METHOD FOR CONTROLLING THE VISCOSITY OF A FLUID IN A DEFINED VOLUME

摘要

A method is provided for heating the interior surface of a defined volume, such as the interior of a pipe or tank, to control the viscosity of a liquid contained within that volume. The method comprises providing a heater element such as a laminated composite heater element, impermeable to water. The heater element is disposed on the surface of the receptacle, and is heated at prescribed intervals and temperatures effective to heat the interior surface of the volume and alter the viscosity of the liquid contained therein.