Panasonic CS-A18BD3P / CU-A18BBP5 Service Manual ▷ View online
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COOLING CAPACITY CURVE
Example
CS-A28BD3P / CU-C28BBP8
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Calculation of the actual cooling capacity and power
consumption for the following cooling conditions: Indoor
temperature of 18°C (wet-bulb temperature) and outdoor
temperature of 40°C (dry-bulb temperature).
consumption for the following cooling conditions: Indoor
temperature of 18°C (wet-bulb temperature) and outdoor
temperature of 40°C (dry-bulb temperature).
Calculation method
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Find the cooling capacity ratio and power consumption ratio
from the cooling capacity graph and power consumption
graph for model CS-A28BD3P / CU-C28BBP8.
from the cooling capacity graph and power consumption
graph for model CS-A28BD3P / CU-C28BBP8.
1. The cooling capacity ratio indicated at the intersection
between
an
outdoor
unit
heat
exchanger
inlet
air
temperature of 40°C on the horizontal axis and an indoor
unit heat exchanger inlet temperature on 18°C is 0.92.
unit heat exchanger inlet temperature on 18°C is 0.92.
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COOLING POWER CONSUMPTION CURVE
2. The cooling power consumption ratio from the same
intersection on the power consumption graph is 1.02.
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Thus,
Actual cooling capacity = cooling capacity ratio x rated
cooling = 0.92 x 7.80 = 7.18 (kW)
Actual cooling capacity = cooling capacity ratio x rated
cooling = 0.92 x 7.80 = 7.18 (kW)
Actual
cooling
power
consumption
=
cooling
power
consumption x rated power consumption = 1.02 x 2.70 =
2.75 (kW)
2.75 (kW)
15 CAPACITY AND POWER CONSUMPTION
15.1. COOLING CAPACITY CURVE, COOLING POWER CONSUMPTION
CURVE
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RATED COOLING CAPACITY, RATED COOLING POWER CONSUMPTION
MODEL NAME
RATED COOLING STANDARD
CAPACITY (kW)
POWER CONSUMPTION (kW)
CS-A24BD3P/CU-A24BBP5
6.50
2.59
CS-A28BD3P/CU-A28BBP5
7.30
2.69
CS-A28BD3P/CU-A28BBP8
7.30
2.69
CS-A34BD3P/CU-A34BBP5
10.45
3.95
CS-A34BD3P/CU-A34BBP8
10.45
3.65
CS-A43BD3P/CU-A43BBP8
13.00
4.53
CS-A50BD3P/CU-A50BBP8
14.50
5.10
CS-A24BD3P/CU-C24BBP5
6.50
2.59
CS-A28BD3P/CU-C28BBP5
7.30
2.69
CS-A28BD3P/CU-C28BBP8
7.30
2.69
CS-A34BD3P/CU-C34BBP5
10.45
3.95
CS-A34BD3P/CU-C34BBP8
10.45
3.65
CS-A43BD3P/CU-C43BBP8
13.00
4.53
CS-A50BD3P/CU-C50BBP8
14.50
5.10
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Calculation of actual cooling capacity and power consumption
33
15.2. PERFORMANCE DATA
CS-A18BD3P/CU-A18BBP5, CS-C18BD3P/CU-C18BBP5
Model
COOLING PERFORMANCE
Ambient
Temperature Air Entering Condenser (°C D.B.)
Return
25°C
30°C
35°C
40°C
45°C
Air
TC
SHC
IPT
TC
SHC
IPT
TC
SHC
IPT
TC
SHC
IPT
TC
SHC
IPT
D.B.
W.B.
kW
kW
kW
kW
kW
kW
kW
kW
kW
kW
kW
kW
kW
kW
kW
17
6.84
5.98
2.09
6.58
5.88
2.25
6.25
5.76
2.39
5.86
5.51
2.55
5.40
5.07
2.68
23
19
7.17
5.19
2.25
6.91
5.13
2.39
6.58
5.01
2.55
6.25
4.88
2.71
5.86
4.68
2.83
22
7.76
4.02
2.49
7.50
4.02
2.62
7.17
3.98
2.78
6.84
3.93
2.91
6.44
3.82
3.06
17
6.80
5.95
2.09
6.54
5.84
2.25
6.21
5.72
2.39
5.82
5.47
2.55
5.36
5.04
2.68
25
19
7.12
5.16
2.25
6.86
5.10
2.39
6.54
4.98
2.55
6.21
4.85
2.71
5.82
4.65
2.83
22
7.72
3.99
2.49
7.46
4.00
2.62
7.12
3.95
2.78
6.80
3.90
2.91
6.41
3.80
3.06
17
6.76
5.91
2.09
6.50
5.81
2.25
6.18
5.69
2.39
5.79
5.44
2.55
5.33
5.01
2.68
27
19
7.09
5.13
2.25
6.83
5.07
2.39
6.50
4.95
2.55
6.18
4.82
2.71
5.79
4.63
2.83
22
7.67
3.96
2.49
7.41
3.97
2.62
7.09
3.93
2.78
6.76
3.88
2.91
6.37
3.77
3.06
17
6.72
5.88
2.09
6.46
5.78
2.25
6.15
5.66
2.39
5.76
5.41
2.55
5.30
4.98
2.68
29
19
7.05
5.10
2.25
6.79
5.05
2.39
6.46
4.92
2.55
6.15
4.79
2.71
5.76
4.60
2.83
22
7.63
3.95
2.49
7.37
3.95
2.62
7.05
3.91
2.78
6.72
3.86
2.91
6.33
3.75
3.06
17
6.67
5.83
2.09
6.42
5.73
2.25
6.09
5.61
2.39
5.71
5.37
2.55
5.26
4.94
2.68
32
19
6.99
5.06
2.25
6.73
5.00
2.39
6.42
4.89
2.55
6.09
4.76
2.71
5.71
4.57
2.83
22
7.57
3.91
2.49
7.32
3.92
2.62
6.99
3.88
2.78
6.67
3.82
2.91
6.29
3.73
3.06
Legend : BF Bypass Factor 0.20 SHC Sensible Heat Capacity TC Total Cooling Capacity
CAPACITY SELECTION NOTES
(1) The table above is based on unit nominal evaporator airflow,
correction factor must therefore be applied for selections
away from this condition.
(1) The table above is based on unit nominal evaporator airflow,
correction factor must therefore be applied for selections
away from this condition.
COOLING CORRECTION FACTORS
EVAP. AIR FLOW m
3
/ min (l/s)
14 (233)
17 (283)
20 (333)
23 (383)
SHC Sensible Heat Capacity
0.86
0.93
1
1.08
TC Total Cooling Capacity
0.92
0.96
1
1.05
34
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HEATING CAPACITY CURVE
<Precautions
on
using
capacity
and
electrical
characteristics curves>
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Heating capacity when the unit is frosted over or while
being
being
defrosted
will
vary
depending
on
outdoor
temperature (´CW8) and the amount c frost. Heating
capacity performance must be compensated because it
does not take into account the capacity drop incurred
when the unit is frosted over and while it is being
defrosted. Therefore, to obtain the integral heating
capacity in consideration 01 overfrosting and defrost
operations. Heating capacity must be multiplied by the
compensation coefficient below.
capacity performance must be compensated because it
does not take into account the capacity drop incurred
when the unit is frosted over and while it is being
defrosted. Therefore, to obtain the integral heating
capacity in consideration 01 overfrosting and defrost
operations. Heating capacity must be multiplied by the
compensation coefficient below.
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Heating capacity compensation coefficient for heating in
frosted situations.
frosted situations.
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HEATING POWER CONSUMPTION CURVE
15.3. HEATING CAPACITY CURVE, HEATING POWER CONSUMPTION
CURVE (HEAT PUMP MODEL ONLY)
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RATED HEATING CAPACITY, RATED HEATING POWER CONSUMPTION
MODEL NAME
RATED HEATING STANDARD
CAPACITY (kW)
POWER CONSUMPTION (kW)
CS-A24BD3P/CU-A24BBP5
7.10
2.50
CS-A28BD3P/CU-A28BBP5
7.75
2.61
CS-A28BD3P/CU-A28BBP8
7.75
2.40
CS-A34BD3P/CU-A34BBP5
11.20
3.55
CS-A34BD3P/CU-A34BBP8
11.20
3.40
CS-A43BD3P/CU-A43BBP8
14.20
3.90
CS-A50BD3P/CU-A50BBP8
15.70
5.09
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16 DISCHARGE AND SUCTION PRESSURE
16.1. SATURATION TEMPERATURE OF DISCHARGE AND SUCTION
PRESSURE
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