New at PipingDesign.com: 08 August 2001 - Heat Tracing

Heat Tracing
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Ensuring Uniform Heat Distribution in High-Temperature Process Piping
ChemicalProcessing.com

<<Piping for some hot process applications requires thermal maintenance devices to keep stream-end piping temperatures within specific limits. In such cases, conventional pipe jacketing has been regarded as a sufficient, but often very expensive, option. One alternative to pipe jacketing, tube tracing, does not effectively prevent problems caused by temperature variations along the process pipe wall. Frequently, tube tracing is used as an economical way to compensate for heat loss. In low-temperature applications with broad temperature envelopes, steam tracing can be effective. However, in these types of applications, the position of the tracers and the temperature distribution in the pipe material are not considered important. A new system for process temperature maintenance and uniform pipe wall temperatures consists of contoured bolt-on trace elements. Comparable in price to tube tracing, these elements are positioned strategically after heat dynamics in the operating piping system are modeled. To prevent problems caused by unwanted heat variation, frequently the key is ensuring uniform pipe wall temperature. To accomplish this, it is necessary to manage the heat distribution in the pipe wall.>> Received on Wed Aug 08 22:28:00 2001