TEST REPORT #69

Air-Conditioning, Heating, and Refrigeration Institute (AHRI) Low-GWP Alternative Refrigerants Evaluation Program (Low-GWP AREP)

TEST REPORT #69 Compressor Calorimeter Test of Refrigerant ARM-20b in a R-404A Reciprocating Compressors

Laurence Pérouffe Gaël Renevier Tecumseh Products Company 2 avenue Blaise Pascal 38090 Vaulx Milieu - France November 11, 2016 This report has been made available to the public as part of the author company’s participation in the AHRI’s Low-GWP AREP.

1

1. Introduction:

This report covers the calorimeter testing results of refrigerant blend ARM20b performed

by Tecumseh Products Company (Tecumseh) in the framework of the AHRI Low-GWP

AREP II study. The testing was done from June to September 2015 in Tecumseh’s ISO

17025 accredited Research and Development lab facility located in La Verpillière,

France. The refrigerant was tested with two Tecumseh reciprocating compressors

primarily approved for R-404A:

FH2511Z for low back pressure (LBP) commercial refrigeration type application

FH4540Z for high back pressure (HBP) commercial refrigeration type application

No optimization, oil or hardware changes were made to account for the alternative blend.

2. Details of Test Setup:

a. Description of Test Refrigerant-Lubricant and Charge

Refrigerant or refrigerant blend tested

o R404A supplied by Gazechim

o ARM20b supplied by Arkema

Lubricant

o POE oil viscosity grade 32 cSt

o FH2511Z charge 1625 cubic centimeter

o FH4540Z charge 1480 cubic centimeter

o

b. Description of Compressors

Hermetic two piston reciprocating compressors made by Tecumseh

no compressor modifications or accessories in place during test

2

Model FH2511Z FH4540Z

Application LBP HBP

S/N 54 L2114 90 145249 C 54 L2114 90 145228 C

Ambient temperature 95°F (35°C) 95°F (35°C)

Subcooling 0 K 0 K

Fan cooling yes yes

Fan airflow 530 CFM (900m3/h) 2*530 CFM (1800 m3/h)

Temperature

determination

Dew point Dew point

Motor type CSR High Start Torque CSR High Start Torque

Power supply 230V 50Hz 230V 50Hz

Phase 1 1

Displacement 4.53 cubic inch 4.53 cubic inch

c. Orientation of air flow in relation to the compressor

FH2511Z

FH4540Z

900m3/h

152mm

Fan Ø 250mm

152mm

2 fans Ø 250mm

900m3/h

3

d. Description and Size of Test Loop

The performance tests were done on a secondary fluid calorimeter on the suction side

according method A of standard NF EN 13771-1 : 2003. A direct expansion coil serves as

a primary evaporator. This evaporator is suspended in the upper part of a pressure-tight

and heat-insulated vessel. A heater is located in the base of this vessel, which is charged

with a secondary fluid so that the heater is well below the liquid surface.

As per NF EN 13771-1 : 2003 clause 4.2.2 this calorimeter is in constant use and is

subject to periodical calibration in accordance with EN ISO 9001 therefore a second

concurrent test (i.e mass flow meter) is not necessary

The refrigerant flow is controlled by a constant-pressure and heat-insulated expansion

device located close to the calorimeter. The calorimeter is insulated and exposed to the

ambient temperature surrounding the compressor ; the secondary fluid temperature is

maintained to the same temperature by varying the heater power in such a manner that

there is no heat exchange between the calorimeter and the ambient.

The suction gas temperature is adjusted to basic test condition by injecting refrigerant

collected at the condenser outlet in the suction line via an expansion device.

1 Refrigerant gas at the compressor inlet at the basic test conditions 2 Refrigerant gas at the compressor outlet 5 Refrigerant liquid at the inlet of the expansion device 6 Refrigerant gas at the outlet of the calorimeter A Compressor B Condenser C Expansion device E Heater F Calorimeter G Injection expansion device ts Temperature of the secondary fluid

4

e. Instrument uncertainties

Expanded uncertainties with a coverage factor k=2 assuring a level of confidence of 95%

Instrument Measurement Full Scale Uncertainty

of measured value

Druck transducer Suction pressure 145 psi (10 bars) ± 0.92%

Druck transducer Discharge pressure 580 psi (40 bars) ± 0.92%

RTD Pt100 Temperatures 140°F (60°C) ± 0.52°F / 0.29°C

Zimmer LMG450 Power 600V 16A ± 0.5%

Calorimeter Refrigerating capacity 82 kBTU/h (24kW) ± 0.93%

f. Source of thermodynamic properties

R404A : from ASEREP32.DLL version 3.45

ARM20b : Refprop mixture and interaction files provided by Arkema

g. Compressor operating conditions during test

Operating map points were measured first with R404A then with ARM20b

with 10K (18°F) superheat and with fixed 20°C (68°F) suction gas

temperature according NF EN 12900: 2013.

5

3. Results

All compressor tests are performed at a dew point temperature for suction and discharge pressure conditions, per AHRI

Standard 540 requirements. This does not have an impact on comparing compressor performance between two or more

refrigerants that do not exhibit temperature glide. However, when refrigerants exhibit temperature glide, it is important to note

that actual systems operate closer to the mid-point condition. When comparing compressor performance of one refrigerant with

glide to another refrigerant without glide, or comparing two refrigerants with significantly different glides, comparison at

pressures corresponding to the midpoint of the temperature glide rather than the dew point will yield results that are more

representative of actual operation in a system. The total temperature glide for ARM20b is 6.2K at 1 bar and 4.2K at 30 bars.

R404A is near azeotropic blend with small temperature glide less than 1K and from practical purposes can be neglected.

3.1. Reference measurement with R404A

3.1.1. Low Back Pressure Compressor FH2511Z

3.1.1.1. Operating map with 10K superheat (18°F)

*measured on discharge line at 6” from compressor discharge port

Table 3.1.1.1a, Measured data of LBP compressor FH2511Z, R404A, 10K superheat

°F °C °F °C °F °C °F °K °F °C °F °C °F/°K BTU/hr W Lbm/hr Kg/hr A W BTU/Whr W/W

95 35 -31 -35 86 30 18 10 -13 -25 239 115 0 5198 1523.439 109.1 49.47 8.9 1587.7 3.27 0.96

95 35 -13 -25 86 30 18 10 5 -15 219 104 0 9559 2801.335 190.1 86.21 10.8 2055.3 4.65 1.36

95 35 14 -10 91 33 18 10 32 0 194 90 0 19530 5723.673 372.8 169.09 14.8 2979.7 6.55 1.92

95 35 -31 -35 104 40 18 10 -13 -25 254 123 0 3728 1092.665 91.4 41.47 8.6 1506.3 2.48 0.73

95 35 -31 -35 104 40 18 10 -13 -25 256 125 0 3704 1085.421 90.8 41.21 8.6 1510.1 2.45 0.72

95 35 -31 -35 104 40 18 10 -13 -25 254 123 0 3700 1084.447 90.8 41.19 8.6 1507.8 2.45 0.72

95 35 -13 -25 104 40 18 10 5 -15 240 115 0 7464 2187.62 172.2 78.13 10.9 2090.6 3.57 1.05

95 35 14 -10 104 40 18 10 32 0 207 97 0 16888 4949.249 357.8 162.31 15.4 3111.0 5.43 1.59

95 35 -22 -30 122 50 18 10 -4 -20 261 127 0 3783 1108.582 109.4 49.62 9.6 1763.6 2.14 0.63

95 35 14 -10 122 50 18 10 32 0 224 107 0 13233 3878.151 333.0 151.06 16.0 3241.3 4.08 1.20

95 35 -4 -20 122 50 18 10 14 -10 244 118 0 7482 2192.677 201.1 91.24 12.4 2439.3 3.07 0.90

95 35 -22 -30 140 60 18 10 -4 -20 277 136 0 2265 663.8812 86.2 39.11 9.1 1641.1 1.38 0.40

95 35 -4 -20 140 60 18 10 14 -10 263 129 0 5073 1486.835 176.3 79.99 12.3 2416.2 2.10 0.62

95 35 14 -10 140 60 18 10 32 0 246 119 0 9394 2753.251 301.0 136.51 16.2 3283.4 2.86 0.84

EER COPSubcooling

temperatureCooling Capacity Mass flow Amps

Input

power

Ambient

temperature

Evaporating

temperature

Condensing

temperature

Superheating

temperature

Return Gas

Temperature

Discharge

temperature*

6

10-Coefficient polynomial equation

The coefficient data was derived from ASEVAL Software version 2.2. The coefficients are based

on dew point temperatures, with input temperatures to/tc in °C.

Capacity/Power/Mass Flow=

C1+C2*to+C3*tc+C4*to^2+C5*to*tc+C6*tc^2+C7*to^3+C8*to^2*tc+C9*to*tc^2+C10*tc^3

These coefficients are only applicable within the standard operating envelope of the compressor:

Figure 1, FH2511Z Operating Map, R404A, 10K superheat or 20°C return gas

Table 3.1.1.1b, Coefficients of LBP compressor FH2511Z, R404A, 10K superheat

Coefficient Capacity

(W)

Power

(W)

Mass Flow

(kg/h)

COP

(W/W)

C1 14369.013 3083.364 288.8910288 4.4701900

C2 546.7606 73.3954 10.2651520 0.0734044

C3 -156.7013 30.3646 -0.4864344 -0.0787708

C4 6.964887 0.966514 0.1271815 -0.0001418

C5 -4.919606 0.432859 -0.0025174 -0.0008963

C6 -0.216826 -0.199276 -0.0149688 0.0004923

C7 0.026989 0.007011 0.0005583 -0.0000031

C8 -0.046018 0.000196 -0.0000244 0.0000025

C9 -0.003879 0.001546 -0.0002736 0.0000025

C10 0.002354 -0.000078 0.0000309 -0.0000018

Evaporating temperature (°C)

Co

nd

ensi

ng

tem

per

atu

re (

°C)

7

Figure 1a, FH2511Z Capacity (W), R404A, 10K superheat

Figure 1b, FH2511Z Power Input (W), R404A, 10K superheat

8

Figure 1c, FH2511Z Mass Flow (kg/s), R404A, 10K superheat

Figure 1d, FH2511Z COP (W/W), R404A, 10K superheat

9

3.1.1.2. Operating map with 20°C Return Gas Temperature (68°F)

Table 3.1.1.2a, Measured data of LBP compressor FH2511Z, R404A, 20°C RGT

Table 3.1.1.2b, Coefficients of LBP compressor FH2511Z,

R404A, 20°C RGT


95 35 -40 -40 86 30 108 60 68 20 247 120 0 4208 1233.1 65.4 29.67 8.6 1345.0 3.13 0.92

95 35 -31 -35 86 30 99 55 68 20 241 116 0 6190 1814.1 96.6 43.82 9.4 1599.1 3.87 1.13

95 35 -13 -25 86 30 81 45 68 20 220 104 0 11129 3261.6 175.4 79.54 11.1 2080.6 5.35 1.57

95 35 14 -10 86 30 54 30 68 20 192 89 0 22377 6558 360.3 163.42 14.5 2956.4 7.57 2.22

95 35 -31 -35 104 40 99 55 68 20 258 126 0 4587 1344.4 80.1 36.33 9.1 1541.6 2.98 0.87

95 35 -13 -25 104 40 81 45 68 20 239 115 0 8980 2631.9 158.6 71.93 11.2 2119.7 4.24 1.24

95 35 -40 -40 104 40 108 60 68 20 261 127 0 3106 910.3 54.1 24.55 8.5 1308.5 2.37 0.70

95 35 14 -10 104 40 54 30 68 20 208 98 0 18865 5528.9 342.1 155.16 15.2 3130.3 6.03 1.77

95 35 -22 -30 122 50 90 50 68 20 261 127 0 4851 1421.6 98.0 44.45 10.0 1782.6 2.72 0.80

95 35 -4 -20 122 50 72 40 68 20 243 117 0 9175 2688.9 188.2 85.38 12.4 2449.9 3.74 1.10

95 35 14 -10 122 50 54 30 68 20 225 107 0 15056 4412.5 315.7 143.20 15.6 3219.6 4.68 1.37

95 35 -22 -30 140 60 90 50 68 20 280 138 0 3280 961.2 80.0 36.27 9.6 1683.3 1.95 0.57

95 35 -4 -20 140 60 72 40 68 20 264 129 0 6564 1923.8 163.2 74.01 12.3 2417.5 2.72 0.80

95 35 14 -10 140 60 54 30 68 20 243 117 0 11217 3287.3 285.6 129.54 15.8 3267.8 3.43 1.01

Ambient

temperature

Evaporating

temperature

Condensing

temperature

Superheating

temperature

Subcooling

temperatureCooling Capacity

Return Gas

TemperatureCOPMass flow

Discharge

temperature*Amps

Input

powerEER


(W)

Power

(W)

Mass Flow

(kg/h)

COP

(W/W)

C1 14369.679 2553.765 279.4901940 5.1270600

C2 502.5065 48.2626 10.4675526 0.0901298

C3 -145.1798 45.3070 -0.7101379 -0.1002510

C4 5.797849 0.564216 0.1438886 0.0003057

C5 -4.524020 1.036213 -0.0181935 -0.0015710

C6 -0.235993 -0.260863 -0.0089459 0.0007675

C7 0.018827 0.005132 0.0007453 0.0000006

C8 -0.044178 0.005540 -0.0002151 -0.0000067

C9 -0.003393 -0.000484 -0.0001207 0.0000059

C10 0.001827 -0.000276 0.0000099 -0.0000032

10

Figure 2a, FH2511Z Capacity (W), R404A, 20°C RGT

Figure 2b, FH2511Z Power Input (W), R404A, 20°C RGT

11

Figure 2c, FH2511Z Mass Flow (kg/s), R404A, 20°C RGT

Figure 2d, FH2511Z COP (W/W), R404A, 20°C RGT

12

3.1.1.3. AREP test conditions for commercial refrigeration applications

Table 3.1.1.3, Measured data of LBP compressor FH2511Z, R404A, AREP rating points


95 35 -10 -23.3 120 48.9 20 11.1 10 -12.2 217 103 0 5906 1731 157.5 71.4 11.5 2189 2.70 0.79

95 35 -10 -23.3 120 48.9 40 22.2 30 -1.1 228 109 0 6788 1989 162.3 73.6 11.6 2232 3.04 0.89

95 35 -10 -23.3 120 48.9 75 41.7 65 18.3 248 120 0 7848 2300 159.5 72.4 11.7 2238 3.51 1.03

95 35 -25 -31.7 105 40.6 20 11.1 -5 -20.6 217 103 0 4310 1263 104.3 47.3 10.0 1753 2.46 0.72

95 35 -25 -31.7 105 40.6 40 22.2 15 -9.4 226 108 0 4701 1378 102.9 46.7 9.8 1727 2.72 0.80

95 35 -25 -31.7 105 40.6 90 50.0 65 18.3 252 122 0 5818 1705 104.0 47.2 9.8 1732 3.36 0.98

95 35 -40 -40.0 105 40.6 20 11.1 -20 -28.9 234 112 0 2047 600 52.4 23.8 8.7 1351 1.52 0.44

95 35 -40 -40.0 105 40.6 40 22.2 0 -17.8 239 115 0 2257 661 52.3 23.7 8.6 1327 1.70 0.50

95 35 -40 -40.0 105 40.6 105 58.3 65 18.3 260 127 0 3050 894 54.1 24.6 8.5 1294 2.36 0.69

EER COPSubcooling


Input

power

Ambient

temperature

Evaporating

temperature

Condensing

temperature

Superheating

temperature

Return Gas

Temperature

Discharge

temperature*

13


3.1.2. High Back Pressure Compressor FH4540Z


Table 3.1.2.1a, Measured data of HBP compressor FH4540Z, R404A, 10K superheat


95 35 -13 -25 86 30 18 10 5 -15 182 83 0 8783 2573.95 174.5 79.15 11.3 2096.7 4.19 1.23

95 35 -4 -20 86 30 18 10 14 -10 170 77 0 12151 3561.12 235.9 107.00 12.0 2320.4 5.24 1.53

95 35 -4 -20 105 41 18 10 14 -10 190 88 0 9231 2705.3 208.3 94.50 12.2 2364.6 3.90 1.14

95 35 5 -15 122 50 18 10 23 -5 199 93 0 9320 2731.36 243.1 110.27 13.1 2640.2 3.53 1.03

95 35 14 -10 104 40 18 10 32 0 171 77 0 17125 5018.89 363.2 164.74 14.2 2908.7 5.89 1.73

95 35 14 -10 86 30 18 10 32 0 154 68 0 21369 6262.62 395.2 179.27 13.8 2814.7 7.59 2.22

95 35 14 -10 140 60 18 10 32 0 212 100 0 8704 2550.88 278.0 126.09 14.2 2923.9 2.98 0.87

95 35 23 -5 140 60 18 10 41 5 204 96 0 12003 3517.71 368.3 167.05 15.8 3319.0 3.62 1.06

95 35 23 -5 122 50 18 10 41 5 184 84 0 17175 5033.51 419.3 190.18 15.7 3286.0 5.23 1.53

95 35 32 0 87 30 18 10 50 10 147 64 0 33475 9810.43 593.2 269.07 15.8 3306.2 10.12 2.97

95 35 32 0 106 41 18 10 50 10 163 73 0 27410 8033.04 561.2 254.58 16.5 3478.2 7.88 2.31

95 35 41 5 123 50 18 10 59 15 177 80 0 27396 8029 636.0 288.46 18.4 3930.4 6.97 2.04

95 35 41 5 140 60 18 10 59 15 193 89 0 20501 6008.31 587.7 266.57 19.1 4099.5 5.00 1.47

95 35 50 10 109 43 18 10 68 20 162 72 0 40025 11730.2 797.2 361.61 19.2 4137.4 9.67 2.84

95 35 59 15 122 50 18 10 77 25 171 77 0 41516 12167.2 909.7 412.63 21.5 4660.7 8.91 2.61

95 35 59 15 124 51 18 10 77 25 174 79 0 40378 11833.6 904.4 410.24 21.6 4694.9 8.60 2.52

95 35 59 15 141 60 18 10 77 25 189 87 0 31550 9246.53 855.3 387.94 22.6 4917.9 6.42 1.88

Input

powerEER COP

Discharge

temperature

Subcooling


Ambient

temperature

Evaporating

temperature

Condensing

temperature

Superheating

temperature

Return Gas

Temperature

14

Figure 1, FH4540Z Operating Map, R404A, 10K superheat or 20°C return gas

Table 3.1.2.1b, Coefficients of HBP compressor FH4540Z, R404A, 10K superheat


(W)

Power

(W)

Mass Flow

(kg/h)

COP

(W/W)

C1 13326.096 2508.119 268.6282308 5.2382700C2 524.7443 51.3521 9.5318809 0.1043990

C3 -66.7809 32.0033 1.1435357 -0.0866235

C4 7.797523 1.072062 0.1324144 -0.0000715

C5 -2.700976 -0.257839 0.0370149 -0.0008640

C6 -1.973267 -0.200727 -0.0415247 0.0004443

C7 0.038017 0.014613 0.0008197 -0.0000054

C8 -0.064263 -0.016387 -0.0003574 0.0000044

C9 -0.032803 0.010673 -0.0005711 -0.0000031

C10 0.011321 -0.000053 0.0001193 -0.0000017

Co

nd

ensi

ng

tem

per

atu

re (

°C)

Evaporating temperature (°C)

15

Figure 3a, FH4540Z Capacity (W), R404A, 10K superheat

Figure 3b, FH4540Z Power Input (W), R404A, 10K superheat

16

Figure 3c, FH4540Z Mass Flow (kg/s), R404A, 10K superheat

Figure 3d, FH4540Z COP (W/W), R404A, 10K superheat

17


Table 3.1.2.2a, Measured data of HBP compressor FH4540Z, R404A, 20°C RGT


95 35 5 -15 123 51 63 35 68 20 229 110 0 11030 3232.48 231.0 104.78 13.0 2607.0 4.23 1.24

95 35 14 -10 122 50 54 30 68 20 217 103 0 14884 4361.94 311.2 141.18 14.2 2928.9 5.08 1.49

95 35 23 -5 122 50 45 25 68 20 205 96 0 18552 5437.03 393.3 178.38 15.4 3234.4 5.74 1.68

95 35 32 0 122 50 36 20 68 20 194 90 0 23113 6773.89 497.9 225.85 16.8 3559.8 6.49 1.90

95 35 40 4 123 51 28 16 68 20 187 86 0 27244 7984.39 604.0 273.98 18.1 3870.4 7.04 2.06

95 35 50 10 125 52 18 10 68 20 177 80 0 32200 9436.86 746.2 338.47 19.7 4253.4 7.57 2.22

95 35 59 15 124 51 9 5 68 20 171 77 0 39008 11432 911.6 413.51 21.1 4573.3 8.53 2.50

95 35 -4 -20 86 30 72 40 68 20 209 98 0 13971 4094.46 221.1 100.30 11.6 2246.7 6.22 1.82

95 35 -4 -20 86 30 72 40 68 20 208 98 0 13940 4085.45 220.7 100.10 11.6 2242.4 6.22 1.82

95 35 14 -10 104 40 54 30 68 20 199 93 0 18640 5462.74 337.1 152.91 13.8 2838.9 6.57 1.92

95 35 23 -5 140 60 45 25 68 20 224 106 0 13454 3943.12 347.7 157.73 15.6 3268.7 4.12 1.21

95 35 23 -5 140 60 45 25 68 20 224 106 0 13501 3956.65 348.3 157.98 15.6 3270.6 4.13 1.21

95 35 23 -5 140 60 45 25 68 20 223 106 0 13591 3983.02 350.9 159.18 15.7 3297.2 4.12 1.21

95 35 41 5 104 40 27 15 68 20 165 74 0 34917 10233.2 655.3 297.26 17.4 3713.1 9.40 2.76

95 35 50 10 104 40 18 10 68 20 157 69 0 41237 12085.2 791.1 358.82 18.7 4016.3 10.27 3.01

95 35 59 15 140 60 9 5 68 20 181 83 0 29492 8643.26 848.6 384.92 22.0 4775.2 6.18 1.81

95 35 59 15 105 41 9 5 68 20 150 66 0 47806 14010.5 945.4 428.82 20.2 4363.1 10.96 3.21

EER COPSubcooling


Input

power

Ambient

temperature

Evaporating

temperature

Condensing

temperature

Superheating

temperature

Return Gas

Temperature

Discharge

temperature

18

Table 3.1.2.1b, Coefficients of HBP compressor FH4540Z, R404A, 20°C RGT

Figure 4a, FH4540Z Capacity (W), R404A, 20°C RGT


(W)

Power

(W)

Mass Flow

(kg/h)

COP

(W/W)

C1 11712.109 2332.989 220.3791048 5.1250200

C2 470.7337 39.4797 9.1076040 0.0986384

C3 10.5002 33.7815 2.3357811 -0.0768698

C4 7.456463 0.489549 0.1856955 0.0003109

C5 -2.367358 0.410434 0.0554095 -0.0012542

C6 -2.839005 -0.132419 -0.0477028 0.0003275

C7 0.033223 0.004246 0.0017548 0.0000020

C8 -0.083890 -0.002788 -0.0005385 -0.0000073

C9 -0.031757 0.001918 -0.0007562 0.0000026

C10 0.013330 -0.001143 0.0000708 -0.0000015

19

Figure 4b, FH4540Z Power Input (W), R404A, 20°C RGT

Figure 4c, FH4540Z Mass Flow (kg/s), R404A, 20°C RGT

20

Figure 4d, FH4540Z COP (W/W), R404A, 20°C RGT

21


Table 3.1.1.3, Measured data of HBP compressor FH4540Z, R404A, AREP rating points

°F °C °F °C °F °C °F °K °F °C °F °C °K BTU/hr W Lbm/hr Kg/hr A W BTU/Whr W/W

95 35 45 7.2 130 54.4 20 11.1 65 18.3 186 86 8.3 32308 9468.64 681.9 309.3 19.2 4131.4 7.82 2.29

95 35 20 -6.7 120 48.9 20 11.1 40 4.4 189 87 0 16112 4721.9 385.4 174.8 14.9 3119.9 5.16 1.51

95 35 20 -6.7 120 48.9 40 22.3 60 15.6 206 97 0 17360 5087.8 373.0 169.2 14.9 3120.9 5.56 1.63

95 35 20 -6.7 120 48.9 45 25.0 65 18.3 209 98 0 17699 5187.2 371.4 168.5 14.9 3122.0 5.67 1.66

EER COPSubcooling


Input

power

Ambient

temperature

Evaporating

temperature

Condensing

temperature

Superheating

temperature

Return Gas

Temperature

Discharge

temperature

22

3.2. Measurement with ARM20b

3.2.1. Low Back Pressure Compressor FH2511Z


Table 3.2.1.1a, Measured data of LBP compressor FH2511Z, ARM20b, 10K superheat


95 35 -40 -40 103 40 18 10 -22 -30 225 107 0 1561 457 23.4 10.62 8.1 1137 1.37 0.40

95 35 -40 -40 85 30 18 10 -22 -30 220 105 0 2438 714 33.0 14.95 8.5 1208 2.02 0.59

95 35 -31 -35 121 50 18 10 -13 -25 240 116 0 1807 529 30.0 13.59 8.5 1291 1.40 0.41

95 35 -31 -35 103 40 18 10 -13 -25 231 111 0 2810 823 41.4 18.76 8.7 1354 2.08 0.61

95 35 -31 -35 85 29 18 10 -13 -25 221 105 0 4347 1274 57.6 26.12 8.9 1433 3.03 0.89

95 35 -22 -30 139 60 18 10 -4 -20 252 122 0 2087 612 39.3 17.81 9.0 1483 1.41 0.41

95 35 -22 -30 121 49 18 10 -4 -20 246 119 0 3251 953 52.7 23.92 9.4 1576 2.06 0.60

95 35 -13 -25 86 30 18 10 5 -15 207 97 0 9044 2651 116.0 52.61 10.5 1899 4.76 1.40

95 35 -13 -25 103 40 18 10 5 -15 223 106 0 7340 2151 103.8 47.09 10.7 1963 3.74 1.10

95 35 -4 -20 139 60 18 10 14 -10 254 123 0 5650 1656 101.4 45.99 11.5 2199 2.57 0.75

95 35 -4 -20 121 50 18 10 14 -10 237 114 0 7934 2325 123.5 56.01 11.7 2249 3.53 1.03

95 35 14 -10 86 30 18 10 32 0 179 82 0 20472 6000 250.1 113.43 13.1 2602 7.87 2.31

95 35 14 -10 104 40 18 10 32 0 201 94 0 17106 5013 230.5 104.53 13.6 2739 6.25 1.83

95 35 14 -10 121 50 18 10 32 0 219 104 0 14123 4139 211.2 95.82 14.1 2852 4.95 1.45

95 35 14 -10 139 60 18 10 32 0 241 116 0 10987 3220 187.9 85.25 14.4 2929 3.75 1.10

EER COPSubcooling


Input

power

Ambient

temperature

Evaporating

temperature

Condensing

temperature

Superheating

temperature

Return Gas

Temperature

Discharge

temperature*

23

Table 3.2.1.1b, Coefficients of LBP compressor

FH2511Z, ARM20B, 10K Superheat


(W)

Power

(W)

Mass Flow

(kg/h)

COP

(W/W)

C1 11574.945 1707.295 157.30304 4.4700031

C2 411.2839 -36.9229 4.9994362 0.0806987

C3 -47.8184 42.3753 1.1431554 -0.0485819

C4 3.348622 -2.257184 0.0175624 -0.0003793

C5 -2.779711 1.315410 0.0100511 -0.0010267

C6 -1.733436 -0.206124 -0.0405306 -0.0003070

C7 -0.008982 -0.025813 -0.0004511 -0.0000069

C8 -0.029529 0.008902 -0.0000252 -0.0000005

C9 -0.011623 -0.001504 -0.0002932 0.0000022

C10 0.011806 -0.000360 0.0002202 0.0000044

24

Figure 5a, FH2511Z Capacity (W), ARM20B, 10K Superheat

Figure 5b, FH2511Z Power Input (W), ARM20B, 10K Superheat

25

Figure 5c, FH2511Z Mass Flow (kg/s), ARM20B, 10K Superheat

Figure 5d, FH2511Z COP (W/W), ARM20B, 10K Superheat

26


Table 3.2.1.2a, Measured data of LBP compressor FH2511Z, ARM20B, 20°C RGT


95 35 -40 -40 86 30 18 10 -22 -30 240 116 0 3637 1066 39.5 17.89 8.2 1180 3.08 0.90

95 35 -31 -35 103 40 18 10 -13 -25 253 123 0 3910 1146 46.1 20.92 8.7 1365 2.86 0.84

95 35 -31 -35 87 30 18 10 -13 -25 251 122 0 5193 1522 56.7 25.70 8.9 1414 3.67 1.08

95 35 -22 -30 139 60 18 10 -4 -20 272 133 0 2965 869 43.4 19.69 9.1 1491 1.99 0.58

95 35 -22 -30 121 50 18 10 -4 -20 262 128 0 4312 1264 56.2 25.47 9.2 1548 2.79 0.82

95 35 -13 -25 139 59 18 10 5 -15 282 139 0 4522 1325 66.4 30.13 10.0 1785 2.53 0.74

95 35 -13 -25 86 30 18 10 5 -15 240 116 0 10386 3044 113.6 51.52 10.4 1897 5.48 1.60

95 35 -13 -25 105 41 18 10 5 -15 255 124 0 8244 2416 98.7 44.76 10.5 1920 4.29 1.26

95 35 -4 -20 139 60 18 10 14 -10 278 137 0 6776 1986 100.2 45.46 11.5 2199 3.08 0.90

95 35 -4 -20 105 41 18 10 14 -10 247 120 0 11157 3270 134.5 61.03 11.5 2210 5.05 1.48

95 35 -4 -20 121 49 18 10 14 -10 272 133 0 9178 2690 120.6 54.69 11.6 2236 4.10 1.20

95 35 -4 -20 121 50 18 10 14 -10 263 128 0 9147 2681 120.2 54.54 11.7 2247 4.07 1.19

95 35 14 -10 92 34 18 10 32 0 217 103 0 20597 6036 236.1 107.08 13.3 2658 7.75 2.27

95 35 14 -10 109 43 18 10 32 0 229 110 0 17785 5212 221.4 100.43 13.9 2805 6.34 1.86

95 35 14 -10 121 50 18 10 32 0 249 121 0 15444 4526 205.8 93.36 14.1 2867 5.39 1.58

95 35 14 -10 121 50 18 10 32 0 243 117 0 15508 4545 206.8 93.80 14.2 2879 5.39 1.58

95 35 14 -10 139 60 18 10 32 0 265 130 0 12173 3568 182.7 82.87 14.5 2970 4.10 1.20

EER COPSubcooling


Input

power

Ambient

temperature

Evaporating

temperature

Condensing

temperature

Superheating

temperature

Return Gas

Temperature

Discharge

temperature*

27

Table 3.2.1.2b, Coefficients of LBP compressor FH2511Z,

ARM20B, 20°C RGT


(W)

Power

(W)

Mass Flow

(kg/h)

COP

(W/W)

C1 10357.960 374.290 -0.01487 5.6300301

C2 276.0274 -56.4340 0.3133715 0.0951387

C3 -11.6614 122.2170 9.4464872 -0.1185988

C4 0.898478 -1.830284 -0.0632484 -0.0001236

C5 0.688752 2.574762 0.1389190 -0.0016138

C6 -1.518850 -1.670852 -0.1940623 0.0012180

C7 -0.023998 -0.013513 -0.0010332 -0.0000102

C8 -0.000808 0.020496 0.0010057 -0.0000113

C9 -0.032970 -0.008279 -0.0011951 0.0000037

C10 0.005587 0.009282 0.0011904 -0.0000071

28

Figure 6a, FH2511Z Capacity (W), ARM20B, 20°C RGT

Figure 6b, FH2511Z Capacity (W), ARM20B, 20°C RGT

29

Figure 6c, FH2511Z Mass Flow(kg/s), ARM20B, 20°C RGT

Figure 6d, FH2511Z COP (W/W), ARM20B, 20°C RGT

30


Table 3.2.1.3, Measured data of LBP compressor FH2511Z, ARM20B, AREP rating points


95 35 -40 -40.0 105 40.6 20 11.1 -20 -28.9 252 122 0 1485 435 22.4 10.1 8.1 1119 1.33 0.39

95 35 -40 -40.0 105 40.6 40 22.2 0 -17.8 240 115 0 1500 440 21.3 9.7 8.1 1112 1.35 0.40

95 35 -40 -40.0 105 40.6 105 58.3 65 18.3 244 118 0 2272 666 27.0 12.2 9.2 1118 2.03 0.60

95 35 -25 -31.7 105 40.6 20 11.1 -5 -20.6 242 117 0 3902 1144 56.7 25.7 8.1 1518 2.57 0.75

95 35 -25 -31.7 105 40.6 40 22.2 15 -9.4 247 120 0 4318 1266 59.2 26.8 10.8 1528 2.83 0.83

95 35 -25 -31.7 105 40.6 90 50.0 65 18.3 263 129 0 5230 1533 62.6 28.4 10.8 1532 3.42 1.00

95 35 -10 -23.3 120 48.9 20 11.1 10 -12.2 254 123 0 6471 1897 100.1 45.4 9.1 2036 3.18 0.93

95 35 -10 -23.3 120 48.9 40 22.2 30 -1.1 242 117 0 6818 1998 98.9 44.8 9.2 2018 3.38 0.99

95 35 -10 -23.3 120 48.9 75 41.7 65 18.3 240 115 0 7469 2189 97.6 44.3 10.9 2005 3.73 1.09

EER COPSubcooling


Input

power

Ambient

temperature

Evaporating

temperature

Condensing

temperature

Superheating

temperature

Return Gas

Temperature

Discharge

temperature*

31

3.2.2. High Back Pressure Compressor FH4540Z


Table 3.2.2.1a, Measured data of HBP compressor FH4540Z, ARM20B, 10K Superheat


95 35 -13 -25 85 30 18 10 5 -15 210 99 0 6971 2043 89.4 40.54 9.9 1714 4.07 1.19

95 35 -4 -20 85 30 18 10 14 -10 199 93 0 10165 2979 128.2 58.15 10.5 1920 5.29 1.55

95 35 -4 -20 103 40 18 10 14 -10 211 99 0 8182 2398 113.5 51.47 10.6 1957 4.18 1.23

95 35 -4 -20 121 50 18 10 14 -10 243 117 0 5983 1754 93.0 42.20 10.7 1968 3.04 0.89

95 35 14 -10 86 30 18 10 32 0 178 81 0 19846 5816 243.0 110.24 12.3 2422 8.19 2.40

95 35 14 -10 103 40 18 10 32 0 196 91 0 16392 4804 219.8 99.69 12.6 2502 6.55 1.92

95 35 14 -10 121 50 18 10 32 0 218 103 0 12629 3701 188.8 85.62 12.7 2527 5.00 1.46

95 35 14 -10 139 59 18 10 32 0 244 118 0 9305 2727 159.1 72.16 12.7 2534 3.67 1.08

95 35 23 -5 139 60 18 10 41 5 232 111 0 12835 3762 215.2 97.60 14.0 2863 4.48 1.31

95 35 32 0 105 41 18 10 50 10 181 83 0 27187 7968 356.2 161.59 14.7 3043 8.93 2.62

95 35 41 5 121 50 18 10 59 15 194 90 0 28536 8363 405.9 184.13 16.4 3457 8.26 2.42

95 35 41 5 139 60 18 10 59 15 215 102 0 22812 6685 368.3 167.05 17.2 3653 6.24 1.83

95 35 49 10 122 50 18 10 67 20 190 88 0 35326 10353 495.4 224.73 17.6 3753 9.41 2.76

95 35 49 10 139 60 18 10 67 20 209 99 0 28672 8403 454.9 206.35 18.6 3984 7.20 2.11

95 35 58 15 127 53 18 10 76 25 192 89 0 40620 11905 582.3 264.12 19.3 4162 9.76 2.86

95 35 58 15 139 60 18 10 76 25 205 96 0 35546 10417 554.6 251.58 20.2 4355 8.16 2.39

EER COPSubcooling


Input

power

Ambient

temperature

Evaporating

temperature

Condensing

temperature

Superheating

temperature

Return Gas

Temperature

Discharge

temperature*

32

Table 3.2.2.1b, Coefficients of HBP compressor FH4540Z, ARM20B, 10K Superheat

Figure 7a, FH4540Z Capacity (W), ARM20B, 10K Superheat


(W)

Power

(W)

Mass Flow

(kg/h)

COP

(W/W)

C1 12928.644 2315.863 178.98112 5.7330211

C2 560.3390 -0.8706 7.0089716 0.1699851

C3 -31.3211 22.9677 1.7331970 -0.0815886

C4 4.274890 -1.885482 0.0095740 0.0006737

C5 -3.516598 1.458067 0.0314302 -0.0026126

C6 -3.238650 -0.110104 -0.0716501 0.0000024

C7 -0.028366 -0.022744 -0.0009513 -0.0000044

C8 0.008245 0.034728 0.0014383 -0.0000078

C9 -0.015051 -0.002372 -0.0005163 0.0000111

C10 0.026395 -0.000181 0.0004875 0.0000033

33

Figure 7a, FH4540Z Power Input (W), ARM20B, 10K Superheat

Figure 7a, FH4540Z Mass Flow (kg/s), ARM20B, 10K Superheat

34

Figure 7a, FH4540Z COP (W/W), ARM20B, 10K Superheat

35


Table 3.2.2.2a, Measured data of HBP compressor FH4540Z, ARM20B, 20°C RGT


95 35 -13 -25 85 29 18 10 5 -15 247 119 0 8419 2467 91.8 41.64 9.8 1697 4.96 1.45

95 35 -4 -20 87 31 18 10 14 -10 235 113 0 11544 3383 127.7 57.92 10.5 1916 6.02 1.77

95 35 -4 -20 121 50 18 10 14 -10 271 133 0 7024 2059 92.4 41.90 10.6 1936 3.63 1.06

95 35 -3 -20 103 40 18 10 15 -10 250 121 0 9427 2763 112.5 51.02 10.6 1953 4.83 1.41

95 35 14 -10 89 32 18 10 32 0 206 96 0 20553 6023 232.0 105.21 12.4 2441 8.42 2.47

95 35 14 -10 104 40 18 10 32 0 220 105 0 17743 5200 214.6 97.36 12.6 2515 7.05 2.07

95 35 14 -10 139 59 18 10 32 0 265 129 0 10254 3005 153.8 69.78 12.6 2510 4.09 1.20

95 35 14 -10 121 50 18 10 32 0 241 116 0 14008 4105 186.8 84.75 12.7 2552 5.49 1.61

95 35 32 0 121 50 18 10 50 10 214 101 0 23669 6937 321.6 145.87 15.3 3194 7.41 2.17

95 35 32 0 104 40 18 10 50 10 195 91 0 28368 8314 350.5 159.01 14.7 3054 9.29 2.72

95 35 32 0 139 60 18 10 50 10 234 112 0 18616 5456 285.8 129.63 15.7 3292 5.66 1.66

95 35 40 5 112 44 18 10 58 15 191 88 0 32214 9441 419.6 190.33 16.0 3373 9.55 2.80

95 35 41 5 121 50 18 10 59 15 201 94 0 29191 8555 401.8 182.26 16.4 3474 8.40 2.46

95 35 41 5 139 60 18 10 59 15 222 105 0 23672 6938 368.3 167.04 17.2 3665 6.46 1.89

95 35 49 10 139 60 18 10 67 20 210 99 0 28794 8439 455.6 206.68 18.6 3984 7.23 2.12

95 35 49 10 123 50 18 10 67 20 189 87 0 34904 10229 492.1 223.20 17.7 3777 9.24 2.71

95 35 49 10 112 45 18 10 67 20 179 82 0 38862 11389 513.6 232.95 17.0 3620 10.73 3.15

95 35 58 15 139 60 18 10 76 25 199 93 0 34727 10177 560.9 254.42 20.0 4317 8.04 2.36

Discharge

temperature*

Ambient

temperature

Evaporating

temperature

Condensing

temperature

Superheating

temperature

Return Gas

TemperatureEER COP

Subcooling


Input

power

36

Table 3.2.2.2b, Coefficients of HBP compressor FH4540Z, ARM20B, 20°C RGT

Figure 8a, FH4540Z Capacity (W), ARM20B, 20°C RGT


(W)

Power

(W)

Mass Flow

(kg/h)

COP

(W/W)

C1 15510.024 3722.319 230.72147 6.5333669

C2 538.5274 54.9418 7.6227074 0.1573902

C3 -210.3127 -69.6809 -2.5176841 -0.1329516

C4 2.642538 -1.140311 0.0308961 0.0005664

C5 -4.390012 -0.950269 -0.0054275 -0.0025892

C6 1.136380 1.906594 0.0308778 0.0011797

C7 -0.055380 -0.023205 -0.0007560 -0.0000036

C8 0.005884 0.013493 0.0010807 -0.0000091

C9 0.003271 0.022699 -0.0000290 0.0000127

C10 -0.007273 -0.014403 -0.0002846 -0.0000054

37

Figure 8b, FH4540Z Power Input (W), ARM20B, 20°C RGT

Figure 8c, FH4540Z Mass Flow (kg/s), ARM20B, 20°C RGT

38

Figure 8a, FH4540Z COP (W/W), ARM20B, 20°C RGT

39


Table 3.2.2.3, Measured data of HBP compressor FH4540Z, ARM20B, AREP rating points


95 35 20 -6.7 120 48.9 20 11.1 40 4.4 211 99 0 16144 4731 239.6 108.7 13.6 2755 5.86 1.72

95 35 20 -6.7 120 48.9 40 22.3 60 15.6 224 107 0 17083 5007 226.0 102.5 13.6 2767 6.17 1.81

95 35 20 -6.7 120 48.9 45 25.0 65 18.3 227 108 0 17351 5085 223.8 101.5 13.6 2763 6.28 1.84

95 35 45 7.2 130 54.4 20 11.1 65 18.3 202 95 0 31821 9326 430.3 195.2 17.4 3705 8.59 2.52

EER COPSubcooling


Input

power

Ambient

temperature

Evaporating

temperature

Condensing

temperature

Superheating

temperature

Return Gas

Temperature

Discharge

temperature*

40

4. Comparative Analysis

4.1. Low Back Pressure Compressor FH2511Z

4.1.1. Operating map with 10K superheat (18°F)

Tables and Figures of 4.1.1. show the deviation of ARM20b to R-404A cooling

capacity, power input, and cooling COP respectively, vs evaporating /condensing

temperature. At extreme operating conditions, testing uncertainties could lead to

higher than normal variability in reported results.

Tables 4.1.1, ARM20B/R404A-1, FH2511Z, 10K Superheat

-40 -35 -30 -25 -20 -15 -10

30 -22% -13% -7% -3% -1% -1% -2%

35 -25% -14% -6% -1% 1% 1% 0%

40 -32% -16% -6% 1% 3% 3% 2%

45 -20% -6% 2% 5% 6% 4%

50 -25% -6% 4% 8% 9% 7%

55 -6% 6% 12% 13% 11%

60 -4% 12% 18% 19% 16%

-40 -35 -30 -25 -20 -15 -10

30 -15% -14% -11% -10% -9% -11% -14%

35 -16% -14% -12% -10% -9% -10% -13%

40 -17% -15% -12% -10% -9% -9% -12%

45 -16% -13% -10% -9% -9% -11%

50 -17% -13% -10% -8% -8% -11%

55 -13% -10% -8% -8% -10%

60 -14% -10% -8% -8% -9%

-40 -35 -30 -25 -20 -15 -10

30 -8% 0% 5% 8% 9% 11% 14%

35 -11% 1% 7% 10% 11% 13% 15%

40 -18% -1% 8% 12% 13% 14% 16%

45 -5% 8% 13% 15% 16% 18%

50 -10% 8% 15% 18% 19% 20%

55 8% 18% 22% 23% 23%

60 12% 25% 28% 29% 28%

To

Tc

COP

To

Tc

COOLING CAPACITY

To (°C)

Tc

POWER INPUT

41

Figures 4.1.1, ARM20B/R404A-1, FH2511Z, 10K Superheat

42

4.1.2. Operating map with 20°C Return Gas Temperature (68°F)

Tables and Figures of 4.1.2. show the deviation of ARM20B to R-404A cooling




Tables 4.1.2, ARM20B/R404A-1, FH2511Z, 20°C RGT

°C -40 -35 -30 -25 -20 -15 -10

30 -17% -14% -10% -7% -5% -5% -6%

35 -19% -16% -10% -6% -4% -3% -4%

40 -21% -17% -11% -6% -3% -2% -2%

45 -19% -12% -6% -2% 0% 0%

50 -20% -13% -6% -1% 2% 2%

55 -13% -6% 0% 3% 4%

60 -12% -5% 1% 5% 6%

°C -40 -35 -30 -25 -20 -15 -10

30 -13% -11% -9% -8% -9% -10% -14%

35 -14% -12% -9% -8% -8% -10% -12%

40 -16% -13% -10% -9% -8% -9% -11%

45 -14% -12% -10% -9% -9% -11%

50 -15% -13% -10% -9% -9% -10%

55 -13% -11% -9% -9% -10%

60 -12% -10% -9% -9% -9%

°C -40 -35 -30 -25 -20 -15 -10

30 -4% -3% -1% 1% 4% 6% 9%

35 -6% -4% -1% 2% 5% 7% 9%

40 -7% -5% -1% 3% 6% 8% 11%

45 -5% 0% 4% 8% 10% 12%

50 -5% 0% 5% 9% 12% 14%

55 0% 6% 10% 14% 16%

60 1% 6% 11% 15% 17%

To

Tc

COP

To

Tc

COOLING CAPACITY

To

Tc

POWER INPUT

43

Figures 4.1.2, ARM20B/R404A-1, FH2511Z, 20°C RGT

44

4.1.3. AREP test conditions for commercial refrigeration applications

45

4.1.4. Discharge temperature with 10K superheating

R404A

ARM20B

°C -40 -35 -30 -25 -20 -15 -10

30 102 96 90 85 80 76 72

35 105 100 94 89 84 80 77

40 110 104 99 94 89 85 82

45 109 104 99 94 90 87

50 116 110 104 99 95 92

55 117 111 105 101 97

60 124 118 112 106 102

To

Tc

°C -40 -35 -30 -25 -20 -15 -10

30 103 105 103 97 91 85 82

35 104 108 107 102 96 91 87

40 105 111 111 108 102 97 93

45 114 115 113 108 103 99

50 116 119 118 114 109 105

55 122 122 119 115 111

60 123 125 123 120 116

To

Tc

46

4.2. High Back Pressure Compressor FH4540Z

4.2.1. Operating map with 10K superheat (18°F)





Tables 4.2.1, ARM20B/R404A-1, FH4540Z, 10K Superheat

°C -25 -20 -15 -10 -5 0 5 10 15

30 -21% -17% -11% -6% -3% -1% 0% 0% -1%

35 -16% -16% -11% -7% -3% -1% 0% 0% 0%

40 -14% -11% -7% -3% 0% 1% 1% 0%

45 -11% -7% -3% 0% 2% 2% 2%

50 -9% -6% -2% 1% 4% 4% 4%

55 -3% 1% 4% 6% 7% 7%

60 3% 6% 9% 12% 13% 12%

°C -25 -20 -15 -10 -5 0 5 10 15

30 -18% -17% -15% -13% -12% -12% -14% -18% -24%

35 -17% -17% -16% -14% -12% -12% -13% -16% -21%

40 -17% -16% -15% -13% -12% -12% -14% -18%

45 -16% -15% -13% -12% -12% -13% -16%

50 -16% -15% -14% -12% -11% -12% -14%

55 -15% -14% -12% -11% -11% -12%

60 -14% -13% -12% -10% -10% -10%

°C -25 -20 -15 -10 -5 0 5 10 15

30 -4% 0% 5% 8% 10% 13% 16% 22% 30%

35 0% 2% 6% 9% 11% 13% 15% 20% 26%

40 3% 6% 9% 11% 13% 15% 18% 23%

45 7% 10% 12% 14% 15% 18% 21%

50 8% 11% 14% 15% 17% 18% 20%

55 14% 17% 18% 19% 20% 21%

60 20% 22% 24% 24% 24% 25%

COP

To

Tc

COOLING CAPACITY

To

Tc

POWER INPUT

To

Tc

47

Figures 4.2.1, ARM20B/R404A-1, FH4540Z, 10K Superheat

48

4.2.2. Operating map with 20°C Return Gas Temperature (68°F)





Tables 4.2.2, ARM20B/R404A-1, FH4540Z, 20°C RGT

°C -25 -20 -15 -10 -5 0 5 10 15

30 -23% -17% -11% -5% 0% 2% 3% 2% 0%

35 -22% -19% -13% -7% -2% 1% 2% 2% 0%

40 -19% -14% -8% -3% 0% 2% 2% 1%

45 -14% -9% -3% 0% 3% 3% 2%

50 -14% -8% -3% 2% 5% 5% 5%

55 -7% -1% 4% 8% 9% 9%

60 -6% 2% 8% 13% 15% 15%

°C -25 -20 -15 -10 -5 0 5 10 15

30 -17% -15% -12% -10% -8% -7% -9% -12% -17%

35 -18% -16% -14% -11% -10% -9% -10% -13% -17%

40 -17% -15% -12% -11% -10% -11% -13% -17%

45 -15% -13% -11% -10% -10% -12% -15%

50 -16% -13% -11% -10% -10% -11% -14%

55 -14% -11% -9% -9% -9% -12%

60 -16% -12% -9% -8% -8% -9%

°C -25 -20 -15 -10 -5 0 5 10 15

30 -7% -3% 2% 5% 8% 10% 13% 16% 20%

35 -5% -3% 1% 5% 8% 11% 13% 17% 21%

40 -3% 1% 5% 8% 11% 14% 17% 21%

45 1% 5% 8% 12% 14% 17% 21%

50 2% 6% 9% 13% 16% 18% 21%

55 8% 12% 15% 18% 21% 23%

60 12% 16% 19% 22% 25% 27%

To

Tc

Tc

To

POWER INPUT

COOLING CAPACITY

To

COP

Tc

49

Figures 4.2.2, ARM20B/R404A-1, FH4540Z, 20°C RGT

50

4.2.3. AREP test conditions for commercial refrigeration applications

51

4.2.4. Discharge temperature with 20°C return gas temperature

R404A

ARM20B

°C

°C

52

5. Summary

The compressor calorimeter testing of Arkema ARM20b was carried out at dew point conditions versus

R-404A.

Overall the compressor capacity is within 80% to 110% of R-404A rated performance across the

operating map, with extremes at high pressure ratio that should be double checked on smaller calorimeter

capacity range to eliminate potential testing uncertainty.

The compressor COP of ARM20b is between about 95% to 120% of R-404A across the compressor

operating map.

The discharge temperature of ARM20b is about 12K higher than R-404A (22°F).

TEST REPORT #69

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