1. Systems and Applications Basic Types Direct Expansion Air-WaterAll-AirAll-Water

2. Systems and Applications, cont’d. Direct Expansion Central Station Unitary or Packaged Window Type Split Vertical or Free Standing Roof Top

3. Direct Expansion (DX)Systems When the cooling medium (Freon, or R-134a, for example ) expands in the cooling coil, which directly provides cold air to the space. Capacities: ½ to 50 tons

4. Systems and Applications, cont’d. Split Wall- mounted Ceiling Casette Ducted Split VRV/VRF

5. Ton of Refrigeration Define: 1 Ton of refrigeration =12,000 Btu/hr = 3,515 kW Which is the refrigeration load necessary to Produce one ton of ice in one day.

6. Unitary Systems Window Type Capacities: ½ to 2 tons.

7. Unitary Systems Split type Capacities: 1 to 6 tons. Disadvantages: Cannot handle fresh air

8. Unitary Systems, Vertical, or Free Standing Capacities: 3 to 10 tons. Application: Computer rooms

9. Vertical, or Free Standing

10. Unitary Systems, Packaged Roof top Capacities: 5 to 50 tons. Large individual halls, such as supermarkets

11. Packaged Roof top, cont’d.

17. MODULAR PACKAGE UNIT (PMX)

18. Central station

19. AIR HANDLING UNIT (BX)

20. DOUBLE SKIN AIR HANDLING UNIT ( 7 Ton)

21. DOUBLE SKIN AIR HANDLING UNIT

22. DOUBLE SKIN AIR HANDLING UNIT (10 Ton)

23. CONDENSING UNIT (CX)

24. Fan Coil, Concealed Capacities: 3 to 10 tons. Application: on top of false ceiling

25. Air Distribution Systems 1- All Air Systems: When only air enters the space - Single Duct, Constant Volume (CV) -Single Duct, Variable Air Volume(VAV) -Constant Volume, Multi Zone -Double Duct, Constant Volume -Terminal Reheat 2- Air-Water Systems: When both air and water enter the space. Pipes are used for water as a two-pipe system. 3- All Water Systems: When only water enters the space. - Four Pipe System - Two Pipe System

26. Single Duct, Constant Volume (CV)

27. Single Duct, Variable Air Volume (VAV)

28. Constant Volume, Multi Zone

29. Double Duct, Constant Volume

30. Terminal Reheat

31. Air-Water Systems

32. All Water Systems: Four Pipe

33. All Water Systems: Two Pipe

34. Chillers Capacities: 20 to 500 tons.

35. Air-Cooled Chillers

36. Chillers

43. Air–Cooled Chiller

44. Chiller being Lifted on Roof Top

45. Chiller

47. Exhaust Fans