressor 1 h1 h5 h2 h6 6 3 High Stage Compressor 3 2 h Condenser 6 Booster Compressor 1 COP 5 COP h3,h4 Flow diagram 2 8 GL GL 4 p 6 4 Evaporator COP = GL (h1 h 4) GL(h 2 h1) + GH ( H 6 h5) (GL = 1.0) 5

6 1-2. Comparison of theoretical COP 6

7 2. Feature of NewTon 2-1. Basic Concept of NewTon 2-2. NH3 New Screw Compressor 2-3. High Efficiency Motor IPM motor 2-4. New rotor profile and Double economizer system 2-5. NewTon Cycle Flow 2-6. NewTon Lineup 7

8 2-1. Basic Concept of NewTon NewTon Out door Cold Storage Cooler CT Cond. Water Water cooled Energy saving NH3 charge min. Free layout Easy Maintenance Evap. NH3 NH3 Package New Screw compressor Semi-hermetic IPM motor Flooded Evaporator Double economizer CO2 CO2 brine Safety Low pump power No trouble by oil High heat transfer Automatic operation Safety Energy saving Easy maintenance 8

9 2-2. NH3 New Screw Compressor Two stage compound Screw DOC R.0 Semi-hermetic IPM Motor 9

10 2-3. High Efficiency Motor IPM motor - Semi-Hermetic for NH3 - Benefits of IPM motor ５ １０ better in efficiency 40% smaller in size High speed is possible Conventional IPM motor 回転子 10 10

11 2-4. New rotor profile and Double economizer system Booster High stage Evap. Condenser New Rotor-Profile Booster Economizer Inter cooler Double Economizer NH3 gas CO2 gas High Performance HEX S P CO2 liquid NH3 liquid NH3 gas S T CO2 gas NH3 liquid CO2 liquid 11

12 2-5. NewTon Cycle Flow Low P&T P&T Gas Gas Low High Pressure gas [Compressor] [Evaporator] CO2 Gas High P&T Gas and Oil Oil Separator CO2 Liquid [Condenser] Inter Cooler Economizer Booster High P Liquid Low Low T T Liquid Liquid DOC R.0 12

13 2-6 NewTon Lineup Use Model Remarks -25C NewTon R-3000, R-6000, R-8000 RT : -25 0C NewTon C platform Freezer NewTon F-300, F-600, F-800 RT:-35 Skate Rink NewTon S Cold Storage NewTon R-3000, NewTon F-300 NewTon C, NewTon S 13

14 ３. Energy conservation in Cold Storage Main Installations S.P.C. of Cold Storage Power Reduction through Renewal Sample of Renewal 14

15 3-1 Customer Main Installations of NewTon Tonnage Nr. of Newton Installed Nissui Logistics / Kawasaki 14,000 ３ 2008 Toyo Suisan / Nagoya 32,000 ９ 2009 Housui / Atsugi 8,000 ２ 2010 Yokohama Ritou / Osaka 27,000 ８ 2011 Coop / Onomichi 30,000 ８ 2012 Matsuoka / Kawasaki 80,000 １１ 2012 Nichirei Logistics / Kawasaki (40,000) １ 2013 Maruha-Nichiro / Kawasaki 30, QP Logistics / Tokorozawa 18, Nissui Log. / Kawasaki Coop / Onomichi Matsuoka / Kawasaki Toyo Suisan / Nagoya Nichirei Log. / Kawasaki Yokorei / osaka Maruha-Nichiro / Kawasaki QP Log. / 15

16 3-2 Specific Power Consumption in Cold Storage 16

17 3-3 Power reduction through renewal with NewTon Refrigerant formerly used Power reduction Volume Age (m3) (year) Refrig. Comp. (%) Tokyo Toyomi 45, HCFC-22 Screw 31.1 Niigata Reizo 10, HCFC-22 Recip QP Kewpie 16, HCFC-22 Recip Sensui Reizo 6, HCFC-22 Screw 29.3 Ajinomoto 7, HCFC-22 Recip Gliko 30, HCFC-22 Screw 19.8 Showa Reizo 32, HCFC-22 Recip AMB Funabashi 30, NH3/Brine Recip Customer 17

18 3-4 Tokyo Toyomi Reizo (Funabashi) Renewal F1610C-8sets HCFC-22 DX Storage volume 45,000 m3 NewTon stes NH3/CO2 (average reduction -31.1%) DOC R

19 ４. Energy conservation in Freezer Bread dough Farm Products 19

20 4-1 Bread Dough Customer Product Renewal Kobeya Baking Co.,Ltd. / Chiba Factory Bread Dough Previous New Freezer Type Spiral Spiral Compressor Type F1612C NewTon F600 Main Motor 130kW 90kW Cooling Method HCFC-22 DX NH3/CO2 L.P. 20

21 4-1 Bread Dough Customer Product Renewal Kobeya Baking Co.,Ltd. / Chiba Factory Bread Dough Average power reduction of compressor was 38% 21

22 Farm Product Extension 4-2 Customer Product Hokkaido Foods Dice Potato Freezer Type Compressor Type Main Motor Cooling Method Existing New IQF IQF F2016LSC x 360kW HCFC-22 2 NewTon F600 x kw L.P. NH3/CO2 L.P. 22

23 Farm Product Extension 4-2 Customer Product Hokkaido Foods Co.,Ltd. Dice Potato Comparison of Specific Power Consumption(kWH/ton) Existing Dice Potato F2016LSC) New NewTon) Reduction (mm) (kwh/ton) (kwh/ton) (%) 4.8x4.8x x10x x15x x15x Power reduction of compressor was 25~57% 23

24 ５. Ice Skate Rink 24

25 5. Customer Use Ice Skate Rink Hyogo Nishinomiya Ice Arena Ice Skate Rink Hyogo Nishinomiya Ice Arena Size of Rink Machine 2,100 (m2) NewTon ｰ S Moriguchi Sport Centre 1,456 (m2) 3 BCL 2 Motor Power 195 (kw) 180 (kw) Cooling Method NH3/CO2 L.P. HCFC-22/Brine 25

26 5. Ice Skate Rink Comparison of power consumption data Specific power consumption of NewTon was half of HCFC-22. Power consumption was total data, including compressors, pumps, funs, lights and air conditioning etc. 26

27 6. Conclusions 27

28 Conclusions Energy conservation by using NewTon was confirmed as below; １ Totally 25 to 30% reduction in cold storage ２ 25 to 50% reduction in freezer ３ Totally 40 to 50% reduction in ice skate rink Reasons of these huge energy conservation are as below; A B C D Super high energy efficiency of compressor, motor, heat exchanger etc. Higher energy efficiency at part load condition Flexible operation to meet various conditions Stable operating condition of ammonia cycle 28

29 Thank you very much!. 29