Cathode protection systems of cross-country pipelines

Two types of cathode protection systems of cross-country pipelines are proposed without gas burning and electricity consumption from an outside power source. The functional principle of these systems is based on the original thermoelectric generators. The proposed thermoelectric generators perform through the pressure energy of natural transported gas during the temperature stratification. Numerical research of the proposed thermoelectric generators has been carried out. On the basis of research we have determined that a thermoelectric generator with vortex effect has 30% more produced electrical power. However, this generator uses natural gas pressure energy to a greater extent. (C) 2015 Published by Elsevier Ltd.