100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
HVAC 2023 EPA 608 CORE Type 123 Exam Questions and Answers $12.49   Add to cart

Exam (elaborations)

HVAC 2023 EPA 608 CORE Type 123 Exam Questions and Answers

 2 views  0 purchase
  • Course
  • Institution

HVAC 2023 EPA 608 CORE Type 1,2,3 Exam Questions and Answers What characteristic or characteristics of CFCs make them more likely than other chlorine compounds to reach the stratosphere? Each chlorine atom in the stratosphere can destroy how many ozone molecules? Which refrigerant contains a CFC...

[Show more]

Preview 4 out of 36  pages

  • March 18, 2024
  • 36
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers
avatar-seller
HVAC 2023 EPA 608 CORE Type 1,2,3 Exam
Questions and Answers

1). What characteristic or characteristics of cfcs make them more likely than other chlorine
compounds to reach the stratosphere?

 Ans: Dont disolve iin water


2). Each chlorine atom in the stratosphere can destroy how many ozone molecules?

 Ans: 100,000 ozone molecules


3). Which refrigerant contains a cfc?
r500, r12, r113 or r11?

 Ans: Theyre all CFC's


4). Hydrochloric floriccarbon (hcfc) refrigerant contain?

 Ans: Hydrogen, chlorine, flourine and carbon


5). Which refrigerant is a chlorine free refrigerant?

 Ans: HFC R 134A


6). What is the result damage to the ozone layer?

 Ans: Increases in human skin cancer


7). According to the epa, chlorine in the stratosphere is believed to come primarily from the
cfcs rather than from volcanoes because

 Ans: -) The rise in the amount of chlorine measured in the stratosphere over the past 2
decades matches the rise of chlorine which has different natural sources of chlorune
overthe same period
-) The rise of chlorine in the statosphere matches the rise in CFCs over the same period
-) samples of air taken over erupting volcanoes shows that volcanoes contribute a small




PaperStoc.com Page 1 of 36

, amount of chlorine in the stratosphere compared to CFCs
-) ALL OF THE ABOVE


8). Which is a violation of the epa clean air act?

 Ans: -) falsifying or failing to keep required records
-) failing to keep evacuation levels before opening or disposing of appliances
-) knowingly releasing HFC's, HCFCs or CFC refrigerants
-) ALL OF THE ABOVE


9). Discarding of disposable cylinders is accomplished by

 Ans: Assuring that all refrigerant is recovered and that the cylinders are rendered
useless then recycle the metal


10). How much money can be awarded to a person who supplies information leading to a
conviction against the technician who is intentionally venting refrigerants or violatingsome
other provision of the epa clean air act

 Ans: $10,000


11). Cfc's will no longer be manufactured or imported into the u.s. after what year?

 Ans: 1995


12). Since july 1, 1992 it has been illegal to:

 Ans: Knowingly releasing HCF or HCFC refrigerants in the U.S.


13). Which compounds are controlled by the montreal protocol?

 Ans: -) chloric floric carbons
-) hydro chloric carbons
-) halons
-) all of the above


14). Epa regulations cover all ac and refrigeration equipment when containing what?

 Ans: Any refrigerant or refrigerant substitute


15). The syntetic substitute currently usedwith blends containing hcfcs is:



PaperStoc.com Page 2 of 36

,  Ans: Alcobenzine


16). What is the significance of atheotropic mixture:

 Ans: The mixture combines to act as a single compound refrigerant


17). Cooling occurs in a vapor compression refrigeration system when:

 Ans: Refrigerant liquid boils into a vapor


18). Ozone depletion in the stratosphere is what type of problem:

 Ans: Its a GLOBAL problem


19). The definition of recover is:

 Ans: To remove refrigerant in any condition from a system and store it an external
container without neccesarily testing it


20). Which of the following leak detection methods is considered by the epa to be the effective
for locating the general area of small leaks?

 Ans: Electronic ultrasonic testers


21). Recovery during low ambient temperatures will:

 Ans: Slow the recovery process


22). During dehydration of a refrigeration system the refrigeration system is heated to:

 Ans: Decrease dehydration time


23). To determine the safe pressure for leak testing one should use:

 Ans: Low side test data plate value




PaperStoc.com Page 3 of 36

, 24). Care should be used to avoid over filling refrigerant storage cylinders because:

 Ans: The internal pressure of the cylinders may rise and cause an explosion


25). When transporting cylinders containing used refrigerants dot requires that you:

 Ans: attach DOT classification tags


26). What is the significance of an azeotropic mixture?

 Ans: The mixture combines to act like a single component refrigerant


27). Cf cs are more likely to reach the stratosphere than other chlorine-containing compounds
because___________.

 Ans: They are chemically very stable


28). Chlorofuorocarbons, or cfcs, consist ofwhich of the following chemicals?

 Ans: Chlorine, fluorine and carbon


29). Which compound are the most damaging to the stratospheric ozone layer and have the
highest ozone depletion potential rating?

 Ans: CFCs


30). ________ test methods are assumed by the epa as the most effective methods for locating
the general area of small leaks.

 Ans: Electronic and ultrasonic


31). If a reclamation company is shipping a cylinder containing mixed refrigerants they may
______.

 Ans: Agree to destroy the refrigerant but typically a substantial fee is charged


32). One chlorine atom in the stratosphere is capable of destroying how many ozone
molecules?

 Ans: 100,000




PaperStoc.com Page 4 of 36

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller Academik001. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $12.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

83100 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$12.49
  • (0)
  Add to cart