Download - HVAC Sysems & AHU
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Introduction to HVAC Systems
Objective Comfort Zone
Temperature 22 °C 26 °C
Relative Humidity 40 % R.H 60 % R.H
Comfort Zone 24 °C & 50 % R.H HVAC Systems, AHU Control &
Troubles1hooting
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HVAC System ComponentsWhere’s the fresh air duct ?!?!!
HVAC Systems, AHU Control & Troubles1hooting
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HVAC System Components2. Cooling Tower
HVAC Systems, AHU Control & Troubles1hooting
Chiller Refrigerant Cycle
Condenser
Compressor
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HVAC System Components4. Air Handling Unit (AHU)
HVAC Systems, AHU Control & Troubles1hooting
Supply Duct Fan Vibration Connection
Cooling Coil
Filter Sectio
n
Return Duct
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AHU Control & Troubleshooting
Control Concept 1. Sensor 2. Controller Device (Brain)3. Actuator
HVAC Systems, AHU Control & Troubles1hooting
Sensor
Controller
Actuator
Input
Output
Set Point (Value)
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AHU Control & Troubleshooting
HVAC Systems, AHU Control & Troubles1hooting
Sensor
Controller
Actuator
Input
Output
1- Thermostat2- Pressure Gauge3- R.H % Sensor4- DPS5- Flow Switch
BMSDDCMCC
1- Motorized Damper2- Two-way Valve3- Three-way Valve4- VSD