To prevent the liquid contents in a pipe from freezing, engineers often apply coils of heated wire or tubing called:
a. Insulation
b. Heat shielding
c. Heat tracing
d. Steam traps
a. Incorrect. Insulation is any substance that prevents the passage of heat, light, electricity, or sound from one medium to another.
b. Incorrect. Heat shielding is not used to prevent the liquid contents in a pipe from freezing.
c. Correct. Heat tracing is a coil of heated electric wire or steam tubing that adheres to or is wrapped around a pipe to increase the temperature of the process fluid, reduce fluid viscosity, and facilitate flow.
d. Incorrect. Steam traps are devices used to remove condensate from a steam system or piping and from steam tracing.
You might also like to view...
The longest leg of a 6-inch, 90-degree, Schedule 40 riser on a 10-inch, Schedule 40 header (OD is 10.75 inches) is _____ inch(es).
a. 7/16 b. 15/16 c. 1-1/4 d. 2-1/2
In an AC generator, the field windings are energized by the _____.
a. rotor b. stator c. armature d. exciter
American economics is based on the _____ system
a. Supply side economics c. Free enterprise b. Socialist d. Checks and balances
Determine the reactions at all supports and the force transmitted through the hinge at B.
