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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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  • 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. 


  • 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. 


  • 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. 


  • 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. 


  • 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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