What are used to clean the cooling tower and other equipment by keeping foreign material distributed in the water until filters can remove them?
A. pH
B. Biocides
C. Dispersants
D. Corrosion inhibitors
A. Incorrect. A cooling tower requires pH adjustment for the health of the tower and equipment. These pH controls assist corrosion control and suppress organic growth (for example, algae).
B. Incorrect. Biocides control biological growth (for example, bacteria and algae) in the tower and in circulating water.
C. Correct. Dispersants are used to clean the cooling tower and other equipment by keeping foreign material distributed in the water until filters can remove them.
D. Incorrect. Corrosion inhibitors are chemicals added to cooling tower water to prevent corrosion in piping and heat exchange equipment.
You might also like to view...
Flanges always have an even number of holes in graduations of _____.
a. two b. four c. six d. eight
If a furnace is found with a puddle of oil in the combustion chamber, _____.
a. fire the burner for one or two seconds at a time b. manually light the oil and allow it to burn away c. turn on the main blower until it evaporates d. pump out or soak up the excess oil from the chamber
Match the finish and repair tool to its description.
A. hand snake B. tin snips C. tap and die set D. chassis punch set E. voltage tester F. adjustable wrench G. rim screw tool H. handle puller
In cavalier oblique, all receding lines are made true length, measured on the axes of the projection.
Answer the following statement true (T) or false (F)