AERMEC NXW 0600 User Manual

8.4. COOLING CAPACITY AND
INPUT POWER
- “HEATING PUMP IN COOLING
OPERATION VERSIONS ”
The refrigerating capacity
yielded and the input electrical
capacity in conditions other than
rated conditions are obtained by
multiplying the rated values (Pf,
Pa) by the respective correction
coefficients (Cf, Ca).
The diagram allows you to obtain
the correction coefficients; cor-
responding to each curve, the
temperature of the hot proc-
essed water referred to is report-
ed, assuming a difference in
water temperature between the
input and output of the condens-
er equal to 5°C.
KEY:
Cf = Cooling capacity
correction coefficient
Ca = Input power correction
coefficient
8.5. FOR ∆ T DIFFERENT FROM THE
RATED VALUE
For ∆t different from 5°C to the
evaporator, refer to Tab. 8.5.1 for
the cooling capacity and input
power correction factors.
8.6. FOULING FACTORS
The performance levels indicat-
ed in table 8.6.1 refer to condi-
tions with clean tubes, with a
fouling factor = 1. For values dif-
ferent from the fouling factor,
multiply the values in the per-
formance table by the reported
coefficients.
20
INXWPY. 1004. 4438805_00
Evaporator processed
water temperature (Δt=5°C)
INPUT POWER IN COOLING MODE
Evaporator processed
water temperature (Δt=5°C)
COOLING CAPACITY
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
25
30
35
40
45
50
55
Ca
fig. 8.4.1
Cf
0,4
0,5
0,6
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
25
30
35
40
45
50
55
55
8.5.1 CORRECTION FACTORS FOR ∆T DIFFERENT
FROM THE CHILLER RATED VALUE
8.6.1 FOULING FACTOR
Evaporator Δt different to nominal 35810
Correction factor cooling capacity 0,99 1 1,02 1,03
Correction factor input power 0,99 1 1,01 1,02
Correction factor heating capacity 0,99 1 1,02 1,03
Condenser Δt different to nominal - 5 10 15
Correction factor cooling capacity
- 1 1,01 1,02
Correction factor input power - 1 0,99 0,98
Correction factor heating capacity capacity changes are neglectable
Fouling factor [K*m
2
]/[W] 0,00001 0,00002 0,00005
Correction factor cooling capacity 1 0,99 0,98
Correction factor input power 1 1 1
Correction factor heating capacity 1 1 0,99
Correction factor input power 1 1 1,02

AERMEC NXW 0600 Specifications

General

Brand	AERMEC
Model	NXW 0600
Category	Chiller
Language	English