HVACR UNIT 16 Exam| 61 Questions and Answers 100% Correct
7 views 0 purchase
Module
HVACR UNIT
Institution
HVACR UNIT
HVACR UNIT 16 Exam| 61 Questions and Answers 100% CorrectHVACR UNIT 16 Exam| 61 Questions and Answers 100% CorrectHVACR UNIT 16 Exam| 61 Questions and Answers 100% CorrectHVACR UNIT 16 Exam| 61 Questions and Answers 100% CorrectHVACR UNIT 16 Exam| 61 Questions and Answers 100% Correct
A solution u...
HVACR UNIT 16 Exam| 61
Questions and Answers 100%
Correct
A solution used as a secondary refrigerant in chillers consisting of water and a
chemical which lowers the water's freezing point is called: - ANSWER - Brine.
Air-conditioning tube-and-fin coils are commonly available as: - ANSWER - Slab coils,
slant coils, "A" coils, and "N" coils.
An evaporator in which refrigerant enters as a saturated liquid vapor mix and leaves
as a superheated vapor is a: - ANSWER - Direct expansion evaporator.
An evaporator that covers the coils being cooled with liquid refrigerant is a: -
ANSWER - Flooded evaporator.
As a mixture travels through an evaporator, the liquid percentage: - ANSWER -
Decreases.
Chillers can be classified as: - ANSWER - Flooded or direct expansion.
Commercial refrigeration equipment for dry storage typically uses: - ANSWER - High-
temperature evaporators.
Commercial refrigeration equipment for eggs, produce, and dairy uses: - ANSWER -
Medium-temperature evaporators.
Commercial refrigeration equipment for ice cream storage typically uses: - ANSWER
- Low-temperature evaporators.
, Compared to air-conditioning evaporator coils, commercial refrigeration coils have: -
ANSWER - Fewer fins per inch.
Direct-expansion coils operating below the dew point of the entering airstream will:
- ANSWER - Cool the water vapor (humidity) in the air and condense it as droplets
on the coil.
Flooded evaporators are used in: - ANSWER - Large chillers.
For which of the following actions is the last part of the evaporator used? - ANSWER
- Superheating the refrigerant
Heat flows from the product into the evaporator because: - ANSWER - The
evaporator is at a lower temperature than the product.
How can a technician verify that a condenser and evaporator are an AHRI match? -
ANSWER - Check them out on the AHRI web site.
How deep should the condensate drain trap be? - ANSWER - 4 inches deep
How does a hot-gas defrost system work? - ANSWER - Hot compressor discharge gas
is routed to the evaporator.
How does an air-defrost system work? - ANSWER - Air from inside the store is
directed over the evaporator.
How is a brine solution created? - ANSWER - Salt and water are mixed.
If an evaporator does not have to superheat refrigerant vapor, which of the
following can be produced? - ANSWER - Greater cooling capacity
In a direct-expansion chiller: - ANSWER - The water is in the shell and the refrigerant
is in the tubes.
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 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 NursingTutor1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £9.57. You're not tied to anything after your purchase.
