Mitsubishi Electric GUG-01SL-E Technical Manual page 47

III : Calculation of Lossnay energy recovery effect
(A) Lossnay model
(B) Temperature exchange efficiency for winter (at 1000m
(C) Enthalpy exchange efficiency on heating (at 1000m
(D) Lossnay outlet air temperature
= ( (I) – (G) ) x (B) + (G) = (20
(E) Lossnay outlet air enthalpy
= ( (J) – (H) ) x (C) + (H) = (38.3 – 4.7) x 0.725 + 4.7
(F) Energy recovered by Lossnay
= ( (E) – (H) ) x ρ x Q
Note: Please see the picture below to find (G) to (J).
Dry bulb temperature
Absolute humidity
Relative humidity
Enthalpy
Total energy recovered
Ventilation load
Ventilation load ratio
Dry bulb
temperature
Indoor Unit
Absolute
of
humidity
Air Conditioner
Relative
humidity
Enthalpy
STEP2. Selection of Dx-coil unit system
Please see Example 1-1 for details.
In this example, Lossnay + Dx-coil unit system is the same as Example 1-1 .
Return air temp. control
9
CHAPTER
- 0 ) x 0.80 + 0
˚C ˚C
/3600 = (29.1 – 4.7) x 1.2 x 1000/3600
f
Lossnay outlet air
Lossnay Unit
[˚C]
16
[ ]
5.2
g/kg(DA)
[ ]
46
%
[ ]
kJ/kg(DA) 29.1
[ ]
kW 8.1
[ ]
kW 3.1
[ ]
% 27
Return air
(I)
20°C
7.3 g/kg(DA)
50%
(J)
38.3 kJ/kg(DA)
Lossnay model
LGH-100RVX-E
Temp. control feature
Model selection and capacity calculation
LGH-100RVX-E
/h)
3 80 %
/h)
3 72.5 %
16 ˚C
˚C
29.1 kJ/kg(DA)
8.1 kW
Adequate Dx-coil unit model
Adequate outdoor unit model
Outdoor air
Dry bulb
(G)
0°C
temperature
Absolute
1.9 g/kg(DA)
humidity
Relative
50%
humidity
(H)
Enthalpy
4.7 kJ/kg(DA)
GUG-02SL-E
PUHZ-ZRP71
Exhaust air
44