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Junior Solar Sprint was created in the 1980s by the National Renewable Energy Laboratory (NREL) to teach younger children about the importance and challenges of using renewable energy. [3] [4] The project also teaches students how the engineering process is applied, and how solar panels, transmission, and aerodynamics can be used in practice. [3]
Solar energy is the radiant energy from the Sun's light and heat, which can be harnessed using a range of technologies such as solar electricity, solar thermal energy (including solar water heating) and solar architecture.
Exceed current energy efficiency standards by at least 40%. Generate at least 12% electricity on site through solar energy. Use rainwater or re-circulated gray water to reduce potable water use for building sewage conveyance by 80%. Recycle or salvage 50% to 70% of non-hazardous construction debris.
Renewable thermal energy is the technology of gathering thermal energy from a renewable energy source for immediate use or for storage in a thermal battery for later use.. The most popular form of renewable thermal energy is the sun and the solar energy is harvested by solar collectors to heat water, buildings, pools and various processes.
In passive solar building design, windows, walls, and floors are made to collect, store, reflect, and distribute solar energy, in the form of heat in the winter and reject solar heat in the summer. This is called passive solar design because, unlike active solar heating systems, it does not involve the use of mechanical and electrical devices.
The efficiency of the solar cells used in a photovoltaic system, in combination with latitude and climate, determines the annual energy output of the system. For example, a solar panel with 20% efficiency and an area of 1 m 2 produces 200 kWh/yr at Standard Test Conditions if exposed to the Standard Test Condition solar irradiance value of 1000 ...
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Active solar – technologies are employed to convert solar energy into another more useful form of energy (for example, to heat or electrical energy). Heliostat – a device that includes a mirror, usually a plane mirror, which turns so as to keep reflecting sunlight toward a predetermined target, compensating for the Sun's apparent motions in ...