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Appendix A

ISO-1 Cascade system

Compressors

High-temperature stage: 5 Bitzer 6H-25.2Y. Refrigerant: R404A
Low-temperature stage: 3 Bitzer 2EC-4.2K. Refrigerant: R744 (CO2)

Efficiencies

Bitzer 6H-25.2Y with R404A

Volumetric efficiency

Etav=(avA+bvA*Tc)+(avB+bvB*Tc)*Phi
with Tc: Condensation temperature in °C and Phi as the pressure ratio Pc/P0

The constants have been determined as shown below:

avA = 1.008248481 bvA= -0.001394396505
avB= - 0.03589897282 bvB = 0.000294799292

Isentropic efficiency

EtaIs = (aisA+bisA*Tc)+(aisB+bisB*Tc)*Phi+ (aisC+bisC*Tc) *Phi2
with Tc: Condensation temperature in C and Phi as the pressure ratio Pc/P0

The constants have been determined as shown below:

aisA = 0.5002052878 bisA = 0.002410386475
aisB = 0.0406335594 bisB = -0.0005551792135
aisC = -0.002661829944 bisC = 4.162626219E-0

With the determined constants, Bitzer's data are reproduced better than 1.2% for the refrigeration capacity and better than 3.7 % for the power consumption of the compressor for -40°C<T0<-5°C and 30°C<Tc<50°C.

Within the actual temperature range, the data for the refrigeration capacity are reproduced better than 0.2% and the data for the power consumption of the compressor are reproduced better than 2.3%.

Bitzer 2EC-4.2K with R744

Volumetric efficiency

EtaV=ac(Tc)*(Phi-1.235)+0.9247
with Tc: Condensation temperature in C and Phi as the pressure ratio Pc/P0

The constants have been determined as shown below:

Ac=-0.111873903+0.0001737681367*Tc-
6.613978021E-5*Tc*Tc

Isentropic efficiency

EtaIs = A(T) + B(T)*Phi + C(T)*Phi*Phi

A = aA+bA*T+cA*T*T
aA = 0.7309844503      bA = 0.008370719891
cA = -0.0005993144145
B = aB+bB*T+cB*T*T
aB = -0.06575970538      bB = -0.002804107695
cB = 0.0005618800195
C = aC+bC*T+cC*T*T
aC = -0.001403356293      bC = -0.0004784304082
cC = -0.0001543907826

With the determined constants, Bitzer's data are reproduced better than 0.2% for the refrigeration capacity and better than 0.6 % for the power consumption of the compressor for -50°C<T0<-30°C and -20°C<Tc<-5°C.

Table A1. Comparison between data and fit for Bitzer 6H-25.2Y

T0 Tc Qdata Wdata Qfit Wfit dQ dW ηv ηis
C C W W W W % % - -
-5 30 87900 23500 87867 22949 0.0 2.3 0.892 0.628
-10 30 72500 22150 72485 22159 0.0 -0.0 0.878 0.636
-15 30 59300 20560 59209 20833 0.2 -1.3 0.861 0.644
-20 30 47800 18830 47789 19106 0.0 -1.5 0.840 0.654
-25 30 38000 16940 38008 17105 -0.0 -1.0 0.813 0.663
-30 30 29700 14950 29674 14952 0.1 -0.0 0.779 0.671
-35 30 22650 12890 22618 12762 0.1 1.0 0.735 0.674
-40 30 16740 10810 16687 10647 0.3 1.5 0.678 0.668
-45 30 11850 8750 11742 8717 0.9 0.4 0.603 0.640
-5 40 74700 27200 74854 26831 -0.2 1.4 0.867 0.649
-10 40 61600 25180 61649 25189 -0.1 -0.0 0.851 0.656
-15 40 50200 23000 50228 23149 -0.1 -0.6 0.832 0.664
-20 40 40400 20680 40386 20830 0.0 -0.7 0.808 0.671
-25 40 31900 18280 31943 18344 -0.1 -0.3 0.777 0.678
-30 40 24700 15820 24740 15801 -0.2 0.1 0.738 0.682
-35 40 18590 13360 18635 13305 -0.2 0.4 0.688 0.679
-40 40 13340 10920 13499 10956 -1.2 -0.3 0.623 0.662
-45 40 9130 8540 9214 8857 -0.9 -3.7 0.537 0.618
-10 50 50500 27780 50547 27722 -0.1 0.2 0.826 0.673
-15 50 41150 25020 41103 25085 0.1 -0.3 0.805 0.679
-20 50 33000 22180 32941 22254 0.2 -0.3 0.778 0.685
-25 50 25950 19310 25924 19329 0.1 -0.1 0.744 0.690
-30 50 19920 16430 19927 16405 -0.0 0.2 0.701 0.692
-35 50 14760 13590 14836 13570 -0.5 0.1 0.645 0.688
-40 50 10390 10830 10547 10902 -1.5 -0.7 0.573 0.670

Table A2. Comparison between data and fit for Bitzer 2EC-4.2K

T0 Tc Qdata Wdata Qfit Wfit dQ dW ηv ηis
C C W W W W % % - -
-30 -5 22877 5260 22866 5260 0.0 0.0 0.822 0.581
-35 -5 18166 5430 18172 5427 -0.0 0.0 0.776 0.560
-40 -5 14065 5370 14063 5380 0.0 -0.2 0.719 0.534
-45 -5 10487 5140 10484 5144 0.0 -0.1 0.647 0.498
-30 -10 24674 4380 24645 4373 0.1 0.2 0.800 0.580
-35 -10 19753 4650 19723 4652 0.2 -0.0 0.808 0.570
-40 -10 15426 4710 15415 4702 0.1 0.2 0.756 0.552
-45 -10 11674 4610 11662 4579 0.1 0.7 0.691 0.524
-50 -10 8428 4370 8412 4344 0.2 0.6 0.607 0.478
-30 -15 26437 3540 26420 3513 0.1 0.8 0.877 0.561
-35 -15 21272 3910 21254 3931 0.1 -0.5 0.838 0.561
-40 -15 16752 4090 16731 4092 0.1 -0.1 0.789 0.554
-45 -15 12808 4100 12792 4079 0.1 0.5 0.728 0.534
-50 -15 9388 3970 9379 3993 0.1 -0.6 0.650 0.489
-35 -20 22807 3230 22821 3230 -0.1 0.0 0.867 0.532
-40 -20 18061 3500 18067 3514 -0.0 -0.4 0.822 0.539
-45 -20 13925 3600 13925 3588 -0.0 0.3 0.764 0.533
-50 -20 10330 3580 10338 3582 -0.1 -0.0 0.690 0.498

Figure A1. Volumetric efficiency for Bitzer 6H-25.2Y

Figure A1. Volumetric efficiency for Bitzer 6H-25.2Y

Figure A2. Isentropic efficiency for Bitzer 6H-25.2Y

Figure A2. Isentropic efficiency for Bitzer 6H-25.2Y

Figure A3. Volumetric efficiency for Bitzer 2EC-4.2K

Figure A3. Volumetric efficiency for Bitzer 2EC-4.2K

Figure A4. Isentropic efficiency for Bitzer 2EC-4.2K

Figure A4. Isentropic efficiency for Bitzer 2EC-4.2K

ISO-2 Conventional system (Parallel system).

Compressors

High-temperature stage: 16 PresTcold PL400/0062 Refrigerant: R404A
Low-temperature stage: 10 PresTcold PL400/0062 Refrigerant: R404A

Efficiencies

PresTcold 400/0062 with R404A

Volumetric efficiency

Etav=A+B*Phi
with Phi as the pressure ratio Pc/P0
The constants have been determined as shown below:
A = 1.02740540205
B= - 0.03579218125

Isentropic efficiency

EtaIs=(aA+bA*Tc)+(aB+bB*Tc)*Phi+(aC+bC*Tc+
cC*Tc*Tc)*Phi*Phi
with Tc: Condensation temperature in C and Phi as the pressure ratio Pc/P0

The constants have been determined as shown below:

aA=0.7164393767 bA=-0.001127291506
aB=- 0.001400215668 bB=0.0002732193155
aC=-0.0004715863813 bC=-3.18364179E-005
cC=4.11231621E-007  

With the determined constants, PresTcold's data are reproduced better than 2.5% for the refrigeration capacity and better than 5.6 % for the power consumption of the compressor for -50°C<T0<-20°C and 25°C<Tc<55°C.

Within the actual temperature range, the data for refrigeration capacity are reproduced better than 1.1% and the data for the power consumption of the compressor are reproduced better than 1.8%.

Table A3. Comparison between data and fit for PresTcold 400/0062

T0 Tc Qdata Wdata Qfit Wfit dQ dW ηv ηis
C C W W W W % % - -
20 25 10790 3620 10702 3529 -0.8 -2.5 0.879 0.693
-25 25 8560 3290 8475 3236 -1.0 -1.7 0.847 0.690
-30 25 6650 2940 6579 2894 -1.1 -1.6 0.808 0.683
-35 25 5020 2570 4974 2523 -0.9 -1.8 0.756 0.671
-40 25 3660 2210 3626 2141 -0.9 -3.1 0.689 0.649
-45 25 2530 1840 2502 1762 -1.1 -4.2 0.601 0.610
-50 25 1610 1480 1574 1402 -2.3 -5.2 0.483 0.537
-20 30 9920 3800 9885 3779 -0.4 -0.6 0.858 0.691
-25 30 7820 3410 7782 3415 -0.5 0.1 0.823 0.687
-30 30 6020 3010 5991 3013 -0.5 0.1 0.777 0.678
-35 30 4500 2600 4474 2592 -0.6 -0.3 0.719 0.663
-40 30 3220 2190 3199 2170 -0.6 -0.9 0.643 0.634
-45 30 2150 1780 2136 1762 -0.6 -1.0 0.542 0.581
-50 30 1270 1400 1258 1382 -0.9 -1.3 0.408 0.484
-20 35 9040 3970 9051 3990 0.1 0.5 0.836 0.690
-25 35 7080 3520 7077 3558 -0.0 1.1 0.795 0.684
-30 35 5400 3060 5395 3098 -0.1 1.2 0.744 0.674
-35 35 3970 2600 3969 2629 -0.0 1.1 0.677 0.653
-40 35 2770 2140 2771 2169 0.0 1.3 0.591 0.616
-45 35 1780 1710 1771 1732 -0.5 1.3 0.477 0.547
-50 35 950 1280 945 1328 -0.5 3.7 0.326 0.421
-20 40 8150 4110 8202 4159 0.6 1.2 0.811 0.689
-25 40 6330 3600 6362 3659 0.5 1.6 0.765 0.683
-30 40 4770 3080 4793 3143 0.5 2.0 0.707 0.670
-35 40 3450 2570 3463 2627 0.4 2.2 0.632 0.644
-40 40 2340 2080 2343 2128 0.1 2.3 0.535 0.597
-45 40 1410 1600 1409 1657 -0.0 3.6 0.406 0.509
-20 45 7270 4220 7338 4279 0.9 1.4 0.784 0.690
-25 45 5590 3650 5639 3714 0.9 1.8 0.732 0.683
-30 45 4150 3080 4188 3142 0.9 2.0 0.667 0.667
-35 45 2940 2530 2957 2579 0.6 1.9 0.583 0.636
-40 45 1920 1990 1921 2037 0.1 2.4 0.473 0.577
-45 45 1060 1470 1057 1517 -0.3 3.2 0.329 0.470
-20 50 6380 4310 6459 4346 1.2 0.8 0.754 0.693
-25 50 4850 3680 4908 3716 1.2 1.0 0.697 0.685
-30 50 3540 3060 3583 3086 1.2 0.9 0.623 0.667
-35 50 2440 2450 2458 2473 0.7 0.9 0.529 0.630
-40 50 1510 1870 1510 1879 0.0 0.5 0.406 0.561
-20 55 5510 4370 5562 4350 1.0 -0.5 0.722 0.699
-25 55 4150 3680 4172 3654 0.5 -0.7 0.658 0.691
-30 55 2940 3010 2981 2967 1.4 -1.4 0.576 0.671
-35 55 1950 2350 1969 2296 1.0 -2.3 0.470 0.629
-40 55 1120 1730 1116 1633 -0.4 -5.6 0.333 0.550

Figure A5. Volumetric efficiency for PresTcold 400/0062

Figure A5. Volumetric efficiency for PresTcold 400/0062

Figure A6. Isentropic efficiency for PresTcold 400/0062

Figure A6. Isentropic efficiency for PresTcold 400/0062

ISO-3 Cascade system

Compressors

High-temperature stage: 4 Bitzer 4G-30.2Y Refrigerant: R404A
Low-temperature stage: 4 Bitzer 2HC.3.2K Refrigerant: R744 (CO2)

Efficiency

Bitzer 4G-30.2Y with R404A

Volumetric efficiency

Etav=(avA+bvA*Tc)+(avB+bvB*Tc)*Phi
with Tc: Condensation temperature in C and Phi as
pressure ratio Pc/P0

The constants have been determined as shown below:

avA = 0.9477344953 bv A= 0.000261552785
avB= - 0.03054324206 bvB = 0.0001098626795

Isentropic efficiency

EtaIs = (aisA+bisA*Tc)+(aisB+bisB*Tc)*Phi
+(aisC+bisC*Tc) *Phi2
with Tc: Condensation temperature in C and Phi as
pressure ratio Pc/P0

The constants have been determined as shown below:

aisA = 0.4011203731 bisA = 0.004757772635
aisB = 0.06439495704 bisB = -0.000960675304
aisC = - 0.005133015726 bisC = 8.090878455E-005

With the determined constants Bitzer's data are reproduced better than 1.2% for the refrigeration capacity and better than 4.2 % for the power consumption of the compressor for -40°C<T0<-5°C and 30°C<Tc<50°C.

Within the actual temperature range, the data for the refrigeration capacity are reproduced better than 0.4% and the data for the power consumption of the compressor are reproduced better than 0.6%.

Bitzer 2HC-3.2K with R744

Volumetric efficiency

EtaV = aC(Tc)*(Phi-1.232) +0.9280
with Tc: Condensation temperature in C and Phi as pressure ratio Pc/P0
The constants have been determined as shown below:
aC = - 0.1119778613 + 0.0001747267099*Tc
- 6.59837705E-005*Tc*Tc

Isentropic efficiency

EtaIs = A(T) + B(T)*Phi + C(T)*Phi*Phi

A = aA+bA*T+cA*T*T
aA = 0.6460083817     bA = -0.001121194203
cA = -0.0008059707318
B = aB+bB*T+cB*T*T
aB = -0.009833249381     bB = 0.002792562938
bB = 0.0006477213502

C = aC+bC*T+cC*T*T
aC = -0.0100883472     bC = -0.001219987245
cC = -0.0001574917651

With the determined constants, Bitzer's data are reproduced better than 0.4% for the refrigeration capacity and better than 0.8 % for the power consumption of the compressor for -50°C<T0<-30/deg;C and -20/deg;C<Tc<-5°C.

Table A6. Comparison between data and fit for Bitzer 4G-30.2Y

T0 Tc Qdata Wdata Qfit Wfit dQ dW ηv ηis
C C W W W W % % - -
-5 30 66500 17810 66388 17521 -0.2 -1.6 0.8803 0.6215
-10 30 54900 16840 54749 16858 -0.3 0.1 0.8665 0.6312
-15 30 44900 15700 44704 15805 -0.4 0.7 0.8494 0.6414
-20 30 36250 14410 36062 14478 -0.5 0.5 0.8281 0.6511
-25 30 28800 13020 28661 12986 -0.5 -0.3 0.8012 0.6586
-30 30 22450 11570 22355 11441 -0.4 -1.1 0.7669 0.6605
-35 30 17040 10090 17016 9955 -0.1 -1.3 0.7228 0.6503
-40 30 12480 8610 12528 8666 0.4 0.6 0.6654 0.6158
-5 40 57000 20380 57187 20180 0.3 -1.0 0.8656 0.6596
-10 40 47000 18880 47024 18908 0.1 0.1 0.8486 0.6669
-15 40 38250 17260 38233 17359 -0.0 0.6 0.8276 0.6738
-20 40 30700 15560 30658 15634 -0.1 0.5 0.8013 0.679
-25 40 24200 13810 24159 13831 -0.2 0.2 0.7682 0.6008
-30 40 18610 12060 18615 12051 0.0 -0.1 0.7260 0.6725
-35 40 13860 10330 13917 10404 0.4 0.7 0.6718 0.6483
-40 40 9850 8680 9964 9043 1.2 4.2 0.6011 0.5924
-5 50 47400 22580 47284 22345 -0.2 -1.0 0.8487 0.6905
-10 50 38900 20600 38762 20570 -0.4 -0.1 0.8281 0.6952
-15 50 31500 18560 31367 18593 -0.4 0.2 0.8026 0.699
-20 50 25100 16500 24976 16498 -0.5 -0.0 0.7708 0.7005
-25 50 19580 14450 19481 14368 -0.5 -0.6 0.7307 0.6975
-30 50 14840 12450 14785 12287 -0.4 -1.3 0.6796 0.6856
-35 50 10810 10540 10798 10338 -0.1 -1.9 0.6139 0.6570
-40 50 7410 8760 7440 8625 0.4 -1.5 0.5284 0.5973

Table A7. Comparison between data and fit for Bitzer 2HC-3.2K

T0 Tc Qdata Wdata Qfit Wfit dQ dW ηv ηis
C C W W W W % % - -
-30 -5 13110 3020 13144 3031 -0.3 -0.4 0.8251 0.5793
-35 -5 10410 3110 10447 3114 -0.4 -0.1 0.7795 0.5615
-40 -5 8060 3060 8087 3082 -0.3 -0.7 0.7225 0.5358
-45 -5 6010 2950 6031 2961 -0.4 -0.4 0.6505 0.4978
-30 -10 14140 2510 14165 2515 -0.2 -0.2 0.8533 0.5799
-35 -10 11320 2660 11338 2672 -0.2 -0.5 0.8116 0.5701
-40 -10 8840 2700 8863 2700 -0.3 0.0 0.7595 0.5532
-45 -10 6690 2640 6708 2631 -0.3 0.3 0.6937 0.5247
-50 -10 4830 2500 4841 2507 -0.2 -0.3 0.6097 0.4764
-30 -15 15150 2030 15184 2014 -0.2 0.8 0.8800 0.5622
-35 -15 12190 2240 12217 2257 -0.2 -0.8 0.8411 0.5618
-40 -15 9600 2340 9619 2352 -0.2 -0.5 0.7926 0.5544
-45 -15 7340 2350 7356 2345 -0.2 0.2 0.7314 0.5341
-50 -15 5380 2270 5396 2291 -0.3 -0.9 0.6533 0.4905
-35 -20 13070 1850 13116 1857 -0.4 -0.4 0.8706 0.5322
-40 -20 10350 2010 10386 2026 -0.3 -0.8 0.8249 0.5381
-45 -20 7980 2070 8007 2069 -0.3 0.0 0.7672 0.5311
-50 -20 5920 2050 5947 2058 -0.4 -0.4 0.6935 0.4988

Figure A7. Volumetric efficiency for Bitzer 4G-30.2Y

Figure A7. Volumetric efficiency for Bitzer 4G-30.2Y

Figure A8. Isentropic efficiency for Bitzer 4G-30.2Y

Figure A8. Isentropic efficiency for Bitzer 4G-30.2Y

Figure A9. Volumetric efficiency for Bitzer 2HC-3.2K

Figure A9. Volumetric efficiency for Bitzer 2HC-3.2K

Figure A10. Isentropic efficiency for Bitzer 2HC-3.2K

Figure A10. Isentropic efficiency for Bitzer 2HC-3.2K

ISO-4 Conventional system (Parallel system).

Compressors

High-temperature stage: 15 Copeland Scroll ZS75K4E-TDW
Refrigerant: R404A

Low-temperature stage: 7 Copeland Scroll ZF33K4E-TDW
Refrigerant: R744 (CO2)

Efficiency

Copeland Scroll ZS75K4E-TDW with R404A

Volumetric efficiency

Etav = A0 + A1*Phi + A2*Phi2 + A3*Phi3
with Tc: Condensation temperature in C and Phi as pressure ratio Pc/P0
The constants have been determined as shown below:

A0 = B00 + B01*TC  
B00 = 0.8214478092 B01 = 0.00329997321
A1 = B10 + B11*TC  
B10 = 0.1172825484 B11 = -0.00207410084
A2 = B20 + B21*TC  
B20 = - 0.02282297747 B21 = 0.000414526908
A3 = B30 + B31*TC  
B30 = 0.001171081343 B31 = -2.174935134E-005

Isentropic efficiency

Etais = A0 + A1*Phi + A2*Phi2 + A3*Phi3 + A4*Phi4
with Tc: Condensation temperature in C and Phi as
pressure ratio Pc/P0
The constants have been determined as shown below:

A0= B00 + B01*TC  
B00 =- 1.683291391 B01 = 0.03134586271
A1 = B10 + B11*TC  
B10 = + 1.856838744 B11 = -0.02649334438
A2 = B20 + B21*TC  
B20 = -0.548216088 B21 = 0.0083381712
A3 = B30 + B31*TC  
B30 = + 0.07125904599 B31 = -0.001146177771
A4 = B40 + B41*TC  
B40 = - 0.003465252394 B41 = 5.826828736E-005

With the determined constants Copeland's data are reproduced better than 0.3% for the refrigeration capacity and better than 1.2 % for the power consumption of the compressor for -30°C<T0<7°C and 30°C<Tc<50°C.

Within the actual temperature range, the data for the refrigeration capacity are reproduced better than 0.2% and the data for the power consumption of the compressor are reproduced better than 2.3%.

The calculated volumetric efficiency is, however, greater than 1 which, according to Copeland, is due to the definition of geometric volume.

Copeland Scroll ZF33K4E with R404A

Volumetric efficiency

Etav = A0 + A1*Phi + A2*Phi2
with Tc: Condensation temperature in C and Phi as
pressure ratio Pc/P0
The constants have been determined as shown below:

A0 = B00 + B01*Tc  
B00 = 0.6982677504 B01 = 0.005518700035
A1 = B10 + B11*TC  
B10 = 0.1509323406 B11 = -0.002710157905
A2 = B20 + B21*TC  
B20 = - 0.01454138481 B21 = 0.0002681152023

Isentropic efficiency

Etais = A0 + A1*Phi + A2*Phi2 + A3Phi3
with Tc: Condensation temperature in C and Phi as
pressure ratio Pc/P0
The constants have been determined as shown below:

A0 = B00 + B01*Tc+B02*TC2  
B00 = -1.080523234 B01 = 0.04605533767
B02 = - 0.0002515889379  
A1 = B10 + B11*Tc+B12*TC2  
B10 = 0.996803734 B11 = - 0.03133601376
B12 = 0.0002370951748  
A2 = B20 + B21*Tc+B12*TC2  
B20 = -0.1695294746 B21 =+ 0.006000855424
B22 = - 5.354749707E-005  
A3 = B30 + B31*Tc+B32*Tc2  
B30 = 0.008334185331 B31 = - 0.0003219284941
B32 = + 3.138676947E-006  

With the determined constants Copeland's data are reproduced better than 2.5% for the refrigeration capacity and better than 3.2 % for the power consumption of the compressor for -40°C<T0<5°C and 30°C<Tc<50°C.

Within the actual temperature range, the data for the refrigeration capacity are reproduced better than 1.4% and the data for the power consumption of the compressor are reproduced better than 0.7%.

The calculated volumetric efficiency is, however, greater than 1 which, according to Copeland, is due to the definition of geometric volume.

Table A7. Copeland Scroll ZK75K4E

T0 Tc Qdata Wdata Qfit Wfit DQ dW ηv ηis
C C W W W W % % - -
7 30 38180 8830 38158 8883 -0.06 0.60 0.991 0.433
5 30 35850 8500 35805 8559 -0.13 0.69 0.994 0.464
0 30 30520 7780 30455 7812 -0.21 0.41 1.000 0.537
-5 30 25800 7190 25772 7186 -0.11 -0.06 1.004 0.597
-10 30 21660 6720 21662 6691 0.01 -0.44 1.008 0.637
-15 30 18020 6330 18048 6314 0.15 -0.26 1.008 0.656
-20 30 14850 6000 14869 6003 0.13 0.05 1.003 0.654
-25 30 12080 5700 12082 5671 0.02 -0.50 0.993 0.642
-30 30 9650 5420 9670 5401 0.21 -0.35 0.975 0.611
7 40 33640 9450 33735 9433 0.28 -0.18 1.004 0.567
5 40 31580 9190 31642 9205 0.20 0.16 1.006 0.586
0 40 26860 8630 26875 8664 0.06 0.39 1.009 0.626
-5 40 22700 8160 22697 8194 -0.01 0.41 1.010 0.652
-10 40 19050 7760 19030 7801 -0.10 0.53 1.010 0.661
-15 40 15850 7400 15815 7449 -0.22 0.66 1.006 0.656
-20 40 13050 7060 13005 7075 -0.35 0.22 0.999 0.642
-25 40 10600 6710 10572 6790 -0.26 1.19 0.988 0.611
7 50 28480 10620 28463 10595 -0.06 -0.23 1.011 0.636
5 50 26710 10410 26706 10396 -0.02 -0.14 1.011 0.645
0 50 22680 9940 22697 9923 0.08 -0.17 1.012 0.661
-5 50 19160 9530 19183 9503 0.12 -0.28 1.013 0.665
-10 50 16080 9130 16104 9120 0.15 -0.11 1.012 0.657
-15 50 13400 8740 13414 8712 0.11 -0.32 1.010 0.643
-20 50 11060 8310 11074 8247 0.13 -0.76 1.005 0.626

Table A8. Copeland Scroll ZF33K4E

T0 Tc Qdata Wdata Qfit Wfit DQ dW ηv ηis
C C W W W W % % - -
5 30 35252 8142 35120 8400 0.38 -3.07 0.978 0.480
0 30 30239 7958 30180 7880 0.19 0.99 0.992 0.523
-5 30 25849 7578 25820 7400 0.11 2.41 1.007 0.567
-10 30 21988 7101 21980 6970 0.04 1.88 1.023 0.609
-15 30 18572 6603 18570 6580 0.01 0.35 1.037 0.645
-20 30 15526 6143 15520 6210 0.04 -1.07 1.048 0.668
-25 30 12775 5771 12770 5870 0.04 -1.69 1.049 0.667
-30 30 10246 5519 10220 5540 0.26 -0.38 1.033 0.634
-35 30 7858 5356 7820 5210 0.49 2.81 0.981 0.563
-40 30 5518 4870 5490 4880 0.50 -0.21 0.861 0.487
5 40 31579 9224 31760 9490 -0.57 -2.81 1.004 0.584
0 40 26993 9006 27100 8980 -0.40 0.29 1.013 0.605
-5 40 22968 8640 23010 8520 -0.18 1.41 1.022 0.626
-10 40 19423 8186 19440 8090 -0.09 1.18 1.031 0.643
-15 40 16285 7698 16300 7690 -0.09 0.10 1.036 0.654
-20 40 13490 7226 13520 7310 -0.22 -1.15 1.037 0.652
-25 40 10973 6816 11020 6940 -0.43 -1.79 1.026 0.632
-30 40 8669 6500 8740 6580 -0.81 -1.22 0.994 0.586
-35 40 6506 6244 6600 6210 -1.42 0.54 0.923 0.509
-40 40 4405 5644 4520 5830 -2.54 -3.18 0.781 0.423
5 50 26737 10580 26990 10820 -0.94 -2.22 1.013 0.635
0 50 22792 10360 22830 10330 -0.17 0.29 1.017 0.636
-5 50 19333 10020 19240 9880 0.48 1.42 1.021 0.635
-10 50 16299 9598 16160 9450 0.86 1.57 1.024 0.632
-15 50 13638 9132 13510 9040 0.95 1.01 1.026 0.624
-20 50 11302 8658 11230 8650 0.64 0.09 1.026 0.609
-25 50 9245 8215 9220 8250 0.27 -0.43 1.020 0.584
-30 50 7424 7838 7430 7850 -0.08 -0.15 1.004 0.544
-35 50 5794 7536 5780 7440 0.24 1.29 0.969 0.487
-40 50 4307 7179 4180 7000 3.05 2.56 0.900 0.419

Figure A11. Volumetric efficiency for Copeland Scroll ZS75K4-TDW

Figure A11. Volumetric efficiency for Copeland Scroll ZS75K4-TDW

Figure A12. Isentropic efficiency for Copeland Scroll ZS75K4E-TDW

Figure A12. Isentropic efficiency for Copeland Scroll ZS75K4E-TDW

Figure A13. Volumetric efficiency for Copeland Scroll ZF33K4E-TDW

Figure A13. Volumetric efficiency for Copeland Scroll ZF33K4E-TDW

Figure A14. Isentropic efficiency for Copeland Scroll ZF33K4E-TDW

Figure A14. Isentropic efficiency for Copeland Scroll ZF33K4E-TDW

 

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Version 1.0 September 2004, © Danish Environmental Protection Agency