Hydrotherm's
packaged thermal liquid heaters provide the greatest fuel utilization without danger of
vapor lock. They provide accurate delivery temperature up to 750oF at virtually
atmospheric pressure in process heating applications. Completely factory assembled, with
outputs to 40 million Btu/hr. Using the
"water tube" type of design with the fluid circulation inside the tube, the
Hydrotherm Thermal Liquid Heater makes maximum use of both radiant and convective heat.
The mono-tube, horizontal or vertical helical coil actually is the entire combustion
chamber. Gases leaving the combustion chamber are passed aver the entire outside surface
of the coil to use all available heat.
The thermal fluid flows through the coil, eliminating the
possibility of vapor lock or short circuiting the fluid. The heater coil is fabricated
from seamless pipe with heavier walls than conventional boiler tube. At all times, all
equipment in the heating system, including the heater coil and heater users, are exposed
to atmospheric pressure via expansion tank. Therefore, the heater tube is not subjected to
excessive pressure. The only pressure exerted on the tube is that required to move the
liquid. Pressurized systems are also available for special applications. Special
insulating blocks eliminate the need for any further insulation .
Standard models are equipped with fully modulating, heavy
duty burners specially selected to fit the Hydrotherm design. Burners are available for
any grade of gas and fuel oil, or a combination of gas, oil or liquid and gas waste. Air
or steam atomization is used when required by liquid fuel.
