Despite the extremely high temperatures needed at the core of the sun, to sustain its thermonuclear reactions, the sun has a black body temperature of 5770 k. Study material and 14 sources of energy class 10th science. Renewable energy sources notes pdf res notes pdf book starts with the topics the scope of these notes, definition of renewable energy, basic principles, and features, sustainable potential, theoretical generation of mechanical power from wind. Solar energy is tenuous, undependable, and expensive beyond practicality. There are two main types of solar power systems, namely, solar thermal systems that trap heat to warm up.
California leads the united states in solar energy production. It takes an average of eight minutes for energy to travel from the sun to the earth. Role and potential of new and renewable source, the solarenergy option, environmental impact of solar power, physics of the sun, the solar constant, extraterrestrial and. Fossil fuels fossil fuel energy is derived from the stability of the product molecules of combustion co2 and h2o relative to the hydrocarbon and o2. Almost one third of this is reflected back into space. The basic building block of a pv system is the solar cell.
Solar energy is the energy obtained by capturing heat and light from the sun. Here we have given ncert class 10 science notes chapter 14 sources of energy. The suns energy, for all practical purposes, is certainly in exhaustible. Solar energy devices solar heating devices solar cooker. The support to solar energy is one among the different programme components. Before the industrial revolution, the main source of energy was wood and biomass, which is a secondary form of solar energy. I hope we dont have to wait til oil and coal run out before.
The best solar energy input being recorded during high noon and cloudless sky is. Today, it is also used to make electricity where other power supplies are not there, such as in places far away from where people live, and in outer space. We note here that dvdi is the dynamic impedance of the source, and vi the static. It is considered a green technology because it does not emit greenhouse gases. Solar tech elec uses its own super trained engineers for solar power installations. The best solar energy input being recorded during high noon and cloudless sky is around 1,070 watts per square meter. The federal energy regulatory commission expects about 43. Total global annual solar energy potential amounts to 1,575 ej.
Solar energy harvesting energy harvesting is by no means a new idea. Notes of ch 14 sources of energy class 10th science aug, 2017 study material and 14 sources of energy class 10th science. Cbse class 10 science chapter 14 sources of energy current notes in pdf are available for free download in mycbseguide mobile app. Enormous amounts of solar power are coming online in the near future. Solar energy, radiation from the sun capable of producing heat, causing chemical reactions, or generating electricity.
Solar energy simple english wikipedia, the free encyclopedia. Mar 15, 2012 the energy stored in the food is known as chemical energy. Sources of energy class 10 notes pdf science physics. There are two main types of solar power systems, namely, solar. The best app for cbse students now provides sources of energy current class 10 notes latest chapter wise notes for quick preparation of cbse board exams and school based annual examinations. Sep 1, 2014 study the different topics of solar energy.
Scientists have used solar energy to power spaceships since 1958. Renewable energy sources pdf notes res pdf notes smartzworld. Table of contents solar energy 1 energy from the sun 1 early solar energy commercial adaption 3 applications of solar technology 3 architecture and urban planning 4 agriculture and horticulture 4 transport and reconnaissance 5 solar thermal 7. Solar energy is abundant, in exhaustible, clean, and cheap. Office for official publications of the european union 2009 76 pp. This is the value of what we call the solar constant, although though there is some variation due to earths elliptical orbit. For example, given policies to address existing regulatory barriers and market imperfections, solar thermal or photovoltaic electricity technologies can compete.
Module vi solar energy conversion system secs lecture21. Working for promotion of the pv technology among the rural population out of access to electricity, esap has been carrying out different trainings for capacity building of partner organizations. Introduction to solar energy 1 introduction to solar energy. Energy as this book is on solar energy, it is good to start the discussion with some general thoughts on energy. Since there are very few waterfalls which could be used as a source of potential energy, hydro power plants are associated with dams. Solar electricity technical training manual level 1, alternative energy promotion center aepc energy sector assistance programme esap, 2006 4. Lecture notes photovoltaic solar energy systems edgerton. This chapter only discusses the use of solar energy for the direct production of electricity photovoltaic solar energy. When photons hit a pv cell, they may be reflected or absorbed. 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 the zimbabwe.
Can increase power reliability as backup or standby power to customers. The future of solar energy considers only the two widely recognized classes of technologies for converting solar energy into electricity photovoltaics pv and concentrated solar power csp, sometimes called solar thermal in their current and plausible future forms. Table of contents solar energy 1 energy from the sun 1 early solar energy commercial adaption 3 applications of solar technology 3 architecture and urban planning 4. Pdf an introduction to the renewable energy resources. Storage, conversion, transmission and radiation pdf 7. Cbse class 10 science notes chapter 14 sources of energy pdf free download is part of class 10 science notes for quick revision. Most solar panels used today have an average life expectancy of between 2040 years.
With some technologies such as solar or wind, it is a form of renewable energy. As well as its traditional human uses in heating, cooking, and drying, it is used today to make electricity where other power supplies are absent, such as in remote places and in space. Alternatively, electricity can be used as the auxiliary energy supply by coupling an electric motor directly to the compressor shaft. Sources of energy class 10 notes science chapter 14. Energy production 85% of energy is generated using fossil fuels. The solar energy evaporates the water oceans, rivers, lakes and ponds. Renewable energy sources lecture notes renewable energy sources lecture notes syllabus unit i principles of solar radiation. With ample sunlight, pv systems can harness energy in hot and cold climates. Solar energy notes sunwind solar car kits and solar energy. Because energy supply facilities typically last several decades, technologies in these classes will dominate solar. The molten rocks and hot gases are called magma iiithe magma gets collected at some depths below the earths surfaces. Different things can happen due to different forms of energy. Ppt introduction to solar energy powerpoint presentation.
This book is written to serve the needs of under graduate students embarking introductory course in renewable sources of energy. You can find a few questions on the solar system in many competitive recruitment exams like railways rrb, ssc cgl, sbi po, sbi clerk, ibps clerk, and ibps po. The european strategic energy technology set plan proposed by the european commission in order to accelerate the availability of lowcarbon energy technologies has already established the european solar initiative, as one of the industrial initiatives in the six energy sectors most relevant for europe. Module vii hydroenergy conversion system hecs lecture26hydropower energy sources. Photovoltaic solar energy opre 6389 lecture note compiled at 18. About 34% of this energy is reflected off clouds, dust particles, and the earth. Chapter 17 solar energy renewable technologies represent an important opportunity, but not a panacea for the u. The solar energy is the energy obtained by capturing heat and light from the sun. Intro to the quantum, energy quantization pdf energy in chemical systems and processes, flow of co 2 pdf 4. The emsd welcomes suggestions for improving the notes. A solar thermal energy collection system or solar system for short is defined as a set of equipment that intercepts incident solar radiation and stores it as useful thermal energy to offset or eliminate the need for fossil fuel consumption. Solar energy is a renewable source solar energy does not pollute solar cells operate in complete silence solar energy is free solar electricity can be stored for later use or sold to your power company solar panels require little maintenance if there is a problem advantages of solar energy. Questions on the solar system funnily turn up in both geography and science. Notes of ch 14 sources of energy class 10th science.
Direct normal irradiance is the amount of solar radiation received directly from the sun ignoring radiation from the rest of the sky falling onto a plane perpendicular to the direction of 73 2015 rvist department of electrical and electronic engineering lecture notes solar installation technology the sun. Photovoltaic solar energy systems the solar resource pdf. Multiple solar cells form modules called solar panels that range in output from 10 to 300 watts. Department of electrical engineering, veer surendra sai university of technology burla page 29. In other words, muscular energy is converted into mechanical energy. The spectrum of solar energy is quite wide and its intensity varies according to the timing of the day and geographic location.
There is a fact, or if you wish, a law, governing all natural phenomena that are known to date. The oldest uses of solar energy is for heating, cooking, and drying. This can be divided into five regions in increasing order of wavelengths. The first hydroelectric plant which combined water and gravity to drive electricity generating turbines was built in 1882 and offered a relatively green and sustainable source of electric power on a very large scale. As of 2011, the technology produced less than one tenth of one percent of global energy demand. Solar energy notes and links solar heat 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. Modified by georgia agricultural education curriculum office june 2002. The organisation of this book is roughly linked to the three lectures on photovoltaics pv, that are given at. Energy of an electron increases upon receiving photovoltaic energy through a light photon. Solar photovoltaic system design manual for solar design engineers, alternative energy promotion center aepc energy sector assistance programme esap, 2003 3. January 2019 2 guidance notes for solar photovoltaic pv system installation 1 foreword.
The total amount of solar energy incident on earth is vastly in excess of the worlds energy requirements and could satisfy all future energy needs if suitably harnessed. 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. The energy produced by the sun in the form of heat and light energy is called as solar energy. Solar energy is radiant light and heat from the sun that is harnessed using a range of everevolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture, molten salt power plants and artificial photosynthesis. European commission photovoltaic solar energy development and current research luxembourg. Solar energy vs light energy 174 petawatts pw of energy comes in form of solar radiation or insolation hits our atmosphere. Solar panels are unattractive and they can damage your roof. Solar thermal energy ste is a form of energy and a technology for harnessing solar energy to generate thermal energy or electrical energy for use in industry, and in the residential and commercial sectors. Some energy sources have non energy uses, for example coal or natural gas can be used as a feedstock in fertilizer plants. Introduction to solar cooling systems ced engineering.
An introduction to solar energy design fundamentals. Sunlight is composed of photons like energy accumulations, or particles of solar energy. Exploring the solar system ian ridpath we live on a planet called earth, one of eight major planets orbiting a fairly average star called the sun. We will begin with a quote from the feynman lectures on physics.
These notes introduce important solar energy facts and contain links to sites that best explain various solar concepts. Hydro power plants convert the potential energy of falling water into electricity. The food eaten by man or animal provides him the muscular energy. Solar energy, with a focus on photovoltaics, which is the technology that allows to convert energy transported in light directly into electrical energy. Photovoltaic solar energy 1 science of photovoltaics. Offers customers a choice in meeting their energy needs. Solar photovoltaic pv systems an overview figure 1.
There is no known exception to this lawit is exact so far as we know. Solar energy conservation solar energy ireland facts aug 16, 2017 myth 2. Solar tech elec the solar power company solar tech elec the solar power company in florida famous for the best solar panels installation and photovoltaic solar energy suppliers for residential and commercial areas. 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. Aug, 2017 study material and 14 sources of energy class 10th science. In one hour the earth receives more energy from the sun than the world consume in one year. Solar electric system design, operation and installation. Oct 29, 2018 cbse class 10 science chapter 14 sources of energy current notes in pdf are available for free download in mycbseguide mobile app.
Solar energy, with a focus on photovoltaics, which is the technology that. Mar 21, 2020 solar energy, radiation from the sun capable of producing heat, causing chemical reactions, or generating electricity. Technology has provided a number of ways to utilize this abundant resource. While residing in its valence band, an electron has a certain amount of energy.
Under cloudy conditions, it is true that photovoltaics produce only 5 to 30 percent of their maximum output. Pdf renewable sources of energy local author by dr. Download renewable sources of energy local author by dr. Solar energy is radiant light and heat from the sun that is harnessed using a range of everevolving technologies such as solar heating. Photovoltaic solar energy systems the solar resource.
Solar system gk notes in pdf our little corner of the universe is called the solar system. Energy from the sun is referred to as solar energy. Nuclear, biomass and hydroelectric make up most of the rest. It has been used for thousands of years in many different ways by people all over the world.
Solar energy notes sunwind solar car kits and solar. Solar electric system design, operation and installation an overview for builders in the u. Consequently, we receive a relatively constant flux density of energy, defined as the solar constant. The energy stored in the food is known as chemical energy. Solar energy is the technology used to harness the suns energy and make it useable. Another traditional source of energy was the kinetic energy of flowing water or the potential energy of water at a height. Clerestories inroof windows provide solar radiation to the back of the house. Solar energy is the transformation of heat, the energy that comes from the sun. Ultraviolet c or uvc range, which spans a range of 100 to 280 nm.
Here are some of the lecture notes presented in the class. Sundaravalli, lakshmi publications the book renewable sources of energy for engineering and technology studies. These photons contain various amounts of energy corresponding to the different wavelengths of the solar spectrum. Residential solar systems photovoltaic pv systems, or solar panel systems, convert sunlight into electricity. Energy information administration defines utilityscale solar plants as those generating at least one megawatt of electricity. Every hour, the sun beats down with enough power to provide global energy for an entire year.