11.9. FOULING FACTORS
The performance levels indicated in table: ”
FOUL
ING FACTOR K*M
2
/ W ”
refer to conditions with
clean tubes, with a fouling factor = 1. For values
different from the fouling factor,
multiply the values in the performance table by the
reported coefficients.
11.7. CORRECTIVE COEFFICIENTS OF RE
COVERED HEATING CAPACITY
The refrigerating capacity yielded and the input elec-
trical capacity in conditions other than
rated conditions are obtained by multiplying the
rated values (Pc, Pa) by the respective correction
coefficients (Cf, Ca).
The diagram allows you to obtain the correction
coefficients; corresponding to each curve,
the temperature of the hot processed water refer-
red to is reported, assuming a difference in water
temperature between the input and output of the
condenser equal to 5°C/10°F.
KEY
:
Ph
: Heating
capacity
Pa
: Input
power
Ch
: Heating capacity correction coefficient
Ca
: Input power correction coefficient
0.8
0.9
1.0
1.1
1.2
1.3
1.4
42
44
46
48
50
52
54
56
58
60
62
41
64,4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
°C
°F
E
D
C
B
A
Ch
: HE
ATING CAP
A
CITY (
R
EC
O
VERED
PO
WER
C
ORRE
CTION
C
OEFFICIENT
Ph: HEATING CAPACITY
TEMPERATURE OF THE WATER PRODUCED
AT THE EVAPORATOR
TEMPERA
TURE
OF
THE
W
ATER
PR
ODUCED
AT
RE
C
O
VER
Y
A
B
C
D
E
Condenser utput
water temeprature
°C
35
40
45
50
55
°F
95
104
113
122
131
A
B
C
D
E
Condenser utput
water temeprature
°C
35
40
45
50
55
°F
95
104
113
122
131
11.8. FOR
Δ
T DIFFERENT FROM THE RA
TED VALUE
For
Δ
t different from 5K, refer to Tab.
“
t DIFFERENT FROM NOMINAL (
t 5)”
for the cooling capacity and input power correction
factors.
FOULING FACTOR [K*M2]/[KW] correction factors
0,018
0,05
0,1
Cooling capacity
1
0,987 0,967
Input power
1
0,987 0,967
FOULING FACTOR [K*M2]/[KW] correction factors
0,018
0,05
0,1
Cooling capacity
1
0,987 0,967
Input power
1
0,987 0,967
0.8
0.9
1.0
1.1
1.2
1.3
42
44
46
48
50
52
54
56
58
60
62
41
64,4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
°C
°F
E
D
C
B
A
Pa: TOTAL INPUT POWER
Ca
:
INPUT
PO
WER
C
ORRE
CTION
C
OEFFICIENT
TEMPERA
TURE
OF
THE
W
ATER
PR
ODUCED
AT
RE
C
O
VER
Y
21
INRP260HzTY. 1312. 5806717_03
