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7.4
FOR ∆T OTHER
THAN NOMINAL
For ∆t other than 5°C, the Tav.1 is
used on the evaporator to obtain the
correction factors of the cooling and
input capacities. To take into account
the dirtying of the exchangers, the
relative dirtying factors are used
7.5
FOULING FACTORS
The performance shown by the table
refers to conditions with clean tubes,
with a fouling factor = 1. For other
fouling factor values, multiply the data
of the performance tables by the
coefficients given.
20
7.4.1
Correction factors for ∆t other than nominal, Chiller
Cooling capacity correction factors
Input absorbed power correction factors
7.5.1
3
5
8
10
0,99
0,99
1
1
1,02
1,01
1,03
1,02
Fouling factors
[K*m2]/[W]
Cooling capacity correction factors
Input absorbed power correction
factors
0,00005
0,0001
0,0002
1
0.98
0.94
1
0,98
0,95