SPX Cooling Technologies Marley Sigma Steel - Manual (Page 17)

Specifications Specification Value
Marley / Sigma Steel Cooling Tower / Specifications: Base
17
6.0 Fill, Louvers and Drift Eliminators:
6.1 Fill shall be film-type, 15 mil thick,
thermoformed PVC, with louvers
formed as part of each fill sheet. Fill
shall be suspended from stainless
steel structural tubing supported from
the upper tower structure, and shall
be elevated above the floor of the cold
water basin to facilitate cleaning. Air
inlet faces of the tower shall be free of
water splash-out.
6.2 Drift eliminators shall be PVC, triple-
pass, and shall limit drift losses to
0.005% or less of the design water
flow rate.
■ Louvers integral with the fill keep the flowing water within the confines
of the fill. The separate external louvers used by others permit water to
escape the fill and form ice or produce an unsightly situation adjacent
to the tower. If you plan to use your tower in the wintertime, particu-
larly for free cooling, integral louvers will put your operating concerns
to rest.
■ Vertical blade-type eliminators, as well
as misdirected cellular types, cause
much of the fan power to be wasted
in turning the horizontal flow of air
vertical for its exit through the fan
cylinder. This power is, of course, not
available for contribution to thermal
performance.
Drift rate varies with design water
loading and air rate, as well as drift
eliminator depth and number of direc-
tional changes. A drift rate of 0.001%
is readily available in standard configuration without premium cost. If a
lower rate is required, please discuss with your Marley sales represen-
tative.
Louver
Section
Drift Eliminator
Section
Fill Section