Btech Aktu HVAC Systems (KME-072) Syllabus

Discover the AKTU B.Tech HVAC Systems syllabus, which delves into the principles of heating, ventilation, and air conditioning. Discover the art of keeping indoor settings comfortable and energy-efficient.

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UNIT-1:ADVANCED VAPOUR COMPRESSION CYCLES

• Advanced Vapour Compression Cycles: Review of vapour compression cycle,
• Effect of superheating,
• Subcooling,
• Condenser pressure and evaporator pressure on COP,
• Transcritical cycle,
• Ejector refrigeration cycle.
• Presentation of cycle on P-h and T-s chart. 

• Refrigerants: Classification of Refrigerants,
• CFC, HFC, HCFC, Azeotropic, Zeotropic,
• Natural refrigerant,
• Secondary Refrigerant,
• Anti-freeze solution,
• Phase Changing Materials.
• Desired properties of refrigerants,
• Requirements for refrigerant,
• Classification based on safety,
• Refrigerant oils and applications,
• Properties and uses of commonly used refrigerant,
• Greenhouse effect,
• Global warming,
• Future Refrigerants like Hydrofluoro-Olefines. 

UNIT-2: REVIEW OF PSYCHROMETRY

• Review of Psychrometry: Psychrometric properties,
• Psychrometric chart and Psychrometric processes,
• Psychrometric process in Air conditioning equipment By pass factor,
• Cooling and dehumidifying coils,
• Apparatus dew point (ADP),
• Heating coils,
• Air washer,
• Use of hygroscopic solution in Air Washer,
• Adiabatic dehumidifier,
• Water injection, stream injection, Summer Air conditioning, Winter Air conditioning,
• Sensible heat factor (SHF),
• Grand Sensible heat factor (GSHF). 

• Design Condition: Choice of inside design condition- cold storage,
• Industrial air conditioning,
• Comfort air conditioning,
• Human comfort,
• Outside design condition. 

UNIT-3: HEAT PUMP & VENTILATION

• HeatPump: Introduction,
• Package heat pump with reversible cycle,
• Decentralized heat pump,
• Heat pump with a double bundle condenser,
• Industrial heat pump. 

• Ventilation: Introduction,
• Purpose of ventilation,
• Natural ventilation,
• Mechanical ventilation, tunnels ventilation, mine ventilation, Natural ventilation, and mechanical ventilation. 

• Air Conditioning system: Introduction, Unitary system,
• Central air conditioning system,
• Directs expansion system,
• All water system, all air system, air water system. 

UNIT-4: LOAD CALCULATION

• Solar radiation,
• Heatgain through glass
• Calculation of solar heat gain through ordinary glass tables-shading devices
• Effect of shading devices.
• Fabric heat gain,
• Over all heat transfer coefficient,
• Periodic heat transfer through walls and roofs.
• Empirical methods to calculate heat transfer through walls and roofs using decrement factor and time lag method.
• Infiltration -stack effect, wind effect, infiltration load.
• Internal heat loads,
• System heat gains,
• Break-up of ventilation and effective sensible heat factor,
• Cooling and heating load estimation,
• Psychrometric calculation for cooling,
• Selection of air conditioning apparatus,
• Evaporative cooling,
• Building requirements and energy conservation in air conditioning buildings. 

UNIT-5: AIR DISTRIBUTION

• Air Distribution: Room air distribution
• Types of supply air outlets,
• Mechanism of flow through outlets,
• Selection and location of outlets,
• Distribution patterns of outlets – ducts
• Definition and types
• Materials for ducts and its specification,
• Friction loss in ducts – grills, diffusers, registers,
• Rectangular equivalent of circular duct.
• Air duct designs, duct construction, duct design procedures.
• Equal friction method,
• Static regain method,
• Velocity reduction method.
• Air Conditioning Apparatus: Fans and blowers,
• Types of fans, fan characteristic, centrifugal fans, axial fans, fan arrangements, Suction Line, Discharge Line (Hot-Gas Line), Liquid Line, location and arrangement of piping, vibration and noise in piping, basic elements of the control system.

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