Surface World February 2019 SW_Feb_2019_LR | Page 50
www.vapour-degreasing.com
OVENS, SPRAYBOOTHS & PROCESS HEATING
It can therefore operate in line with, or at 90° to, the process airflow.
“In this context, the flame shape is of particular significance as it can
deliver either a square or rectangular profile – rather than a
conventional circular configuration,” continues Adrian Langford.
“Flame length is both short and consistent irrespective of the FDB
rating specified, optimising its suitability for mounting inside an
enclosure.”
He adds that
the system is
also designed to
reduce emissions
to minimal
levels.
The Lanemark
FDB design
also makes
full use of the
latest electronic
variable speed drives whereby temperature control signals are
received from the heated process air which then modulates the
output of the combustion air fan. When the required operating
temperature has been reached, the temperature control signal falls,
the combustion air fan speed slows down and the pressure generated
by the fan reduces. This change in combustion fan air pressure is
transmitted to the latest generation of gas/air modulating control
valves, such as the VAV series produced by Kromschroder, so that
the gas flow is reduced proportionately.
These are clear-cut gains when compared to gas and air modulation
via a linked gas butterfly valve and combustion air damper where
the combustion air fan runs continuously at maximum speed with the
linkage arrangement between the gas and air supplies being both
inflexible and, potentially, prone to sticking.
As with all Lanemark TX (tank heating) and FD (forced draught
heating) burner systems, the FDB is available in a choice of sizes
and configurations to match application needs, with heat input
options, for example, ranging from 9 to 1400 kW. In all cases,
installations can include a compact,
pre-piped modulating gas valve train and
control panel which includes a burner
controller, ignition transformer, differential
air pressure switch and two three-way air
valves as standard. The company points out
that additional control components, including
temperature controllers, can also be included
where requested and that the burners can
be specified for use with either natural or
propane gas.
“The operational and environmental benefits
of our FD range have been demonstrated
in a long and growing list of installations in
many different industrial sectors, and we are
delighted that the surface treatment and
finishing sector has long been one of our
key UK and international market places,”
adds Adrian Langford. “The addition of
the FDB unit not only extends application
and performance options but also acts as
a further demonstration of our ongoing
commitment to research, innovation and
product development.”
Telephone: (024) 7635 2000
Email: [email protected]
Visit: www.lanemark.com
48
FEBRUARY 2019
twitter: @surfaceworldmag