Which of the following may cause exposure to harmful microorganisms?
A. Circulating cooling water through a heat exchanger with ruptured tubes
B. Improper cooling tower lineup
C. Failure to treat cooling water chemically
D. Improper chemical addition to the cooling tower
A. Incorrect. Circulating cooling water through a heat exchanger with ruptured tubes will not cause exposure to harmful microorganisms.
B. Incorrect. Improper cooling tower lineup will not cause exposure to harmful microorganisms.
C. Correct. Failure to treat cooling water chemically may cause exposure to harmful microorganisms.
D. Incorrect. Improper chemical addition to the cooling tower will not cause exposure to harmful microorganisms.
You might also like to view...
Explain the difference between surface condensation and concealed condensation. Explain in which situations these two types of condensation would occur and why.
What will be an ideal response?
____________________ is a condition caused by a lack of sugar in the diet
Fill in the blank(s) with the appropriate word(s).
Two methods can be used for producing solar panels for electric power generation. Method 1 will have an initial cost of $550,000, an AOC of $160,000 per year, and $125,000 salvage value after its 3-year life. Method 2 will cost $830,000 with an AOC of $120,000, and a $240,000 salvage value after its 5?year life. Assume your boss asked you to determine which method is better, but she wants the analysis done over a 3-year planning period. You estimate the salvage value of method 2 will be 35% higher after 3 years than it is after 5 years. If the MARR is 10% per year, which method should the company select?
What will be an ideal response?
A typical evaporator operating temperature in an air-conditioning system is ____.
A. 40°F B. 55°F C. 75°F D. 200°F