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Thermoelectric Generators (TEGS) Application in Cathodic Protection

by | on | in Natural Gas Products | 0 Comments

Recently we announced that Linc Energy Systems now represents Gentherm GPT Thermoelectric generators; here is an application for these remote power sources.

Cathodic Protection (CP)

The natural gas industry uses cathodic protection to control corrosion of pipelines, wellhead casings and tanks, steel pier piles, and offshore oil platforms. Thermoelectric generators (TEGs) provide cost-effective, reliable, and continuous electrical current to difficult to reach CP sites.

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TEGs on CP systemCP System with GPT TEGs A metal pipeline is usually anodic, and by supplying an electric current, the pipe becomes passive or cathodic. As long as the electrical flow is arriving at the cathode (pipeline) faster than oxygen, then corrosion is prevented or significantly slowed.

Thermoelectric Generators (TEGS)

Thermoelectric generators produce electrical power by the direct conversion of heat from the combustion of fuel into electricity, offering a dependable supply of continuous current. The generators are usually located near the ground bed and fueled by gas from tanks, wellheads or pipelines. The output current can be adjusted using an integral variable resistor allowing the output current to match the ground bed resistance.

While a CP Interface design will vary depending on the TEG Model, the following are general offerings:

Cathodic Protection Panel Package Includes: Options:
  • Delivers unattended and continuous power for impressed current Cathodic Protection systems
  • Monitor and adjust power for CP load
  • Variable resistor used to reduce output voltage and modify current to ground bed
  • DC/DC converter is optional to extend the operating range
  • A lockable, stainless steel enclosure
  • A terminal block for up to 9mm (00 AWG) cable
  • An easy-to-read volt/ammeter
  • A variable resistor to control current output
  • An auto CP panel to monitor ground bed and adjust the output power
  • A current interrupter to aid in CP surveys
  • A split-current package permitting one generator to supply two cathodic loads

 

 Gentherm GPT offers several thermoelectric generator models for a CP application. Indeed, you may read more, download an application brief, or ask to speak with one of our sales representatives.

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About The Author

KC Forward is the Sales Director. He joined in early 2017, bringing a wealth of experience selling and leading sales teams over the last 20 years. KC was originally from Detroit and has been in Colorado since 1996. He is a widower and values family the most in life which includes two adult children. Board games, sports, reading, he does it all. He has a B.S. in Business Management from Oakland University in Michigan.

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