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


Supply Fan


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


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


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


Heating / Reheating

Sand traplouvers

HEPA FilterH13

Empty Module

Bag FilterF9 Coil

Steam Humidifier


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


2-Filter G4

3-Bag Filter F9

4-Cooling Coil



7-Supply Fan

Mixing Box

Panel FilterG4

Supply Fan


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


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


Pharmaceutical Clean Room Class “ D “

1-Mixing plenum

2-Cooling Coil

3-Reheating Coil

1-Mixing plenum

2-Heating coil

3-Steam Humidifier


2-Filter G4

3-Cooling Coil



6-Supply Fan

7-Rigid Bag Filter F9

Mixing Box

Panel FilterG4

Supply Fan


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


7-Reheating Coil

8-Supply Fan

9-HEPA Filter H13

louversSand trap

Fresh Intake

Panel FilterG4

Bag FilterF9 Supply Fan


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


6-Reheating Coil

7-Supply Fan


louversSand trap

Fresh Intake

Panel FilterG4

Rigid Bag FilterF9Supply Fan


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


Return Intake

Panel FilterG4 Rigid Bag Filter

F9

DX Cooling Coil

Steam Reheating Coil

Supply Fan

Return Intake


F9

After cooler

Supply Fan

1-Return Intake

2- Filter G4

3-Decisscent Wheel

3-After Cooler Coil

5-Supply Fan


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


Fresh Intake


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


4. Hot Water Inlet Temperature

5. Hot Water Temperature Drop

Electric Heater

1. Air Rate

2. Heating Capacity


4. Maximum Surface Temperature

Heat Pump

1. Air Rate

2. Heating Capacity


4. Maximum Condensing Temperature

Steam Coil

1. Air Rate

2. Heating Capacity


4. Available Steam Pressure

Steam Humidifier

1. Air Rate

2. Heating Capacity


4. Maximum Steam Pressure or Temperature

Air Washer

1. Air Rate

2. Water Consumption


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


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


Filters

Ultra Efficiency Filter ( ULPA ) ( U ) < 0.3 μm

99.9995 %600400U15

Rated Efficiency

Substitution ΔP Pa

Rated ΔP PaType


Filters

Special Filters


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

Documents

Air Handling Units