MECH4880 Week 2 Unit 3.pdf - MECH 4880 Applied...

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MECH 4880 Applied Psychrometrics & Air Conditioning Unit 3 Chris Menictas School of Mechanical and Manufacturing Engineering
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Contents Psychrometric Processes Sensible Heating and Cooling Latent Heat Process: Humidification and Dehumidification Adiabatic Saturation Process Adiabatic Mixing Process Total Heating or Cooling Process Sensible Heat Factor, [SHF] Room Load Line Cooling Coil Process in the Coil Apparatus Dew Point Coil Contact Factor or By-Pass Factor Applications
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Psychrometric Processes Sensible Heating and Cooling A sensible process is one where the state of moist air is altered along a constant moisture content line t 1 1 w t 2 cooling heating t 2 Sensible cooling and heating
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Psychrometric Processes Sensible Heating and Cooling A sensible process is one where the state of moist air is altered along a constant moisture content line t 1 1 w t 2 cooling heating t 2 Heating decrease in RH Cooling increase in RH Looking at the chart what happens to the relative humidity as you heat or cool sensibly? Note: Cannot cool sensibly below t DP why? Condensation removes water Sensible cooling and heating
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