provided in this chapter. 1. What component of a heat pump controls the direction of refrigerant flow? 2. What term describes the point at which the heating ability of a heat pump equals the
provided in this chapter. 1. What component of a heat pump controls the direction of refrigerant flow? 2. What term describes the point at which the heating ability of a heat pump equals the
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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
Transcribed Image Text:TEST YOUR KNOWLEDGE
Answer the following questions using the information
provided in this chapter.
1. What component of a heat
the direction of refrigerant flow?
2. What term describes the point at which the
heating ability of a heat pump equals the
heat loss of the building?
A. Coefficient of performance.
B. Balance point.
C. Energy efficiency ratio.
D. Pressure regulation threshold.
3. Flow reversal is controlled by energizing or
de-energizing the
pump
controls
of the reversing valve.

Transcribed Image Text:4. What type of compressor is best for heat
pumps as it can handle pumping some
liquid refrigerant?
5. Name three types of refrigerant metering
devices commonly used on heat pumps.
6. Heat pumps require a defrost cycle to remove
frost from the
7. For a defrost cycle, a heat pump
automatically switches to the
8. True or false? Frost cannot form on the
outdoor coil when the coil temperature is
below 32°F (0°C).
9. What device terminates the defrost cycle?
10. At what temperature is a heat pump's
defrost cycle typically terminated?
11. What is the best (and most accurate) method
of charging refrigerant into a heat pump?
12. Which thermostat terminal controls the
indoor blower motor?
13. A heat pump's outdoor thermostat helps
control
14. What device prevents compressor operation
when the outdoor temperature is below 10°F
to 15°F (-12°C to -9°C)?
15. Which terminal on the indoor thermostat
C
coil.
mode.
controls the reversing valve?
16. Describe the three primary components of a
ductless heat pump system.
17. Explain one characteristic of a ductless
system that makes the system more energy
efficient than a conventional ducted system.
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