Download - Air Handling Units
Air Handling Units
I- Arrangements
1- Year – Round Commercial AHU
1-Mixing plenum
2-Cooling Coil
1-Mixing plenum
2-Electric Heater
1-Mixing plenum
2-Filter G4
3-Cooling Coil
4-Electric Heater
5-Supply Fan
Mixing Box
Panel FilterG4 Electric Heater
Supply Fan
Cooling CoilSHF= 0.9 : 0.7
2- Year – Round Commercial AHU Central Heating
1-Mixing plenum
2-Cooling Coil
1-Mixing plenum
2-Heating coil
1-Mixing plenum
2-Filter G4
3-Cooling Coil
4-Heating coil
5-Supply Fan
Mixing Box
Panel FilterG4
Supply Fan
Cooling CoilSHF= 0.9 : 0.7 Heating Coil
3- Year – Round Commercial AHU in Sandy Climate
1-Mixing plenum
2-Cooling Coil
1-Mixing plenum
2-Electric Heater
1-Mixing plenum with Fresh air intake with sand trap louvers
2-Filter G4
3-Cooling Coil
4-Electric Heater
5-Supply Fan
Mixing Box
Panel FilterG4 Electric Heater
Supply Fan
Cooling CoilSHF= 0.9 : 0.7
Sand traplouvers
4- Year – Round Commercial AHU Cinema / Theater / Musical Recording
1-Mixing plenum
2-Cooling Coil
1-Mixing plenum
2-Electric Heater
1-Mixing plenum
2-Filter G4
3-Cooling Coil
4-Electric Heater
5-Supply Fan
6- Sound attenuator
Mixing Box
Panel FilterG4 Electric Heater
Supply Fan
Cooling CoilSHF= 0.9 : 0.7 Sound Attenuator
5- Year – Round AHU in Dry Summer Climate
1-Mixing plenum
2-Precooling Coil
3-Air Washer
1-Mixing plenum
2-Heating Coil
3-Air Washer
1-Mixing plenum
2-Filter G4
3-Precooling Coil
4-Heating Coil
5-Air Washer
6-Eliminator
7-Supply Fan
Mixing BoxPanel Filter
Precooling Coil
Heating Coil
Air Washer
Eliminator
Supply Fan
6- Year – Round AHU Year- Round Humidity Control
Pharmaceutical Clean Single Room Class “ C “
1-Mixing plenum
2-Cooling Coil
3-Reheating Coil
1-Mixing plenum
2-Heating coil
3-Steam Humidifier
1-Mixing plenum with Fresh air intake with sand trap louvers
2-Filter G4
3-Bag Filter F9
4-Cooling Coil
5-Heating / Reheating Coil
6-Empty Module/ Steam Humidifier
7-Supply Fan
8- Built-in HEPA Filter H13
Mixing Box
Panel FilterG4
Supply Fan
Cooling CoilSHF= 0.7 : 0.6
Heating / Reheating
Sand traplouvers
HEPA FilterH13
Empty Module
Bag FilterF9 Coil
Steam Humidifier
7- Year – Round AHU Year- Round Humidity Control
Pharmaceutical Clean Room Class “ C “ with terminal HEPA Filters
1-Mixing plenum
2-Cooling Coil
3-Reheating Coil
1-Mixing plenum
2-Heating coil
3-Steam Humidifier
1-Mixing plenum with Fresh air intake with sand trap louvers
2-Filter G4
3-Bag Filter F9
4-Cooling Coil
5-Heating / Reheating Coil
6-Empty Module/ Steam Humidifier
7-Supply Fan
Mixing Box
Panel FilterG4
Supply Fan
Cooling CoilSHF= 0.7 : 0.6
Heating / Reheating
Sand traplouvers
Empty Module
Bag FilterF9 Coil
Steam Humidifier
8- Year – Round AHU With Return Air and Fresh Air Units
Pharmaceutical Clean Room Class “ C “ with terminal HEPA Filters
Empty Module
Mixing Box
Steam Humidifier
Panel FilterG4
Panel FilterG4
Sand traplouvers
Cooling CoilSHF= 0.8 : 0.7
Precooling CoilSHF= 0.75 : 0.65
Bag FilterF9
Heating Coil
Return Intake
Return Fan
Exhaust
Supply Fan
Swirl DiffuserWith Treminal HEPA FilterH13
Fresh Air Fan
Preheating CoilFresh Intake
Fresh Air Duct
Return Air Unit
Supply Air Unit
Fresh Air Unit
9- Year – Round AHU Year- Round Humidity Control
Pharmaceutical Clean Room Class “ D “
1-Mixing plenum
2-Cooling Coil
3-Reheating Coil
1-Mixing plenum
2-Heating coil
3-Steam Humidifier
1-Mixing plenum with Fresh air intake with sand trap louvers
2-Filter G4
3-Cooling Coil
4-Heating / Reheating Coil
5-Empty Module/ Steam Humidifier
6-Supply Fan
7-Rigid Bag Filter F9
Mixing Box
Panel FilterG4
Supply Fan
Cooling CoilSHF= 0.7 : 0.6
Heating / Reheating
Sand traplouvers
Empty Module
Rigid Bag FilterF9Coil
Steam Humidifier
10- Year – Round All Fresh Outside Air AHU Year- Round Humidity Control Surgical Area in Hospitals
1-Fresh Intake
2-Cooling Coil
3-Reheating Coil
1-Fresh Intake
2-Preheating coil
3-Steam Humidifier
4-Reheating Coil
1- Fresh air intake with sand trap louvers
2-Filter G4
3-Bag Filter F9
4-Preheating Coil
5-Cooling Coil
6-Empty Module/ Steam Humidifier
7-Reheating Coil
8-Supply Fan
9-HEPA Filter H13
louversSand trap
Fresh Intake
Panel FilterG4
Bag FilterF9 Supply Fan
Cooling CoilSHF= 0.5 : 0.45
Preheating Coil
Empty ModuleSteam Humidifier
Reheating Coil
HEPA FilterH13
11- Year – Round All Fresh Outside Air AHU Year- Round Humidity Control Intensive Care in Hospitals
1-Fresh Intake
2-Cooling Coil
3-Reheating Coil
1-Fresh Intake
2-Preheating coil
3-Steam Humidifier
4-Reheating Coil
1- Fresh air intake with sand trap louvers
2-Filter G4
3-Preheating Coil
4-Cooling Coil
5-Empty Module/ Steam Humidifier
6-Reheating Coil
7-Supply Fan
8-Rigid Bag Filter F9
louversSand trap
Fresh Intake
Panel FilterG4
Rigid Bag FilterF9Supply Fan
Cooling CoilSHF= 0.5 : 0.45
Preheating Coil
Empty ModuleSteam Humidifier
Reheating Coil
12- Storage of Raw Candy , Gum and Gelatine
1-Return Intake
2- Filter G4
3-DX Cooling Coil
4-Reheating Steam Coil
5-Supply Fan
6-Rigid Bag Filter F9
Return Intake
Panel FilterG4 Rigid Bag Filter
F9
DX Cooling Coil
Steam Reheating Coil
Supply Fan
Return Intake
Panel FilterG4 Rigid Bag Filter
F9
After cooler
Supply Fan
1-Return Intake
2- Filter G4
3-Decisscent Wheel
3-After Cooler Coil
5-Supply Fan
6-Rigid Bag Filter F9
13- All Fresh Outside Air Low Dew Point
Industrial Dehumidification Applications
1-Fresh Intake
2- Filter G4
3-Decisscent Wheel ( 1 )
4-After Cooler Coil ( 1 )
5-Decisscent Wheel ( 2 )
6-After Cooler Coil ( 2 )
7-Supply Fan
8-Rigid Bag Filter F9
Fresh Intake
Panel FilterG4 Rigid Bag Filter
F9
After cooler
Supply Fan
After cooler
Decisscent Wheel Decisscent Wheel
14- Year – Round AHU Year-Round Cooling
1-Mixing plenum
2-Chilled Water Spray 1-Mixing plenum
2-Air Washer
1-Mixing plenum
2-Filter G4
3-Air Washer / Chilled Water Spray
4-Eliminator
5-Supply Fan
Mixing Box
Panel FilterAir Washer ( Winter )
Eliminator
Supply FanChilled Water Spray ( Summer )
With ModulatingDampers ( winter )
II- Modules Specifications
Specifications
Main Additional Sub-additional
Heat Transfer Fluid Mech. Combustion
Psychrometry Production Electrical Instrumentation Civil ArchitectureControl
Mechanical
Electrical
Chemical Enviromental
Power
Sound
Mechanical
Electrical
Computer Computer
Main Specifications
Psychrometric Calculations
• Supply Air Rate m3/ hr
• Outside Air Rate in m3 / hr
• Cooling Capacity in tons-ref ( or kW )
• Heating Capacity in kW
• Steam Humidifier Capacity in kg / hr
• Washer Capacity make-up water in lit / min
Cooling Coils
Chilled Water Cooling Coil
1. Air Rate
2. Cooling Capacity
3. SHF
4. Air Inlet Condition
5. Chilled Water Inlet Temperature
6. Chilled Water Temperature Rise
DX Cooling Coil
1. Air Rate
2. Cooling Capacity
3. SHF
4. Minimum Evaporating Temperature
Heating Coils
Hot Water Coil
1. Air Rate
2. Heating Capacity
3. Air Inlet Condition
4. Hot Water Inlet Temperature
5. Hot Water Temperature Drop
Electric Heater
1. Air Rate
2. Heating Capacity
3. Air Inlet Condition
4. Maximum Surface Temperature
Heat Pump
1. Air Rate
2. Heating Capacity
3. Air Inlet Condition
4. Maximum Condensing Temperature
Steam Coil
1. Air Rate
2. Heating Capacity
3. Air Inlet Condition
4. Available Steam Pressure
Steam Humidifier
1. Air Rate
2. Heating Capacity
3. Air Inlet Condition
4. Maximum Steam Pressure or Temperature
Air Washer
1. Air Rate
2. Water Consumption
3. Air Inlet Condition
4. Operating Wet bulb
5. Wetting Ratio
6. Humidifying Efficiency
Filters
Coarse Dust Filter ( G ) < 7 μm > 0.7 μm
90 – 95 %250150G4
75 – 90 %25075G3
65 – 75 %18050G2
60 -65 %15030G1
Rated Efficiency
Substitution ΔP Pa
Rated ΔP PaType
Air Rate is recommended
Filters
Fine Dust Filter ( F ) < 0.7 μm > 0.5 μm
50 – 60 %35085F5
95 – 98 %450250F9
90 – 95 %450150F8
80 – 90 %350120F7
60 – 80 %350100F6
Rated Efficiency
Substitution ΔP Pa
Rated ΔP PaType
Air Rate is recommended
Filters
High Efficiency Filter ( HEPA ) ( H < 0.5 μm)
< 99.95 %600350H13
< 99.995 %600350H14
< 99.5 %600320H12
< 95 %600300H11
< 85 %600270H10
Rated Efficiency
Substitution ΔP Pa
Rated ΔP PaType
Air Rate is recommended
Filters
Ultra Efficiency Filter ( ULPA ) ( U ) < 0.3 μm
99.9995 %600400U15
Rated Efficiency
Substitution ΔP Pa
Rated ΔP PaType
Air Rate is recommended
Filters
Special Filters
Air Rate is recommended
1. Sand Trap Louvers
2. Deodorization ( activated Carbon Panel )
3. Gaseous Filter
4. Viscous Filter
5. Electro-static Filter
6. Air Washer
7. Ultraviolent Ray Lamps
Filters
Clean Room Classes
100,000M6.5100,000D
10,000M5.510,000C
1,000M4.51,000B
100M3.5100A
10M2.510A+
1M1.51A++
Maximum Number of Particles 0.5 μm
per ft3
Metric Class
M x.y
Old Class
P = 10x ( 0.5/d )2.2
Blower
1. Air Rate
2. External Static Pressure Drop ( Static Pressure Drop of Modules Devices not included )
3. Minimum Efficiency