The term heat tracing is inclusive for two methods used in the conservation of temperature. Inlinetsplice kit permits two or three cables to be spliced together. H56897 engineering specification for electrical heat. Heating medium for nonelectric tracing and jacketing can be steam, hot oil and hot water. Maintenance of electric heat tracing systems shall conform to all iec requirements for the use of electrical equipment. Electrical heat tracing is used to maintain or raise the temperature across a number of media including tanks, pipes, pumps and valves. There is no voltage or current on the outer skin of the heat tube. Mar 20, 20 suggested guidelines for the installation of a thermon electric heat tracing system. Description 1 1 rtv tube petk certificationsapprovals 1. This requirement shall not apply in industrial establishments where there is alarm indication of ground faults and the following condition apply. The provider of electrical heat tracing solutions to protect people, processes and infrastructure. In a laboratory environment, heat tracing may be required for pipes and vents. Thermal design, cable selection, electrical design, temperature control selection, and connection accessory selection. Suggested guidelines for the installation of a thermon electric heat tracing system.
As the inventor of selfregulating heat tracing technology, nvent raychem solutions are globally recognized as a leading provider of complete electrical trace heating systems. Electric heat tracing systems are designed to make up for the heat lost from process system equipment through the thermal insulation. Appendix for electrical tracing pesias seminar 32012. In some cases, the heat tracing system can be used for system heat up at initial startup or after a power shutdown. Electrical heat tracing systems and controls nvent raychem. Next to our range of heating cables, we offer a full suite of control and monitoring products and connected solutions for virtually any application.
Nec chapter 5 also applies to electric heat tracing found in hazardous classified locations, which is typical in industrial petrochemical facilities. Ansi american national standards institute iec 216 international electromechanical commission bs6351 british standard for electrical surface heating csa csa international appendix j. He is currently senior consultant for thermon manufacturing. Electric heat tracing installation thermon manufacturing. All heattracing systems for use at temperatures up to a continuous exposure maintain of 302f 150c and intermittent.
Electric heat tracing installation thermon manufacturing co. Their pride is to develop the best possible heat tracing solution. It shows the elements of the circuit as simplified forms, as well as the power as well as signal links in between the devices. The highly engineered conductive core increases its heat output when the temperature falls and decreases its heat output when the. A wiring diagram is a simplified standard photographic depiction of an electrical circuit. Types of heat tracing systems heat tracing can be accomplished through several methods, including electricity, steam, glycol, and even hot oil. However for the majority of applications, the choice falls between electric and steam tracing.
The system generates heat in the heat tube by the return electrical current flowing through the impedance of the inner skin of the heat tube. Tyco thermal controls can provide a complete system from electrical transformer and heattrace panel to power connections, heating cable, end terminations, glass tape and warning labels. Selfregulating heattracing has an advantage with respect to other heattracing products because this technology eliminates the possibility of heater burnout due to the inability to dissipate internally generated chet sandberg. These costs depend on factors such availability and reliability of energy supplies, cost of labor and local tracing practice. Internal heat tracing external heat tracing jacketing electrical tracing routing along andor insulating together with a hot line. The design of electrical resistance trace heating systems shall be overseen by persons knowledgeable of trace heating, following the design methodology for explosive atmospheres as specified by thermon engineering or computrace electric heat tracing design software. Apply to electrical designer, mechanic, technical associate and more. Installation of heat tracing systems must comply with all national and local codes. Ieee institute of electrical and electronics engineers its intertek testing services intertek etl semko nec u. The majority of commercial electric heat tracing systems in use today are of the resistive type and take the form of cables placed on the pipe.
The experts in electrical heat tracing systems, providing turnkey project services around the world. Without insulation, heat losses are generally too high to be offset by a conventional heat tracing system. Electric heat tracing systems a complete electrical heat tracing system is much more than just the heating cable. The first method is known as electrical heat tracing, and the second is known as steam tracing.
The electric heattracing system shall conform to this specification it shall be designed, manufactured and tested in accordance with the requirements stated in the applicable csa, fm, ieee and ul standards and us national and canadian electrical codes raychemesh57428heattracingspecen1809 1 engineering specification for. Intelligent solutions for electrical heat tracing eltherm. To specify components for an effectively designed, totally electric heat trace system. Design, installation and maintenance manual heat trace. Tyco thermal controls can provide a complete system from electrical transformer and heat trace panel to power connections, heating cable, end terminations, glass tape and warning labels. Nesc national electrical safety code ul 746b underwriters laboratories, inc.
Heat tracing product training manual chromalox training chapter 1. Heat tracing can also be used in laboratory and industrial applications where necessary for safe and reliable operation of the systems. Electric heat tracing cable1 selfregulating, powerlimiting, parallel constant watt or series resistance. Electrical heat tracing an overview sciencedirect topics. Raychem xltrace system installation and operation manual for.
This manual assumes that the proper heat tracing design has been completed according to the pipe freeze protection and flow maintenance design guide h55838. After joining thermon manufacturing in 1994, he worked on characterizing new metal alloy heat tracing capabilities and as vice president of electrical products he worked on advancing conductive polymer heating technology. The pipe is usually covered with thermal insulation to retain heat losses from the pipe. Persons involved in the installation and testing of electric trace heating systems shall. We develop complete solutions for processes in production, storage, handling, and transport. The need for properly installed and wellmaintained thermal insulation cannot be overemphasized. This section deals with the basic principles of heat transfer. Precision heat and control electrical heat tracing systems design guide. The electric heat tracing system shall conform to the specification. Electric trace heating also known as electric heat tape takes the form of an electrical heating element and run in physical contact along the length of a pipe. All heattracing applications with continuous exposure maintain.
Industrial heattracing installation and maintenance manual. Systems are almost exclusively vendordesigned, and the engineering can become complicated, especially in attempting to achieve an electrical balance in piping systems. The most significant factor in deciding steam or electric tracing is the initial investment on equipment, installation and the operating costs. See below for a list of electrical heat tracing products, and refer to our products page for more details. Emerson is where technology and engineering come together to create solutions for the benefit of our customers, driven without compromise for a world in action. Due to the risk of electrical shock, arcing and fire caused by product damage or improper usage installation or maintenance, a groundfault protection device is required for all heat tracing circuits.
Selfregulating heat tracing cables can adjust their output to the surrounding temperature down the cable length. Electric heat tracing systems convert electric power to heat and transfer it to the pipe and its contained fluid. Raychem xltrace system installation and operation manual. We bring warmth to places where others get cold feet. H56897 engineering specification for electrical heattracing. This report segments the market based on type, application, vertical, and region.
Selection of specific heaters within a family will be based on the heater power output being equal to or greater than the worst case heat loss as calculated in section 4. Electrical lockout may be required before working on this line or removal of thermal insulation. Electric heattracing systems a complete electrical heattracing system is much more than just the heating cable. Engineering specification for electrical heat tracing. Cable testing after a heat tracing circuit has been installed and fabricated and before the thermal insulation is installed, the heating cable should be tested to ensure electrical resistance integrity.
Appendix for electrical tracing pesias seminar 32012 csa c22. In some cases, the heat tracing system can be used for system heatup at initial startup or after a power shutdown. Installation shall be carried out under the supervision of a qualified person. A typical electrical heat tracing system is made of the heating cable, a junction box, and an end seal, along with other accessories or equipment. Emerson is where technology and engineering come together to create solutions for the benefit of our customers, driven. Pdf the key to reliable electrical heat tracing is proper thermal. The thermtrac insulated conductor is the heart of thermons skin effect heating system. Manufacturers who must keep product flowing need a heat trace partner they can trust. Consideration shall be given to the maintenance of the system and process equipment, to energy efficiency, and to. However, when electronic instruments are heat traced the type of heat tracing should be to the instrument manufacturers recommendation. As your reliable partner across the globe you and your requirements are the focus of our daily endeavour and commitment. The electric heat tracing system shall conform to this specification it shall be designed, manufactured and tested in accordance with the requirements stated in the applicable csa, fm, ieee and ul standards and us national and canadian electrical codes raychemesh57428heattracingspecen1809 1 engineering specification for.
For insulated externally heated surfaces, lower tclass. The demands placed on heat tracing systems vary based on the design parameters speci. To meet these needs, thermon manufactures the widest variety of electric heating cables and control systems in the world. Working in the petrochemical industry installingremoving various types of electrical components, heat tracing, and equipment. Vent drain on lines and equipment winterizing by draining require particular attention which must be given to. Electric heat tracing market size, growth, trend and. Electrical bounded slope requirements line reducer pulsation dampener duplex strainer vent silencer. Ieee 515 institute of electrical and electronics engineers. Heating fundamentals before plunging headfirst into a myriad of heat trace designs, products and applications, one must first have an understanding of the basics of heat loss and why heat trace products are used. Since electric heat tracing is a heat source, it must comply with secs. Engineering specification for electrical heattracing systems. Bond the metal sheathbraid of the heat tracing cable to a suitable earth terminal.
Consideration should be given to the use of electrical heat tracing and also to thermostatic control to ensure the manufacturers specified operating temperatures are not exceeded. In addition to piping and inline equipment such as pumps heat tracing heat tracing. Electrical heat tracing may be described as an insulated electrical heating cable, which is spiralled around the process fluid pipe, after which the pipe. Electric heat tracing, heat tape or surface heating, is a system used to maintain or raise the temperature of pipes and vessels using heat tracing cables. As a result, consideration must be made for this difference when calculating heat loss for pipes. Pdf on jan 1, 2015, chet sandberg and others published the key to reliable electrical heat tracing is proper thermal insulation find. A complete electric heat tracing system will typically include the following components. Feb 05, 2018 electrical heat tracing is used to maintain or raise the temperature across a number of media including tanks, pipes, pumps and valves. Trace heating takes the form of an electrical heating element run in physical contact along the length of a pipe.
Impedance tracing is costly and has limited application. Damaged heating cable can cause electrical arcing or fire. Heat tracing specification engineering specifications. Selfregulating heat tracing has an advantage with respect to other heat tracing products because this technology eliminates the possibility of heater burnout due to the inability to dissipate internally generated chet sandberg. Introduction design guide and installation details for selfregulating heating cable principle of operation rscc selfregulating heating cables regulate their heat output in response to changes in temperature. Electrical heat tracing is a system incorporating electrical heating cables attached to. Our engineers are committed to understanding your exact technical requirements.
Electrical heat tracing system, heat trace cable supermec. A complete electric heat tracing system will typically include the following components1. Maintenance of electric heat tracing systems shall conform to all iec requirements for the use of electrical equipment and with the requirements of the relevant heat tracing standard, usually either iec 62395 electrical resistance trace heating systems for industrial and commercial applications or iec 6007930 explosive atmospheres electrical. Installation of heattracing systems must comply with all national and local codes. We have also provided a design worksheet and bill of materials form, for your convenience.
Design guide and installation details for selfregulating. Your specialist for electrical heat tracing our passion your advantage. Reach electrical s pte ltd is a renowned industrial heating equipment supplier, specializing in heating elements, hotplates, temperature sensors, digital control accessories and customized heating systems. Contents introduction this design guide provides a stepbystep approach for the design, specification, and selection of a bill of materials for an electric heat tracing system. Do not use metal attachments such as pipe straps or tie wire. Selfregulating is the leading type of heat tracing cables and is expected to dominate the market during the forecast period. Thermal design the first step in designing a heat trace system is to. Find your solution we bring warmth to places where others get cold feet. Heat 3 reboiler single pass heat exchanger single pass heat exchanger double pipe heat exchanger. Thats why so many count on chromalox for the right mix of application engineering, products and site services for their process temperature maintenance, freeze protection, and winterization needs. This manual assumes that the proper heattracing design has been completed according to the pipe freeze protection and flow maintenance design guide h55838. The electric heat tracing market, based on type, has been segmented into selfregulating, constant wattage, mineralinsulated, skin effect. Components and electrical and magnetic interaction in impedance heattracing. National electrical code nfpa 70 nema national electrical manufacturers association nesc national electrical safety code ul underwriters laboratories, inc.
1203 1122 859 338 143 98 451 1390 1372 30 550 509 877 977 854 738 1454 1090 39 1250 354 619 76 1372 176 1553 940 717 1253 1523 62 3 1344 217 846 663 906 855 816 450 532 1187 450 783 695