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

Author Question: How can a PH diagram be used to select the system compressor? What will be an ideal ... (Read 99 times)

londonang

  • Hero Member
  • *****
  • Posts: 540
on: Jul 26, 2018
How can a PH diagram be used to select the system compressor?
 
  What will be an ideal response?

Question 2

What are the constant quality lines?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

macagn

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jul 26, 2018
Answer to Question 1

Plot the system on the PH diagram
Determine the amount of heat picked up in the evaporator by subtracting the enthalpy of the saturated mix entering the evaporator from the enthalpy of the gas leaving the evaporator.

Divide this into the required system capacity to get lbs/min of refrigerant Calculate the required gas volume by multiplying the volume of the gas entering the compressor times the lbs/min
Determine the compressor operating pressures from the condenser and evaporator horizontal lines.
Match compressor volume at the determined operating pressures

Answer to Question 2

The constant quality lines start at the bottom and extend upward toward the critical point located in top center of the saturation curve. These lines represent the percentage of vapor in the saturated refrigerant.


londonang

  • Hero Member
  • *****
  • Posts: 540
Reply #2 on: Jul 26, 2018
TY


macagn

  • Sr. Member
  • ****
  • Posts: 345
Reply #3 on: Jul 26, 2018
You're welcome


« previous next »
 

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Lymphatic vessels (green) pick up excess tissue fluid, purify it in lymph nodes, and return it to th Lymphatic vessels (green) pick up excess tissue fluid, purify it in lymph nodes, and return it to th
Heart diagram Heart diagram
The Formation of the Solar System The Formation of the Solar System
anatomy diagram anatomy diagram
Diagram of the heart showing normal conduction pathway. Diagram of the heart showing normal conduction pathway.
The carnitine acyltransferase system, for transport of fatty acyl-CoAs into mitochondria The carnitine acyltransferase system, for transport of fatty acyl-CoAs into mitochondria
Video: Phlebotomy

For a complete list of videos, visit our video library