About solar power technology - Free Essay Example

Sample details Pages: 3 Words: 811 Downloads: 10 Date added: 2019/10/30 Category Energy Industry Essay Level High school Tags: Solar Energy Essay Did you like this example? Energy has been in use by people for everything from walking to sending astronauts into space. The growth of technology over the years has done some amazing things for mankind and the technology is only evolving as the years go by. One of the most innovative but the most under used technology of all the great evolution is solar power technology. There are two types of energy: Don’t waste time! Our writers will create an original "About solar power technology" essay for you Create order Stored (potential) energy Working (kinetic) energy    For example, the food a person eats contains chemical energy, and a persons body stores this energy until he or she sues it as kinetic energy during work or play (USEIA, 2017). Potential energy is stored energy and the energy of position. Kinetic energy is the motion of waves, electrons, atoms, molecules, substances, and objects. Chemical energy (Potential energy) is energy stored in the bonds of atoms and molecules. Batteries, biomass, petroleum, natural gas, and coal are examples of chemical energy. Chemical energy iKens converted to thermal energy when people burn wood in a fireplace or burn gasoline in a cars engine. Radiant energy (Kinetic energy) is electromagnetic energy that travels in transverse waves. Radiant energy includes visible light, x-rays, gamma rays, and radio waves. Light is one type of radiant energy. Sunshine is radiant energy, which provides the fuel and warmth that make life on earth possible. The two main benefits of using solar energy: Solar energy systems do not produce air pollutants or carbon dioxide. Solar energy systems on buildings have minimal effects on the environment. The main limitations of solar energy: The amount of sunlight that arrives at the earths surface is not constant. The amount of sunlight varies depending on location, time of day, season of the year, and weather conditions. Solar photovoltaic costs are declining, but estimates vary across sources (EIA-860 Annual Electric Generators Report) The amount of sunlight reaching a square foot of the earths surface is relatively small, so a large surface area is necessary to absorb or collect a useful amount of energy. Costs for utility-scale solar photovoltaic (PV) systems have declined in recent years most sources show that system costs on a per-watt basis have fallen about 10% to 15% per year from 2010 through 2016. The level of those costs in certain years often varies across sources for reasons largely attributable to the way these costs are estimated. To estimate capital costs of generating technologies, analysts use one of two common methods total reported costs or aggregated component costs. Both approaches help explain the cost of utility-scale solar PV systems. Reported costs: Using actual project data provides an empirical analysis that captures a large range of reported project costs in the market and accounts for the substantial variability in project design, location, and timing observed in the real world. Challenges with this approach include uncertainty about whether certain cost components are included in reported system costs, such as interconnection costs and the treatment of financing expense. Also, the data for each year reflect projects completed in that year, which do not necessarily reflect the costs of projects initiated in that year. When people use electricity in their homes, the electrical power is probably generated by burning coal or natural gas, by a nuclear reaction, or by a hydroelectric plant on a river, to name just a few sources. When people fill up a cars gasoline tank, the energy source is petroleum (gasoline) refined from crude oil and may include fuel ethanol made by growing and processing corn. Coal, natural gas, nuclear, hydropower, petroleum, and ethanol are called energy sources. Crude oil, natural gas, and coal are called fossil fuels because they were formed over millions of years by the action of heat from the earths core and pressure from rock and soil on the remains (or fossils) of dead plants and creatures such as microscopic diatoms (USEIA, 2017). Most of the petroleum products consumed in the United States are made from crude oil, but petroleum liquids can also be made from natural gas and coal. On the other hand, as one of the major alternatives to silicon, thin-film cadmium telluride cells represent 5% of PV production they are a lot cheaper to make, but also a lot less efficient (they convert less sunlight to power) and have struggled to compete with silicon on overall cost. In 2014 a scientist Professor Jon Major from the United Kingdom went in search of an alternative to cadmium which would be Tofu. The chemical used to make tofu and bath salts could also replace a highly toxic and expensive substance used to make solar cells, a new study has revealed. Cadmium chloride is currently a key ingredient in solar cell technology used in millions of solar panels around the world. This soluble compound is highly toxic and expensive to produce, requiring elaborate safety measures to protect workers during manufacture and then spe cialist disposal when panels are no longer needed (Greenpeace, 2017).

Film Reflection Home - 731 Words

Film Reflection: â€Å"HOME (2009)† Title : Home Year : 2009 Director : Yann Arthus-Bertrand Watch (Your) Home! I watched the documentary Home recently, and really, earth is so magnificent. So many beautiful shots, such an eye-opener of the need of every part of nature. I really loved this documentary about our home. Besides all the gorgeous pictures of the earth and its nature, I really enjoyed one specific scene about trees (00:47:48). This scene explains why trees are important for our living; why they are â€Å"the cornerstone of the climatic balance on which we all depend†. In the background a sad, sensitive song is sung. A man is singing solo and uses his dark, deep voice, as if he were mourning. The combination of sounds are like†¦show more content†¦To satisfy (and behold) its customers, organizations might have decided to invest in sustainability, under the guise of goodwill for the future. But now I ´ve seen this movie â€Å"Home†, I see that organizations really have a great responsibility in changing the tide. Their decisions could be made with the sincere aim. But at the same time I think organization could make much more radicalShow MoreRelatedFilm Review : The Australian Academy Of Cinema And Television Arts1136 Words   |  5 PagesAwarded for the Best Original Screenplay and Best Film at the Australian Academy of Cinema and Television Arts (AACTA) ceremony, director Jennifer Kent brings to life a unique form of horror in her psychological thriller film, The Babadook. The film focuses on a mother and her child as they go through a dark period of their lives. The mother, whose name is Amelia, lost her husband in a car crash when they were on the way to the hospital for her to give birth to her son, Samuel. 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Parallel and Distributed Processing Symposium †MyAssignmenthelp.com

Question: Discuss about the Parallel and Distributed Processing Symposium. Answer: Introduction: Critical Path Method or CPM is a stepwise technique of project management that is used for planning of strategies for the various processes that identifies critical and non-critical tasks to prevent time and process related issues in the project. The CPM is generally applied to those projects that have numerous activities interacting in a complicated pattern (Bhme et al. 2012). The steps of applying Critical Path Method to a project are as follows: The tasks of the project are required to be defined and listed sequentially. Relevant diagrams and flowcharts are required to be made that specifies the relation of the tasks with each other. The critical and non-critical relations within the tasks need to be recognised and segmented. The approximate completion time for each task is to be determined. Backup plans should be made for the most critical tasks (Schwalbe 2015). Planning Software and its Utility in Project Management The most popularly used and admired tool for the planning and management of any kind of project of any size is MS Project developed by Microsoft Corporation. It helps a team to complete projects with ease by providing built-in project management and planning templates, easy tools for scheduling the steps of performing a project and ease of access from any type of computing device like laptop, computer, tab and mobile phone. The MS Project helps the team to plan the shortest and easiest path to proceed in the project that requires less time and resource (Products.office.com 2017). Monitoring Project Progress The progress of a project can be easily monitored by using the various features of the MS Project Management Software. Each individual related to the project can upload progress report on daily basis and overall report on weekly basis in the MS Project, which can be viewed and updated by all the team members and manager of the project. The upcoming methods of execution of the project can also be shared within the project personnel so that the manager and others get an idea on the proceedings of the project (Products.office.com 2017). To ensure a successful project management it is the duty of the project manager to take frequent follow ups on the progress of the project from the team members of the project. This can be done easily by using a project planning software such as the MS Project the project team can upload daily or weekly reports on the progress of the project in the form of Gantt charts, Timeline charts, Spreadsheets, Excel Sheets, and such. The manager can also arrange for weekly meetings with the team of the project and discuss the progress of the project and the future planning regarding the progress of the project (Young 2013). Changes possible in an IS/IT Project and their Management Three types of changes are there that can be experienced in an IS/IT Project: Developmental Change This type of change is made within a project when some sudden modifications or alterations are required to be made within the project. The whole situation of the project is not altered; rather a part of it is modified (Lee, Bull and Ho 2013). Transitional Change This type of change occurs when it becomes necessary to implement a new method or strategy in the project. The previous course of actions of the project is discarded and new ones are implemented (Kerzner 2013). Transformational Change This type of change generally occur when a new process is born because of failure of a previous process. It is an uncontrolled change that cannot be prevented from occurring but can be modified gradually (Hayes 2014). The changes can be managed by implementing proper change control methodology within the project and if the type of change can be identified within the project, the manager can control the reactions of the team members to the changes (Hayes 2014). References Bhme, D., Wolf, F., de Supinski, B.R., Schulz, M. and Geimer, M., 2012, May. Scalable critical-path based performance analysis. In Parallel Distributed Processing Symposium (IPDPS), 2012 IEEE 26th International (pp. 1330-1340). IEEE. Hayes, J., 2014. The theory and practice of change management. Palgrave Macmillan. Kerzner, H., 2013. Project management: a systems approach to planning, scheduling, and controlling. John Wiley Sons. Products.office.com. 2017. Microsoft Project Management, Templates, Scheduling, Tools. [online] Available at: https://products.office.com/en-in/project/project-management [Accessed 27 Aug. 2017]. Schwalbe, K., 2015. Information technology project management. Cengage Learning. Young, T.L., 2013. Successful project management (Vol. 52). Kogan Page Publishers.