Louis Gelinas

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Louis Gelinas
Posted over 1 year ago
Elon Musk: The mind behind Tesla, SpaceX, SolarCity ...
Thanks Marco, read that one too! but also read this Wiki page: http://en.wikipedia.org/wiki/World_energy_consumption and several other as well as a few university's opinions. My point here is there are no 2 numbers that match and as you can see, they very by several factors. If you and the numbers you are quoting are correct then GREAT! But, I cannot verify that data consistently and I am a bit pessimistic. One thing I did find rather consistent is that the 1366w/m2 is the mid day peek (with the sun directly overhead) and that an average over the day of 650 (about half) is typically used in calculations. Also about 30% of that energy is reflected back to space. Not that that makes a big difference with your numbers, but again I cannot accept your numbers as fact at this time, TOO many discrepancies throughout the web. Your picture is nice but has no value unless the numbers can be validated. Lets work backwards: 500,000km2= 500,000,000,000m2 X 700w/m2(average throughout the day) = 350TWh X 8760 = 3,066,000TW annually At 22% efficiency of commercial PVC's that is 674,520TWh annually for your 500,000km2 **Does not account for the reflected energy (30%), clouds and possibly many other factors. This looks good for your case and I will look at this some more! So my search continues as there is really no definitive answer. Don't get upset with me for being stubborn, I am doing research ... and I may find in the end that you were correct or I may find otherwise. Thanks for the continued comments, they are helpful.
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Louis Gelinas
Posted over 1 year ago
Elon Musk: The mind behind Tesla, SpaceX, SolarCity ...
Found some new numbers about solar energy and global energy consumption. Please correct these figures and calculations if they are also in error. I am arguing this point because I had stumbled upon a paper at one time that discredited solar (trying to find it) and I am interested in truly determining its viability. In 2008, total worldwide energy consumption was 474 exajoules (474×1018 J=132,000 TWh). This is equivalent to an average (hourly) power use of 15 terawatts (1.504×1013 W).[1] The annual potential for renewable energy is: solar energy 1575 EJ (438,000 TWh) Okay, both these figures are ANNUAL TWh values; consumption = 132,000TWh and Solar energy = 438,000TWh. So, if we exclude 71% of the Earths surface from the total solar energy, we get 127,200TWh as an ANNUAL potential solar energy income if we cover ALL THE LAND of the world. That falls short of our ANNUAL consumption. Granted, the consumption figure includes all energy sources. Anyhow, Thanks for the enlightenment, your time and efforts. I will look deeper and further my understanding.
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Louis Gelinas
Posted over 1 year ago
Can God be defined?
http://www.buddhanet.net/e-learning/budethics.htm Buddhism Rules. What I presented twice now is an answer. You obviously do not understand the fundamentals of English speech if you do not see an answer in my text. Therefore: I will not continue a conversation with someone that does not speak my language. The fundamentals of communications do not exist here. Bye bye!
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Louis Gelinas
Posted over 1 year ago
Can God be defined?
I disagree. Your question was: "Can God be defined? Or in other words : What is God? Answer: God is an invention of man to control man (just like I said the first time). That is an answer, whether it is the answer you wanted or not it is still a valid answer that satisfies the question and just like the converse view, it can neither be proven nor disproved. There is tons of historic evidence to support this view in that almost all conflict is as a result of god differences (different sides trying to control others in the name of their gods and by the rules their god represents). If you are looking for a religious definition you won't get one from me, I stopped believing in imaginary creatures before I learned to walk. There is plenty of proof that gods are a means of controlling people. Every religion (god doctrine) I have ever been exposed to has a set of "rules" to which you must adhere, because if I don't ... "I am a very bad boy and I will be punished". If it was not "man's" purpose to control through gods, then there would not be rules. It is entirely possible to create a deity that does not impose laws or rules, but I have never heard of one. I don't care to hear your preaching, I am only answering a question and not interested in how some fictitious thing can save me. There are no "messages of gods" they are words of man to deceive and control ... Do you believe in God? Then you have fallen pray to the controlling doctrines of a hand full of writers and generations of misinterpretation! This is my opinion, no gods involved and no rules .... You are free to have your own opinions.
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Louis Gelinas
Posted over 1 year ago
Elon Musk: The mind behind Tesla, SpaceX, SolarCity ...
So tell me exactly what the difference is between a "second stage" of a rocket and a Skylon cargo with its own engine. We assembled ISS and skylab and MIR in space, I think we got a handle on assembly in space. My theoretical tug could be as few as 1 piece but 2 would be perfect, 1 for cargo and engine and the second for fuel tanks. That sounds pretty basic to me. I thought you people here on TED were open thinkers and not so close minded. Where is your sense of innovation? Where would Elon be if he thought like you? The harvested resources would come from asteroids or the moon etc. and brought to Earth orbit, far cheaper (less energy) than lifting from Earths gravity well.
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Louis Gelinas
Posted over 1 year ago
Elon Musk: The mind behind Tesla, SpaceX, SolarCity ...
What prohibits Skylon from lifting a "space tug" that could initially be fueled by subsequent Skylon flights and eventually from resources harvested in space? Why must one system "do it all"? The "space tug" could then do the work of moving from LEO to GTO and beyond.
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Louis Gelinas
Posted over 1 year ago
Elon Musk: The mind behind Tesla, SpaceX, SolarCity ...
Okay, let us look at the US as an example: 9.9million square km and about 18% arable ... don't want to cover that: 7.9Mkm2 or 7.9trillion sq meters X (1300W X .22) = 2,260TWh but keep in mind that you only get this output during daylight hours. The US used 25, 775TWh in 2010 your short on land by a factor of 10and another factor of at least 2 for night time. All this assumes that you cover all the forests and all the mountains and all the wetlands etc. etc. etc. It ain't gonna happen! *Notes: 1300Watts is the energy delivered by the sun to 1meter square at the surface of the Earth, .22 is the 22% efficiency of commercial solar technology. keep in mind that the 1300Watts is optimal and you only get that when the sun is directly overhead, angular diffusion comes into play at all other times. I apologize for my math error above. Even so, I do not think that covering .2% of the land is any better for the environment than any of the other options available for power generation.
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Louis Gelinas
Posted over 1 year ago
What do you like or dislike about Elon Musk's Ted Talk?
Elon is wrong about three things, at least, in his talk: 1) fossil fuels. Though we could run out, we can make as much of it as we want through bio-fuels. 2) Vertical takeoff and landing ... especially a rocket is asking for trouble. a much more viable plan is that of: Skylon by Reaction Engines LTD out of the UK. It is a far superior option to the reusable space craft design and implementation. 3) 1300watts/square meter is the maximum you could achieve with solar at 100% efficient. we are currently at about 22% on commercial technology. You do the math, we do not have enough surface area available to provide our global power needs with solar. Keep in mind that the average location gets less than 12hours of sun a day.