HVAC Air Condition Esco 100% Correct Answers Verified Latest 2024 Version
2 views 0 purchase
Course
Academic Avengers Verified Papers
Institution
Academic Avengers Verified Papers
HVAC Air Condition Esco | 100% Correct
Answers | Verified | Latest 2024 Version
Heat which causes a change in temperature of a substance is called - Sensible Heat
Heat added to a substance without a rise in temperature is called - Latent Heat
Heat added to refrigerant in a vapor state after the...
HVAC Air Condition Esco | 100% Correct
Answers | Verified | Latest 2024 Version
Heat which causes a change in temperature of a substance is called - ✔✔Sensible Heat
Heat added to a substance without a rise in temperature is called - ✔✔Latent Heat
Heat added to refrigerant in a vapor state after the evaporation process is called - ✔✔Superheat
A scroll compressor moved refrigerant by means of - ✔✔Involute spirals
The movement of heat by way of fluid is called - ✔✔Convection
The movement of heat through a solid object is called - ✔✔Conduction
The standard unit for measuring the quantity of heat in a substance - ✔✔British Thermal Unit
A refrigerant gives up heat when it - ✔✔Condenses
Why must refrigerant in the suction line be slightly warmer than the saturation temperature? -
✔✔Prevent liquid slugging of compressor
It is desirable for refrigerant in the suction line to be slightly superheated in order to - ✔✔Insure liquid
refrigerant does not enter the compressor
A mechanical shaft seal is necessary on - ✔✔Semi-hermetic compressor
Liquid slugging is - ✔✔Liquid refrigerant in the compressor clearance space
, The clearance space in a reciprocating compressor - ✔✔Varies depending on compressor speed
Which of the following types of air conditioning compressors is most energy efficient - ✔✔Centrifugal
Which of the following represent the right order for the functions of a condenser? - ✔✔De-superheat,
condenses, sub-cools
Refrigerant R-134a vapor enters the compressor at 124 psig, 100°f. It leaves as a liquid from the
condenser sub-cooled 20°f, and the pressure will approximately - ✔✔18.4 psig
There are 3 basic types of condensers, the air cooled, the water cooled, and the _______ cooled -
✔✔Evaporative
10 lbs. of refrigerant passing through a water cooled condenser will lose 20 BTU's of heat per lb. If 10 lbs.
of water passes through the condenser with an entering temperature of 80°f. The temperature of the
water leaving the condenser is - ✔✔100°f
The heat removed from the refrigerant by the condenser is - ✔✔Both sensible and latent heat
An energy recovery ventilator is - ✔✔An air to air heat exchanger to recover heat
Which of the following can NOT be used as a low ambient temperature control? - ✔✔Crankcase
regulating valves
The state of refrigeration in the suction line should be - ✔✔Low pressure/ low temperature vapor
The state of refrigerant entering the condenser is - ✔✔High pressure/ highly superheated vapor
The evaporator - ✔✔Transfers heat from the refrigerated space to the refrigerant
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 hov. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
