Mitsubishi Electric GUG-01SL-E, Technical Manual

Page: 42 / 76

39
CHAPTER
9
Model selection and capacity calculation
III: Calculation of Lossnay energy recovery effect
(A) Lossnay model
(B) Temperature exchange efficiency for summer (at 1000m
3
/h)
(C) Enthalpy exchange efficiency on cooling (at 1000m 3 /h)
(D) Lossnay outlet air temperature
= (G) – ((G) - (I)) x (B) = 33
˚C
- (33
˚C
- 26
˚C
) x 0.72
(E) Lossnay outlet air enthalpy
= (H) – ((H) – (J)) x (C) = 84.6 - (84.6 – 52.8) x 0.71
(F) Energy recovered by Lossnay
=((H) – (E)) x
ρ
x Q
f
/3600 = (84.6 – 62.1) x 1.2 x 1000/3600
LGH-100RVX-E
71%
72%
28˚C
62.0kJ/kg(DA)
7.5 kW
Lossnay outlet air
Indoor Unit
of
Air Conditioner
Exhaust air
Return air
Dry bulb
temperature
(l)
26°C
Absolute
humidity
10.5 g/kg(DA)
Relative
humidity
50%
Enthalpy
(J)
52.8 kJ/kg(DA)
Outdoor air
Dry bulb
temperature
(G)
33°C
Absolute
humidity
20.1 g/kg(DA)
Relative
humidity
63%
Enthalpy
(H)
84.6 kJ/kg(DA)
STEP2.
Selection of Dx-coil unit and outdoor unit
Dx-coil unit should be selected by connected Lossnay model shown in the table below.
Besides, outdoor unit is naturally selected by required temperature control, RA or SA.
Note: Please see the picture below to find (G) to (J)
[RA (Return Air) temperature control]
Dx-coil unit GUG-01SL-E GUG-02SL-E GUG-03SL-E
Connectable
Lossnay
LGH-50RVX-E LGH-65RVX-E LGH-80RVX-E LGH-100RVX-E
LGH-150RVX-E
LGH-150RVXT-E
LGH-200RVX-E
LGH-200RVXT-E LGH-250RVXT-E
Connectable
outdoor unit
PUHZ-ZRP35 PUHZ-ZRP35 PUHZ-ZRP50 PUHZ-ZRP71 PUHZ-ZRP100 PUHZ-ZRP100 PUHZ-ZRP125
[SA (Supply Air) temperature control]
Dx-coil unit GUG-02SL-E GUG-03SL-E
Connectable
Lossnay
LGH-80RVX-E LGH-100RVX-E
LGH-150RVX-E
LGH-150RVXT-E
LGH-200RVX-E
LGH-200RVXT-E LGH-250RVXT-E
Connectable
outdoor unit
PUHZ-ZRP50 PUHZ-ZRP50 PUHZ-ZRP71 PUHZ-ZRP71 PUHZ-ZRP71
Note:
GUG-01SL-E cannot be used for the SA temperature control function. Refer to page 10 for pipe size information.
Adequate Dx-coil unit model
GUG-02SL-E
Lossnay model
LGH-100RVX-E
Adequate outdoor unit model
PUHZ-ZRP71
Temperature control feature
Return air temperature control
Lossnay Unit
Dry bulb temperature
[˚C]
28
Absolute humidity
[
g/kg(DA)
] 13.3
Relative humidity
[
%
]
56
Enthalpy
[
kJ/kg(DA)
]
62.0
Total energy recovered
[
kW
]
7.5
Ventilation load
[
kW
]
3.1
Ventilation load ratio
[
%
] 29