 H.V.A.C (Heating, Ventilation & Air Conditioning)
Designing on software based Calculation.
Duration: 2 Months Class: 02hrs daily.
GENERAL INTRODUCTION AND APPLICATION OF AIR CONDITIONINGS SYSTEMS
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Definition of air conditioning as per (ASHRAE) |
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Terms used in air conditioning and their definitions |
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Basic parts of air conditioning and refrigeration machines |
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Basic cycle and description of component of cycle. |
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Reading Psychometric charts |
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Software based calculations such as Zamil, E-20, |
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ASHRAE, TRANE, DUBAI, HEAT, LOAD, ElITE, CARRIER |
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TYPES OF AIR CONDITIONINGS SYTEMS
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1) Window A/c 2) Split A/c 3) Package A/c 4) Central A/c |
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HVAC — Year round A/c (Air cooled chillers and water cooled chillers)
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INTROCUCTION TO HEAT LOAD CALCULATIONS
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Modes of Heat Transfer. |
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Sources of Heat in Buildings.
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Calculation of co-efficient of heat transfer of various material such as Wall, Roof, Partition, Floor, Glass, Ceiling etc
with the help of annexure
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Calculation of temperature difference of Wall / Glass/
Roof / Partition etc.
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Filling of E-20 forms for heat load estimation using ASHRAE standard.
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Reading the civil drawing
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Project completion (Residential or commercial building)
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SELECTION OF FAN COIL UNIT (FCU’S)
NOTE: - All machines are to be selected based on heat load calculations.
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Definition of fan coin units (FCU’s)
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Nomenclature of Fan coin units (FCU’s)
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Data required for the selection of (FCU’s)
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Location of (FCU’s)
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SELECTION OF AIR HANDLING UNITS (AHU’S)
NOTE: All machines are to be selected based on Heat Load Calculations
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a) Air handling unit - Definition
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b) Types of AHU’s (Horizontal / Vertical)
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c) Difference between FCU and AHU
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d) Ventilation standards of Residential, Commercial, Hospital, Industrial Buildings
with respect to duct sizing methods ASHRAE Stds.
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e) Selection of AHU’S
Data Required for the selection of air handling unit (AHU’s).
Location of (AHU’s)
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SELECTION OF CHILLER’S
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a) Definition of Chiller’s and purpose.
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b) Types of Chiller’s (Air Cooled Chiller’s & Water cooled chiller’s)
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c) Selection of Chiller’s
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d) Data required for the selection of Chiller’s
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e) Location of Chiller’s
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ASSIGNEMENT:
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Preparation of Civil Drawings
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Location of machines on drawings.
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Location of chiller’s on Roof Top.
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PIPE SIZING AND PUMP SELECTION
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a) Selection Drawings @ pump room
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b) Selection Drawings @ chiller’s
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c) introduction to various fittings associated with pump Chiller’s, (AHU’s), (FCU’s)
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d) Pipe sizing @ Roof, Floor, Risers, Pipe Materials
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e) Pump head calculations
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DUCT SIZING
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Duct definition and purpose
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Shape of the duct (Round / Rectangular)
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• Velocity Method
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• Equal Friction Method
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• Static Regain Method
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a) Aspect ratio (Width & Height)
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b) Duct sizing using DUCTULATOR / CHARTS / TABLES / SOFTWARES
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c) SINGLE LINE DIAGRAM PREPARATION
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COST ESTIMATION METHOD
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a) Cost of the Machines
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b) Cost of the Chiller’s
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c) Cost of the Pipe’s
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d) Cost of the Duct (GI * SHEETS) etc.
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