Introduction to HVAC

• Scope of HVAC Industry with overview of Consulting & Construction industry
• Concepts of Air conditioning systems
• Principles of air conditioning
• Refrigerant cycle
• Chilling system
• Cooling
• Heating
• Humidification Methods
• Dehumidification Methods
• Filtration
• Air-conditioning systems
• Local cooling comfort System
• Window Air conditioning
• Split Air conditioning
• VRV- Air conditioning
• Chilled water Fan coil unit
• Central Air Conditioning System
• Chilled water system
• Psychometric chart
• Properties of Air (DBT, %RH, WBT, , DPT, ENTHALPY.)
• Refrigerant
• Types of Refrigerant
• Evaporating & Condensing properties of refrigerant
• Refrigerant Pipe sizing methods

Heat Load Estimation

• Basics of Heat transfer in a building envelop
• Understanding of Outdoor & Indoor Conditions
• Correction to Outdoor temperature & Indoor temperature requirements
• Exposure of Wall, Latitude of Location, Yearly Range, Daily Range etc
• Factors effecting the loads estimate
• Sources of Heat Gain
• External- Sun Gain through Glass/Window, SunGain through Roof/Wall, Partition gain
• Internal - People, Lights, Electrical Equipments, Motors, Kitchen Appliances, Heat gain through Infiltration air, Heat gain thorough Ventilation & By-pass air, Heat gain through ducts. Calculating RSH, RLH,OASH,OALH, GTH, ESHF, ADP, Dehumidified CFM
• Heat loss calculations
• Basics of Heat loss in a building envelop
• Sources of Heat loss
• Heat loss through Glass/window, Heat loss through Roof/Wall
• Heat loss through Partition Glass/wall/Floor/slab
• Heat loss through Infiltration air/Ventilation air & Bypass air
• Heat loss through slab on Grade

Design of Air Distribution System

• Components of Air distribution system
• Types of Ducts, Duct Fittings, Dampers, Types of Diffusers, Return Air Grill, Flexible Duct, Flexible Connector, End Cap, Sound Attenuator etc
• Duct Elbows selections (Long radius, Short radius-No throat, Throat elbows, with heel radius, throat radius & radius of elbow)
• Vanes location & number of vanes required
• Duct Material Calculation- GI sheet, Total sheet required in kgs. Gauge of duct & Thickness of Gauge. Hanger Spacing, Hanger Rod Diameter and Angle support Size
• Duct designing methods
• Fixed Velocity method
• Equal friction Method
• Static regain method
• Fan selection
• Static pressure calculation
• Supply & Return Duct configuration, Assigning Velocity of Air (FPM) to each Section of Supply and Return Duct
• Low Velocity system
• Medium Velocity System
• High Velocity System
• Components of Air Distribution (Duct) System, Supply and Return Duct configurations (Extended Plenum Systems, Radial System, Trunk and Branch system)
• Stair Well Pressurization System Designing Design of Ventilation system.
• Introduction to Ventilation system
• Types Of Ventilation
• Components of Ventilation system
• Restaurant Kitchen Ventilation
• Residence Kitchen Ventilation
• Basement parking Ventilation
• Basement Ventilation In case of Fire
• DG ,GG & GT Exhaust Seytem

Chilled Water system design

• Introduction to Chilled water system, Hot watersystem
• Classification of chillers
• As per Evaporator
• As per Condenser
• As per compressor
• Chiller arrangements, Cooling tower arrangement, Types of cooling tower & Expansion tank connections
• Pumps required in Chilled water system
• Production Pumps
• Distribution Pumps
• Pump Classifications
• Chilled water system pipe designing
• Pipe designators, Piping standards
• Piping fittings and Components
• Valves used in Chilled water system
• Chilled water and Hot water GPM calculation
• Calculation of Water Velocity FPS on Suction and Discharge side of Pump
• District Cooling System
• Friction loss calculation for the piping system
• Friction Loss in Straight Pipes
• Friction Loss in Straight Pipes
• Friction Loss in Fittings
• Valves used in Chilled Water System
• Friction Loss in Valves & Special components
• Calculating TDH for Pump (Open Piping System and Closed Piping System)
• Pipe Sizing Manual Method Hazen-Williams Equation for Calculating Friction Loss
• Pump Cavitations & NPSH Calculation for Pump

Equipment Selection

• AHU&FCU classification and selection
• Package Unit Selection DX- Chiller Selection
• Condenser Selection (Air cooled, Water Cooled, Evaporative)
• Cooling Tower Selection Mixed Air Temperature HRF for Open and Closed Compressor
• Expansion Tank Selection

Erection of Equipments

• Detailing& Installation of Chillers
• Detailing& Installation of Air handling units<l/i>
• Detailing& Installation of Package units
• Detailing& Installation of Fan coil units
• Detailing& Installation of Condensing units

Estimation of Project

• Understanding the tendering requirements
• Take Off Sheet
• Preparing Inquiry for Suppliers
• Preparing Rate of Analysis
• Finalizing the suppliers
• Final Billing & Quotations finalization

Documents Approvals

• Preparation of Material submittals
• Shop drawing submittals
• Approval Drawings
• Tender Drawings
• Working Drawings
• Co-ordination Drawings
• As Built Drawings
• Preparation of BOQ and design documents
• Technical Specifications

Project Procurement works

• Identifying the critical equipments
• Preparation of purchase orders
• Letter of Intent
• Letter of credit
• Minutes of meeting

Drafting of HVAC Systems

• Introduction to Drafting
• Types of Drawings used in the industry
• Study & Preparation of Floor Drawings
• Roof Drawings
• Sectional Drawings
• Builders Work Drawings
• Co-ordination Drawings &Riser Diagram
• Abbreviations & Symbols used