global warming
Your Questions About Sustainable Energy Without The Hot Air
Ken asks…
Where is harder to survive..?
Northern Canada/Russia (with lots of cold and snow) or a desert in Nevada?
Assume that there is no countries or cities around, you are the only human in the world and you have to survive by yourself. I am talking about lifetime sustained survival. Not just survive until you get out kind of thing.
PS: I didn’t use a desert in Africa like sahara because obviously there is absolutely 0 chance of sustainable human life.
admin answers:
The Sahara desert has been home to thousands of people for thousands of years. So has the Namib desert and the Kalahari desert where the bushmen have hunted very skillfully for many generations and they eat well.
The Nevada desert can feed you too if you find the skills to get the food it harbours.
Learn some biology. Then you can eat. Learn geology and you can find water. And oil.
The driest desert in the world is the Atacama. It’s beautiful. I’ve been twice. It’s got places where no rain has fallen for more than four hundred years.
But it hasn’t got the driest air in the world.
That’s in Antarctica where water is frozen out of the air and where scientific instruments, especially for infra red measurements which get ruined by water vapour in the air absorbing infra red, are stationed in the scientific research stations at Ross Island and around the South Pole.
It’s easy to look it up. ..Antarctic Research Stations.
The driest air in the world lays over a huge sheet of ice and snow…frozen water.
Cold places give you water but more importantly they demand more in supplies than hot places. It takes more energy and more materials to heat things than to cool them.
Without enough heat you’re soon dead. Providing it and keeping it is costly in materials and clothing..
Deserts get cold at night, even the Sahara. You get a break from the heat and bright Sun.
You can burn camel dung or other dung and dried grasses to get enough heat for cooking. That’s all the heat you need.
Move when it’s cooler in the morning and evening and get shade under a high tent or in the shadow of rocks during the hottest part of the day.
You can cross the Sahara with a lighter load than for crossing Siberia.
Both places you need wildlife to live on or take your own animals. Move to where they can eat so you can keep them alive.
The reindeer herders in the far north of Finland do that, where a warm night in winter is -20C.
Reindeer provide milk and meat, furs for clothing and shoes, tents and sleeping mats, and bone for knives and ornaments.
Sami people have been living in the far north for more than two thousand years
http://norskfolke.museum.no/en/Stories/Set-1/Sami-baptismal-boots/ .. .
Http://www.suite101.com/content/the-sami-of-the-north-a222034 . . . .
In the Sahara camels and goats and sometimes sheep provide the milk and meat, and give wool for cloth to make clothing and tents and bedding rolls, and leather for shoes.
Nomads move to where the grazing is best, in the Gobi desert, and in the Sahara and Namib deserts.
In both cold and hot places you can trap birds and small animals.
Hares and arctic foxes in the far north…or lizards and snakes and the few small mammals that live in the desert..
Many cold places have rivers with fish, and by the coast the sea provides food as well….seaweeds, molluscs, fish and seals.
Desert or frozen tundra…you can live in both and thousands do.
In desert you can still get water.
Hang a fine net to collect the dew. Some plants do that.
Dew collects on the hairy leaves and stems overnight in desert air and provides water for birds and small animals. Be up early enough or it’s gone down animals throats or into the plant or back up into the sky.
That’s where the net idea came from….hairy plants that collect water from dew.
Nets are also used to collect water from fog in remote mountains,and in deserts eg in Chile.
Http://news.nationalgeographic.com/news/2001/11/1101_TVdesertbeetle.html . . . . . .
You can dig condensation pits or condense water from plants.
Http://www.wikihow.com/Make-Water-in-the-Desert . . .. ..
You can dig into the desert where the signs tell you water lays underneath. When it’s close enough to the surface wind-blown seeds take root and you get an oasis.
Thousands of people have lived in deserts and frozen tundra for thousands of years, long before modern equipment existed like expensive water reservoirs for backpacks instead of far more useful and versatile water bottles which keep Arabian nomads alive in the fierce desert heat but are too simple for ‘must have the latest’ techy walkers.
Learn to live where you are and then you can live. Generations long past past did that quite well enough for the current populations to be there……
Have fun
Desert walks….
Http://answers.yahoo.com/question/index?qid=20100704125838AAOUFkW . . . . . . .
Mandy asks…
So why isn’t nuclear power being developed if global warming is such a threat?
Sustainable Development Commission statement on nuclear power: http://www.sd-commission.org.uk/presslist.php/51/nuclear-power-wont-fix-it
Further to my question on Nuclear Power (yes or no) many AGW proponents pointed out that they were in favour of it, or at least had no serious objections.
But if that’s at all representative, and if AGW is such a threat, why isn’t nuclear power being actively pursued? Take the UK, pretty much all ‘Green’ groups vehemently oppose it. The government is being advised on it’s energy policy by a commission which it set up and appointed Jonathan Porritt to head (ex-Greenpeace anti-nuclear campaigner).
It’s obvious that – for the short and even medium term – renewables and energy saving won’t cut it. See the calculations at www.withouthotair.com
I ask because it seems that both warmists and sceptics seem to agree on nuclear. If that’s at all representative of the views of most people then why aren’t we actually doing something rather than planning another massive conference in some far-flung location?
admin answers:
Because a lot of the people who are in charge of solving global warming are either:
a. Completely ignorant of the fact that wind and solar can’t solve global warming.
B. Heavily influenced by fossil fuel interests that would be hurt if nuclear power took away their market in the process of solving global warming.
B(2). Influenced by the fossil fuel unions who don’t want to lose their power (the workers don’t have much to worry about though, the time it’ll take to switch to nuclear will be more than enough for retraining and a lot of them would probably end up working at a vastly safer nuclear plant anyway).
C. See global warming as a means to force people to use less energy and return to ‘simpler’ times whether the population wants it or not (never mind that most people would choose global warming over what the greens want).
D. Are afraid of losing the votes of the anti-nuclear kooks.
The green groups should not be thought of as environmentalists, for the most part they are urban trendoids who don’t really have a clue about the environment but want to feel good about doing something. There’s also a big focus on appearance for the greens and probably a bit of residual Christian morality making a virtue of sacrifice.
The views you get here probably aren’t representative of the majority of the population although the anti-nuclear movement is in decline, they should be almost gone within the decade.
The scientific community probably hasn’t done enough to tell the public and politicians what the scientific consensus on nuclear power is and why renewable energy isn’t going to be able to do what we need it to.
As for _Sustainable energy without the hot air_, that is probably a bit (or maybe a lot) optimistic for renewables although it covers the UK which has a relatively high population density, other countries might be able to get all their energy from renewables assuming that enough decent energy storage systems could be built (we don’t really have that though, pumped hydro is the best we’ve got but we don’t have enough suitable sites for it).
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Your Questions About Sustainable Energy Solutions
Jenny asks…
What would be an energy chain for wind energy?
I basically know the energy chain, but I want to see what other people have to say. When I say energy chain I mean like mechanical-thermal-electrical- etc.
admin answers:
Energy efficiency and renewable energy are said to be the twin pillars of sustainable energy. Some ways in which sustainable energy has been defined are:
“Effectively, the provision of energy such that it meets the needs of the present without compromising the ability of future generations to meet their own needs. …Sustainable Energy has two key components: renewable energy and energy efficiency.” – Renewable Energy and Efficiency Partnership (British)
“Dynamic harmony between equitable availability of energy-intensive goods and services to all people and the preservation of the earth for future generations.” And, “the solution will lie in finding sustainable energy sources and more efficient means of converting and utilizing energy.”
“Any energy generation, efficiency & conservation source where: Resources are available to enable massive scaling to become a significant portion of energy generation, long term, preferably 100 years..” – Invest, a green technology non-profit organization.
“Energy which is replenishable within a human lifetime and causes no long-term damage to the environment.”
Daniel asks…
What is the solution to global warming if the causes are natural?
If global warming is from natural causes as opposed to human activity, what would be some solutions? Is it any different?
admin answers:
… This may help:
Solutions to Global Warming
Reducing your family’s heat-trapping emissions does not mean forgoing modern conveniences; it means making smart choices and using energy-efficient products, which may require an additional investment up front, but often pay you back in energy savings within a couple of years.
1.The car you drive: the most important personal climate decision.
When you buy your next car, look for the one with the best fuel economy in its class. Each gallon of gas you use is responsible for 25 pounds of heat-trapping gases in the atmosphere. Better gas mileage not only reduces global warming, but will also save you thousands of dollars at the pump over the life of the vehicle. Compare the fuel economy of the cars you’re considering and look for new technologies like hybrid engines.
2.Choose clean power. More than half the electricity in the United States comes from polluting coal-fired power plants. And power plants are the single largest source of heat-trapping gas. None of us can live without electricity, but in some states, you can switch to electricity companies that provide 50 to 100 percent renewable energy
3.Look for Energy Star. When it comes time to replace appliances, look for the Energy Star label on new appliances (refrigerators, freezers, furnaces, air conditioners, and water heaters use the most energy). These items may cost a bit more initially, but the energy savings will pay back the extra investment within a couple of years. Household energy savings really can make a difference: If each household in the United States replaced its existing appliances with the most efficient models available, we would save $15 billion in energy costs and eliminate 175 million tons of heat-trapping gases.
4.Unplug a freezer.
One of the quickest ways to reduce your global warming impact is to unplug the extra refrigerator or freezer you rarely use (except when you need it for holidays and parties). This can reduce the typical family’s carbon dioxide emissions by nearly 10 percent.
5.Get a home energy audit.
Take advantage of the free home energy audits offered by many utilities. Simple measures, such as installing a programmable thermostat to replace your old dial unit or sealing and insulating heating and cooling ducts, can each reduce a typical family’s carbon dioxide emissions by about 5 percent.
6.Light bulbs matter.
If every household in the United States replaced one regular light bulb with an energy-saving model, we could reduce global warming pollution by more than 90 billion pounds over the life of the bulbs; the same as taking 6.3 million cars off the road. So, replace your incandescent bulbs with more efficient compact fluorescents, which now come in all shapes and sizes. You’ll be doing your share to cut back on heat-trapping pollution and you’ll save money on your electric bills and light bulbs.
7.Think before you drive.
If you own more than one vehicle, use the less fuel-efficient one only when you can fill it with passengers. Driving a full minivan may be kinder to the environment than two midsize cars. Whenever possible, join a carpool or take mass transit.
8.Buy good wood.
When buying wood products, check for labels that indicate the source of the timber. Supporting forests that are managed in a sustainable fashion makes sense for biodiversity, and it may make sense for the climate too. Forests that are well managed are more likely to store carbon effectively because more trees are left standing and carbon-storing soils are less disturbed.
9.Plant a tree.
You can also make a difference in your own backyard. Get a group in your neighborhood together and contact your local arborist or urban forester about planting trees on private property and public land. In addition to storing carbon, trees planted in and around urban areas and residences can provide much-needed shade in the summer, reducing energy bills and fossil fuel use.
Naturally Occurring Warming
Volcanic Eruptions
Large volcanic eruptions can throw so much dust into the sky that the dust acts as a shield to solar radiation and causes a cooling trend in the atmosphere. You probably can’t remember such an eruption as they are rare and infrequent occurances.
Sunspots
Changes in the Earth’s solar radiation levels can have some impact on the Earth’s climate. Increased solar activity can cause short-term warming cycles on the Earth.
The Wobbly Earth
As the Earth spins, it does not achieve perfect rotation. It actually wobbles slightly, thus alternately exposing the northern and southern latitudes to more and less solar radiation. This wobble in the Earth’s rotation has been causing changes in the temperature of the atmosphere for many millions of years.
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Your Questions About Sustainable Energy Without The Hot Air
Chris asks…
Are there ways to save energy without unplugging appliances?
admin answers:
I have a HUUUUGE list available at www agua-luna com it’s like 33 pages long and would just spam this whole answer. But here’s a few cut from the list below. If you’d like the entire list feel free to visit www agua-luna com or email me through the site directly and I’ll send you a copy.
Also Agua-Luna com now offers Carbon Offsetting Credits, since our Team of Volunteers is already accomplishing several carbon eliminating projects, we’re now converting the carbon offsets to you. Visit www agua-luna com for a FREE carbon calculator to calculate your carbon footprint for free and more info on carbon credits.
You could also Volunteer with us, planting a tree or working on a Sustainable Renewable Energy Building Project in Mexico with us. Again see www agua-luna com for more info.
I also do some free consulting, there’s more info on the site about that too. Here’s some more ways to help the environment…
Recycle paper, cardboard, newsprint and magazines.
Recycle aluminum cans.
Recycle all batteries.
Recycle and reuse. Roughly 50% of the average person’s trash can be recycled. Don’t forget that hazardous waste like batteries, your printer’s ink cartridges, and cell phones can be recycled too! Find out how and where to recycle in your area. Always buy recycled paper. Just 1 ton of recycled paper saves 17 trees.
Just because your community doesn’t pick up all recyclables on the curb, it doesn’t mean there are not viable alternatives nearby. Check with dry cleaners, supermarkets, manufacturers, your local public works department and civic organizations to find out where recycled goods can be dropped off, at a location near you.
Did you know that just in 1995 alone, recycled toner cartridges kept over 21,000 tons of trash out of landfills? Believe it or not, now you can recycle your printer’s toner cartridges! Every year, Americans throw out enough printer cartridges to stretch from Los Angeles to New York City and back again. Toner cartridges can be recycled, having just as good a performance as an unrecycled cartridge. To recycle your toner cartridges, find a local business that does printer cartridge recycling, or contact the manufacturer of your current toner cartridge and ask about a cartridge recycling program.
Not only should you recycle, but buy products that are recycled. By purchasing these products, you are helping to conserve natural resources, and to protect the environment.
Wash clothes in cold water.
Hot water is unnecessary for most clothes. When needed, use warm water.
Fill your toilet tank.
Put a plastic bottle or two, filled with water and rocks, in your tank to reduce the amount of water used in each flush.
Clean your filters.
Clean the filters of your air-conditioners once a month to improve energy efficiency. While you’re at it, change your car’s filters as recommended in your manual.
Get a low-flow shower head.
Stop at the hardware store on your way home, and get a low-flow shower head. Takes a few minutes to install, and it’ll save gallons of water a day.
Lower your thermostats.
If you use heating, get by with less heat and wear warmer clothes. If you use air-conditioning, get by with less cooling and wear cooler clothes.
If it’s a nice sunny day, hanging clothes only takes a few minutes, and you’re using solar power instead of electricity to do the job. It also makes your clothes last longer.
Turn down your water heater.
Most people have their water heater’s thermostat turned up too high, wasting energy. Turn it down to 130 degrees, saving energy but still hot enough to kill bacteria.
Use CFC light bulbs.
If your light bulb burns out, replace it with a Compact Flourescent bulb (those spiral-looking ones). They’re more expensive, but if you just replace them one at a time, it doesn’t cost much, and the energy savings is great. And as they last longer, over the long run, you’ll save money.
Wash and dry only full loads of laundry and dishes.
Follow your community’s water use restrictions or guidelines.
Install a low-flow shower head.
If you are not looking to change your car just yet there are a number of ways you can be more environmentally friendly and help you save money by conserving fuel.
Lighten your car to reduce weight by not carrying unnecessary items.
Cut your speed and stick to the speed limits
Drive smoothly avoiding heavy accelerating and braking.
When stationary for a long time, switch off the engine.
Closing windows will make the car more efficient by being more aerodynamic. Remove roof bars when not is use also helps.
Make sure your tyres are properly inflated as under inflated tyres cause more resistance.
Where possible, walk, cycle or even use public transport.
If possible lift share to reduce the number of cars on the road.
Try mass transit.
Millions of people use it, and it saves tons of fuel. If you don’t already, give it a try.
Unload your car.
Remove excess weight from your car (such as stuff that might be in the trunk) to reduce the amount of fuel you use.
Walk instead of drive.
You don’t have to do this all the time, but walking the short trip to a store, or to lunch from work, or some other short trip like that, can reduce the amount of fuel you use over the long term, and you shed some fat at the same time. Or at least burn off that morning donut.
Buy a smaller car.
You won’t be able to do this today, probably, but the next time you’re in the market for an automobile, get a smaller and energy-efficient car rather than a big, lumbering one. It’s one of the best things you can do to reduce your fuel consumption.
Inflate your tires.
Many people don’t realize that their tires are under-inflated. Check the recommended pressure for your tires, and fill them up to that pressure. It only takes a few minutes, but it will save you on fuel consumption (a little) and more importantly, make your tires last longer and reduce the rubber that’s worn off your tires.
Get creative with gift-giving. The gift of time, services, or environmentally positive gifts may be more appreciated than disposable goods that are not to the taste or needs of the recipient.
Look into those lifestyle changes you’ve been putting off
Work from home more. Many organisations, when prodded a little, will accept flexible work arrangements where there is no impact to the work that needs to get done.
Use your oven less.
The oven not only uses a lot of energy, it heats up your kitchen, requiring more cooling. Instead, use toaster ovens, crockpots, microwaves, and electric grills when you can. And when you do use your oven, open it less – you lose 25% of the heat every time you open the oven door.
Mend your stuff.
Try not to throw stuff away and buy new stuff if the old stuff can be fixed. Torn clothing? Takes a few minutes to sew up.
Install a water filter.
If you buy a lot of bottled water, use your tap instead. Some places need a filter to make tap water taste drinkable, but they don’t cost much and they can save money, water, and plastic bottles over time.
Unplug appliances.
If you don’t use an appliance several times a day, it’s better to unplug it, as they often use energy even when turned off
Use rechargeable batteries.
Instead of throwing your batteries away all the time, reuse rechargeable batteries. Costs a little more, but cheaper in the long run.
When you’re looking to buy appliances, be sure to research the most energy-efficient ones. They may cost a little more, but they’ll more than make up for that in the long run with lower energy bills.
Buy a smaller home.
The next time you’re home-shopping, instead of buying the McMansion, look for a smaller home that’s big enough to meet your needs comfortably. Reducing the amount of stuff you own is a good way to need less house. It’s cheaper, and requires less energy to heat and cool. And easier to clean at the same time.
Look for energy efficiency.
Use acryllic paint.
Compost.
It’s not hard to set one up (look it up online), and you can save a lot of waste from the landfill and help your garden at the same time
Water grass early in the morning.
Reduces the amount of water you need to keep your grass looking fabulous.
Plant shade trees near your house.
It’ll take awhile before they can make a difference, but shade trees greatly reduce the need to cool a home.
Coat your roof.
This’ll take up an afternoon, but you only have to do it once every few years. And it’ll save you a lot of money and energy in heating and cooling over the long-term, more than making up for the cost of paint.
Avoid fast food.
Instead, eat at home or at a sit-down restaurant. Fast food restaurants are one of the worst polluters of the environment, both in the massive amounts of beef they must raise, in the wasted packaging, and in the energy they use in so many ways. And they’re tremendously unhealthy.
Buy a manual reel mower or electric mower.
If you’re looking for a new lawn mower, and you have a small yard, consider getting a manual one. They’re much advanced from the reel mowers of our grandparents’ generation, much quieter, cheaper, and they save on fuel and pollution. Electric mowers are also quieter and use much less energy.
Clean up.
Hope this helped, feel free to contact me personally if you have any questions if you’d like assistance in making your first self sufficient steps, I’m willing to walk you step by step threw the process. I’ve written several how-to DIY guides available at www agua-luna com on the subject. I also offer online and on-site workshops, seminars and internships to help others help the environment.
Dan Martin
Alterative Energy / Sustainable Consultant, Living 100% on Alternative & Author of How One Simple Yet Incredibly Powerful Resource Is Transforming The Lives of Regular People From All Over The World… In
Lisa asks…
What can we do to avoid further negative impact of global warming?
admin answers:
One important thing we can do is get more people to realize that global warming and climate change is real. It is hard to believe that there are some that can’t see what global warming is doing to the planet and that we can just go on without doing anything to reduce and eliminate it, but there are: http://answers.yahoo.com/question/index;_ylt=AjtSjGqmYUtFD73QACdiNsXsy6IX;_ylv=3?qid=20100522093338AAjOu9z&show=7#profile-info-WcvGeYaoaa
Part of my answer to the problem can be found in my answers to other questions:
Yes, it is real…
I honestly believe “global warming”, now referred to as climate change, is real. From where you and I live, we can see it in longer growing seasons, snow that melts a lot faster, more rain and ice than snow, etc… We can also see local warming trends, called urban “heat islands”. The next time you go shopping, realize that the parking lot that you stand on, on a hot summer day, is a lot hotter than the forest that used to be there before the land was developed by the stores you shop at… Your car is only one of millions and millions of vehicles, cars, planes, etc… That send emissions into the atmosphere that cause more and more heat to be trapped near the earth’s surface – enough for most people to realize that global warming and climate change are indeed real.
With all this said, scientists and many others know that the earth has been on a warming trend naturally for thousands of years, since the last ice age, and scientists also know that the billions of people on earth and our industrial and commercial activities are adding to and perhaps even accelerating this warming.
So, with all this knowledge, we can at least try and reverse this trend before things go out of control on the only planet we have to live on. One thing that has been done already is the phasing out of CFCs in air conditioners and other gadgets so that we do not destroy the ozone layer, the thin layer of gas in the atmosphere that prevents ultraviolet rays from reaching the planet’s surface. Now, we are in the process of finding ways to run our economies without the use of fossil fuels and using alternative energy, so that we do not destroy this world that we have taken so long to build…
No, “global warming” isn’t a government trick. Governments have a vested interest in continuing on as they have by growing their economies and if they can, finding a way to reduce global warming without reducing economic growth…
And
Read about:
1) Going off the “grid”. There is a movement called sustainable living, where you can make an attempt to live on power that you create (hydro-electric – dam generated power, geothermal, solar, wind, etc…) so that you are not dependent on fossil fuels.
2) Driving a Hybrid vehicle. Although it isn’t the final solution, it is a step in the right direction. People I know that drive Priuses and other hybrids just love the fact the their car is helping to reduce pollution, and, they can’t remember that last time they had to fill up their gas tank !
3) Building an Eco friendly “greenhouse” to live in… There are new ways of building houses that make clever use of recycled materials and allow for much larger energy savings…
4) Read up on the subject at the following websites to find out about more or about anything that you can do :
Stop global warming: http://www.care2.com/causes/global-warmi…
Yahoo!’s green page: http://green.yahoo.com/
Yahoo’s green directories: http://dir.yahoo.com/Society_and_Culture…
http://dir.yahoo.com/Society_and_Culture…
http://www.care2.com/greenliving/green-1…
http://www.care2.com/channels/ecoinfo/gl…
http://www.treehugger.com/
http://www.futurefriendly.com/Home.aspx
http://everygreenthing.net/
and,
those are just a few of my thoughts on the subject, you’re more than welcome to read my other answers that I’ve posted to this topic…
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Your Questions About Sustainable Energy Solutions
Mark asks…
Why are there no good suggestions for mitigating CO2 levels?
Most of the “solutions” to global warming are just methods to tax companies for unspecified projects to reduce global warming. Most of the suggested solutions are merely schemes to make companies pay for being big bad meanies. Why are there very few people with actual intelligent solutions for reducing the CO2 in our atmosphere? Yes, burning less fossil fuels would do that, but if we gave up fossil fuels we would have mass starvation on our hands. I’m all for sustainable alternate forms of energy, but what of other solutions, such as devising ways to absorb any extra CO2 in our atmosphere?
admin answers:
The only solution is to enjoy an atmosphere richer in CO2, which, if it continues will be beneficial for plant life… Which will benefit all life on earth.
The more CO2 there is, the more plants use it. Compared to naturally growing plants, we could have no appreciable effect at all. There’s a lot of them, not many of us.
Michael asks…
How to green power my home?
I am a father of 3 and tired of paying these outrageous energy bills monthly. We pay in the neighbourhood of 450 canadaian and its got to end! I have come to the conclusion I am going to invest in renewable energy solutions for my home. I want to FULLY remove my home from the energy grid.
I need to know exactly what I will need? I understand I need solar panels and batteries, or windgenerator and batteries but, what else? What past the batteries in the system will I need?
admin answers:
Buy a book called the Solar Living Sourcebook…
Http://www.amazon.com/Real-Goods-Solar-Living-Sourcebook-12th/dp/091657105X
that’s a description of it, it’s about $25 but it has everything you need to know from start to finish, plus other topics / methods in sustainability/renewable energy
it’s basically the hornbook for sustainable folks…if they don’t own it then they’ve at least heard of it, i promise you that
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Your Questions About Sustainable Energy Solutions
Lizzie asks…
What Major should I pursue if I want to work with Green Technology?
I want to make new, more efficient, solar panels and develop green or sustainable energy sources in the future. In addition to that, I hope to make it more applicable for commercial use, such as designing a unit based for airplanes. I figure that might require an aeronautics engineering degree, but what degree would you guys recommend for studying green energy technology? Any colleges too? Not just community colleges. THANKS GUYYYYSSS
admin answers:
Hey Brandon, I have to agree with Jeff on the Aeronautics, I have a degree in that now, and I’ve found beyond understanding angle of attack on a wind turbine blade, it isn’t very useful for renewable energy studies.
If it were me, I would get a degree in thermodynamics. It sounds out there, but if you look to the future of alternative energy, that is the most common science involved. We have wood and other biomass fired boilers now that heat homes and domestic hot water, vacuum based solar collectors that use alcohol as a medium to heat water or operate hydronic floor heating units, and so on. All these things are using some kind of thermocycle system and a liquid medium. The future of large scale solar electricity is heading the same direction. The reason is simple efficiency. Solar electric panels today, while very neat, or horribly inefficient because they use only the incoming photons to drive free electrons from silicone wafers. It is very cool, but at 10 to 15 watts per square foot, most of the energy is wasted heating up the panel.
The Germans are working on a wildly new way to harness solar energy to make electricity. They are putting trough collectors in the Sahara Desert that heat oil to hundreds of degrees Celsius. This hot oil is recirculated into large insulated tanks. Then a water to oil heat exchanger is used to boil the water using the superheated oil. There are several advantages to this system, not the least of which is now we can convert over 60% of the incoming energy to electricity instead of 15%, a four fold increase. It took thermodynamics to come up with a radical solution like this. If this experiment works as well as they hope, in 10 years we should see plants like this in the US Southwest.
Geothermal heating is another example of where heating technology is going, and again, it’s the thermodynamacist that can figure this stuff out. Take a closer look at it when you have time. I wish I had a chance to go back and learn some interesting stuff like this, but I’m pretty locked into my career now. We do power our home with the wind and sun by the way, been doing it for 12 years now, it’s a good hobby and great resource, we could sure use some improvements down the road. Good luck Brandon, and take care, Rudydoo
Mark asks…
Why do people want to disprove global warming? What do they have to gain?
I am not going to debate if global warming is happening or not, but shouldnt we be looking to save our environment and rainforest anyway?
Havnt we been in an evironmental crisis since the beginning of the industrial age.?
Ultimatley shouldnt we be looking to move toward more sustainable solutions that dont harm the environment anyway despite global warming….
Isn’t renewable energy our solution to dependency on foreign oil sources and fossil fuel?
How can anyone try to discredit the importance of sustainability, the environment and renewable energy in future societies?
admin answers:
All too true… I think people don’t want to have to “cop” to the results of our actions, change and “be hassled” by doing what might be better for our environment or really just be bothered with any of it.
It seems pretty obvious that we have been destroying our environment everywhere you turn. Regardless if we were causing global warming or not, we still need to stop the destruction of all of the natural habitats of so many other creatures existing on this planet, stop ravaging the lands and using up all of these limited resources that we have and find ways to live and use resources that are replenishable enough to consider nearly limitless.
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