What are the methods of PWHT?

Question

Accepted Answer

PWHT methods include resistance heating, induction heating, and flame heating.

Resistance heating involves passing an electric current through the material to be heated.
Induction heating uses electromagnetic induction to heat the material.
Flame heating utilizes a flame or burner to heat the material.
Other methods may include radiant heating or furnace heating.

Accepted Answer

Local PWHT may be carried out using high velocity gas burners, infra red burners, induction heating and high or low resistance heating elements. Electrical equipment is more easily installed and controlled than heating using natural gas or propane, particularly on site