Thermal Fluid Heaters - Multi-Tubular Custom

Thermal Fluid Heaters

Multi-Tubular Custom

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The HTH Thermal Fluid Heaters are our higher capacity and/or higher operating temperature (exceeding 662°F or 350°C oil temperature) direct fired thermal fluid heaters.  A direct fired thermal fluid heater imparts its thermal energy directly into the process fluid, in this case thermal oil. The HTH utilizes a multi-tubular design composed of two distinct sections of heat transfer.  The combustion chamber, which is also referred to as the radiant section, is fully encapsulated by parallel piped tubes running tangentially with the burner flame.  The radiant section is located atop the convection section. The elements of combustion flow from the burner, through the radiant section, then pass through the convective section, while continuing the heat transfer process.

The HTH has also been designed to be supplied with a variety of forced draft burners, provided by some of the world’s leading burner manufactures.  This allows us to utilize a variety of fuels, meet stringent emissions requirements and even allow our customers the opportunity to select the burner of their choice.  In addition, the HTH is constructed with several inspection doors to allow easy access to both the radiant and convective sections of the thermal fluid heater. This allows for a more thorough inspection and cleaning of the heater and internal pipes.  If the combustion fuel is prone to ash or particle generation, a soot blower can be used via the inspection doors to help lessen the cleaning process.

The HTH Thermal Fluid Heaters come standard with an integrated combustion air preheater.  The configuration of the combustion air preheater eliminates the requirement for ducting between the two components, insulation for the preheater, and additional expenses for the installation of the combustion air preheater.  The simple addition of the combustion air preheater increase the efficiency of the heaters to upwards of 93%.

The HTH Thermal Fluid Heaters are fabricated by our partner in Italy, BONO Energia, to our exacting requirements. Performance Heating then trims the heaters out and completes the system with the required burner, controls, pumps skids, tanks and auxiliary equipment.  The heaters are available designed/constructed to various local code requirements around the world.  The most common codes are ASME with National Board registration for the United States, CRN for Canada, and CE/PED/TUV/DIN for Europe. Additional code requirements may be met if necessary.

Package systems are available for the HTH Thermal Fluid Heaters.  These package systems can be customized to meet each of our customers’ needs, including but not limited to: pump skids, expansion tanks, drain tanks, pipe spools, tank towers, ladders and platforms, and ancillary components.


  • Tank Heating
  • Suction Heating
  • Reactor Vessel Heating
  • Natural Gas Heating Amine Process Heating
  • Process Reboilers
  • Platen or Press Heating
  • Ovens & Fryers
  • Jacketed Vessel Heating Crude Oil Heating
  • Indirect Steam Generators
  • In Line Liquid Heating
  •  In Line Gas Heating
  • Heated Molds or Dies Building Heating
  • Roller Heating
  • Screw Heating
  • Autoclaves

Multi-Tubular Design

Integrated Combustion Air Preheater

Thermal Capacity:

  • Up to 120,000,000 Btu/Hr (Up to 30,000,000 kCal/Hr)

Operating Temperature:

  • Up to 750°F

Fuel Option:

  • Natural Gas
  • Propane Gas
  • #2 Fuel Oil/Diesel
  • Heavy Oils
  • Crude Oil
  • Biogas
  • Product Gas
  • Dual Fuel
  • Additional Fuel Options Available


  • Horizontal

Thermal Efficiency:

  • Up to 93%


Model Overview

Summary by model
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Model Thermal Capacity
Thermal Capacity
Thermal Capacity
Flow Rate
Model Steam Production
Steam Production
Steam Production
(From and at 212°F)
BHP Thermal Capacity
UM 30 300 661 735 21 206
UM 50 500 1,102 1,224 36 353
UM 100 1,000 2,205 2,449 71 697
UM 150 1,500 3,307 3,673 106 1,040
UM 200 2,000 4,409 4,898 142 1,393
UM 300 3,000 6,614 7,347 213 2,090
UM 400 4,000 8,818 9,796 273 2,678
Model Steam Capacity
Steam Capacity
BHP Thermal Capacity
HP 50 500 1,102 32 314
HP 100 1,000 2,205 64 628
HP 150 1,500 3,307 96 942
HP 200 2,000 4,409 128 1,256
HP 300 3,000 6,614 192 1,884
HP 400 4,000 8,818 256 2,512
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Model Steam Production
Steam Production
Steam Production
(From and at 212°F)
BHP Thermal Capacity
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Part Number
Watts Volts Amps Plug Type Lead Time

Additional Details

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