AERMEC NRL 280-75, Техническое руководство

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21 Aermec 13_01. 5641300_00
NRL 0280-0750 60Hz
EN
10. CORRECTIVE FACTORS
10.1. INPUT POWER AND COOLING CAPA
CITY "STANDARD VERSION"/ "HEAT
PUMP VERSION IN COOLING MODE"
The cooling capacity efficiency and electrical input
power in conditions differing from normal conditions
are obtained by multiplying the nominal values (Pf, Pa)
by the respective corrective co-efficients (Cf, Ca).
The following diagrams show how to obtain corrective
coefficients to use for units in their various versions
in cooling mode; external air temperature, to which
reference is made, is shown in correspondence to each
curve.
KEY:
Cf:
Corrective coefficient of the
cooling capacity.
Ca: Corrective coefficient of the
input power.
0,6
0,7
0,8
0,9
1
1,1
1,2
1,3
1,4
-4 -6 -2 0 2 4 6 6.7 8 10 12 14 16
18
40°C / 104°F
45°C /
113 °F
46°C / 114.8 °F
35°C / 95°F
30°C / 86°F
25°C / 77°F
20°C / 68°F
39.2
21.2 28.4
32 35.6 39.2 42.8 44.1 46.4 50 53.6 57.2 60.8 64.4
°C
°F
Ca in c
ooling
Water produced
INPUT POWER IN COOLING MODE CORRECTIVE COEFFICIENTS
Cf
0,4
0,5
0,6
0,7
0,8
0,9
1
1,1
1,2
1,3
1,4
1,5
1,6
-6 -4 -2 0 2 4 6 6.7 8 10 12 14 16 18
39.2 21.2 28.4 32 35.6 39.2 42.8 46.4 44.1 50 53.6 57.2 60.8 64.4
°C
20°C / 68°F
25°C / 77°F
30°C / 86°F
35°C / 95°F
40°C 104°F
45°C 113 °F
46°C 114.8 °F
°F
Water produced
COOLING CAPACITY CORRECTIVE COEFFICIENTS
FOR ∆ t DIFFERENT TO THE NOMINAL
FROM 10.01°F / 5.56°C.
For ∆ t different from 10.01°F / 5.56°C at the evaporator
use Tab. 10.3.1. to obtain the correction factors of the
cooling capacity and input power. In order to consider
exchanger dirtying, use the relative dirtying factors
Tab.10.4.1.