HVAC Design and Drafting

Course content:

As per ASHRAE and ISHRAE Standards and Codes

1.       Prelude to HVAC

·         Fundamentals

·         Modes of Heat Transfer

·         Sensible Heat and Latent Heat

2.       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

3.       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

4.       Categories of Air Conditioning

·         All air system

·         All water system

·         Air - water system

·         Direct Refrigerant system

5.       Study of Psychometric 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

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6.       Load Calculations

·         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

7.       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

8.       Static Pressure Calculation

·         Selection of Motor HP

·         Selection Fan/Blower RPM

9.       Hydronic System

Course Fee