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

Author Question: Semi-hermetic compressors on large commercial AC units use ________ to stage the compressor by ... (Read 46 times)

leo leo

  • Hero Member
  • *****
  • Posts: 566
on: Jul 27, 2018
Semi-hermetic compressors on large commercial AC units use ________ to stage the compressor by cutting out individual cylinders in response to load changes.
 
  A) Unloaders B) King valves
  C) Automatic expansion valves D) TXV valves

Question 2

There are no check valves or extra metering devices on most water-source packaged units because
 
  A) most water-source packaged units use suction line accumulators and charge compensators.
  B) its heat exchangers are most often made of copper, cupronickel, or stainless steel.
  C) water-source packaged units have a much lower operating temperature range than air-source units.
  D) most water-source packaged units use a single bi-flow thermostatic expansion valve.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Hdosisshsbshs

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

D


leo leo

  • Member
  • Posts: 566
Reply 2 on: Jul 27, 2018
:D TYSM

JCABRERA33

  • Member
  • Posts: 344
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Aerial and close-up views of a large biodiversity experiment in Cedar Creek, Minnesota. Each of the Aerial and close-up views of a large biodiversity experiment in Cedar Creek, Minnesota. Each of the
Managing large bands of grazing animals requires detailed knowledge of local landscapes, especially Managing large bands of grazing animals requires detailed knowledge of local landscapes, especially
Kaplan’s Three-Stage Model of Sexual Response Kaplan’s Three-Stage Model of Sexual Response
Nursing Interventions According to Stage of Severity for Suicide Risk Nursing Interventions According to Stage of Severity for Suicide Risk
Fetal Stage Fetal Stage
A simplified overview of the genes and regulatory units involved in the control of lactose metabolis A simplified overview of the genes and regulatory units involved in the control of lactose metabolis
Video: Bone elongation - processes at the epiphyseal plate

For a complete list of videos, visit our video library