Solar Thermal and Wind
November 2009
Passive Solar
The Zion National Park Visitor Center incorporates passive
solar design features, including clerestory windows for
daylighting
y g
g and Trombe walls that absorb heat during
g the day
y
and give off heat at night.
Solar Thermal in CNY
• More efficient use of solar radiation than
Photovoltaic systems
– It takes 4 times the area (sq ft) of PV to collect
the same amount of energy as solar thermal.
– But,
But the PV systems produce electricity and
the solar thermal system produces hot water.
• Given our solar resources the best fit for
solar thermal is hot water heating, or other
year round thermal needs
needs.
Evacuated Tube
Solar Collector
Flat Plate
Solar Collector
Example Thermal Panel Comparison
Cost:
Flat Plate 27 BTU/$
EV Tube 14 BTU/$
176 (F)
Wind
Í 7 MW
5 kW Î
A 10% increase
In wind speed
Heiberg wind
Site average
wind speed
Produces a
37% increase
In energy output
Vertical Axis Wind Turbines – Buyer beware!
Heiberg wind site!