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Air Conditioning Systems

Cooling Loads

- Air infiltration rate into room (CFM)
- Average outside temperature on design day
- Cooling load for roof, wall or glass when Corrected Cooling Load Temperature Difference is given
- Cooling load from lighting
- Cooling load Heat Gain through windows
- Corrected Cooling Load Temperature Difference when Cooling Load Temperature Difference is given
- Duct Heat Gain
- Heat gain through partition, floor, or ceiling
- Latent cooling load for ventilation air
- Latent Heat Gain from people
- Latent Heat Gain per person when Latent Heat Gain from people is given
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Air Refrigeration Cycles

- Energy Performance Ratio of Heat Pump
- Relative Coefficient of Performance
- Theoretical Coefficient of Performance of refrigerator

Bell-Coleman Cycle or Reversed Brayton or Joule Cycle

- Compression or Expansion Ratio
- COP of Bell-Coleman Cycle for given Compression ratio and adiabatic index(γ)
- COP of Bell-Coleman Cycle for given temperatures, polytropic index(n) and adiabatic index(γ)
- Heat Absorbed during Constant pressure Expansion Process
- Heat Rejected during Constant pressure Cooling Process

Air Refrigeration Systems

Simple Air Cooling System

- C.O.P. of air cycle for given power input and tonnage of refrigeration
- C.O.P. of simple air cycle
- Compression Work
- Expansion Work
- Heat rejected during the cooling process
- Mass of air to produce Q tonnes of refrigeration
- Power required for the refrigeration system
- Power required to maintain pressure inside the cabin(excluding ram work)
- Power required to maintain pressure inside the cabin(including ram work)
- Refrigeration Effect Produced
- Temperature ratio at the start and end of ramming process
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Basics

- Entropy change (Isobaric Process) (With given temperatures)
- Entropy change (Isobaric Process) (With given volumes)
- Entropy change (Isochoric Process) (With given pressures)
- Entropy change (Isochoric Process) (With given temperatures)
- Entropy change (Isothermal Process) (With given volumes)
- Heat Transfer at Constant Pressure
- Isobaric Work (for given mass and temperatures)
- Isobaric Work (for given pressure and volumes)
- Mass Flow Rate in Steady Flow
- Specific Heat Capacity at Constant Pressure
- Work done in adiabatic process when Adiabatic Index is Given
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Simple Vapour Compression Refrigeration Systems

Theoretical Vapour compression cycle with Dry Saturated vapour after compression

- Coefficient of Performance (for given h4)
- Coefficient of Performance (for given hf3)
- Enthalpy at point 1 if Liquid enthalpy at point 1 is given
- Enthalpy at point 2
- Enthalpy at point 4 if Liquid enthalpy at point 4 is given
- Entropy at point 1
- Entropy at point 2
- Refrigerating Effect(for given h1 and h4)
- Refrigerating Effect(for given h1 and hf3)
- Work done during isentropic compression(per Kg of refrigerant)

Theoretical Vapour compression cycle with Superheated vapour after compression

- Coefficient of Performance (for given h4)
- Coefficient of Performance (for given hf3)
- Enthalpy at point 1 if Liquid enthalpy at point 1 is given
- Enthalpy at point 2
- Enthalpy at point 4 if Liquid enthalpy at point 4 is given
- Entropy at point 1
- Entropy at point 2
- Refrigerating Effect(for given h1 and h4)
- Refrigerating Effect(for given h1 and hf3)

Theoretical Vapour compression cycle with Superheated vapour before compression

- Coefficient of Performance (for given h4)
- Coefficient of Performance (for given hf3)
- Enthalpy at point 1 if Liquid enthalpy at point 1 is given
- Enthalpy at point 2
- Enthalpy at point 4 if Liquid enthalpy at point 4 is given
- Entropy at point 1
- Entropy at point 2
- Refrigerating Effect(for given h1 and h4)
- Refrigerating Effect(for given h1 and hf3)

Theoretical Vapour compression cycle with Under-cooling or sub-cooling if refrigerant

- Coefficient of Performance (for given h4)
- Coefficient of Performance (for given hf3)
- Enthalpy at point 1 if Liquid enthalpy at point 1 is given
- Enthalpy at point 2
- Enthalpy at point 4 if Liquid enthalpy at point 4 is given
- Entropy at point 1
- Entropy at point 2
- Refrigerating Effect(for given h1 and h4)
- Refrigerating Effect(for given h1 and hf3)

Theoretical Vapour compression cycle with Wet vapour after compression

- Coefficient of Performance (for given h4)
- Coefficient of Performance (for given hf3)
- Enthalpy at point 1 if Liquid enthalpy at point 1 is given
- Enthalpy at point 2
- Enthalpy at point 4 if Liquid enthalpy at point 4 is given
- Entropy at point 1
- Entropy at point 2
- Refrigerating Effect(for given h1 and h4)
- Refrigerating Effect(for given h1 and hf3)

Refrigeration and Air Conditioning calculators give you a list of online Refrigeration and Air Conditioning calculators. A tool perform calculations on the concepts and applications for Refrigeration and Air Conditioning calculations.

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