ok sry for coming again. in case u r the type to read frm the top, pls read my below post first. has lots of info.
anw, there's a reason for writing this new post. i posted the other one liao n den went to read the rest of the posts dat i haven read. n i realised, wad i put in the topics, we hav got some info liao! like the transportation de, n the current zhuang kuang on the use of solar energy, as well as the benefits! well, dat basically helps everyone! hurray!
btw i failed to mention jus now, in our proposal we said we are focusing on transportation, n dats why i put one whole topic under 'focus on use on transportation'. dis one has to be deeply dug out clean cos we are focusing on dat. nvm if u cant understand me -.-
ok i shall stop since i got other stuff to do!!! rmb the dates n stuff!!!
jiayou again!
byebye!
lovelovelove butgotnotime,
jiinnnnnnnnnnnn
Wednesday, May 21, 2008
UPDATES!
here i come again~
hello one and all. we all noe we havent really done anything for our physics except collecting some info. anw, there isnt going to be a report rite? only a presentation frm wad i heard. so ppt presentation, me n yunqi decided on the topics we needed. n here are them. im allocating specific research ideas to yal so dat we fen gong he zuo ok. i will collate everything n put dem into ppt n script. more bout dat later. look at the topics n allocation first.
1) definition and background of solar energy -- Rania
2) how solar energy is derived -- Tongzhen (mostly jus summarising)
3) general uses for solar energy -- Rania
4) focus on use of transportation -- Yunqi
5) Pros and cons of solar energy -- Yunqi, Tongzhen
6) Conclusion (current stats n insights into the future n the like) -- Jiinn
dats like almost all dats going to be in the ppt. ok. for each of the topics rite, u hav to find sufficient info, n den rephrase everything, or as much as u can anw. den u send everyone the paraphrased version, wif the links to the websites or anywhere u find the info frm k. btw pls post smth when u do dat, n paste the links on the post oso, cos im thinking of showing ppl our blog, do yal wan?anw if yal dowan de hua, (n btw i oso think dat nobody will come visit duh) at least got a lot of posts lar, looks nice for a project :)
oh yes, tong, the 2nd point, i think during our original research we each found smth on it, so shud be fairly simple, since almost all the info needed is there oredi i think. so maybe u can jus collate it n paraphrase? can add other useful stuff in oso, of cos.
ill do the ppt n script as i said, but there's bound to be problem rite. anw when i think ive done it den i send to yal to edit and wadeva u wan to do wif it lar. btw pls help think of ways to make the ppt interesting, cos apparently i hav no ideas currently.
ok here's the tentative deadline. for the info, pls try to giv me by, say, the wednesday of the 2nd week? (4th june which is after my bdae hehe)cos dis hols is really quite short, n i really need all the info in order to fill everything in. u can send in earlier lar, of cos. btw since its tentative, i can be soft on dis dateline, until maybe dat week de saturday (7th june), which is the latest ok. so if u think u cannot giv me by dat wednesday, tell me ok, n tell me by which date u can giv me oso, so i noe. theres a reason for dis hurriedness ok. cos rite, i noe for alot of our projects, we all rush at last minute, n we get super stressed out. well, dis is late, but not dat late, so lets try to finish it fast n efficiently ok! so yay lets do our best!
n do rmb to post regularly if possible :)) n jiayou for all the camps, the miscellaneous projects, the courses etc, n most of all, the homework!! boo. but lets try our best :)
ps: dun write absolute crap here since mr ang will be visiting :p abit can lar i think,...(hehehe)
love lots,
jiinn
hello one and all. we all noe we havent really done anything for our physics except collecting some info. anw, there isnt going to be a report rite? only a presentation frm wad i heard. so ppt presentation, me n yunqi decided on the topics we needed. n here are them. im allocating specific research ideas to yal so dat we fen gong he zuo ok. i will collate everything n put dem into ppt n script. more bout dat later. look at the topics n allocation first.
1) definition and background of solar energy -- Rania
2) how solar energy is derived -- Tongzhen (mostly jus summarising)
3) general uses for solar energy -- Rania
4) focus on use of transportation -- Yunqi
5) Pros and cons of solar energy -- Yunqi, Tongzhen
6) Conclusion (current stats n insights into the future n the like) -- Jiinn
dats like almost all dats going to be in the ppt. ok. for each of the topics rite, u hav to find sufficient info, n den rephrase everything, or as much as u can anw. den u send everyone the paraphrased version, wif the links to the websites or anywhere u find the info frm k. btw pls post smth when u do dat, n paste the links on the post oso, cos im thinking of showing ppl our blog, do yal wan?anw if yal dowan de hua, (n btw i oso think dat nobody will come visit duh) at least got a lot of posts lar, looks nice for a project :)
oh yes, tong, the 2nd point, i think during our original research we each found smth on it, so shud be fairly simple, since almost all the info needed is there oredi i think. so maybe u can jus collate it n paraphrase? can add other useful stuff in oso, of cos.
ill do the ppt n script as i said, but there's bound to be problem rite. anw when i think ive done it den i send to yal to edit and wadeva u wan to do wif it lar. btw pls help think of ways to make the ppt interesting, cos apparently i hav no ideas currently.
ok here's the tentative deadline. for the info, pls try to giv me by, say, the wednesday of the 2nd week? (4th june which is after my bdae hehe)cos dis hols is really quite short, n i really need all the info in order to fill everything in. u can send in earlier lar, of cos. btw since its tentative, i can be soft on dis dateline, until maybe dat week de saturday (7th june), which is the latest ok. so if u think u cannot giv me by dat wednesday, tell me ok, n tell me by which date u can giv me oso, so i noe. theres a reason for dis hurriedness ok. cos rite, i noe for alot of our projects, we all rush at last minute, n we get super stressed out. well, dis is late, but not dat late, so lets try to finish it fast n efficiently ok! so yay lets do our best!
n do rmb to post regularly if possible :)) n jiayou for all the camps, the miscellaneous projects, the courses etc, n most of all, the homework!! boo. but lets try our best :)
ps: dun write absolute crap here since mr ang will be visiting :p abit can lar i think,...(hehehe)
love lots,
jiinn
Monday, March 31, 2008
i need to post one more but we have alot of info already!
i shall post anyway -.-
An Introduction to Solar Energy
i shall post anyway -.-
An Introduction to Solar Energy
Of the main types of energy usage, the least suited to solar power is transportation. While large, relatively slow vehicles like ships could power themselves with large onboard solar panels, small constantly turning vehicles like cars could not. The only possible way a car could be completely solar powered would be through the use of battery that was charged by solar power at some stationary point and then later loaded into the car. Electric cars that are partially powered by solar energy are available now, but it is unlikely that solar power will provide the world's transportation costs in the near future.
Solar power has two big advantages over fossil fuels. The first is in the fact that it is renewable; it is never going to run out. The second is its effect on the environment.
While the burning of fossil fuels introduces many harmful pollutants into the atmosphere and contributes to environmental problems like global warming and acid rain, solar energy is completely non-polluting. While many acres of land must be destroyed to feed a fossil fuel energy plant its required fuel, the only land that must be destroyed for a solar energy plant is the land that it stands on. Indeed, if a solar energy system were incorporated into every business and dwelling, no land would have to be destroyed in the name of energy. This ability to decentralize solar energy is something that fossil fuel burning cannot match.
i think the first website ji inn provided us with is very useful - for the physics principal theory part cause it explains what it is made of, how light energy is converted bla blah.
oh and i came across this article in Newsweek and they mentioned now adays more and more ppl are getting environment friendly, partially due to the fact that they want to save more money in the long run. For eg, when u install the solar panels they might be more expensive, but in the long run, it ll save more money cause u dont have to pay so much electrical bills. so does it show that renewable energy is getting more popular? o.0
i think now we have quite a lot of info alr. like what is solar? how is solar panels made and how they work. So here is a website where it like summarizes the benifits of solar energy.
http://www.self.org/shs_benefits.asp
oh and i came across this article in Newsweek and they mentioned now adays more and more ppl are getting environment friendly, partially due to the fact that they want to save more money in the long run. For eg, when u install the solar panels they might be more expensive, but in the long run, it ll save more money cause u dont have to pay so much electrical bills. so does it show that renewable energy is getting more popular? o.0
i think now we have quite a lot of info alr. like what is solar? how is solar panels made and how they work. So here is a website where it like summarizes the benifits of solar energy.
http://www.self.org/shs_benefits.asp
Friday, March 28, 2008
ive arrived wif extra info!
hello everyone once again im here to say hello! ok hey yunqi, about the solar photovoltaic system u hav below, i saw this website that has more detailed explanation.
it provides info about sunlight intensity, talks of what solar panels are made of, how light is converted to electricity, the photoelectric effect and about how solar panels are arranged to make the most of the sunlight!
and i realised, there's actually chemistry involved! haha, to keep yal in suspense, i shall not speak more; go n see for urself! but i haven figured out where's the physics hehe anyway here's the website: http://www.physics.ubc.ca/~outreach/phys420/p420_01/james/solarphysics.htm
yay yay dis is great! but how come i dun see rania??
ohoh, here's another website, but i found a point dat contradicts between the previous article n dis one, n another point dat is proven correct due to it being the same for 2 sources. btw, dis talks about solar panels on satellites alot, so its form of transportation rite? uh, no rite...oops nvm to noe more, enter this website: http://inventors.about.com/od/sstartinventions/a/Solar_Panels.htm
ok here is yet another article about solar panels, talking about the pros n cons. basically the cons are it being too expensive, n the like. n dey speak of how ppl arnd the world are trying to reduce these costs. i think dis might help u noe. here it is: http://environment.about.com/od/renewableenergy/a/solar_power.htm
so yay i think i provided alot of info! whee~ hehe n everyone pls do contribute too! rania! where did u disappear to... oh i shall go to chem now byebye, mr ang! byebye physics!
posted by jiinn! :D
it provides info about sunlight intensity, talks of what solar panels are made of, how light is converted to electricity, the photoelectric effect and about how solar panels are arranged to make the most of the sunlight!
and i realised, there's actually chemistry involved! haha, to keep yal in suspense, i shall not speak more; go n see for urself! but i haven figured out where's the physics hehe anyway here's the website: http://www.physics.ubc.ca/~outreach/phys420/p420_01/james/solarphysics.htm
yay yay dis is great! but how come i dun see rania??
ohoh, here's another website, but i found a point dat contradicts between the previous article n dis one, n another point dat is proven correct due to it being the same for 2 sources. btw, dis talks about solar panels on satellites alot, so its form of transportation rite? uh, no rite...oops nvm to noe more, enter this website: http://inventors.about.com/od/sstartinventions/a/Solar_Panels.htm
ok here is yet another article about solar panels, talking about the pros n cons. basically the cons are it being too expensive, n the like. n dey speak of how ppl arnd the world are trying to reduce these costs. i think dis might help u noe. here it is: http://environment.about.com/od/renewableenergy/a/solar_power.htm
so yay i think i provided alot of info! whee~ hehe n everyone pls do contribute too! rania! where did u disappear to... oh i shall go to chem now byebye, mr ang! byebye physics!
posted by jiinn! :D
Wednesday, March 26, 2008
Please give comments and what you think of solar...
Give comments, and your new understanding of solar.
Think about what we can do to exploit solar, esp. in transportation...
THINKING TIME THINKING TIME THINKING TIME THINKING TIME THINKING TIME
Think about what we can do to exploit solar, esp. in transportation...
THINKING TIME THINKING TIME THINKING TIME THINKING TIME THINKING TIME
What is solar?
When we do this SIA, the initial concept we What is Solar Energy?
Solar energy is the mother of most renewable energies on earth. The sun powers natural cycles on earth like the wind, water flow and plant growth.
But the sun is also such a reliable source of heat and light that we sometimes take it for granted. Generations have used glass and other materials and structures to capture and magnify the sun’s energy and these systems have gradually evolved to form the basis of mature techniques that are used today to harness solar energy.
There are 3 basic approaches used today to gain maximum benefit of solar energy in buildings:
Passive Solar
Active Solar Heating
Solar Photovoltaic (PV) Systems
Passive Solar
Passive Solar Architecture is a building design approach which seeks to:
maximize solar gains in the building (through good orientation and layout, and glazing);
avoid heat losses through ensuring a high level of insulation and air-tightness of the building;
ensure a high degree of comfort by using controlled ventilation and daylighting.
Anyone building a new house or refurbishing extensively an existing house should apply passive solar principles, and reduce their heating requirement by up to 80% at no or little extra-cost.
Today, the most advance form of passive solar design has been translated into the Passive House standard. For more information, go to http://www.passiv.de/.
Download Passive Solar Design – Solar Homes Catch the Sun Download A Buyers’ Guide to Low Energy and Passive HousesDownload Passive homes - Guidelines For The Design And Construction Of Passive House Dwellings In Ireland
Active Solar Heating
Active Solar Heating is one of the primary ways for buildings to use solar energy. This technology uses solar collectors to transform sunlight into heat to provide space and/or water heating. Solar water heating is the most common application of active solar thermal in Europe. A correctly sized solar water heating system can cover 50-60% of your hot water heating requirement with free solar energy.
A solar thermal system providing space and water heating is generally referred to as a solar combisystem. It is generally sized to cover 30 to 40% of the annual heating requirement of a house in Northern Europe. In Ireland, a solar combisystem using air as a heat transfer medium is gaining in popularity. It has the advantage of combining solar heating and ventilation through the same system. It is particularly suitable for low-energy houses.
By 2005, over 3,000 households used a solar heating system in Ireland, compared to about 5 million households in Europe.
Solar Photovoltaic (PV) Systems
‘Photovoltaic’ means electricity from light. In essence, photovoltaic systems use daylight (not necessarily direct sunlight) to convert solar radiation into electricity. The light which shines on the PV cells creates an electric field causing electricity to flow. The greater the intensity of the light, the greater the flow of electricity.
Photovoltaic systems use semiconductor materials to convert solar energy into electricity. This technology is widely used in consumer products such as solar calculators, watches or garden lights, and is increasingly used as a cost-effective solution in Ireland for stand-alone applications where a grid connection is too expensive (e.g. parking meters, caravans or remote holiday homes).
Solar PV can also be used to provide free solar electricity to houses as well as for commercial and industrial applications. Recent developments in regulation mean that it will shortly be possible to connect solar PV systems to the grid, opening up a new era for solar PV in Ireland.should understand is the definition of solar.
Solar energy is the mother of most renewable energies on earth. The sun powers natural cycles on earth like the wind, water flow and plant growth.
But the sun is also such a reliable source of heat and light that we sometimes take it for granted. Generations have used glass and other materials and structures to capture and magnify the sun’s energy and these systems have gradually evolved to form the basis of mature techniques that are used today to harness solar energy.
There are 3 basic approaches used today to gain maximum benefit of solar energy in buildings:
Passive Solar
Active Solar Heating
Solar Photovoltaic (PV) Systems
Passive Solar
Passive Solar Architecture is a building design approach which seeks to:
maximize solar gains in the building (through good orientation and layout, and glazing);
avoid heat losses through ensuring a high level of insulation and air-tightness of the building;
ensure a high degree of comfort by using controlled ventilation and daylighting.
Anyone building a new house or refurbishing extensively an existing house should apply passive solar principles, and reduce their heating requirement by up to 80% at no or little extra-cost.
Today, the most advance form of passive solar design has been translated into the Passive House standard. For more information, go to http://www.passiv.de/.
Download Passive Solar Design – Solar Homes Catch the Sun Download A Buyers’ Guide to Low Energy and Passive HousesDownload Passive homes - Guidelines For The Design And Construction Of Passive House Dwellings In Ireland
Active Solar Heating
Active Solar Heating is one of the primary ways for buildings to use solar energy. This technology uses solar collectors to transform sunlight into heat to provide space and/or water heating. Solar water heating is the most common application of active solar thermal in Europe. A correctly sized solar water heating system can cover 50-60% of your hot water heating requirement with free solar energy.
A solar thermal system providing space and water heating is generally referred to as a solar combisystem. It is generally sized to cover 30 to 40% of the annual heating requirement of a house in Northern Europe. In Ireland, a solar combisystem using air as a heat transfer medium is gaining in popularity. It has the advantage of combining solar heating and ventilation through the same system. It is particularly suitable for low-energy houses.
By 2005, over 3,000 households used a solar heating system in Ireland, compared to about 5 million households in Europe.
Solar Photovoltaic (PV) Systems
‘Photovoltaic’ means electricity from light. In essence, photovoltaic systems use daylight (not necessarily direct sunlight) to convert solar radiation into electricity. The light which shines on the PV cells creates an electric field causing electricity to flow. The greater the intensity of the light, the greater the flow of electricity.
Photovoltaic systems use semiconductor materials to convert solar energy into electricity. This technology is widely used in consumer products such as solar calculators, watches or garden lights, and is increasingly used as a cost-effective solution in Ireland for stand-alone applications where a grid connection is too expensive (e.g. parking meters, caravans or remote holiday homes).
Solar PV can also be used to provide free solar electricity to houses as well as for commercial and industrial applications. Recent developments in regulation mean that it will shortly be possible to connect solar PV systems to the grid, opening up a new era for solar PV in Ireland.should understand is the definition of solar.
Tuesday, March 25, 2008
JI INN ARRIVES HERE TOO...
whee hello everyone! this is a test post as well as self introduction!
hello mr ang im Wong Ji Inn from 309 n my register number is 22. for better reference lar. ok i shall go search for info!! whee~
jiinn<3 physics wahaha
hello mr ang im Wong Ji Inn from 309 n my register number is 22. for better reference lar. ok i shall go search for info!! whee~
jiinn<3 physics wahaha
Monday, March 24, 2008
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