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Packaged Steam Generators The Circulatic® Line
Flow Diagram
Operating Concept
The Circulatic®
steam generator is a forced re-circulation water tube boiler in
which water under pressure circulates at high velocity through a set
of nested, parallel connected, coils while forced draft combustion
gases travel across the coils. The hot gases envelope the entire tube
surface making maximum use of both radiant and convective heat to
achieve very high heat transfer rates.
Water at saturation temperature is drawn from the
steam drum and forced through the coils at three times the maximum
steaming rate by the re-circulating pump.
The water is then carried back to a steam lance, in
the top of the same drum, where steam is released and effectively
separated. The 99%+ dry steam is withdrawn from the drum and the
water forms a reservoir of heat saturated water to feed the recirculating
centrifugal pump. Solids collect at the bottom of the drum and are
blowout when the blow-down valve is opened.
A pressure sensitive control, which responds to the
steam pressure in the drum, regulates the supply of fuel and air
to the burner and provides efficient combustion over the complete
modulating range of the boiler. High efficiency is obtained, without
thermal shock, over the full operating range, not only at rated
output.
The built-in safeguards which monitor the main flame and initiate
shutdown in the event of loss of flame, as well as the location
of the steam drum out of the firing area, assures maximum operational
safety of the boiler.
Controls
An integral control panel contains all controls and indicators necessary
for the safe operation of the unit. A programmed operating sequence
is also incorporated for simplified startup.
Free Start-Up Service
A qualified service representative is on hand for two consecutive
days during start-up to assure trouble-free operation and provide
on-site operator training
Built to Meet Standards
Every unit is built to ASME Standards, Hartford inspected and National
Board registered. Coast Guard, American Bureau of Shipping, Factory
Mutual, Industrial Risk Insurers, Lloyds and other approvals are also
available upon request.
Factory Tested
All units are fire tested for up to three days at the factory, with
their individual controls to assure proper operation and to allow
for control adjustments, which avoid installation delays.
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