AERMEC NXW 0900 User Manual

8.14. HEATING CAPACITY WITH TOTAL
RECOVERY
The heating capacity yielded and
the input electrical capacity in
conditions other than rated condi-
tions are obtained by multiplying
the rated values (Pt, Pa) by the
respective correction coefficients
(Cr, Ca).
Diagram (Tab. 8.14.1) 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 difference in
water temperature between the
input and output of the condenser
equal to 5°C.
KEY:
Cr =
Heating capacity correction
coefficient
Ca = Input power correction
coefficient
8.15. FOR ∆T DIFFERENT FROM THE
RATED VALUE
For ∆t different from 5°C to the
evaporator, refer to Tab.8.15.1 for
the cooling capacity and input
power correction factors.
8.16. FOULING FACTORS
The performance levels indicated
in table 8.16.1 refer to conditions
with clean tubes, with a fouling
factor = 1. For values different from
the fouling factor, multiply the val-
ues in the performance table by
the reported coefficients.
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
25
30
35
40
45
50
55
Cr
fig. 8.14.1
Ca
0,5
0,6
0,7
0,8
0,9
1,0
1,1
1,2
-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
8.15.1 CORRECTION FACTORS FOR ∆T DIFFERENT
FROM THE CHILLER RATED VALUE
8.16.1 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
Evaporator processed water temperature (Δt=5°C)
HEATING CAPACITY
Evaporator processed water temperature (Δt=5°C)
ABSORBED POWER (HEATING)
23
INXWPY. 1004. 4438805_00

AERMEC NXW 0900 Specifications

General

Brand	AERMEC
Model	NXW 0900
Category	Chiller
Language	English