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Course Content- HVAC Design & Drafting

Course Content- HVAC Design & Drafting

4 months Certificate Course in HVAC Design & Drafting

(Heating Ventilation & Air-Conditioning)

As per ASHRAE and ISHRAE Standards

Introduce to HVAC

Fundamentals
Modes of Heat Transfer
Sensible Heat and Latent Heat
Working of Ductable Split A/C with Line Diagrams
Modes of Heat Transfer

Basic Components of Air-Conditioning and Refrigeration machines.

  • Basic Refrigeration System or Vapour 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 Chilled 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

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

Finding ‘U’ Factor

  • Wall
  • Glass
  • Roof
  • Partition

Finding Ventilation requirement for IAQ

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

Air Conditioning Concepts

Fire Protection (Awareness)

HVAC software’s

  • XL sheet for Load Calculations
  • Duct sizer for Duct sizing
  • Trox CAD Base for Diffuser & Grilles
  • Pipe sizer for Pipe sizing
  • Psychrometry Software

And many more………..

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