Chapter 11

Question 1

In managing multiple types of properties, Gus has used various refrigerants. But the most common refrigerants are members of the ______ family.

a. water
b. ammonia
c. carbon dioxide
d. fluorocarbon

Answer 1

d. fluorocarbon

Question 2

Whle their properties make ______ ideal as refrigerants, the stability of these compounds with their chlorine content has linked them to depletion of the earths’s protective ozone layer.

Answer 2

CFC’s

Question 3

Since Susan is new to facilities management, her supervisor, Dave, explains that a ______ is a device used to transfer heat between either the interior or exterior air and the refrigerant.

Answer 3

Heat exchange

Question 4

Earl correctly notes to his coworker Louise that in the refrigeration system, a(n) ______ regulates the flow of the refrigerant.

Answer 4

Metering device

Question 5

Amy is aware that the cooling capacity of a refrigeration system is determined by the:

Answer 5

the rate of evaporation of the refrigerant

Question 6

If property manager Ed is lookin for a water chiller-type compressor that is simple to operate, with minimal moving parts, he should select a _______ compressor.

a. centrifugal
b. reciprocating
c. rotary
d. helical screw

Answer 6

a. centrifugal

Question 7

As a seasoned facilities manager, Casey has installed and repaired ______ condensers for many years. He is able to assert that such condensers with blow-through fans use more energy, but are more easily maintained than those withdraw-through fans.

a. air-cooled
b. air-heated
c. evaporative
d. water-cooled

Answer 7

c. evaporative

Question 8

Property manager Yolanda knows that _______ cooling towers provide constatnt air-flow with fans, instead of being dependent on the wind and favorable weather conditions.

a. mechanical draft
b. natural draft
c. manufactured current
d. drift current

Answer 8

A. Mechanical-draft

Question 9

A _______ evaporator is the best choice for a walk-in cooler where space temperature will be held well above freezing.

Answer 9

Finned-tube evaporator

Question 10

A building manager for a smaller commercial property in southern area of North America would most likely select a ______________ heat pump, as they are the cheapest to install and are generally used where average temperatures do not fall below 17 degrees F.

a. air-to-air
b. air-to- water
c. wate-to-air
d. . water to water

Answer 10

d. water to water

Question 11

Pat asks her coworker Wayne what type of refrigerant is used in an absorption refrigeration system. He replies:

a. a refrigerant blend
b. ammonia
c. water
d. HCFC’s

Answer 11

a. refrigerant blend