Designing a heat trace system can look straightforward on paper from determining heat loss, calculating the wattage required, and specifying the appropriate heating cable. But successful heat trace design depends on much more than these calculations.
Engineers have to account for operating temperatures, ambient conditions, pipe size, insulation, hazardous area requirements, circuit lengths, power availability and installation conditions. Once the trace heating system is installed, the performance of the heating cable needs to match the assumptions that went into the design.
At Drexan Energy Systems, we work with engineers to help solve these challenges before they become problems in the field.
Here are some of the most important questions we help engineers address.
- Can I Count on the Cable Delivering the Wattage I Designed Around?
This is one of the most important, and sometimes overlooked, questions in heat trace design.
An engineer calculates the heat loss of a pipe and determines the wattage required to maintain the desired temperature. This design calculation is only as reliable as the heating cable ultimately installed. That’s where manufacturing tolerances matter.
Drexan self-regulating heating cables are manufactured to a tight -0/+10% power output tolerance. This means the cable will not produce less than its rated wattage while limiting how much it can exceed that rating.
Why is this important?
Unnecessarily broad tolerances can introduce additional variables into a system. Engineers may need to account for higher potential wattage when considering electrical loads, breaker sizing, circuit lengths and overall system design.
Tighter tolerances give engineers greater confidence that the product being specified will perform within a predictable range.
The engineering question isn’t simply, “What wattage cable do I need?” It’s also: “How closely will the cable I receive match the performance I designed around?”
- How Do I Avoid Overdesigning the System?
There is an understandable temptation to build additional safety margins into a heat trace design. But more isn’t always better.
Overdesign can potentially mean additional cable, larger electrical infrastructure, shorter circuits or unnecessary energy consumption. The objective should be to provide the heat required by the application with an appropriate engineering safety margin without introducing unnecessary cost or complexity. Product consistency plays an important role.
When engineers can rely on tighter manufacturing tolerances and predictable cable performance, they have better information available when making design decisions.
At Drexan, we believe quality and tolerance aren’t simply manufacturing specifications. They are engineering tools that help create the confidence required to design efficient, cost-effective systems.
- What Happens When the Application Doesn’t Fit Neatly into a Specification Table?
Not every heat trace application is straightforward. An engineer may be dealing with unusual piping configurations, demanding ambient conditions, hazardous locations, long circuit lengths, process temperature requirements or site-specific constraints. That’s when access to knowledgeable technical support becomes particularly valuable.
At Drexan, we don’t believe engineering support should end when the product is specified. Our team works with engineers to help evaluate applications, answer technical questions and identify potential challenges before installation.
- How Can I Reduce the Risk of Problems During Installation?
A good heat trace design still needs to work in the real world. Installation conditions can introduce challenges that aren’t always obvious during the design stage. Cable routing, connection systems, power locations, insulation, field conditions and installation practices can all affect the finished system.
That’s why we encourage engineers to think beyond the cable itself. Consider the following:
- How will the system actually be installed?
- Are the components designed to simplify field installation?
- Is technical support available if the contractor encounters a problem?
- Are installation instructions and documentation clear?
Drexan designs its heat trace systems with both engineering performance and practical installation in mind. Helping make installation easier can reduce uncertainty in the field and help ensure the engineer’s design intent is carried through to the finished system.
- How Do I Know the Product Will Be Consistent from One Project to the Next?
For an engineer, quality isn’t simply about whether a product passes inspection. It’s about predictability. If you’ve designed around a particular product characteristic, you need confidence that the cable delivered to the project will perform accordingly.
Drexan’s commitment to quality begins during manufacturing. Our heating cable is manufactured and tested under controlled processes designed to deliver consistent performance. That commitment to quality supports something extremely important to engineers, confidence in the specification.
When a product performs consistently, engineers can apply what they’ve learned from one successful project to the next.
- Who Will Help When Something Changes?
Projects change. Pipe sizes get revised. Equipment moves. Electrical requirements change. Field conditions don’t match drawings. A contractor has an installation question. A facility owner introduces a new operating requirement.
When that happens, engineers need more than a catalogue or data sheet. They need access to people who understand heat trace. Drexan’s technical team works collaboratively with engineers, contractors, distributors and facility operators throughout the project lifecycle.
We believe technical support should be part of the product, not an optional extra. Because solving a heat trace problem early is almost always easier and less expensive than solving it after installation.
Better Heat Trace Design Starts with Better Questions
The challenge for engineers isn’t simply selecting a heating cable. It’s designing a complete system that will perform reliably, install efficiently and continue protecting critical infrastructure under real-world conditions.
That’s why critical questions behind the specification matter:
- Can I rely on the wattage I’m designing around?
- Are the manufacturing tolerances tight enough to support an efficient design?
- Can I get knowledgeable technical support when the application gets complicated?
- Has quality been built into the manufacturing process?
- Will someone be there to help if conditions change in the field?
At Drexan Energy Systems, these are exactly the kinds of challenges we want engineers to bring us. We are here to understand the problem you’re trying to solve.
Have a Challenging Trace Heating Application?
Talk to Drexan’s technical team about your application. Whether you’re designing for freeze protection, process temperature maintenance, hazardous areas or another demanding application, we’re here to help you identify the right solution and design it with confidence.
Contact our North American Techline at 1-800-663-6873 to access our skilled team or book a Lunch & Learn at your engineering facility.
Engineers – Contact us to see if you qualify to receive a free cable sample kit, complete this form.
Trace Heating Redefined.