Page 34 - Energize March 2022

NEWS

Why use a battery rack?

by Clive Rutter, Silicon Engineering

t’s important to keep your battery straight and level. As the cells warm and
cool, the plastic shell expands and contracts. If the cells are not aligned
Iproperly, pressure accumulates on the corners of the cells, causing them
to crack and potentially fail. Placing a long row of cells on the ground is not
recommended.
Silicon Engineering has designed racks for all types of stationary battery
models. All main requirements, such as strength, flexibility, acid-proof protection
have been considered in the design. The racks are light, small and easy to move strength and are certified for nuclear plants and
and store. Furthermore, they are available at any time because they are always earthquake regions. Available as open racks or
in stock, and can be totally assembled by using screws and plates. The main parts thermoplastic compound enclosed racks.
consist of stringers and supports.
Polywood stands are manufactured from 100% recycled plastics to the For more information on your battery requirements,
required dimensions and strength. The imported, epoxy coated steel Passoni racks and Battery Management Systems contact
Alpha (or Alphasys) battery racking systems can support all types of stationary Clive Rutter, Silicon Engineering,
battery types and sizes. In designing these easy–to-use racks, all requirements Phone 011-474-3423, clive.r@silicon-online.co.za,
can be accommodated. Electrolyte proof protection, electrical insulation, www.silicon-online.co.za

Silencer helps protect workers solutions, the modal attenuator does not
Unlike other noise suppression

from gas process noise introduce an obstruction
into the piping, so
it can be used in
applications where
isher WhisperTube modal attenuator provides particulates are
noise reduction in compressible fluid service suspended in process
Fto improve worker safety, with no impact to flows, and/or where
process flow. pigging is required for cleaning
Emerson has introduced the Fisher WhisperTube and maintenance.
Modal Attenuator for noisy gas or vapor applications The exact amount of noise reduction
in a wide range of industries. The modal attenuator is a depends on the frequency of the
full-bore device offering 15 decibel sound suppression to noise and the velocity of the flow.
reduce noise inside pipes produced by sources upstream, such as control valves or other Estimates regarding the degree of sound
devices. It is installed downstream of these types of devices in place of a pipe spool piece, suppression can be provided by Emerson
generates no additional pressure drop and has no impact on process flow. experts prior to purchase and installation.
Industrial users have long searched for a solution to reduce process piping noise, WhisperTube devices are offered
but until now all solutions have generated significant pressure drop, reduced flow, and/ in sizes from 2” to 12” (approx. 50 to
or introduced obstructions. This has led some users to install acoustic insulation to pipe 300 mm), with American Society of
sections to reduce noise, but this can be very costly and cumbersome to install, and it Mechanical Engineer (ASME) flange
does nothing to reduce internal piping noise. The modal attenuator addresses these and ratings of Class 150, 300, and 600.
other issues with a drop-in solution, improving worker safety and regulatory compliance, Pressure ratings match the flange rating
while reducing the risk of damage to downstream equipment due to high noise levels sizes and the maximum temperature is
internal to piping. 700°F (371°C).
Leading applications for the modal attenuator include those where upstream process
flows are changed by control valves, pressure relief valves, pumps, compressors and other Contact Emerson Automation Solutions,
devices that generate noise. Many of these devices must be installed in lengths of piping emrsouthafrica@emerson.com,
with no flow restrictions downstream, and the modal attenuator works particularly well in www.emerson.com/en-us/catalog/
these applications because it introduces no such restrictions. fisher-whispertube

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