Deck 4: Refrigerant Management

Question 1

Because of the danger __________ pose to the environment, they have not been produced since December 1995.

A) CFCs
B) HCs
C) HCFCs
D) HFCs

Answer 1

A

Question 2

When referring to ozone layer protection, we are concerning ourselves with ________?

A) tropospheric ozone
B) stratospheric ozone
C) atmospheric ozone
D) ionospheric ozone

Answer 2

B

Question 3

Which of the following statements is correct regarding the ozone depletion potential (ODP) of refrigerants?

A) CFC and HFC refrigerants have the same ODP
B) HCFC refrigerants have higher ODPs than CFC refrigerants
C) CFC refrigerants have higher ODPs than HFC refrigerants
D) CFC refrigerants have an ODP of zero

Answer 3

C

Question 4

The best mineral oils for use in refrigeration and air conditioning systems are __________.

A) aromatics
B) naphthenics
C) paraffinics
D) systematics

Question 5

Which of the following terms is defined as "the process by which refrigerant that has been removed from an air conditioning system is treated to reduce the levels of contamination in the system"?

A) refrigerant recovery
B) refrigerant reclaiming
C) refrigerant recycling
D) refrigerant reuse

Question 6

Which of the following would be classified as an azeotropic refrigerant?

A) R-500
B) R-409A
C) R-410A
D) R-123

Question 7

CFCs can exist in the atmosphere for more than ____ years.

A) 20
B) 30
C) 50
D) 60

Question 8

It is estimated that one chlorine atom can destroy up to ____ ozone molecules.

A) 50,000
B) 100,000
C) 150,000
D) 200,000

Question 9

In what year did it become unlawful to knowingly vent CFCs and HCFCs?

A) 1987
B) 1992
C) 1994
D) 1996

Question 10

List two common HC refrigerants.

Question 11

Which HFC refrigerant has taken the place of R-12 for use in domestic refrigeration?

A) R-134a
B) R-404A
C) R-409A
D) R-410A

Question 12

In what year did it become necessary for all HVAC technicians to become certified to handle refrigerant under Section 608 of the Clean Air Act?

A) 1987
B) 1992
C) 1994
D) 1996

Question 13

Bad ozone is found primarily in which of these regions?

A) troposphere
B) stratosphere
C) ionosphere
D) stratosphere and ionosphere

Question 14

Which of the following terms is defined as "the process of removing refrigerant from an air conditioning system and storing it in an external container"?

A) refrigerant recovery
B) refrigerant reclaiming
C) refrigerant recycling
D) refrigerant reuse

Question 15

Which oil type works well with HFC and HFC-based blended refrigerants?

A) mineral
B) esters
C) glycols
D) alkylbenzenes

Question 16

Define the following refrigerant acronyms: HFC HC CFC HCFC

Question 17

List four desired properties of refrigerants.

Question 18

Which is NOT a health risk associated with ozone depletion?

A) skin cancer
B) eye-related issues including cataracts
C) lung cancer
D) compromised immune systems

Question 19

Which refrigerant/s have an ODP of zero?

A) CFC
B) HCFC
C) HFC
D) HC
E) both c and d

Question 20

Which refrigerant type experiences the largest temperature glide?

A) azeotropes
B) near-azeotropes
C) zeotropes
D) binary refrigerant blends

Question 21

What is another name for global warming?

Question 22

As our industry has moved away from using CFC refrigerants and is in the process of moving away from HCFC refrigerants, more and more air conditioning and refrigeration applications are utilizing __________ and __________.

Question 23

What does the acronym GWP stand for when referring to the environment?

Question 24

List two commonly used HCFC refrigerants.

Question 25

List the four types of refrigerant certifications.

Question 26

What does the acronym ODP stand for when referring to the environment?