Typical Air-Conditioning Process
Typical Air-Conditioning processes are:
• Sensible Heating / Cooling
• Cooling and dehumidification
• Heating and humidification
• Adiabatic Humidification
• Adiabatic Mixing of Air
Governing equations:
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STATE is a point, and PROCESS (sequence of states) is a line on the Chart. Process may involve:
• Sensible Heat (change TDb, constant W)
• Latent Heat (constant TDb, change W)
• Both
2.3.1 Sensible heating and cooling
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Wx
Ti
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On the psychrometric chart |
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Cooling |
Determine the energy (heat flux) required for sensible heating of air at 15°C and 50% RH to 32°C. Also find fa.
Given: State 1: 15°C, RH=50%, State 2: 32°C Find: q, fa
Solution:
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Heat Flux:
Relative humidity:
From the psychrometric chart (the process is a horizontal line): Heat flux is Relative humidity:
How to check iffFis constant, i. e. no latent heat?
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Posted in Fundamentals of Heating. Ventilating, and Air-Conditioning |