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9.7
HEATING CAPACITY WITH
DESUPERHEATERS
To calculate the heating capacity of
the desuperheater in conditions other
than nominal, multiply the nominal
value Pr in the table by the respective
correction coefficient Cd.
The following diagram can be used
to obtain the correction coefficients,
assuming that water ¨t = 5°C betwe-
en desuperheater inlet and outlet and
an evaporator water temperature of
7°C. For each curve, the condenser
outlet water temperature or con-
densation temperature is indicated.
Calculate the cooling power (Pf) and
absorbed power (Pa) following the sug-
gestions in "Selection criteria".
9.8
PRESSURE DROP
WITH DESUPERHEATERS
Heating capacity with desuperheaters
desuperheaters quantity
Desuperheater
Pressure drop
16
3,00
2,75
2,50
2,25
2,00
1,75
1,50
1,25
1,00
0,75
0,50
0,25
40
41
Temperature of water produced at desuperheater (¨t=5°C)
kPa
15
10
5
0
0
WSA
0701
0801
0901
kW
16,90
19,82
21,27
1
1
1
n°
l/h
2907
3410
3659
KPa
2,20
2,42
2,38
42
43
44
45
Desuperheater m³/h
1101
1402
1602
1802
24,45
34,06
35, 1 0
45,38
1
2
2
2
4206
5858
6037
7805
2, 1 8
2,22
2,05
2,56
46
47
48
49
50
2002
2202
2502
2802
47,49
49,60
55,89
56, 1 9
2
2
2
2
8168
8531
9613
9665
2,56
2,22
2, 1 0
2, 1 0
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