GTLB Series F400 120 Rated Fans - Klimats24.lv
GTLB Series F400 120 Rated Fans - Klimats24.lv
GTLB Series F400 120 Rated Fans - Klimats24.lv
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Performance curves – Recommended data selection<br />
The performance curves are applicable for airflows<br />
with a density of 1,2 kg/m 3 .<br />
Pt<br />
Pa<br />
mmWG<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
= Air volume in m 3 /s<br />
= Air volume in m 3 /h<br />
= Total pressure in Pa and in mmWG<br />
= Speed of the impeller in r.p.m.<br />
= Fan performance η, %<br />
= Sound power level in LwA<br />
= Motor power absorbed at the fans shaft P(kW)<br />
= Recommended power motor PM (kW)<br />
9 = Inertia point, J (Kg m 2 )<br />
10 = Dynamic pressure at the discharge side Pd<br />
11 = Resistance at free inlet, Δp 1<br />
12 = Resistance at free discharge, Δp 2 + pd<br />
13 = Resistance at inlet guard/protection guard, Δp 3<br />
14 = Resistance at inlet discharge, Δp 4<br />
15 = Performance correction factor k η<br />
= Working area of <strong>GTLB</strong> fans<br />
= Working area of GTHB fans<br />
Centrifugal direct drive fans <strong>GTLB</strong>-GTHB<br />
On the backward impellers performance curves, the fan efficiency shown is valid when the fan is working at maximum<br />
speed. The 16 scale provides the corrections to apply for lower revolutions.<br />
333
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