4. Water–Ammonia System

Try these first

1. 1.

   What is the refrigerant used in the Water-Ammonia system?

   Hint

   Think of the chemical symbol for ammonia.

2. 2.

   Which component absorbs the ammonia vapor?

   Hint

   It is the second substance in the name of the system.

3. 3.

   What is the main refrigerant used in the Water-Ammonia system?

   • R-134a
   • Ammonia
   • Carbon Dioxide

   Hint

   Think about the chemical symbols you’ve studied.

4. 4.

   True or False: The Water-Ammonia system is suitable for applications above 0°C.

   • True
   • False

   Hint

   Recall the operational temperature range discussed.

5. 5.

   Design a small-scale Water-Ammonia system for a remote area. What considerations for materials and maintenance would you include to address the corrosive nature of ammonia?

   Hint

   Think about both the materials and the operational strategies.

6. 6.

   Given a set of conditions where water carryover is significant, propose a purification method that could be implemented to enhance system efficiency.

   Hint

   Think about how you can separate components before they adversely affect the system.