Post on 10-Mar-2018
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
ME 462/562: Sustainable Energy – an Exergy Analysis Spring 2014
Psychrometric processes
Psychrometric processes 2/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
Why worry about evap cooling? 1
Psychrometric processes 3/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
Why worry about evap cooling? 2
Psychrometric processes 4/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
The psychrometric chart
Psychrometric processes 5/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
Sensible heating / cooling
cooling heating
1 22
Psychrometric processes 6/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
Heating with humidification
heating
1
2
+ water
3
Psychrometric processes 7/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
cooling with dehumidification
cooling
1
x
- water
2
Psychrometric processes 8/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
Adiabatic (evaporative) cooling
`
1
+ water2
Psychrometric processes 9/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
Adiabatic mixing
` 1
3
2
Psychrometric processes 10/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
Efficiencies for simple heating
Psychrometric processes 11/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
Efficiencies for heat & humidification
Psychrometric processes 12/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
Efficiency for evaporative cooling
Psychrometric processes 13/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
An adsorption chiller
Psychrometric processes 14/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
The experimental setup
Psychrometric processes 15/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
Process temperatures30.2/16.7
30.5/19.743.5/2117.3/16.7
26.7/19.820.4/19.8
33.7/23.860.8/30.1
49.8/29.4
DRY BULB / WET BULB
Psychrometric processes 16/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
Performance - energy
4
Psychrometric processes 17/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
Performance - exergy
Psychrometric processes 18/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
direct vs. indirect evap cooling
Psychrometric processes 19/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
can we do better?
Psychrometric processes 20/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
and even better?
Psychrometric processes 21/21
Mechanical EngineeringME462/562 Sustainable Energy:
an Exergy Analysis
the real thing
a “coolerado” air conditioner