why marine generators more expensive?
547583
Water + Electricity = Bad News\n\nSealing electronics and connectors is difficult and expensive.
1020514
Well, they do, but you really need to remember to take a lot of these alternative feul source claims with a grain of salt.  Don't get me wrong, I'm always on the lookout for alternative energy sources myself but you really need to remember that in the two examples you've quoted, there is a great deal of scandal and controversy over the fact that the people who own the patents are making a fortune selling devices that take in more energy then they produce...  Which makes no sense to me.\n\nBoth of your examples imply that there is free energy available from water (or that water is used as a fuel) but water is not a fuel in either case.  It's the hydrogen that makes up two parts of the H2O that is the fuel and... remember this part, I'm going to capitalize it since it's so important... IT COSTS YOU MORE ELECTRICITY TO SPLIT THE HYDROGEN, THEN THE AMOUNT OF ELECTRICITY PRODUCED FROM THE HYDROGEN.  The only actual claims from either product I've been able to find about cost is from the cost of the water, not the cost of turning the water to HHO or "Browns Gas" as it has been called, and don't get me started on the difficulty of actually storing that gas.  Sure, the energy producing reaction turns HHO back into water, but guess what happens when you apply a match to this gas...\n\nI checked out the website for magnegas, and it presents a lot of papers (from people who have nothing to do with magnegas) listed in accredited scientific journals... but why do you suppose the paper on magnegas isn't published in any of those journals?  Hmmmm?  The most valid argument I've heard FOR magnegas in this context dealt with the fact that the makers of such are businessmen with a right to protect their product...\n\nding ding ding ding!!!!!  Hear the bells going off?  Businessmen are in the market to make money, and business is not expected or regulated in any way to have any sort of scientific integrity... Or for that matter any moral obligation towards any goal wether it be consumer satisfaction or finding a way to cut energy costs.\n\nOkay, so I'm only an amateur when it comes to science, I actually have to read what other people say when it comes to the scientific data published on these particular fuel sources, but I've studied con artists all my life and the most basic con is to offer something for nothing.\n\nSome people can give you free services legitimately, like websites.  They usually make money from outside advertisers, but when the person comes to your door offering you this "free" fuel source, you just need to pay $6500 for his generator (and don't forget, you'll be paying for the electricity to run this generator) that should be the first clue that something is wrong here.\n\nBefore I close this, let me reiterate...  I WANT a cheaper, cleaner alternative fuel source.  I use solar power and composting here at my home and I'm looking for more.  I just can't afford to be taken by those who prey upon the worlds desire for cheap fuel.\n\nHope this helps\nDuckie
707125
Thereare tons look under tidal turbines. Here is a site that should help you out. http://www.freeenergynews.com/Directory/Tidal/index.html
979674
Mate this question is very open ended.\nBig fast powerful?\nSmall slow economical"\nPetrol?\nDiesel?\nSingle?\nTwin?\n\nI recently brought a 12m (38') Cougarcat from Bermagui (Southern NSW Coast) to Brisbane a distance of 600 NM. The vessel was powered by two TAMD63 6.3 Litre turbo Volvo Diesels. The vessel burned about 80 litres per hour. Used 2700 litres of fuel. At an average price of $1.65 per litre for diesel, it cost $4400 in fuel to do the trip.\n\nThis was a big relatively fast charter boat. Even at 29' There is a huge difference in fuel burn between a two cylinder diesel in a sail boat using 4 litres per hour and two petrol mercruisers using 120 litres per hour. So it is impossible to answer your question at all until you have some better data.\n\nOne thing to think about would be a Yacht. I must stress though, make sure you learn a lot about sailing both in a theoretical and practical sense before undertaking a journey of this magnitude. I have been driving rescue boats for almost 10 years, and I am still not ready to take on a journey like that one.
56359
One reason is Clark Foam, the largest supplier of foam blanks for surfboards closed. The cost of complying with strict EPA laws was too costly for them to continue. Now many of the blanks are being shipped from China or Australia. The cost rises because of shipping and cost to keep the environment safe. Many boards are also being made of epoxy resin which raises the price of the board considerably.
1014269
If you're just getting back in then you may have missed the "tackle revolution " so to speak. Years ago top quality tackle was expensive because of the materials and manufacturing processes. Trust me, nowadays these processes are much cheaper and this reflects in the market. You can get great performance rods at a snip of the prices they used to be. A lot of tackle shops do some great rod/reel combos, giving a discount and usually chucking in a few bits & bobs as well. So, don't go chucking your money away just yet, have a look around and you might be impressed, then you'll have a bit of extra cash to buy other items.
881769
zodiac , its what the coast guards use, extremely thick rubber, and extremely hard to flip that boat over, they are usually more ont he expensive side but are worth it, go to like a west marine store they will have them, or go to there website- www.westmarine.com    youll see them on there
602130
This happened so long ago to suggest there should have been a standard is funny.  The frequency has more to do with the speed of the turbine and the number of poles on the generator.  Early US generation was actually 25Hz.  The larger the frequency the smaller the transformers and motors are, but also the higher the losses (inductive reactance is proportional to frequency).  So there isn't necessarily a perfect frequency to use.
783316
I am not sure if there are safer or just more reliable.  They have no brushes compared to a DC generator.  They use diodes instead.
709483
I can be expensive, depending on how much you want.  It usually runs about 2.3-2.4g/dollar.  The problem is most companies only sell it in bulk quantities.  You're looking at close to $200 for a bulk purchase of 450g.  It's not worth it.
197817
To answer your primary question, it just needs to be less expensive than fossil fuels...oil in particular.\n\n1.  Very few "direct" renewable sources are available non-stop.  A few would be tidal power, geothermal power and hydroelectric power.  There are many "indirect" sources, such as biofuels (ethanol, biodiesel, methane) which are the process of extracting energy from materials.\n\n2. Nothing is really practical (at this point) to compete.  Oil is still too cheap.\n\n3. Storage either in liquid fuel form or conversion to electricity offers the two easiest ways to move large amounts of energy.\n\n4. There's many viable technologies available today, but they are under continuous refinement to make them better, more efficient, less costy, and ultimately, more competitive\n\n5. This one is always fun.  Wind and hydroelectric don't pollute, but one is blamed for killing migratory birds and the other is hated for destroying habitats surrounding rivers.  Both offer the most promise as the next best source of energy compared to fossil fuels.\n\n6. Well, this depends on whether the consumer is in an energy rich or energy poor area.  If you live in an area where there's ample sun, good wind, and/or rivers you can dam up, then you're living close to where you can produce it.  If you can't produce enough energy from the sources immediately available to you, then you will either need to conserve more or import it.\n\n7. Politicians are likely only going to back solutions that prove to be overwhelmingly beneficial to their constituents.  You will get corn belt pols that back ethanol for the obvious positive economic impact that it will have on their areas.   Likewise, wind in areas that it could prove beneficial.\n\nThere is no one magic bullet for every energy need, that needs to be understood.  Some sources will win over others, based on the application and its availability.  But until oil gets more expensive (like over $100 per barrel) then most alternative sources just simply can't economically compete with today's renewable harnessing technology.
637864
That's a very complicated question. It costs about $5 to remove a barrel of oil from the ground in many parts of the Middle East, though not all. And that doesn't include the cost of keeping the region stable, which (as you may have noticed) is rather significant these days. In Canada you can get oil from the oil sands for around $15-25/barrel, which does include the cost of equipment.\n\nTidal power (your turbines) are cool, but expensive - in the range of 70-80/barrel. \n\nThere's much more data. If you want a scary article, try the second source below. If you want an optimistic view, try the third source.
686527
There are many ways to generate hydrogen outside electrolysis. Steam reforming, methane reforming, propane reforming, etc... Coastal countries may appear to have an advantage but you cannot have a fair comparison of supply and demand.  Consider the following:\n1. Many, many, many countries have access to coastal water, thus competition would be extremely fierce\n2. Countries will be more than self-sufficient and may "sell" excess product at a very low cost.\n3. Rivers, streams, rainwater etc... is available to more countries in the world than petroleum to many. \n \nI would not worry about it, depleting the sea is way way way way off, and besides, using H2 as fuel means that emission is....water. And no, the roads are not going to be slippery from algae (sorry, but I have heard a statement like that in the past)\n\nEver considered that we may come up with the technology to recover and re-use the water emission? Thus less filling up at your local Shell H2 station? \n\nI hope I was able to answer it for you in a objective manner
865400
Get some power generators.
1171490
So far, there's not enough demand to warrent the extra cost of developing alternative energy sources.  In order to stop using oil (for power) we will need to find cheaper ways of getting alternative energy or become much more motivated to do so.
274409
Battleships are very expensive, I think they cost like 50 Billion dollars, We lost like 300 of them
566770
I don't know, but if you find one, let me know so I can move there.  I wish to integrate all of these into my new home but the cost is unbelievable.  The wind turbines will cost 20k and the solar panels around 30k.  I haven't even begun to look into the waste system yet.  Electric companies only buy and sell electricity and service the delivery equipment.  Look at the logo on the sides of their trucks...they are all the same logo, just a different name.  What a wonderful world.  haha