Solar energy is received from the suns light rays hitting the earth and is commonly referred to as solar radiation u. A toaster is a good benchmark for power typically at the. Peter gevorkians solar power in building designis the third book in a sequence of comprehensive surveys in the. Germany has approximately 10% fewer annual hours of sunlight than seattle and most of the country is actually north of the puget sound s latitudes, yet over half of the worlds solar energy is being generated there. At present we still depend a lot on fossil fuels and other kinds of nonrenewable energy. This energy fills the solar system, bathing the earths atmosphere with a near. The cost of solar energy is also high compared to nonrenewable utilitysupplied electricity. Solar energy refers to energy that comes from the sun and has been used by humans for a long time for things like heating, cooking food, removing salt from seawater and things like drying clothes. Solar energy engineering processes and systems second edition. Solar cooking does not require any electricity but uses solar thermal energy to cook the food.
The capacity of concentrating solar power is nearly 7,000 gw in seven southwestern states. When the amount of energy generated by a gridconnected pv system exceeds the customers loads, excess energy is exported to the utility, turning the customers electric meter backward. Thus in brief, an energy efficient building balances all aspects of energy use in a building. Landbased wind, the most readily available for development, totals more than 8000 gw of potential capacity. I hope we dont have to wait til oil and coal run out before we tackle that. Photovoltaic cells are those which convert sun light energy into electricity. There are two main types of solar power systems, namely, solar thermal systems that trap heat to warm up. The extensive use of renewable energy including solar energy needs more time for technology development. Texas wind energy policy 2007 texas wind energy policy 2010 tidal and wave energy. As the world looks for new energy sources, solar energy is becoming far more important. Because the intensity of solar radiation at earths surface is so low, these collectors must be large in area. Conversely, the customer can draw needed power from the utility when energy from the pv system is insufficient to power the buildings loads. Solar constant the energy density of solar radiation at earths distance from the sun 150,000,000 kilometers averages 61 joules per second per square meter.
Energy produced through the sunlight is called solar energy. It is available directly as solar isolation and indirectly as wind energy. Information notes the building of the solar cookers could take up to half a day. Photovoltaic solar energy systems the solar resource. Solar radiation can be harnessed and converted to electricity by photovoltaic pv technologies. Use of materials with low embodied energy also form a major component in energy.
An introduction to energy an introduction to energy powerpoint ppt presentation free to view. In chapter 21, which is the last chapter of the regular text, we discuss solar fuels, which allow to store solar energy on the long term in the form of chemical energy. Power is the rate at which the energy is converted dedt. Endorsements for solar power in building design dr. This energy is in the form of solar radiation, which makes the production of solar electricity, light, heat water and many more things possible. Here are some of the lecture notes presented in the class. The power production from three different solar panel mountings, fixed, tracking, and adjustable, will depend on several identified factors, namely.
Energy storagebatteriesfuel cells hydrogen economy. Though a variety of technologies have been developed to take advantage of solar energy in recent years, solar power accounts for less than one percent of electricity use in. This volume of training manual for engineers on solar pv system consist of technical details required for feasibility study, designing and implementation of. This can be achieved by passive solar design elements such as shading, implementing large southfacing windows, and building materials that absorb and slowly release the suns heat. Alternative methods of solar energy are discussed in part v. Solar energy notes sunwind solar car kits and solar. Get pdf sample copy of waste to energy market report. Pdf solar energy engineering processes and systems. An overview of solar cell technology mike mcgehee materials science and engineering global climate and energy projectglobal climate and energy project center for advanced molecular photovoltaics precourt institute stanford university konarka nanosolar john benner provided the slides with the nrel logo. Search for wildcards or unknown words put a in your word or phrase where you want to leave a placeholder. Using solar panels, solar energy is converted into electrical energy that can power an entire building.
Passive solar techniques include orienting a building to the sun, selecting materials with favorable thermal mass or lightdispersing properties, and designing spaces that naturally circulate air. Passive solar buildings are designed to let the heat into the building during the winter months, and block out the sun during hot summer days. Ppt introduction to solar energy powerpoint presentation. Solar energy 315 diluted form, at a rate of about 220 wm2 see figure 31. Evaluating a building site while the pacific northwest may have good to excellent solar potential, not every building site will be suitable for a solar installation. Download seminar report for solar buildings, abstract, pdf.
A free powerpoint ppt presentation displayed as a flash slide show on id. The challenge of solar energy utilization is to concentrate it. If there is no certification system, ask to see previous energy consumption figures to establish the cost per sq foot employee, as applicable. In chapter 20 we introduce different concepts related to solar thermal energy. Before the industrial revolution, the main source of energy was wood and biomass, which is a secondary form of solar energy. In this section of the web site, students will read about a variety of energy sources including biomass, fossil fuels, geothermal energy, hydroelectricity, nuclear energy, solar energy, tidal energy and wind energy. Its potential is 178 billion mw, which is about 20,000 times the world. The solar energy is the energy obtained by capturing heat and light from the sun. Solar energy notes and links archives sunwind solar car. Energy is one of the most important resources to sustain our lives.
This guide includes examples and models that have been fieldtested in cities and counties around the country. Under this programme, solar photovoltaic cells are exposed to sunlight and in the form of electricity is produced. Search within a range of numbers put between two numbers. In year 19992000, 975 villages were illuminated through solar energy. Energy is the amount of work that can be completed by a force. World energy sources lesson plan jeopardy page 1 of 4. Types of collectors, collection systems, efficiency calculations, applications. A typical solar energy scavenging system represented by the five main circuit system blocks shown. Among the most common devices used to capture solar energy and convert it to thermal energy are flatplate collectors, which are used for solar heating applications. Solar photovoltaic pv systems an overview figure 1. Gg 140 lecture 34 renewable energy open yale courses.
To begin the lesson, have the students become familiar with the present energy sourcesweb pages on the teachnuclear web site. The wall is down and the passive collector is collecting solar energy. An overview of solar cell technology stanford university. The overwhelming majority of solar cells are fabricated from silicon with increasing efficiency and lowering cost as the materials range from amorphous noncrystalline to polycrystalline to. Truefalse the energy from the sun is completely transformed into electrical energy by using a solar panel. Passive solar design involves using specific shapes, angles, and building materials to maximize the amount of solar energy allowed into the interior of a building during cold months. Sunlight reaching earth even though the sun ranks as a runofthemillstar, it releases a huge quantity of energy in terms of human capacityor need. Present status, solar cells, cell technologies, characteristics of pv systems, equivalent circuit, array design, building integrated pv system, its components, sizing and economics. Solar energy technologies use the suns energy to light homes, produce hot water, heat homes and electricity. The solar industry is developing steadily all over the world because of the high demand for energy while major energy source, fossil fuel, is limited and other sources are expensive. The first step in the design of a photovoltaic system is determining if the site you are considering has good solar potential. As a training tool to use in solar design engineers training, a manual has been developed with effort from experts and other concerned.
Solar energy is the most abundant stream of energy. These include wind energy, solar energy, biomass energy and geothermal energy. This is the value of what we call the solar constant, although though there is. In one hour the earth receives more energy from the sun than the world consume in one year. Solar energy industry solar energy is, therefore, expected to receive a fresh pour of investments with all major players bidding to get a taste of the lucrative solar environment in india. Overhangs are used to shield the home from the high, summer sun, but are designed to allow the low, winter sunlight to enter the windows. According to a new report published by allied market research, titled, waste to energy market by technology.
A guide for local governments is a comprehensive resource doe created to assist local governments and stakeholders in designing and implementing a strategic local solar plan. In other words, if one square meter were available for conversion of solar energy to electricity at 100% efficiency, the energy produced would be sufficient for just two or three light bulbs. Solar cell, also called photovoltaic cell, any device that directly converts the energy of light into electrical energy through the photovoltaic effect. Generating electrical energy solar tech satellites heat water solar dryer uses of solar energy 4. Energy from wind is acquired through the use of large wind turbines. In this situation energy conservation ec is the critical needs in any countries. These turbines ideally need to be located in areas where there is strong wind and low atmospheric turbulence. Sun sends out energy in the form of electromagnetic radiation. Fundamental properties of solar cells, principles and. The technical title does little to betray to the reader including the lay reader the wonderful and uniquely entertaining immersion. Solar electric system design, operation and installation. Even in sunny parts of the worlds temperate regions, for instance, a.