The document outlines various HVAC systems, focusing on different types of air conditioning units such as window units, split systems, and central air conditioning, along with their advantages and disadvantages. It details installation requirements and operational aspects, highlighting the efficiency, capacity, maintenance needs, and noise levels associated with each system. Additionally, it discusses the configurations of air handling units and the distribution of conditioned air throughout buildings.

1. HVAC
Heating, Ventilation and Air-Conditioning
EXECUTION DESIGN II

3. Window air condition (220 v) :
Advantages :
1- low cost.
2- Easy to apply in a solid wall
3- Doesn’t require maintenance and low break
downs
4- it contains one compressor so it consume a
low electricity
Disadvantages :
1- Noisy.
2- Limited capacity 1—3 hp
3- Needs a large opening in wall
4- its not easy to control the indoor unit
Installation requirements :
1- Wall opening to fit the unit
2- its prefer to be higher than window level

4. Split air condition (220 v ) :
Advantages :
1- Higher capacity up to 9 hp
2- Small opening in wall
3- low noise
4- Controllable indoor unit placement ( maximum 11 m
away from the exterior unit)
5- Different designs for indoor unit
Disadvantages :
1- Needs maintenance
2- Large scale for indoor unit
Installation requirements :
1- Minimum distance between the exterior unit and the
nearest wall 3 m.
2- Wall opening to access the exterior unit

5. SPLIT AIR CONDITIONING UNITS TYPES
1. Wall Mounted 2- Floor Mounted 2- Ceiling Mounted
5- Cassette
4- Concealed or Mini
central 6- Floor

6. HVAC SYSTEMS
SPLIT
UNIT
CHILLER SYSTEM
DX SYSTEM
(NO CHILLED WATER)
WATER COOLED
& COOLING TOWER
AIR COOLED
PACKAGE
UNIT)
Window
COMPACT
SPLIT
MINI SYSTEMS
CENTRAL

7. What’s HVAC ?
Heighting , ventilation and air conditioning.
HVAC
DX Systems
Mini
Window
Split AC
Floor & Ceiling
High Wall
Concealed
Free Stand
Cassette
Central Package
Compact
Split
Chilled water
systems
Air-Cooled
Chillers
Water-Cooled
Chillers

9. Package
units
compact split

11. MINI SYSTEM/SPLIT AIR CONDITIONING SYSTEM
• The split air conditioner comprises of two parts : - Outdoor Unit
-Indoor Unit
• The Outdoor unit : -fitted outside the room
-its component like a compressor , condenser and expansion valve
• The Indoor unit : -Comprises the evaporator or cooling coil and the cooling fan
- You don’t have to make a slot in the wall
• They have aesthetic looks and add beauty to the room
• It can cool from one to two rooms
• It is not noisy
• It can reach 48,000 BTU

12. Central air condition (Central rotary-reciprocating, turbine) ( 380 )
Advantages :
1- Higher capacity 500 – 600 hp
2- Cover whole building
Disadvantages :
1- Needs maintenance
2- Needs controlling
Installation requirements :
1- Outdoor space for installation cycle ( water
pumps , compressor water towers , chiller)
2- Air-conditioning rooms inside the building

13. Air handling unit
Large in size

14. Central air condition (Central rotary-reciprocating)
Controlling temperature:
1- control the whole building
-By using air handler in the last storey and use ducts , diffusers to distribute cooled air to all
storeys

15. AHU Room

16. Central air condition (Central rotary-reciprocating)
2- control each storey in building
- By using air handler in each storey and ducts
- to distribute the cooled air to different spaces
in the sotrey
3- control each room in building
- By using fan coils in each room

18. Chilled Water System

19. Single zone AHU: Air is supplied to several spaces
by a single AHU
Multi zone AHU: each space has its own separate supply air
duct and the conditions of the supply air are adjusted by
mixing the cool and warm air.

20. Dual Duct Systems:
Dual or double duct system is an air
conditioning system in which cold and warm air
is circulated throughout a building via two
parallel ducts. Hot air flows within one duct,
cold air within the other.

21. FAN COILING UNIT
1.Coils
2.Fans with motors
3.Air Filter
4.Controls (either a wall
thermostat, or an on-box thermostat)
5.Piping (return and supply)
6.Condensate drainage piping
7.Outside air grills

22. Circular Diffusers
Perforated Diffusers
Air Slot Diffusers
Four Way
Two Way Two Way
Square Diffusers
Swirl Diffusers
Egg Crate Diffusers
Linear Bar Diffusers
Three Way
HVAC Diffusers & Grills