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Heat Tracing Overview, Application and Guidelines

Heat Tracing Overview, Application and Guidelines

Heat Tracing Overview, Application and Guidelines

Product catalog summary
Overview
Heat tracing systems are crucial for maintaining the temperature of process equipment and piping, preventing freezing or changes in viscosity. These systems are applicable in both industrial and commercial settings, with various cable types available to meet specific requirements.
Industrial Cable Applications
  • Self-Regulating Cables: Adjust output based on temperature changes, making them energy-efficient and suitable for complex piping systems.
  • Constant Wattage Cables: Provide consistent watt density, ideal for high-temperature applications.
  • Mineral Insulated Cables: Rugged and suitable for high-temperature and high-wattage applications.
Commercial Cable Applications
  • Self-Regulating Freeze Protection: Prevents water line freezing by adjusting output with temperature changes.
  • Roof & Gutter De-Icing: Prevents ice damage on roofs and gutters.
Application Guidelines
  • Data Collection: Gather data such as maintenance temperature, ambient conditions, and pipe specifications.
  • Cable Selection: Choose based on application parameters, temperature requirements, and environmental conditions.
  • Wattage Rating: Determine appropriate wattage based on heat loss calculations.
  • Circuit Protection: Ensure proper circuit protection, adhering to safety standards.
Key Features and Specifications
  • Self-regulating cables are flexible, can be cut to length, and are suitable for hazardous locations.
  • Constant wattage cables are ideal for applications requiring consistent heat output.
  • Mineral insulated cables offer high durability for extreme conditions.
  • Commercial cables focus on freeze protection and de-icing, with options for wet and dry environments.
Conclusion
Chromalox provides a comprehensive range of heating cables tailored for various industrial and commercial applications, ensuring efficient temperature maintenance and protection against environmental challenges.
Specifications and Procedures
The document outlines the procedure for determining the number of circuits required for heating cables. This involves dividing the total cable length by the maximum circuit length, as specified in the cable data charts, and rounding up to the nearest whole number. The total cable length is calculated by adding the footage of the pipe to be traced and allowances for components like flanges, valves, and pipe supports, then multiplying by the number of runs or Wrap Factor.
Component Cable Allowance
Specific allowances are provided for different components: Flange Pair (1.5x), Pipe Support (2.0x), Butterfly Valve (2.5x), Ball Valve (2.7x), Globe Valve (4.0x), and Gate Valve (5.0x). An example calculation is provided to illustrate the process.
Controls and Accessories
Chromalox offers Integrated Connection Accessories (DL) designed to reduce installation time and parts by combining power connections and thermostats into one box. These accessories facilitate maintenance and future system expansion. Standard Connection Accessories (EL) are also available, offering lower upfront costs and meeting typical industry specifications.
Design Considerations
The document discusses the design of multiple runs when heat requirements exceed cable output ratings, including multiple straight runs and spiral runs. It emphasizes the importance of sensors, insulation, and controls in the system.
Additional Information
For more details on application tape, straps, conduit hubs, and HL kits, the document refers to additional resources available online at Chromalox's website.
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Catalog excerpts

Heat Tracing Overview, Application and Guidelines-1

Heat tracing is used to counteract the heat lostfrom process equipment and piping through its insulation. A heat tracing system is a group of process equipment and piping which is heat traced and controlled in a logical and economical manner.There are many reasons for making up theheat loss of a system. With any heat loss, there is a corresponding drop in temperature. In many cases, a drop in temperature bringsabout unacceptable consequences. These consequences could be freezing of water in cooling water lines, steam or condensate return lines, compressed air lines, fire protection lines, storage tanks, valves, etc. A drop in temperature of process fluids could result in solution precipitation, unacceptable viscosity increase or solidification of the product in the lines. > HEAT TRACINGPRODUCTS G-1 >

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Heat Tracing Overview, Application and Guidelines-2

Chromalox heating cable line includes cablessuitable for most process maintenance, pipeand vessel freeze protection and roof and gutter de-icing applications.Industrial Heating Cables are ideal for processmaintenance applications. Maintenancetemperatures up to 900 When industrial process piping and vesselsmust be maintained above the ambient airtemperature, Chromalox has the heating cable to fit the application. Cables range in themaximum maintenance temperature from150 In a large number of regions in the world,buildings are susceptible to damage caused bywater freezing. Primarily, this damage...

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Heat Tracing Overview, Application and Guidelines-7

Multiple Straight Runs Spiral Run SensorsInsulation Heating Cable EL Standard Connection Accessories DL ח Duraline Integrated ConnectionAccessories Lower Cost ՗ For use in competitivedesign and bid installations Chromalox took a long hard look at the hiddencosts that occur in a heat trace project. Indeedthis is the labor involved in the installation.Being an innovator, we set out to design aproduct that went above and beyond what the competition offered while reducing overallinstallation time and number of parts. TheIntegrated Connection Accessories (DL) aredesigned to combine power connections...

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