AERMEC NRP 0800, Техническое руководство

Страница: 19 / 32

11. CORRECTIVE FACTORS FOR DATA DIFFERENT THAN NOMINAL IN COOLING MODE
A B C D E F G
Condenser utput
water temeprature
°C 20 25 30 35 40 45 46
°F 68 77 86 95 104 113 114,8
A B C D E F G
Condenser utput
water temeprature
°C 20 25 30 35 40 45 46
°F 68 77 86 95 104 113 114,8
EXTERNAL
AIR
TEMPERA
TURE
d.b.
Cf
: C
OOLING
CAP
A
CITY
C
ORRE
CTION
C
OEFFICIENT
PRODUCED WATER TEMPERATURE EVAPORATOR
0,4
0,5
0,6
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
1,6
Pc: COOLING CAPACITY
G
F
E
D
C
B
A
4
39,2 40 42 44 46 48 50 52 54 56 58 60 62 64,4
5 6 7 8 9 10 11 12 13 14 15 16 17 18 °C
°F
11.1. COOLING CAPACITY AND INPUT
POWER
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 cold processed water
referred to is reported, assuming a difference in
water temperature between the input and output of
the condenser equal to 5°C/10°F.
KEY :
Pc : Cooling capacity
Pa : Input power
Cf : Cooling capacity correction coefficient
Ca : Input power correction coefficient
11.2. 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.
11.3. 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.

t DIFFERENT FROM NOMINAL (

t 5)
3 5 8 10
Cooling capacity 0,99 1 1,02 1,03
Input power 0,99 1 1,01 1,02
Pc: COOLING CAPACITY
EXTERNAL
AIR
TEMPERA
TURE
d.b.
Ca
:
INPUT
PO
WER
C
ORRE
CTION
C
OEFFICIENT
PRODUCED WATER TEMPERATURE EVAPORATOR
Pa: TOTAL INPUT POWER
G
F
A
B
C
D
E
0,4
0,5
0,6
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
1,6
4
39,2 40 42 44 46 48 50 52 54 56 58 60 62 64,4
5 6 7 8 9 10 11 12 13 14 15 16 17 18 °C
°F
Pa: TOTAL INPUT POWER
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
19
INRP260HzTY. 1312. 5806717_03