AERMEC NXW 0600 User Manual

8. CORRECTIVE FACTOR
8.1. HEATING CAPACITY AND
INPUT POWER
- “HEAT PUMP VERSIONS IN
HEATING MODE”
The heating capacity yielded
and the input electrical capac-
ity in conditions other than rated
conditions are obtained by mul-
tiplying the rated values (Pt, Pa)
by the respective correction
coefficients (Ct, Ca).
Diagram (Tab. 8.1.1) allows you
to obtain the correction coef-
ficients; corresponding to each
curve, the temperature of the
hot processed water referred
to is reported, assuming a dif-
ference in water temperature
between the input and output of
the condenser equal to 5°C.
KEY:
Ct = Heating capacity correc-
tion coefficient
Ca = Input power correction
coefficient
8.2. FOR ∆T DIFFERENT FROM THE
RATED VALUE
For ∆t different from 5°C to the
evaporator, refer to Tab.8.2.1 for
the cooling capacity and input
power correction factors.
8.3. FOULING FACTORS
The performance levels indicat-
ed in table 8.3.1 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.
19
INXWPY. 1004. 4438805_00
Evaporator processed
water temperature (Δt=5°C)
HEATING CAPACITY
Evaporator processed
water temperature (Δt=5°C)
ABSORBED POWER (HEATING)
0,6
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
Ct
25
30
35
40
45
50
55
fig. 8.1.1
Ca
0,6
0,7
0,8
0,9
1,0
1,1
1,2
1,3
-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
8.2.1 CORRECTION FACTORS FOR ∆T DIFFERENT
FROM THE CHILLER RATED VALUE
8.3.1 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