Compressor Calorimeter Test of
Refrigerant Blend R449A
Miguel Boscan
Jan-21, 2016
BITZER US // AHRI-LGWP // Page 2
Refrigerants
Lubricant
/ BSE32 (Solest 31-HE)
No Modifications
Other Info
/ Testing Standard: EN13771-1:2003
/ Refrigerant data source: ASEREP v3.5.0
Test Setup
Refrigerant GWP (AR4) Composition
(Mass %)
R404A 3922 R125/R143a/R134a
(44/52/4)
R449A 1397 R32/R125/R134a,R1234yf
(24/25/26/25)
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Ecoline Series
/ 4GE-23Y-40P
Semi-hermetic reciprocating compressor
380-420V / 3 / 50Hz (1450 RPM)
2984CFH @ 50Hz (3604CFH @ 60Hz)
Compressor
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Operating Range
RGT: 20°C (68°F)
Subcooling: 0 K
Test Conditions
Min Max
SST -45°C (-49°F) 0°C (32°F)
SDT 20°C (68°F) 60°C (140°F)
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Results − Capacity Comparison
80%
85%
90%
95%
100%
105%
110%
115%
120%
-40 -35 -30 -25 -20 -15 -10 -5 0
Cap
acit
y (R
44
9A
/R4
04
A)
Saturated Suction Temperature °C (°F)20°C RGT, 0 K SC
Compressor Capacity(R449A/404A)
Tc=60°C
Tc=45°C
Tc=40°C
Tc=20°C
(-40) (-31) (-22) (-13) (-4) (5) (14) (23) (32)
R404A (140°F)
(113°F)
(104°F)
( 68°F)
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Results − Power Comparison
80%
85%
90%
95%
100%
105%
110%
115%
120%
-40 -35 -30 -25 -20 -15 -10 -5 0
Po
we
r (
R4
49
A/R
40
4A
)
Saturated Suction Temperature °C (°F)20°C RGT, 0 K SC
Power(R449A/404A)
Tc=60°C
Tc=45°C
Tc=40°C
Tc=20°C
(-40) (-31) (-22) (-13) (-4) (5) (14) (23) (32)
R404A (140°F)
(113°F)
(104°F)
( 68°F)
BITZER US // AHRI-LGWP // Page 7
Results − COP Comparison
80%
85%
90%
95%
100%
105%
110%
115%
120%
-40 -35 -30 -25 -20 -15 -10 -5 0
CO
P (
R4
49
A/R
40
4A
)
Saturated Suction Temperature °C (°F)20°C RGT, 0 K SC
COP(R449A/404A)
Tc=60°C
Tc=45°C
Tc=40°C
Tc=20°C
(-40) (-31) (-22) (-13) (-4) (5) (14) (23) (32)
R404A (140°F)
(113°F)
(104°F)
( 68°F)
BITZER US // AHRI-LGWP // Page 8
Results − Discharge Gas Temperature Data
20
40
60
80
100
120
140
160
-50 -40 -30 -20 -10 0
DG
T(°
C)
Saturated Suction Temperature °C (°F)20°C RGT, 0 K SC
DGT (R-404A)
Tc=60°C
Tc=45°C
Tc=40°C
Tc=20°C
20.0
40.0
60.0
80.0
100.0
120.0
140.0
160.0
-50 -40 -30 -20 -10 0
DG
T(°
F)Saturated Suction Temperature °C (°F)
20°C RGT, 0 K SC
DGT (R449A)
Tc=60°C
Tc=45°C
Tc=40°C
Tc=20°C
(320)
(284)
(248)
(212)
(176)
(140)
(104)
(68)
(-58) (-40) (-22) (-4) (14) (32) (-58) (-40) (-22) (-4) (14) (32)
BITZER US // AHRI-LGWP // Page 9
95%
100%
105%
110%
115%
120%
125%
130%
135%
140%
-40 -35 -30 -25 -20 -15 -10 -5 0
Dis
char
ge S
H (
R4
49
A/R
40
4A
)
Saturated Suction Temperature °C (°F)20°C RGT, 0 K SC
Discharge Gas Superheat(R449A/404A)
Tc=60°C
Tc=45°C
Tc=40°C
Tc=20°C
Results −
Discharge Gas Temperature Comparison
(-40) (-31) (-22) (-13) (-4) (5) (14) (23) (32)
(140°F)
(113°F)
(104°F)
( 68°F)
R404A
BITZER US // AHRI-LGWP // Page 10
/ Capacity
At the lower SST and SDTs of the tested conditions
R449A has lower capacity than R404A
As SST or SDT decreases
R449A has a reduction in capacity as a ratio to R404A
Summary
Refrigerant Capacity Power COP
R449A
Over Entire
Test Range-19% to +5% -16% to -10 -4% to +17%
Average -7.4% -13.4% +6.8%
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/ Power
At all test conditions
R449A used less power than R404A
As SST or SDT decreases
R449A has a reduction in power as a ratio to R404A
Summary
Refrigerant Capacity Power COP
R449A
Over Entire
Test Range-19% to +5% -16% to -10 -4% to +17%
Average -7.4% -13.4% +6.8%
BITZER US // AHRI-LGWP // Page 12
Summary
/ COP
As the SST and SDT decrease, the reduction of power was
greater than the reduction in capacity (as a ratio to R404A)
COP for R449A is greater than R404A at nearly all tested
conditions
At the lowest tested condition for SST and SDT
-35°C (-31°F) / +20°C (68°F)
R449A COP was lower than R404A
BITZER US // AHRI-LGWP // Page 13
/ Discharge Gas Temperature / Discharge Gas Superheat
At all tested conditions
R449A greater than R404A
approx. 5 K (8°F) to 20 K (37°F) higher
Discharge Superheat is 13 to 35% higher for R449A
Summary
Refrigerant∆ DischargeTemperature
∆ DischargeTemperature
Discharge Superheat
R449A
Over Entire
Test Range5 K to 20 K 8°F to 37°F +13% to +35%
Average 12.8 K 23°F +23%
Thank you