Design & Supply of High Efficiency Thermal Fluid (Hot Oil, Dowtherm) Heating Systems

Thermal Fluid Systems, Inc. is proud to offer the custom design and supply of high efficiency thermal fluid (sometimes called hot oil or Dowtherm) heaters and systems. The heaters and systems can be:

  • Gas Fired
  • Oil Fired
  • Waste Fuel Fired

We build our thermal fluid heaters utilizing a high efficiency three-pass design for even temperature distribution. Compatible fuels include natural gas, propane, biodiesel, fuel oil numbers 2, 4, and 6 and Bunker C oil, waste liquid & gas products; can also run on electricity. Horizontal or vertical configurations are available, as are stand-alone or skid mounted units. Components include a 3 pass dual helical coil heat exchanger, specially designed isolation valves, pump, pump strainer, degasser, burner, expansion tank, safety controls and temperature blocking vessel. Optional features include a drain tank and secondary heating controls. Our process heaters are designed for outdoor and indoor applications, with an output range of 0.5 to 50,000,000+ BTU/hr and up to Up to 90%+ (LHV) efficiency.

Maintenance plans are available, and we also offer inspections and operator training. All of our hot oil heaters and heating systems are built tailored to customer specifications and applications and uphold the standards set by organizations including ASME, API, USCG, ABS. The NEMA ratings 1, 3R, 4, 4X, 7, and 12 are also maintained. For more information about our custom designed high efficiency thermal fluid heaters and heating systems or our other capabilities, please see the table below or contact us directly.

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High Efficiency Thermal Fluid Heating System Capabilities

Components

3 Pass Dual Helical Core

Fuel

Natural Gas
Propane
Biodiesel
#2 Fuel Oil

#4 Fuel Oil
#6 Fuel Oil
Bunker C
Waste Gas Product

Output

0.5 to 50,000,000+ BTU/hr

Efficiency

Up to 90%+ (LHV)

Services

Design
Supply
Maintenance Plan

Maintenance Inspection

Measure Burner Combustion
Check all Operating and Safety Controls
Check Heater Ancillary Equipment

Review Operating & Maintenance Procedures
Operator Training

Components

Heat Exchanger
Pump
Isolation Valves
Pump Strainer
Degasser

Temperature Blocking Vessel
Expansion Tank
Safety Controls
Burner

Options

Drain Tank
Explosion Proof
Secondary Heating Controls

Standards

API Standard 560
ASME
API

USCG
ABS

Operating Temperature

200 to 750°F

Design Temperature

To 800°F

Operating Pressure

Pumping Pressure (No Internal Pressure)

Design Pressure

Up to 150 psi

Thermal Fluid Type

Mineral Oil,Synthetic or Specialty
Calflo
Chevron
Dowtherm
Essotherm
Glycol
Marlotherm
Mobiltherm
Multitherm

Paratherm
Petrotherm
Shell Thermia
Syltherm
Texatherm
Therminol
Hot Water
Xceltherm
Others

Voltage

480 to 575 V

Phase

3

Frequency

50 to 60 Hz

Accuracy

+/- 1 °C

Configuration

Horizontal
Vertical

Location

Indoor
Outdoor

Mounting

Skids
Stand Alone

Class

General
Hose-Down

Class I
Class II

Division

I
II

NEMA Rating

1
3R
4

4X
7
12

Materials

Carbon Steel

Testing

Pressure
Function(Controls)

Additional Services

System Design
Maintenance & Repair
Field Service
Annual Inspections

Start Up
Engineering Consultation
Replacement Parts

Production Volume

Prototype to complete production system

Additional Information

Industry Focus

Plastics
Chemical
Food Industry
Laundry
Asphalt

Petrochemical
Pharmaceuticals
Process Equipment
Specialty Paper
Textiles

Intended Applications

Heated Rolls
Calendar Rolls
Press Platens
Process Skids
Wood Presses
Reactors
Heat Exchangers
Dryers
Evaporators
Mixers
Laminating Presses
Printing Machines
Coatings
Molding Presses
Edible Oils
Sludge Drying

Rubber Presses
Adhesives
Tank Heating
Fuel Heating
Ovens
Cargo Heating
Fluidized Beds
Fryers
Heat Tracing
Kilns
Dry Kilns
Chemicals
Wood Board Plants
Tenter Frames

Industry Standards

ASME
FM
ASI

File Formats

AutoCAD
Inventor

High Efficiency Thermal Fluid Heating Systems