AERMEC NXW 0650 User Manual

8.7. COOLING CAPACITY - INPUT
POWER VERSION E (CONDEN-
SERLESS)
- “VERSIONS E (CONDENSERLESS)
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;
According to the temperature of
the hot water produced referred
to is shown assuming a differ-
ence of 5°C between the inlet
to and outlet from the total heat
recovery unit.
KEY:
Cf = Cooling capacity correc-
tion coefficient
Ca = Input power correction
coefficient
8.8. FOR ∆T DIFFERENT FROM
THE RATED VALUE
For ∆t different from 5°C to the
evaporator, refer to Tab.8.8.1 for
the cooling capacity and input
power correction factors.
8.9. FOULING FACTORS
The properties provided on table
8.9.1 refer to the conditions of
clean pipes with a fouling factor
= 1. For values different from the
fouling factor, multiply the values
in the performance table by the
reported coefficients.
21
INXWPY. 1004. 4438805_00
COOLING CAPACITY
Evaporator processed
water temperature (Δt=5°C)
Evaporator processed
water temperature (Δt=5°C)
Cf
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
-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
30
35
40
45
45
55
58
Ca
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
30
35
40
45
50
55
58
fig. 8.7.1
INPUT POWER IN COOLING MODE
8.8.1 CORRECTION FACTORS FOR ∆T DIFFERENT
FROM THE CHILLER RATED VALUE
8.9.1 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 0650 Specifications

General

Brand	AERMEC
Model	NXW 0650
Category	Chiller
Language	English