Exam (elaborations)
Refrigeration ESCO Exam Questions and Correct Answers
- Course
- Institution
Refrigeration ESCO Exam Questions and Correct Answers
[Show more]
Seller
Follow
Content preview
Refrigeration ESCOHeat which is added to a vapor after the change of state occurs is called - Question and
answerssuperheat
A refrigerant gives up heat when; - Question and answersit condenses
it is desirable for refrigerant in the suction line to be slightly superheated in order to... -
Question and answersensure liquid refrigerant does not enter the compressor
state of refrigerant in the suction line should be... - Question and answerslow pressure/
low temperature vapor
state of refrigerant entering the condenser is... - Question and answershigh pressure/
highly superheated vapor
the evaporator... - Question and answersTransfers heat from the refrigerated space to
the refrigerant
which is not a thermodynamic property of refrigerants - Question and
answersflammability
Zero psia (pounds per square inch absolute) is; - Question and answersa pressure
which cannot be further reduced
zero psig is the same as - Question and answersatmospheric pressure
the temperature at which moisture will start to condense from the air is called... -
Question and answersdew point temperature
a compound pressure gauge measures... - Question and answerspressure and vacuum
the main function of the condenser is to... - Question and answersTo remove heat from
the refrigerant
The heat removed from the refrigerant by the condenser is; - Question and
answersBoth sensible and latent heat.
in the evaporator... - Question and answerslatent heat is transferred from the
refrigerated space to the refrigerant
, an overcharge of refrigerant will cause... - Question and answersincreased head
pressure
the clearance space in a reciprocating compressor... - Question and answershas no
effect on compressor capacity
which of the following types of air conditioning compressors is most energy efficient -
Question and answerscentrifugal
the main function of the condenser is to... - Question and answersTo remove heat from
the refrigerant
Refrigerant R-134a vapor enters the condenser at 124psig, 100°F. it leaves the
condenser at 80°F. its pressure will be approximately... - Question and answers124psig
three basic types of condensers are water cooled, air cooled, and ___ cooled. -
Question and answersevaporative
10 lbs. of refrigerant passing through a water cooled condenser will lose 20 btu's of heat
per lb. if 10lbs of water passes through the condenser with an entering air temperature
of 80°F. the temperature of the water leaving the condenser is... - Question and
answers100°F
which of the following can not be used as a low ambient temperature control - Question
and answerscrankcase regulating valve
when testing the efficiency of an AIR COOLED condenser, the refrigerant condensing
temperature should be no more than ___ higher than the leaving air temperature -
Question and answersapproximately 30°F
when testing the efficiency of a WATER COOLED condenser, the refrigerant
condensing temperature should be no more than ___ higher than the leaving water
temperature - Question and answersapproximately 10°F
the first function the condenser must perform is to ___ the refrigerant before condensing
can occur - Question and answersde-superheat
A TXV is designed to maintain... - Question and answersconstant evaporator superheat
the AXV is designed to maintain... - Question and answersconstant evaporator pressure
A TXV has three operating pressures... - Question and answersevaporator pressure,
spring pressure, and suction bulb pressure
when mounting a TXV sensor bulb, which of the following is NOT true - Question and
answersit must be installed lower than the valve body
The benefits of buying summaries with Stuvia:
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
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
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 kpeter21739. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.39. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79271 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now