This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Why are thermostatic expansion valves often used as the outdoor metering device for the heating ... (Read 102 times)

kwoodring

  • Hero Member
  • *****
  • Posts: 560
on: Jul 24, 2018
Why are thermostatic expansion valves often used as the outdoor metering device for the heating cycle?
 
  A) TEVs can be adjusted in the field to match the heat pump's performance with the climate it will be operating in.
  B) TEVs are easier to install on the outdoor coil.
  C) TEVs allow the system pressures to equalize in the off cycle, allowing the use of low starting torque compressors.
  D) The TEV can modulate the refrigerant flow over the wide range of temperatures experienced in the heating mode.

Question 2

What air property is measured in grains?
 
  A) The weight of air.
  B) Wet-bulb temperatures.
  C) Grains are used to measure the amount of water in the air.
  D) Relative humidity.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

okolip

  • Sr. Member
  • ****
  • Posts: 362
Reply #1 on: Jul 24, 2018
Answer to Question 1

D

Answer to Question 2

C


kwoodring

  • Member
  • Posts: 560
Reply 2 on: Jul 24, 2018
Excellent

ashely1112

  • Member
  • Posts: 347
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Electric Heating Coil Rectification Electric Heating Coil Rectification
The heart: (b) chambers and valves. The heart: (b) chambers and valves.
Oil pressure relief valves are spring loaded. The stronger the spring tension, the higher the oil ... Oil pressure relief valves are spring loaded. The stronger the spring tension, the higher the oil ...
Expansion Ratios for Liquefied Compressed Gases Expansion Ratios for Liquefied Compressed Gases
The effect of thermal expansion The effect of thermal expansion
Valves of the heart Valves of the heart
Video: Global warming and its effect on climate change

For a complete list of videos, visit our video library