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FIRED THERMAL LIQUID HEATER

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Special Design Features :
   
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Closed circuit heating of commercial heat transfer liquids to 750 oF for single or independently-controlled multiple user.
   
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Heat Transfer surface and fluid velocity are selected for optimum  film and coil temperature, and maximum fluid and coil life.
   
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Heavy duty, forced draft, fully-modulating burner.
   
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Suitable for use with any gas (including waste gases), any grade of oil (including liquid waste), or a combination of gas and liquid fuels.
   
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Horizontal or Vertical design.
   
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Horizontal design offers comfort to service engineer, safer design from maintenance point of view.
    

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Hydrotherm Heaters meet latest NOx requirements. Control system design meets IRI / UL / FM / NFPA / OSHA regulations.

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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.

  
Control Systems are designed for maximum safety - they satisfy all current IRI, FM, NFPA, UL, OHSA requirements (and any special requirements specified by purchaser)

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TYPICAL FIRED THERMAL LIQUID HEATER

Typical Packaged Thermal Liquid Heater Assembly

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