HVAC

Preface to HVAC- Heating Ventilation and Air Conditioning

• Fundamentals

• Modes of Heat Transfer

• Sensible Heat and Latent Heat

Basic Components of Air-Conditioning and Refrigeration machines

• Basic Refrigeration System or Vapor Compression Cycle

• Pressure – Enthalpy Chart

• Function & Types of Compressor

• Function & Types of Condenser

• Function & Types of Expansion Valve

• Function & Types of Evaporator

• Accessories used in the System

• Refrigerant and Brines

Classification of Air-Conditioning System

• Window A/C

• Working of Window A/C with Line Diagrams

• Split A/C

• Types of Split A/C

• Working of Split A/C with Line Diagrams

• Ductable Split A/C

• Working of Ductable Split A/C with Line Diagrams

• Variable Refrigerant Volume (VRV)/ Variable Refrigerant Flow (VRF)

• Ductable Package A/C

• Working of Ductable Package A/C with Line Diagrams

• Package Roof Top Units

• Central Plant Chill Water System

Categories of Air Conditioning

• All air system

• All water system

• Air – water system

• Direct Refrigerant system

Study of Psychrometric Charts

• Dry Bulb Temperature

• Wet Bulb Temperature

• Dew Point Temperature

• Relative Humidity

• Humidity Ratio

Psychrometric Processes

• Heating

• Cooling

• Cooling and Dehumidification

• Heating and Humidification

• Finding Values Using the Chart

Load Calculation

• Survey of Building

• Cooling Load Steps

• Finding Temperature difference (ΔT)

• Wall

• Glass

• Roof

• Partition

• Load Calculations (Manually using E-20 form)

• ESHF, ADP & Air Flow Rate (CFM) Calculation

Air Distribution System

• Duct-Definition & Terminology

• Duct Design consideration

• Duct sizing methods

• Duct sizing as per Aspect Ratio

• Finding Duct size using Ductulator

• Calculation of Number of sheets for Duct

• Gauge selection for Sheet Metal

• Bill of Materials for Duct Network

• Legends and Symbols used in the HVAC Industry

• Selection of Diffusers and Grilles

• Duct Materials and Insulation materials used in HVAC Industry

• Study of Overseas Drawings

• Duct Routing – Preparation of single line diagram (SLD)

• Preparation of Layouts (Double line Diagram – DLD) as per SMACNA rules

• Openings for Ducts passing through Wall

• Sectional drawing @ Duct supports

• Concept of CAV & VAV

Static Pressure Calculation

• Selection of Motor HP

• Selection Fan/Blower RPM

Hydronic System

• Classification of Water Piping

• Pipe sizing for chill water system

• Fittings used in the HVAC Piping System

• Valves used in the HVAC Piping System

• Function of Valves

• Openings for CHW Pipes passing through Wall

• Sectional drawing @ CHW Pipe supports

• Pump Head Calculation

• Selection of Pump

HVAC software’s

• XL sheet for Load Calculations

• Duct sizer for Duct sizing

• Psychrometry Software

Course Duration: – 45 days

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