100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Test Bank For Modern Refrigeration and Air Conditioning 21st Edition by Andrew D. Althouse, Carl H. Turnquist, Alfred F. Bracciano, Daniel C. Bracciano, Gloria M. Bracciano 9781635638776 Chapter 1-55 Complete Guide. $18.99   Add to cart

Exam (elaborations)

Test Bank For Modern Refrigeration and Air Conditioning 21st Edition by Andrew D. Althouse, Carl H. Turnquist, Alfred F. Bracciano, Daniel C. Bracciano, Gloria M. Bracciano 9781635638776 Chapter 1-55 Complete Guide.

 8 views  0 purchase
  • Course
  • Modern Refrigeration and Air Conditioning 21st Edi
  • Institution
  • Modern Refrigeration And Air Conditioning 21st Edi

Test Bank For Modern Refrigeration and Air Conditioning 21st Edition by Andrew D. Althouse, Carl H. Turnquist, Alfred F. Bracciano, Daniel C. Bracciano, Gloria M. Bracciano 9781635638776 Chapter 1-55 Complete Guide.

Preview 4 out of 52  pages

  • October 10, 2024
  • 52
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Modern Refrigeration and Air Conditioning 21st Edi
  • Modern Refrigeration and Air Conditioning 21st Edi
avatar-seller
Alvon
Test Bank For Modern Refrigeration
and Air Conditioning




1. Which component is primarily responsible for compressing refrigerant in a
refrigeration cycle?


A. Evaporator
B. Compressor
C. Condenser
D. Expansion valve


Answer: B. Compressor

,Rationale: The compressor increases the pressure of the refrigerant, allowing it to
circulate through the system.


2. In an air conditioning system, what is the function of the evaporator?


A. To compress the refrigerant
B. To release heat from the refrigerant
C. To absorb heat from the surrounding air
D. To regulate refrigerant flow


Answer: C. To absorb heat from the surrounding air
Rationale: The evaporator absorbs heat from the air, cooling it as the refrigerant
evaporates.


3. What type of refrigerant is being phased out due to environmental concerns
related to ozone depletion?


A. R-134a
B. R-22
C. R-410A
D. R-1234yf


Answer: B. R-22
Rationale: R-22, a hydrochlorofluorocarbon (HCFC), is being phased out because it
contributes to ozone depletion.


4. What is the primary purpose of the condenser in a refrigeration system?


A. To cool the refrigerant by absorbing heat
B. To raise the refrigerant’s temperature
C. To condense the refrigerant vapor into a liquid
D. To control refrigerant pressure

,Answer: C. To condense the refrigerant vapor into a liquid
Rationale: The condenser releases heat from the refrigerant, causing it to condense
into a liquid.


5. What is superheat in a refrigeration system?


A. The temperature of the refrigerant after it has fully evaporated
B. The temperature difference between the refrigerant entering and leaving the
condenser
C. The increase in refrigerant temperature after it leaves the compressor
D. The amount of heat absorbed by the refrigerant in the evaporator


Answer: A. The temperature of the refrigerant after it has fully evaporated
Rationale: Superheat is the temperature of the vapor refrigerant above its saturation
temperature after it has fully evaporated.


6. Which refrigerant is known for being environmentally friendly with low global
warming potential (GWP)?


A. R-134a
B. R-22
C. R-410A
D. R-1234yf


Answer: D. R-1234yf
Rationale: R-1234yf is widely used due to its low GWP and environmental benefits
compared to older refrigerants.


7. What type of oil is generally used with HFC refrigerants?


A. Mineral oil

, B. Alkylbenzene oil
C. Polyolester oil
D. PAG oil


Answer: C. Polyolester oil
Rationale: Polyolester oils are compatible with HFC refrigerants, offering good
miscibility and stability.


8. The efficiency of a refrigeration system is often measured by which of the
following?


A. Superheat
B. Subcooling
C. Coefficient of Performance (COP)
D. Refrigerant charge


Answer: C. Coefficient of Performance (COP)
Rationale: COP is a measure of a system's efficiency, representing the ratio of cooling
or heating provided to the energy consumed.9. What is the purpose of the
expansion valve in a refrigeration system?


A. To increase refrigerant pressure
B. To convert liquid refrigerant into vapor
C. To reduce refrigerant pressure and temperature
D. To circulate refrigerant through the system


Answer: C. To reduce refrigerant pressure and temperature
Rationale: The expansion valve reduces the pressure and temperature of the
refrigerant, allowing it to evaporate in the evaporator and absorb heat.


10. Which component of the refrigeration cycle is responsible for rejecting heat to
the surrounding environment?

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 Alvon. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $18.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

67096 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
$18.99
  • (0)
  Add to cart