Exhibition H4A 08 Emerson Rinne

Transcription

1 Exhibition H4A 08 Emerson Rinne Fachprogramm Technical Programme Emerson Climate Technologies, Chillventa 2014, Page 1

2 Compressor Performance Testing of New Low GWP Refrigerants Dr. Frank Rinne Director Application Engineering Emerson Climate Technologies Hall 5 / Hall 5 / Hall 5 / 5-417

3 Content Introduction Emerson Refrigerant Overview R404A Alternatives R407A & R407F R448A (N40) & R449A (XP40) R134a Alternatives R450A (N13) Hydrocarbons R290 & R1270 Summary Emerson Climate Technologies, Chillventa 2014, Page 3

4 Emerson Climate Technologies Product Spectrum SEMIHERMETIC COMPRESSORS SCROLL COMPRESSORS ALCO CONTROLS CONDENSING UNITS VILTER SCREW COMPRESSORS Emerson Climate Technologies, Chillventa 2014, Page 4

5 Refrigerant Properties from Compressor Manufacturer s s Point of View Non flammable A1 Environment No ODP Low GWP Non toxic Ideal Metrics HC (R290) HFC (R410) CO2 R407F Heat Transfer & Pressure Drop (System Efficiency) Compressor Efficiency System Impact No Glide Compressor & System Cost Compressor Impact Compressor Capacity Emerson Climate Technologies, Chillventa 2014, Page 5

6 Refrigerant Overview Pressure or Capacity CO 2 A1 Non Flammable A2L Mildly Flammable A3 Flammable B2L Toxic, Mildly Flam. Refrigerant Availability Today Development FY14 FY15 & later R410A DP: DR HWL: L41 ARK: ARM 71 R32 R410A R404A & R407/22 NH 3 R DP: DR7 HWL: L40, L20 ARK: ARM 20, ARM 42 < 1500 DP: DR33 HWL: N20, N40 ARK: ARM 32 R407F R407C R22 R407A R404A (3922) R134a R123-Like (.) HFO 1234yf HFO 1234ze DP: DR2; HWL: N12 ARK: ARC 1 ~600 DP: XP10 HWL: N GWP Level Qualitative Chart Not To Scale Emerson Climate Technologies, Chillventa 2014, Page 6 6 R134a

7 The Transition from R404A to lower GWP/HFC s s is on the way R134a is used in Refrigeration since many year R407A & R407F to replace R404A today Reduction of the GWP up to 50% Reduce the impact for retrofit of existing systems Alternatives for HFC and Hybrid Systems Energy Savings reported from field tests > 10% compared with R404A For R407F many qualified products are available on the market Scroll Source: RAC Magazine Stream ZX EazyCool Emerson Climate Technologies, Chillventa 2014, Page 7

8 High Discharge Temperature for R407F limit the Operation Envelop Superheat Management or additional compressor cooling R404A Smaller Envelop R407F Reduction of the Operating Envelop with acceptable limits for LT & MT LT Applications might need additional compressor cooling Scroll compressors in LT perform similar Scroll s are already equipped with vapor or liquid injection Emerson Climate Technologies, Chillventa 2014, Page 8

9 R448A (N40) / R449A (XP40) Comparison Both N40 and XP40 Are Medium-pressure, A1 Refrigerants Honeywell N40 Composition DuPont XP40 Composition R32 (26%) R32 (24%) R125 (26%) R125 (25%) R134a (21%) R134a (26%) 1234yf (20%) 1234ze (7%) 1234yf (25%) GWP 1387 (IPPC 4) GWP 1397 (IPPC 4) Note: 1234yf and 1234ze are 4 th generation, low-gwp replacement refrigerants for R134a Thermophysical Property Comparison, N40 To XP40: Pressures: <1% Differential Across Operating Range Density: <2% Differential Across Operating Range Enthalpy: <1% Differential Across Operating Range FROM COMPRESSOR MANUFACTURER POINT OF VIEW VERY SIMILAR Emerson Climate Technologies, Chillventa 2014, Page 9

10 Emerson s s Supermarket Lab Test Results R448A (N40) Low Temp (-22 F/-30 C) Medium Temp (12 F /-11 C) Low Temp: N-40 Shows About 3% Lower Energy Consumption Than R404A Medium Temp: N-40 Shows 3% To 8% Lower Energy Consumption Than R404A Emerson Climate Technologies, Chillventa 2014, Page 10 10

11 MT & LT Scroll Cooling Capacity R404A vs. R448A and R407A Baseline 0.8% < N40 3.2% > R407A 4.0% < R404A Baseline 18.4% < R404A 4.3% > R407A 22.7% < R404A MT: R448A (N40) capacity similar to both R404A and R407A LT: R448A (N40) capacity similar to R407A Emerson Climate Technologies, Chillventa 2014, Page 11 11

12 Perf Comparision R134a VS R450A MT Rating point Emerson Climate Technologies, Chillventa 2014, Page 12

13 Environmental Properties of Natural Refrigerants vs. HFCs Chemical Formula Property R-404A R-407C R-290 R-1270 R-744 GWP 100 in accordance to IPCC 2007 Near Az. Blend Non Az. Blend C3H8 C3H6 CO2 ODP GWP NBP ( C) Critical Temperature ( C) Glide (K) 0.5 ~ 5 N/A N/A N/A Safety Class (EN 378, ASHRAE) A1 A1 A3 A3 A1 Heat of Combustion (MJ/kg) Burning Speed (cm/s) Emerson Climate Technologies, Chillventa 2014, Page 13

14 Theoretical Performance of R290 & R1270 vs. R404A & R407C Vol. Cooling Capacity vs R 404A 30% 20% 10% 0% 10% 20% 45 C 25 C 45 C 45 C 25 C 25 C Cooling Capacity 30% Evaporating temperature ( C) R290-5 to -22% R to -8% R to -13% R to +2% R1270 R290 R407C COP vs R 404A 20% 15% 10% 5% Vs. R404A Vs. R407C 45 C 25 C COP 0% Evaporating temperature ( C) R to +3 % R to +2 % R % R to +0 % R 1270 R 290 R 407C Emerson Climate Technologies, Chillventa 2014, Page 14

15 Residential Heat Pump Scroll Compressor Performance 120 Heating capacity HCOP 110 Sub-cooling 0 K Superheat 10 K R 290 vs R 407C (%) Evaporating Temperature 10 C C 45 C 60 C Condensing temperature ( C) Heating Capacity HCOP R290 : -9 to -5% R290-2 to +7% Emerson Climate Technologies, Chillventa 2014, Page 15

16 Operating Envelopes for Comm. Refrigeration and Heat Pump Condensing Temperature ( C) R 290 R 1270 R 404A DLT Limit Pressure Limit Evaporating Temperature ( C) Condensing Temperature ( C) 80 R 290 R 407C Extension Evaporating Temperature ( C) Refrigeration application R290 DLT similar to R404A R1270 has higher DLT Heat Pump application R290 DLT is lower vs. R407C ( Envelope extension) Emerson Climate Technologies, Chillventa 2014, Page 16

17 Summary R404A, dominant HFC in refrigeration giving way to R407A, R407F (~half GWP and same or better system efficiency) and R134a Next generation of lower GWP synthetics like R448A, R449A, R450A are attractive in A1 applications, for service and new R717, R744 and R290 are ideal environmentally friendly choices for right application, system and regions Emerson will finish the Qualification of all new Refrigerants in Q1 / 2015, for field tests please contact Emerson Climate Technologies Emerson Climate Technologies, Chillventa 2014, Page 17

18 Exhibition Hall 4A Fachprogramm Technical Programme Emerson Climate Technologies, Chillventa 2014, Page 18