Transcript Presentation1 - Eilat Eilot Renewable Energy

Water-recycling
desert cooler
Air ventilation and cooling
Nadav Arad
Ruslan Moger
José Rocha
Jana Wolf
Desert Cooler
Thermal comfort diagram
Temp.
in °C
Comfort zone (with air
circulation)
Relative Humidity in %
PROBLEM
How can we reduce the amount of
water consumed by the desert cooler?
Peltier Effect
Dry air out
Table 1: Table showing the energy consumed by two different cooling system
in 12 months in a 150 m² building
Cooling System
Energy consumption
[kWh]
Air Conditioning
6,000
Desert Cooler
1,500
Table 2: Table showing the volume of water used for two evaporative cooling
systems per hour.
Cooling System
Water Consumption
[L/hr]
Regular desert cooler
26.5 - 40
Our design (10 plates)
5 to 10 liters less
Table 3: Table showing the energy consumption of pletier system as compared
to regular AC system
Cooling System
Energy Consumption
[kWh]
Regular air conditioning*
6,000
Our design (10 plates)**
1,200
* Using electrical energy
**Using solar energy
Table 4: Table showing the cost of implementation of two different cooling
systems for a fully conditioned houses (150m2)
Cooling System
Cost
[US dollars]
Air Conditioning
3,500 – 4,000
Desert Cooler
600 – 1,000
?
Advantages
Disadvantages
Save energy
No user-driven
regulation
Save water
Maintenance
Heat lost from the peltier system?
What is the rate of the condensation of water?
To what extent can the water be re-circulated?
CONCLUSION
Ventilation cannot be separated from conditioning
Air conditioning accounts for high power consumption and, therefore, money
spending
Energy efficiency can be achieved by reducing AC usage
Desert coolers provide with an alternative to such systems
Water loss issue associated to desert coolers can be adressed by platier
thermoelectric technology
However, further research is requeried on the subject.
References
"Evaporative Cooling." Evaporative Cooling. N.p., n.d. Web. 04 Mar.
2013http://www.consumerenergycenter.org/home/heating_cooling/evaporative.html
"Swamp Cooler Water and Energy Use." Swamp Cooler Water and Energy Use. N.p., n.d.
Web. 04 Mar. 2013. <http://www.alloutcool.com/swamp-cooler-water-energy-use.html>.
"Swamp Cooler Sizing." Swamp Cooler Sizing. N.p., n.d. Web. 05 Mar. 2013.
<http://www.alloutcool.com/swamp-cooler-sizing.html>.
Martin K. "Evaporative Cooler Water Use." University of Arizona, July 1991. Web. 04 Mar.
2013.
"Evaporative Air Conditioners and Water Use." Northern Territory Government, n.d. Web. 04
Mar. 2013.
"Technical Information for Cooling Towers Using Recycled Water." San Diego Country Water
Authority, n.d. Web. 04 Mar. 2013.
Atta, Raghied M. "Solar Water Condensation Using Thermoelectric Coolers." Department of
Electrical Engineering. Taibah Universitz, 2011. Web.