McQuay M5HDC Spécifications Page 25

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24
M5HDC-2010
Performance Data
Details:
1
st
Step:
Indoor DB
˚C
Indoor WB
˚C
Outdoor DB, ˚C
35
TC (kW) SC (kW)
.....
.....
24
15
.......................
x
1
y
1
16 3.363
17 3.431
2.381
2.288
Total capacity, TC
x
1
= 3.295kW
(Same as Total capacity at 20°C Indoor DB / 15°C Indoor WB & 35°C Outdoor WB)*
Sensible capacity, SC
Extrapolation Method:
17º C – 15º C
=
2.288kW – y
1
17º C – 16º C
y
1
= 2.474kW
(b) Indoor Condition: 24°C DB, 15°C WB
Outdoor Condition: 40°C DB
Indoor DB
˚C
Indoor WB
˚C
Outdoor DB, ˚C
40
TC (kW) SC (kW)
.....
.....
24
15
........................
x
2
y
2
16 3.066
17 3.137
2.056
1.954
Total capacity, TC
x
2
= 2.995kW
(Same as Total capacity at 20°C Indoor DB / 15°C Indoor WB & 40°C Outdoor WB)*
Sensible capacity, SC
Extrapolation Method:
17º C – 15º C
17º C – 16º C
=
1.954kW – y
2
y
2
= 2.158kW
* This is due to 2 different conditions with same WB temperature, will have the same level of enthalpy.
For more details, please refer to psychrometrics chart
To obtain the Total capacity and Sensible capacity for
(a) Indoor Condition: 24°C DB, 15°C WB
Outdoor Condition: 35°C DB
2.228kW – 2.381kW
1.954kW – 2.056kW
Calculation Steps
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