1 Wave energy Introduction to wave energy There are several possibilities to harvest different forms of energy from the sea. One of these options is the usage of waves for the generation of electricity. The devices needed to perform this task are called wave energy converters. Wave energy is indirect solar energy in twice. At first there is the wind, which is caused by variations in atmospheric pressure due to a differential solar heating of earth's surface by the sun. Different regions of pressure drives a force which rises a movement of atmospheric air masses that causes the earths wind system. If wind strikes over the surface of an open water, waves are induced. First they are very flat with only a low level of energy. When there is a long distance over
Tartu 2013 Topics Renewable energy Solar energy Wind energy Hydroelectric power Geothermal energy Biomass energy Renewable energy Renewable energy comes from sources that naturally renew, or will not run out in our lifetimes. Includes sunlight, wind, water, geothermal heat and various forms of biomass. Renewable energy cannot be exhausted and is constantly renewed. Does not harm the environment. Saves money. Solar energy Solar energy is the technology used to harness the sun's energy and make it useable. Every hour the sun beams onto Earth more than enough energy to satisfy global energy needs for an entire year. Solar energy use has surged at about 20 percent a year over the past 15 years, thanks to rapidly falling prices and gains in efficiency. Solar energy is inexhaustible. Noise free. Does not harm the environment. Click to edit Master text styles Second level Third level
.......................... 2 1.2. Potential future utilization..............................................................................4 1.3. Why Don't We Use More Renewable Energy? ...........................................5 2. Energy Types 2.1. Wind Energy.......................................................................................................6 2.1.1. Annual Generation........................................................................................7 2.1.2. Growth and cost trends................................................................................8 2.1.3. Theoretical potential.....................................................................................9 2.1.4. Benefits of wind energy................................................................................10 2.2. Solar Energy........................................................................................................11 2.2.1 Development, deployment and economics.................
....................................................... 37 10.3 Solar..........................................................................................................................37 10.4 Wind......................................................................................................................... 37 .......................................................................................................................................... 38 Picture 10.3. Wind turbine................................................................................................38 HYDROPOWER................................................................................................................38 11.1 How hydropower works.......................................................................................... 38 11.2 Where hydropower is generated...............................................................................39 11
New energy sources Rauno Hermann Scheer Energy law example for 47 countries 6.3% to over 20% Numerous awards including The Right Livelihood Award Renewable energy in world Investments 63 billion USD > 120 billion USD 20062009 Wind energy: 74 000 MW to 135 000 MW Solar energy: 5100 MW to 19 000 MW WHAT ARE THE ALTERNATIVES TO TODAYS SOLAR, WIND AND BIOMASS ENERGY SOURCES? Osmotic power How it works? Pressure created by osmosis powers turbines Where could be used Where fresh and salt water meet (creeks, fjords) Desalination plants Now Worlds first test factory in Norway Tofte (2009) Disadvantages Km2s of membranes needed Norway, Tofte Click to edit Master text styles Second level Third level Fourth level
“Green Illusions” The Dirty Secrets of Clean Energy and the Future of Environmentalism Ozzie Zehner Author Ozzie Zehner Visiting scholar at University of California, Berkeley Kettering University ( BS – Engineering ) The University of Amsterdam ( MS/Drs – Science and Technology Studies ) http://boa.czp-vecer.si/vecer2000/20131211/5023698_ Primarily researches social, cultural, political and economic .jpg conditions influencing energy policy priorities and project outcomes Introduction This book talks about the negative side effects of the alternative energy like wind turbines, solar cells and bio fuels. We don't have an energy crisis. We have a consumption crisis. And
resources such as geothermal power, fresh water, timber, and biomass must be carefully managed to avoid exceeding the worlds capability to displace them. Solar energy is the energy derived directly from the Sun. Along with nuclear energy, it is the most important source of energy on Earth. People usually use solar energy to produce electricity and heat. Wind power is the conversion of wind energy into a useful form of energy, such as electricity, using wind turbines. These wind turbines are popular in counties, where the average speed of the wind is at least 6 meters per second for example in Germany, Denmark, USA and India. Hydropower is energy derived from the movement of water in rivers and oceans,it can be used to generate electricity using turbines, or can be used mechanically to do useful work. It is a very common resource. Besides these , there are a lot more renewable resources such as animals, plants, forrests and so on.
· At this rate, our future cities may turn out to be quasi-temporary, missing the basics of human life, such as water and electricity, still belching out the waste of fuels that warm the globe. · The New City in China: The buildings and all around it work like biological, growing beings, photosynthesising and producing and re- using their own energy. China will be largest solar manufacturer in the world. · Masdar city in United Arab Emirates near Abu Dhabi. First city in the world, that would rely on the renewable energy sources. 6 square kilometers, home for 50,000 people and 1,500 businesses. · Habitat 2020 is a future example of biomimetic architecture that fuses high-tech ideas with basic cellular functions to create `living' structures that operate like natural organisms. The exterior has been designed as a living skin. The surface would allow the entry of light, air and water into the housing. The garbage would be
Water creates energy Eduard Kamenski 11a form The world uses energy from many different sources, such as: hydroelectric power, nuclear power plants, solar energy, and wind generated power. There are positive and negative aspects of each source, but which source of energy is best? My opinion is that the best source of energy is water and I'll bring up some facts why do I think so. Hydroelectric power is currently the world's largest renewable source of electricity. It accounts for six percent of the worldwide energy supply or about fifteen percent of the world's electricity. Water has been found to be a major source of energy. Water power is utilized at present mainly as hydro-electricity. It is produced from moving water and from falls with the help of turbines and dynamos. Hydro-electricity has acquired great significance as a source of energy in the country in the present times and is being put to different uses. The following are the advantages of hydro- electricity in comparison wi
Disadvantages of nuclear power generation:.................................................................................10 Conclusion..........................................................................................................................................12 References..........................................................................................................................................13 Introduction What is nuclear power? Nuclear power is any nuclear technology designed to extract usable energy from atomic nuclei via controlled nuclear reactions. The most common method today is through nuclear fission, though other methods include nuclear fusion and radioactive decay. All utility-scale reactors heat water to produce steam, which is then converted into mechanical work for the purpose of generating electricity or propulsion. In 2007, 14% of the world's electricity came from nuclear power. More
Wind power is very old power source, sailing ships have been using wind power for at least 5,500 years. The first practical windmills were built in Afghanistan, from the 7th century to grind corn and draw up water. The first windmill for electricity production was built in Scotland in 1887 to power the lighting in the cottage, thus making it the first house in the world to have its electricity supplied by wind power. During the Second World War, small wind generators were to recharge submarine batteries. In the 1990s, wind power became more important, because fossil fuels pollute the atmosphere and humanity needed alternative fuels. That's because wind power is so necessary
3.53.9 Lethal to salmonids, although acclimated roach can survive for longer 3.03.4 Most fish are killed within hours at these levels Environmental effects Very obvious environmental effect of acid rain is the loss of fish in acid sensitive lakes and streams. Loads of fishes are not able to survive in acidic water. There are 2 ways acid rain effects lakes and streams: chronic and episodic. The first one is long-term process and this acidification is result from years of acidic rainfall. Episodic, on the other hand, is rapid change sudden jump in the acidity of water. Acid deposition may influence forest vegetation and soils. It removes soil nutrients such as calcium and magnesium from soils in high elevation forests. Acid rain may also help weaken natural defenses of some trees, making them more vulnerable to some diseases and pests. Acid rain
Solowheel Mario Kallaste 12R What is Solowheel? Solowheel is an electrical standing unicycle that can be carried like a small bag. Created by Inventist, the personal mobility transporter has the dimensions of a single bicycle wheel and is used for transportation. Click to edit Master text styles Second level Third level Fourth level Fifth level The technology of Solowheel A 1,000-watt lithium-ion battery provides energy to the assembly, allowing you to ride for up to 12 miles on a single charge (around two hours at moderate speeds). Recharging the battery takes an estimated 45 minutes, so you can easily plug in at work to get your unicycle ready for the trip home later. The Solowheel uses gyroscopes to keep you upright the entire time. You ride it by folding out the foot platforms on either side, mounting
The large expanses of lakes Erie and Ontario extend the number of frost-free days, permitting the cultivation of grapes, peaches, pears and other fruits. The Great Lakes and St. Lawrence region is sugar maple country. In the autumn, the tree's leaves, Canada's national symbol, are ablaze in red, orange and gold. The sap is collected in Canada, Kärt Kalvet 8a spring and evaporated to make maple syrup and sugar, a culinary delicacy first prepared and used by the Aboriginal North American peoples. Appalachian Region - The Atlantic Provinces New Brunswick, Nova Scotia, Prince Edward Island and Newfoundland are the smallest Canadian provinces, and were the first to be settled by Europeans. Evidence of contact as far back as AD 1000 has been found at a Norse settlement at l'Anse aux Meadows, in Newfoundland. The Grand Banks have been called the "wheat fields" of Newfoundland. This hallow continental
In 2005, renewable energy represented one-fifth of total power generation. Hydropower is the most advanced of the renewable and represents 87% of this production. 160 countries all over the world are using hydropower. Five countries make up more than half of the world's hydropower production. Those countries are: Brazil,Canada, China, Russia and the USA. (Production) *Most of the energy comes from the potential energy of dammed water driving a water turbine and generator. In this case the energy extracted from the water depends on the volume and on the difference in height between the source and the water's outflow. *Pumped storage hydroelectricity produces electricity to supply high peak demands by moving water between reservoirs at different elevations. At times of low electrical demand, excess generation capacity is used to pump water into the reservoir. And when there is a big demand, like in the evenings, then the water is
1)Main machinery On a ship, the engine room, or ER, is the propulsion machinery spaces of the vessel. To increase the safety and damage survivability of a vessel, the machinery necessary for operations may be segregated into various spaces. The engine room is one of these spaces, and is generally the largest physical compartment of the machinery space. The engine room houses the vessel's prime mover, usually some variations of a heat engine - diesel engine, gas or steam turbine. On some ships, the machinery space may comprise more than one engine room, such as forward and aft, or port or starboard engine rooms, or may be simply numbered. 1.1)Main engine The engine room of a motor vessel typically contains several engines for different purposes. Main, or propulsion engines are used to turn the ship's propeller and move the ship through the water. They typically burn diesel oil or heavy fuel oil, and may be able to switch between the two
A sustainable city should be able to... • feed itself with minimal reliance on the surrounding countryside, and power itself with renewable sources of energy. • create the smallest possible ecological footprint • produce the lowest quantity of pollution possible • efficiently use land • compost used materials - Practical Achievement • Different agricultural systems - agricultural plots within the city – reduces distance. • Renewable energy sources - wind turbines, solar panels, or bio-gas created from sewage. • Methods to reduce air conditioning - planting trees and lightening surface colors, etc Practical Achievement • Transportation planning- Improved public transport and an increase in pedestrianization to reduce car emissions • Green roofs Conclusion Sustainable cities are the way of the future, perhaps the distant future, but it is clear there are aspects of sustainability that many
Furthermore, large areas of Belarus, Ukraine, Russia and beyond were affected. The Chernobyl site and plant The Chernobyl Power Complex in Ukraine consisted of four nuclear reactors. Two reactors were under construction at the time of the accident. An artificial lake was constructed to provide cooling water for the reactors. The 1986 Chernobyl accident On 25 April the reactor crew at Chernobyl 4 began preparing for a test to determine how long turbines would spin and supply power to the main circulating pumps following a loss of main electrical power supply. This test had been carried out at Chernobyl the previous year, but the power from the turbine ran down too rapidly, so new voltage regulator designs were to be tested. A series of operator actions, including the disabling of automatic shutdown mechanisms, preceded the attempted test early on 26 April. By the time that the operator moved to shut
organic matter including manure, sewage sludge, municipal solid waste, biodegradable waste. If opportunely refined it can be used for electricity production. Also for space-, water- or process heating. Unintentional production of biogases has been an ongoing issue in many regions of the world, and several nations have also looked to biogas as a potential source of clean energy. India and China have both invested extensively in creative biogas technology to provide fuel for their citizens and there are a number of interesting applications for this gas which appeal to people who are interested in sustainable energy and the health of the environment. The basis for biogas is organic material such as food scraps and feces which are held in an anaerobic area, which can range from a storage tank which is not ventilated to a device which is specifically designed to produce gases. The conditions
atmosphere and the ocean, in changes in the global water cycle, in reductions in snow and ice, in global mean sea level rise, and in changes in some climate extremes. Initial causes of temperature changes Greenhouse gases The greenhouse effect is the process by which absorption and emission of infrared radiation by gases in a planet's atmosphere warm its lower atmosphere and surface. It was proposed by Joseph Fourier in 1824, discovered in 1860 by John Tyndall, was first investigated quantitatively by Svante Arrhenius in 1896, and was developed in the 1930s through 1960s by Guy Stewart Callendar. Solar activity Since 1978, output from the Sun has been precisely measured by satellites. These measurements indicate that the Sun's output has not increased since 1978, so the warming during the past 30 years cannot be attributed to an increase in solar energy reaching the Earth . The graphs show otherwise. Effects of global warming on oceans
7.5 1,900-2,100 4,550 3,945 2,068 1,793 8.0 2,050-2,500 4,975 4,313 2,261 1,961 8.5 2,500-3,000 . . . . 9.0 3,000-4,000 5,480 4,751 2,491 2,160 10.0 4,000-5,000 . . 32 . . 11.0 5,000+ . . . . Fishbuster Trawl Doors Features The first truly "universal" otterboard. Extremely effective both on bottom and midwater fishing conditions. Fine lines to maximize spread and reduce drag. Rugged construction and stress-relieved welds designed to withstand rough bottoms, midwater strains, and onboard handling. V-form design for stability. Lift-to-drag ratio in excess of 2 to 1 over low-aspect ratio otterboards. 33 Half-weight shoes available for midwater and semipelagic fishing. 34
German Green Energy Cost and Efficiency Recycling What is Green Energy? -It is energy resources that are renewable -Can be naturally replenished -Clean, Safe and not harmful to the environment (aka mother earth) Types of Green Energy Green Energy going cute Solar Power · Is produced by using photovoltaic cells, which capture sunlight and turns that into energy. Problems ? -The sun has got to shine -The cost of solar panels and the systems range between $20k-40k -The light from the sun produces a very small amount of energy Wind Power -These giant pinwheels spin from strong winds which spins a turbine of a generator to produce energy. Giant Pin Wheels? Any Studies done? · It is said that wind · Bentek Energy did the energy is suppose to Study and used about bring down costs and 1/3 of the US population reduce the in the air. for 2 years.
Answers for the IPCC Summary. 1.Radiative forcing is a measure of the influence that a factor has in altering the balance of incoming and outgoing energy in the Earth-atmosphere system and is an index of the importance of the factor as a potential climate change mechanism. 2.The three main things that alter the energy balance of the climate system are the changes in the atmospheric abundance of greenhouse gases and aerosols, in solar radiation and in land surface properties. 3.The two sources for the increased concentration of CO2 in the atmosphere are production, distribution and consumption of fossil fuels and as a by-product from cement production. 4.The two main sources of methane pollution are agriculture and fossil fuel use. 5.Volcanic aerosols are not included to the list because of their episodic nature. 6.The world's oceans absorb more than 80% of heat. 7.The total 20th-century rise is estimated to be 0.17 [0.12 to 0.22] m. 8.Arctic has seen twice the inc
except where they appear in terms multiplied by g, the acceleration due to gravity. The essence of the Boussinesq approximation is that the difference in inertia is negligible but gravity is sufficiently strong to make the specific weight appreciably different between the two fluids. Sound waves are impossible/neglected when the Boussinesq approximation is used since sound waves move thru density variations. 8. Three laws of thermodynamics? First Law of Thermodynamics The first law of thermodynamics is often called the Law of Conservation of Energy. This law suggests that energy can be transferred from one system to another in many forms. However, it can not be created nor destroyed. Thus, the total amount of energy available in the Universe is constant. Einstein's famous equation (written below) describes the relationship between energy and matter: E = MC 2
...........................................15 Conclusion.....................................................................................................................................16 Used materials:...............................................................................................................................17 2 Introduction With the advancement of technology ideas that used to be futuristic are nowadays already being researched with impressive headway made. One such research project is the railgun. I picked this topic because railguns are a childhood dream of every kid who watched sci- fi movies or something related to space. I wanted to learn more about how they're supposed to work and it is important because the research has done great leaps since 2009. Metaphorically it
Click to edit Master text styles Second level Third level Fourth level Fifth level Tallinn University of Technology Tallinn 2012 Content What actually means Green IT? Origin Regulations and industry initiatives Approaches Green computing certifications Green IT Click to edit Master text styles environmentally sustainable Second level Third level computing or IT Fourth level Fifth level minimal or no impact on the
Estonia is covered by about 18 000 square kilometers of forest. Estonia is also rich in lakes and rivers The largest lake is Peipsi and the second-largest lake is Võrtsjärv. The largest river is Võhandu whinch is 162 meters long. Estonia has many national parks. A national park is a protected area. They are good to protect animals, birds, insects and other natural resources. The most famous national parks are: Lahemaa, Karula, Soomaa, Vilsandi, Matsalu. On the 8th millenium BC first people began to settle here in Estonia. On the 13th century Germans and Danish tried to conquer our country. On the 16th century the first book in Estonian language was publicated. Then the Livonian War began. Northern part of Estonia was occupied by Sweden and the southern part of Estonia was occupied by Poland. On the 17th century Estonia was under Sweden occupation. In 1632 Tartu University was founded. On the 18th century there was a Norhern War and Estonia was occupied by Russia
flow or ice, or they may be ice structures that are artificially structured. Ice climbing is a crucial part of any mountaineering activity or training. Ice climbing competitions are a sport for a small group of climbing specialists. But the big difference of ice-climbing from other "non mass sports" is, that it is also very interesting for spectators and media. As a matter of fact, ice climbing is a fairly new Competition Sport. The first known ice climbing competition was organized in Courmayeur on the Brenva glacier in 1912. Ice climbing competitions started in Russia (at that time the Soviet Union) and have been held each winter since 1970. There were three disciplines: difficulty, speed and speed climbing of a longer route (100+m) by roped groups where the lead climber changed every 40m. The competitions at Courchevel in France were also famous. The main rule was
· Google delivered search results people really wanted- trustworthy for users. The promised not to sell placement in search results to advertisers and instead rely on the true natural search to deliver users the content they really are looking for. · Effectively monetizing paid search-made Google economically successful as a business. They adopted a "cost per impression" in 1999 and then in 2002 they adopted " cost per click" paid listing model that was popularized by Overture by doing a ratio of actual CPC("cost-per-click") and expected CTR("click trough rate") to ensure users saw ads that were closer to what they actually searching for. Google Analytics is a good example of how advertisers could track advertising keywords were most likely to yield sale. 2. What were the reasons for being a last-mover and what were the advantages?
Preparing for exam. Focus areas Defining innovation ● “An innovation is an idea, practice, or object that is perceived as new by an individual or other unit of adoption.” (Rogers 1952) ● CIS survey: “Product innovations must be new to your enterprise, but they do not need to be new to your market”. ● “Companies achieve competitive advantage through acts of innovation. They approach innovation in its broadest sense, including both new technologies and new ways of doing things” – (Porter 1990) ● “An innovative business is one which lives and breathes “outside the box”. It is
ground, where it won't face the environment. However we shouldn't depend on nuclear energy as Uranium reserves are ending, especially when the world population is increasing and so is the demand for energy. There is Uranium in seawater, but getting it is too expensive. We can only depend on nuclear power for a few years or decades. On the other hand, we will always have wind and solar power. Right now, producing solar energy is quite expensive but as technology improves, we will hopefully be able to produce solar energy with lower costs. The world should use as much wind and solar power as possible. As years go by, we will hopefully find a way to produce cheap and environmentally- friendly energy, but right now, we can't give up nuclear energy. At the moment we can say it is a blessing since we need it but in future it probably won't be.
Many of these resources can be of local origin and promote local business and industry. The main advantages with district heating are high security of supply through utilisation of domestic renewable energy resources, if available, low primary energy demand due to high conversion efficiency, as well as small CO2 emissions thanks to low fossil fuel use and the high energy efficiency. Incineration of waste with heat recovery to district heating may be used at very low cost. District heating also gives opportunity for cogeneration of power and heat with very high efficiency. District heating enables profitable heat supply with outstanding environmental performance but there are in many places various barriers to a prosperous DH development. Barriers to district heating in the United Kingdom (UK), Ireland, France, Romania and the Czech Republic, as well as barriers to export of Swedish district heating knowledge and products to
...................................9 12. References....................................................................................................10 Introduction I chose finland because there are friendly people and beautiful nature. Finland is bigger than Estonia. There lives over 5 milj. people. Finland capital is Helsingi and there lives about 2 milj. people. Highest top is 1328m. Finland is bordersed with Sweden to the west, Russia to the east and Norway to the north. It is the eight largest city in Europe. Most Finns speak Finnish. The second language is Swedish. Finland is rated the sixth most peaceful country in the World. In Finland there are more than 60000 lakes. Capital: Helsinki Area: 338145km2 Population: 5200000 Language: Finnish, Swedish Currency: Euro (EUR)
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