PHYS1002 Assignment 2 a) What materials have been used previously for PV solar cells powering space stations? [25] A Photovoltaic solar cell (PVSC) is an electrical device which converts light from the visible spectrum into direct current (DC) electricity (Honsberg). The International Space Station (ISS) originally used purified silicon solar cells for electrical generation. Silicon cells were primarily used as a result of their relatively light weight and heat conduction properties (Wittry, 2005). In 2001, two 38ft x 239ft solar panels were installed on the ISS. The new cells were multi junction solar cells comprised of gallium indium phosphate on gallium arsenide on germanium. The germanium based cell resists oxidation, unlike its silicon oxide counterpart that experienced degradation in the upper atmosphere due to exposure to oxygen (Wiebusch, 2001). Furthermore, the Silicon based solar cell (deployed on the …show more content…
L. S. (2003). Handbook of photovoltaic science and engineering.: John Wiley & Sons. Honsberg, C. Solar Cell Structure. Retrieved 07/03/2017, 2017, from http://www.pveducation.org/pvcdrom/solar-cell-structure NASA. (2015). Solar Arrays on the International Space Station. Retrieved 30/04/2017, 2017, from https://www.nasa.gov/content/solar-arrays-on-the-international-space-station Vasanth. (2014). Power System and Sources For Spacecrafts. Retrieved 01/05/2017, 2017, from http://indianspacestation.com/resources/knowledge-center/tutorials/586-power-system-and-sources-for-spacecrafts Wiebusch, B. (2001). New solar cell panels Space Station. [News]. Design News; Manhassett, 56(4), 24. Wittry, J. (2005). Harnessing the Sun: NASA Studies Advanced Solar Cells on Station. Retrieved 30/04/2017, 2017, from https://www.nasa.gov/mission_pages/station/research/FTSCE_MiSSE_feature.html Yastrebova, N. V. (2007). High Efficiency multi-junction solar cells. sunlab.eecs.uottawa.ca: University of Ottawa, Centre for Research in
The audience for writing project one: summary and response will be my classmates and my instructor, Avon Waters. I am writing this for English 111 – an online Ivy Tech college course. This is the first writing project of four for semester one. The assignment is to select a core reading resource from the group listed and perform a summary and response style paper, using proper APA formatting and introducing the concept of a situation analysis. The core reading piece I have selected is one that personally interested me, as it deals heavily with history and facts versus opinions and controversy. This will be in APA format, as with every other paper written in this course. My goal with this paper is to offer additional insight into the piece I
Another thing that I observed and recorded with an a frequency count was Jamie doing several work sheets. One of theses worksheets was a math specifically counting and the other worked on identifying objects that started with the letter R. After the teacher gave instructions on both the papers Jamie started to work on her worksheets. With in the time it took her to finish these worksheets (less then 15 minute) Jamie ask on of the adults if she was doing the work correctly about seven times. One thing that I would modify in the future is the instructions that were given at the beginning. I would make sure that the students understood what they were support to be doing before they started the assignment. I would also be very specific with
1) I believe that my theoretical curves don’t really match like figure 4 but then again it somewhat does. My immigration curve and extinction curve do hit each other once, but not like in figure 4 where they hit each other twice. Also my extinction curve is going up like in figure 4 and my immigration curve is going down just like in figure 4. So I guess you could say that my curves represent the curves on figure 4.
Anchor standard 1: Read closely to determine what the text says explicitly. Cite specific evidence. Draw conclusions.
Solar systems, also known as solar panels, are built to be very efficient and require very little maintenance. Technology has helped to improve the look and construction of the solar panels. The solar systems that are built and installed today have to meet very strict guidelines. “Stringent quality control in the Modern Solar supply chain ensures the quality of solar product installed on your roof is reliable, durable, and of the highest quality standards.” (“Solar Energy Benefits”). These panels are built using “monocrystalline cells that are held together with solder. They are surrounded by a hard, glass cover, polymer EVA sheet and a sp...
The Solyndra Company, founded in 2005 by Christian Gronet, designed, manufactured, and sold a unique type of solar panels. They were termed “solar photovoltaic (PV) systems” and were designed for large, flat to low sloped commercial building roofs. The panels were designed to have the best performance when mounted horizontally and to be installed very close together so that they covered a much higher percentage of the roof top thus producing more electricity than the typical flat panel solar panels by comparison. This was created through the production by absorbing light from all directions including indirect and reflected light as well as direct sunlight when combined with a white roof. This was due to the design of having rolled its copper indium gallium selenite or CIGS into a cylindrical shape. Each tube had 40 of them in each 1-meter-by-2-meter panel (Solyndra, 2008).
Lof, George. “Solar Energy: An Infinite Source of Clean Energy.” Annals of the American Academy of Political and Social Science. Vol 410:52
4. An engine performs 5000 Joules of work in 20 seconds. What is its power output in kilowatts and in
Wilhelm Hallwachs discovered that combining copper and cuprous oxide produced a photosensitive material in 1904. In the next year, Albert Einstein completed his work on the photoelectric effect and presented his paper on it. However, it was William G. Bailley of Carnegie Steel who created the present basic design of the solar panel consisting of copper coils and an insulated box. The period after the Second World War saw increased demand for solar power as energy needs went up and supplies could not keep up. There was an explosion of passive solar buildings in the country and that spurred more investments into the solar industry. It was at Bell Labs that the silicon photovoltaic cell was developed by Daryl Chapin, Calvin Fuller, and Gerald Pearson. It was the first cell that stored enough energy to run contemporary electric
Although Solar Energy is a flexible source of where energy could be directly or indirectly converted into forms of energy, it’s still not perfect. With its inefficiency, scientists are trying to find alternative solution to store solar cells for as long as possible. The main process of capturing solar energy happens at the nanoscale. With solar cells, it gets more efficient the tinier it gets. The converting rate of solar energy is equally price competitive as fossil fuel, with a dollar per watt of solar energy. With the help of nanotechnology, it could help raise solar energy conversion efficiency and help lower costs making it the ultimate method of raw energy conversion. To make sure the process of generating energy is kept at a low cost and energy output...
Rotman, David. "Finding a Solar Solution." Technology Review 2 (2012): 48-51. Print. 22 November 2014.
The unsustainable nature of fossil fuels as an energy source, from the point of view of future availability and environmental impact, has spurred an interest in diversification of energy sources, with particular interest in renewable energy. The photovoltaic (PV) industry is a player...
Lewis, N. S., 2005. Basic Research Needs for Solar Energy Utilization. Argonne National Laboratory: Renee M. Nault.
Solar is a viable alternative energy source with solar panels becoming more affordable and more efficiently designed.
How Efficient is Solar Energy Technology? Engineering Challenges. n. d. a. d. a. d. d. 8 April 2014. http://www.engineeringchallenges.org/cms/8996/9082.aspx>. How do Nuclear Plants Work?”