태양광발전과 태양열발전의 차이

태양광발전과 태양열발전의 차이

이 저작물은 크리에이티브 커먼즈 저작자표시-비영리-동일조건변경허락 2.0 대한민국 라이선스에 따라 이용할 수 있습니다.

Solar land area

Solar Land Area (클릭하면 커져요.)

Source: http://en.wikipedia.org/wiki/File:Solar_land_area.png

About this map

Solar power is the amount of solar energy that is delivered per second. A value of 250 watts per square metre means every square metre of surface in that region receives 250 watts of solar power (i.e. 250 joules of solar energy per second).

The symbol "Σ• = 18 TWe" means that the total amount of electrical power you would get from all the solar panels covering all the ‘black spot areas' would be 18 TeraWatts.

The values of solar power in the map are average values taken from readings over the period 1991-1993, for 24 hours a day. They take into account the effect of cloud cover over that period.

이 저작물은 크리에이티브 커먼즈 저작자표시-비영리-동일조건변경허락 2.0 대한민국 라이선스에 따라 이용할 수 있습니다.

Breakdown Of The Incoming Solar Energy

Breakdown Of The Incoming Solar Energy

Source : http://en.wikipedia.org/wiki/File:Breakdown_of_the_incoming_solar_energy.jpg

Incoming Solar energy : 174PW(Peta Watt)

Reflected by atmosphere : 10PW

Reflected by clouds : 35PW

Reflected by earth surface : 7PW

Absorbed by atmosphere : 33PW

Radiated space from atmosphere : 111PW

Radiated from earth to space : 10PW

Radiation absorbed by atmosphere : 26PW

Conduction and rising air : 12PW

Latent heat is water vapor : 40PW

Only 89PW absorbed by land and oceans

But earth is consist of about 70% ocean

Absorbed energy's 70% is about 26.7PW.

이 저작물은 크리에이티브 커먼즈 저작자표시-비영리-동일조건변경허락 2.0 대한민국 라이선스에 따라 이용할 수 있습니다.

Solar Panel Alignment

Solar Panel Alignment (클릭하면 커져요.)

Source : http://en.wikipedia.org/wiki/Solar_tracker

이 저작물은 크리에이티브 커먼즈 저작자표시-비영리-동일조건변경허락 2.0 대한민국 라이선스에 따라 이용할 수 있습니다.

Best Research-Cell Efficiencies

Best Research-Cell Efficiencies

Source : http://en.wikipedia.org/wiki/Solar_cell

이 저작물은 크리에이티브 커먼즈 저작자표시-비영리-동일조건변경허락 2.0 대한민국 라이선스에 따라 이용할 수 있습니다.

Helios Prototype

Helios Prototype (클릭하면 커져요.)

Aircraft Specifications

Wingspan:	247 ft
Length:	12 ft
Wing Chord:	8 ft
Wing Thickness:	11.5 in. (12 percent of chord)
Wing area:	1,976 sq. ft.
Aspect Ratio:	30.9 to 1
Empty Weight:	1,322 lb
Gross Weight:	Up to 2,048 lb., varies depending on power availability and mission profile.
Payload:	Up to 726 lb., including ballast, instrumentation, experiments and a supplemental electrical energy system, when developed.
Electrical Power:	62,120 bi-facial solar cells covering upper wing surfaces. Cells are silicon-based, and are about 19 percent efficient in converting solar energy into electrical power. Lithium battery pack backup power to allow limited operation after dark.
Propulsion:	14 brushless direct-current electric motors, each rated at 2 hp. (1.5 kW), driving two-blade, wide-chord, 79-in. diameter laminar-flow propellers designed for high altitude.
Airspeed:	From 19 to 27 mph cruise at low altitudes, up to 170 mph ground speed at extreme altitude.
Altitude:	Designed to operate at up to 100,000 ft., typical endurance mission at 50,000 to 70,000 ft.
Endurance:	With solar power, limited to daylight hours plus up to five hours of flight after dark on storage batteries. When equipped with a supplemental electrical energy system for nighttime flight, from several days to several months.
Primary Materials:	Carbon fiber composite structure, Kevlar®, Styrofoam leading edge, transparent plastic film wing covering. Kevlar and Nomex are registered trademards of E.I. Du Pont De Nemours and Co.

이 저작물은 크리에이티브 커먼즈 저작자표시-비영리-동일조건변경허락 2.0 대한민국 라이선스에 따라 이용할 수 있습니다.