How to choose pressurization unit for HVAC applications

Just clearly mension what is HVAC applications??

This is obviously homework as you are asking about 6 questions about the same thing... it's probably all in your book, just read the chapter.

The supplier will size the unit for you, and they have the software for it. You have to give him the sizing parameters such as

1- maximum pressure in the system.
2- maximum temperature in the su=ystem
3- minimum temperature in the system
4- initial fill pressure or minimum pressure in the system
5- Total chilled water volume in the system

Drawing for pressurization unit