Chilled Water Systems
Eng. Mohamed Abdelfattah
Engineers House Courses
01027300900 - 01125068888
Cooling Coil Types
‫ــــــــــــــــــــــــــــــــــــــــ‬
➢ Fan Coil Unite (FCU)
➢ Air Handling Unite (AHU)
Cooling Coil Types
Nominal Capacity 60.000 BTY/H
FCU Ceiling Concealed Ducted
FCU Decorative
FCU Ceiling Concealed Ducted Selection
Data From Load Estimation (HAP )
✓
✓
✓
✓
✓
✓
✓
✓
✓
Air Flow Rate (CFM)
Extremal Static presser ( Estimated In.wg )
Air Entering ( DBT & WBT )
Water Flow Rate ( GPM )
Supply Chilled Water Temp. (S.CH.W )
Return Chilled Water Temp. (R.CH.W )
Delta (T F)
Sensible Coil Load
Total Coil Load
FCU Ceiling Concealed Ducted Selection
❑ Data From Catalog
FCU Ceiling Concealed Ducted Poisson Air Duct
FCU Ceiling Concealed Ducted Poisson
in room
FCU Ceiling Concealed Ducted Hook
✓ Flexible Connection
✓ Isolating Valve
✓ Sterner
UP
✓ Balance Valve
✓ 3 Or 2 Way Valve
FCU Ceiling Concealed Ducted Hook
UP
Air Handling Unit
Air Handling Unit Selection
Data From Load Estimation (HAP )
✓
✓
✓
✓
✓
✓
✓
✓
Air Flow Rate (CFM)
Air Entering ( DBT & WBT )
Water Flow Rate ( GPM )
Supply Chilled Water Temp. (S.CH.W )
Return Chilled Water Temp. (R.CH.W )
Delta (T F)
Sensible Coil Load
Total Coil Load
Extremal Static presser (In.wg )
Air Handling Unit Selection
Fan selection
Air Flow Rate (CFM)
& Extremal Static presser (In.wg )
Supplier selection from software
Air Handling Unit Selection
Coil selection
1.
Total Coil Load
2.
Sensible Coil Load
3.
Bypass Factor
4.
Supply Chilled Water Temp. (S.CH.W )
5.
Return Chilled Water Temp. (R.CH.W )
6.
Delta (T F)
7.
Water Flow Rate ( GPM )
Supplier selection from software
Air Handling Unit Selection
Filter selection
1.
Aluminum filter
2.
Bag filter
3.
Hepa filter
4.
Carbon filter
Bag filter
Aluminum filter
Hepa filter
Carbon filter
Supplier selection Depend on Application
Air Handling Unit Selection
Section And Operation Area
Arrangements for fans
Position of fan outlet for air distribution ducts
Supplier selection Depend on Application
Air Handling Unit Selection
Section And Operation Area
Fresh
air intake
with louver
and damper
Mixing
box
Mixing
and
exhaust box
Panel
filter
Bag
filter
Coil
Supplier selection Depend on Application
Electric
heater
Droplet
eliminator
and humidifier
Air Handling Unit Selection
Section And Operation Area
Multizone
Supply
air plenum
Absolute
filter
Fan
Supplier selection Depend on Application
Sound
attenuator
Air Handling Unit Selection
Section And Operation Area
Plate Heat Exchangers
Rotary Heat Wheels
Supplier selection Depend on Application
Air Handling Unit Selection
Section And Operation Area
Supplier selection Depend on Application
Chilled water pipe design
Chilled water pipe design
Black Steel Schedule 40
Seamless pipe
welding
Screw until
B31.3
B31.4 (ASME)
21/2”
Chilled water pipe design
Black Steel Schedule 40
Seamless pipe
Based on ASTM A53 - Standard Specification for Pipe, Steel,
Black and Hot-Dipped, Zinc-Coated, Welded and Seamless.
Chilled water pipe design
Black Steel Schedule 40
Seamless pipe
Chilled water pipe insulation
Fiberglass Thickness 2 “
Density ٣‫م‬/‫ كجم‬٩٦
Chilled water pipe Design
Chiller
69 GPM
1008 GPM
Ø 2 ½”
111 GPM
Ø 3”
88 GPM Ø 2 ½”
180 GPM Ø 3”
180 GPM
180 GPM
Ø 3”
Ø 3”
200 GPM Ø 3”
Ø 6”
939GPM
Ø 6”
828GPM
Ø 6”
740GPM
Ø 6”
560 GPM
Ø 4”
380 GPM
Ø 4”
200 GPM
Ø 3”
Chilled water pipe Fitting
Chilled water Pump
Chilled water Pump Tyaps
Horizontal Split case pump
End suction pump
long coupled
End suction pump
Close coupled
Inline pump
Chilled water Pump calculation
water flow rate (GPM )
All cooling coil flow rate in system
From catalog Selection
Head (Ftw)
Ch.w.Pump Head =
(Pipe loss + Fitting loss + Hook Up loss
+ Chiller pressure Drop
+ Cooling Coil pressure Drop ) x 0.10