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 103 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

olderstudent

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Photograph of a child with a cochlear implant. This device sends electrical impulses directly to the Photograph of a child with a cochlear implant. This device sends electrical impulses directly to the
An implantable cardiovert-defibrillator: A dual-chamber ICD device with a pulse generator is implant An implantable cardiovert-defibrillator: A dual-chamber ICD device with a pulse generator is implant
Valves in a vein. Valves in a vein.
Artificial Heart Device Artificial Heart Device
Capillaries act as bridges between the arteries and veins. Valves in the veins prevent backflow as ... Capillaries act as bridges between the arteries and veins. Valves in the veins prevent backflow as ...
The effect of thermal expansion The effect of thermal expansion
Video: Chromosome structural organization/ Mechanisms for chromosome movement Animation

For a complete list of videos, visit our video library