Solar Energy a presentation by Sebastian Dumbs

9/27/2016Dumbs Sebastian2 Table Of Contents What is solar energy? Share in world energy production from renweable sources Applications of solar technology Economics

9/27/2016Dumbs Sebastian3 What Is Solar Energy? Solar energy refers primarily to the use of solar radiation for practical ends,and not only to the commonly known Photovoltaic Cells. There are passive and active types of Solar technology.

9/27/2016Dumbs Sebastian4 Types Of Solar Energy Passive materials with favorable thermal properties, designing spaces that naturally circulate air, and referencing the position of a building to the Sun Active use photovoltaic panels, pumps, and fans to convert sunlight into useful outputs

9/27/2016Dumbs Sebastian5 Share In World Energy Production (only renewable sources)

9/27/2016Dumbs Sebastian6 Applications Of Solar Technology There are many ways to harness the power of the sun Solar lighting (passive/active) Solar water heating (passive) Photovoltaic energy (active) Concentrating solar power (passive) Solar updraft towers (active)

9/27/2016Dumbs Sebastian7 Solar Lighting Solar lighting is an either active or passive solar method of providing interior light. It collects sunlight using focusing mirrors that track the Sun and use optical fibers to transmit it inside the building to supplement conventional lighting. These systems are able to transmit 50% of the sunlight received

9/27/2016Dumbs Sebastian8 Solar Water Heating Solar hot water systems use sunlight to heat water. The most common types of solar water heaters are glazed flat plate collectors (34%) generally used for domestic hot water; and unglazed plastic collectors (21%) used mainly to heat swimming pools.

9/27/2016Dumbs Sebastian9 Photovoltaic Energy A photovoltaic cell, or solar cell, is a device that converts light into direct current using the photoelectric effect. The first solar cell was constructed by Charles Fritts in the 1880s. Nowadays the best Solar Panels have an efficiency of 2$ per Watt Coal (installation included) costs $2.10/watt

9/27/2016Dumbs Sebastian10 Concentrating Solar Power Concentrating Solar Power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. The concentrated light is then used as a heat source for a conventional power plant.

9/27/2016Dumbs Sebastian11 Solar Updraft Towers A solar updraft tower consists of a large greenhouse that funnels into a central tower. As sunlight shines on the greenhouse, the air inside is heated, and expands. The expanding air flows toward the central tower, where a turbine converts the air flow into electricity.

9/27/2016Dumbs Sebastian12 Economics Solar installations in recent years have also largely begun to expand into residential areas, with governments offering programs to make "green" energy a more economically viable option. Daniel Lincot, chairman of the 2008 Photovoltaic Solar Energy Conference said that photovoltaics alone could cover all the world's energy demand. Photovoltaics are 85 times as efficient as growing corn for ethanol.

9/27/2016Dumbs Sebastian13 The End Thank you for you attention