by kublikhan » Thu 28 Feb 2008, 04:57:51
$this->bbcode_second_pass_quote('MonteQuest', 'Y')our failure to grasp the concepts is not my problem.Efforts to try an sustain a population in severe overshoot is a fools' errand.Renewable energy capture will cause far more damage on the scale required.
I grasp the concepts thank you. But you failed to answer my questions. Namely:
1. Is it your belief that renewables cause more damage then fossil fuels, assuming equal scales?
2. What form of damage do you foresee renewables causing(on the scale required)? Dead insects? Glare from solar panels?
3. If the impact of renewables(on the scale required) is several orders of magnitude smaller than the impact of fossil fuels, why berate renewables so fiercely when even a small reduction in the percentage of carbon emissions will have a much larger effect?
$this->bbcode_second_pass_quote('TonyPrep', 'H')mm. You seem to be saying that if I have concerns but don't have the time or resources to explore them myself, then I should not raise the concerns. Pardon me, but that's nonsense. Besides, these are people who are proposing a grand plan that could take a huge amount of extra resources, in an attempt to eventually replace resources currently used. Are you saying that the author of these proposals don't have the same same responsibility that you are placing on me, to examine the consequences and requirements thoroughly? I find that logic badly flawed. I suppose I could just say "hmm, nice idea" and leave it at that. But this is my society too.
It is far easier to poke holes in something then it is to come up with a concrete plan of action. To me you come off as a naysayer. I wonder if this paper was 60 pages long describing precisely the effects it would have on the local ecology if you would still find something to poke holes in. For example, researchers find generally positive ecological impact of renewables(by displacing fossil fuels) in their study's. By these results seem to be unsatisfactory to you, you want to know what kind of hidden damage renewables are doing. if the research did not find it, what more needs to be done?
"A significant advantage of the use of renewable energy systems," say the researchers, "is that they are environmentally friendly because overall they result in lower dangerous pollutant emissions, this and one other major factor, they are essentially inexhaustible."
http://www.sciencedaily.com/releases/20 ... 153419.htmAs usual, you provide no sources Tony and I found Monty's source wanting, so I am yet again forced to try and find a source to support your concerns. I found this one, not quite as thorough as the limits to sustainability paper, but gives more chilling effects then dead insects and glare from solar panels.
$this->bbcode_second_pass_quote('', ' ') Among the renewable resources, only in solar power do we find the potential for an energy source capable of supplying more energy than is used.5
Suppose that of the 4.5x1017 kWh per annum that is used by the earth to evaporate water from the oceans we were to acquire just 0.1% or 4.5x1014 kWh per annum. Dividing by the hours in the year gives a continuous yield of 2.90x1010 kW. This would supply 2.4 kW to 12.1 billion people.6
This translates to roughly the amount of energy used today by the average American available to over twelve billion people. Since this is greater than the estimated carrying capacity of the Earth, this would be enough energy to supply the entire planet regardless of the population.
Unfortunately, at this scale, the production of solar energy would have some unpredictable negative environmental effects. If all the solar collectors were placed in one or just a few areas, they would probably have large effects on the local environment, and possibly have large effects on the world environment. Everything from changes in local rain conditions to another Ice Age has been predicted as a result of producing solar energy on this scale. The problem lies in the change of temperature and humidity near a solar panel; if the energy producing panels are kept non-centralized, they should not create the same local, mass temperature change that could have such bad effects on the environment.
Of all the energy sources available, solar has perhaps the most promise. Numerically, it is capable of producing the raw power required to satisfy the entire planet's energy needs. Environmentally, it is one of the least destructive of all the sources of energy. Practically, it can be adjusted to power nearly everything except transportation with very little adjustment, and even transportation with some modest modifications to the current general system of travel. Clearly, solar energy is a resource of the future.
http://www.ccs.neu.edu/home/feneric/solar.html So the grave ecological damage is "some unpredictable negative environment effects". Somehow I doubt taking .1% of the energy used to evaporate the oceans would lead to an ice age. We are adding far more energy than that right now with global warming. But look at the conclusion reached. Solar has the most promise as the energy resource of the future. Yes Monty, that's on