50
CHAPTER
9
Model selection and capacity calculation
[RA temperature control]
Dx-coil unit
GUG-01SL-E
GUG-02SL-E
GUG-03SL-E
Connected Lossnay
LGH-
50RVX-E
LGH-
65RVX-E
LGH-
80RVX-E
LGH-
100RVX-E
LGH-
150RVX-E
LGH-
200RVX-E
LGH-
150RVXT-E
LGH-
200RVXT-E
LGH-
250RVXT-E
Air volume [m
3
/h]
500
650
800
1000
1500
2000
1500
2000
2500
Connected Outdoor unit
ZRP35
ZRP35
ZRP50
ZRP71
ZRP100
ZRP100
ZRP100
ZRP100
ZRP125
CA (kW)
3.13
3.48
4.35
6.18
8.27
8.7
8.27
8.7
10.88
SHC (kW)
2.10
2.40
3.00
4.08
5.62
6.44
5.62
6.53
9.30
SHF
0.67
0.69
0.69
0.66
0.68
0.74
0.68
0.75
0.83
Dx-coil unit
-
-
GUG-02SL-E
GUG-03SL-E
Connectable Lossnay
-
-
LGH-
80RVX-E
LGH-
100RVX-E
LGH-
150RVX-E
LGH-
200RVX-E
LGH-
150RVXT-E
LGH-
200RVXT-E
LGH-
250RVXT-E
Air volume [m
3
/h]
-
-
800
1000
1500
2000
1500
2000
2500
Connected Outdoor unit
-
-
ZRP50
ZRP50
ZRP71
ZRP71
ZRP71
ZRP71
ZRP71
CA (kW)
-
-
4.35
4.61
6.18
6.44
6.18
6.44
6.79
SHC (kW)
-
-
3.00
3.32
5.01
5.47
5.07
5.54
6.14
SHF
-
-
0.69
0.72
0.81
0.85
0.82
0.86
0.89
Supply air condition from Dx-coil can be read out by psychrometric chart.
Because of supply air temperature is lower than dew point temperature of indoor air(11°C), there is a possibility of water
condensation occurring around the outlet duct.
In this case, some countermeasures such as adding more insulation materials to supplying duct or setting target temperature
high not to operate at maximum point are necessary.
SHF depends on the designing conditions such as return or outdoor air conditions.
Use the adequate SHF for the actual designing by the table in the page 65.
As a result, (D) is nearly equal to (A).
Therefore, under this example condition, L Dx-coil unit system has enough capacity as all-in-one air-conditioning system.
By calculations from STEP 1 to 3, the capacity of L Dx-coil unit is summate as shown below.
STEP4. Comparison of L Dx-coil unit capacity with required capacity
Capacity calculation result
(A) Required cooling capacity
(B) Lossnay energy recovery
(C) Dx-coil cooling capacity
(D) L DX-coil unit system cooling capacity
= (B) + (C)
3.2 kW
6.2 kW
9.4 kW
9.4 kW
Supply Air from Dx-coil unit
Dry-bulb temperature [°C]
10.5
Wet-bulb temperature [°C]
9.1
Absolute humidity [kg/kg(DA)]
0.0066
Relative humidity [%]
84
Enthalpy [kJ/kg(DA)]
27.2
Summary of Contents for GUG-01SL-E
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