Showing posts with label solar. Show all posts
Showing posts with label solar. Show all posts

Tuesday, November 2, 2010

Power Generation Via Hydrogen Is Not Taking Off

It is amazing how many will see something new, then run with it to the extreme saying this will change the world. This is true for virtually all non-fossil energy producing systems, but all of them have drawbacks and none have revolutionized the power sector. The two major problems have been high cost and inconstant energy production during the 24 hour period.

Scientists have worked on hydrogen systems for decades and success seems very distant. It is not being accepted for widespread use. Actually, hydrogen is a "byproduct" of energy production. When electricity is generated by any method the excess not used at a point in time is passed through water. It splits in oxygen and hydrogen via electrolysis with the fuel being stored to be used in the future. When hydrogen is recombined with oxygen, electricity is generate. Heat from the process can also be used directly for heating purposes.

As with other environmentally friendly electricity producing methods time will tell if hydrogen is accepted for general use. Perhaps hydrogen can be made in significant quantities from solar and wind generation. It could potentially make for a hybrid system producing electricity 24 hours a day. Until now, governments have been the main source of funding for hydrogen experiments. Apparently, the private sector sees little future in it. For non-fossil energy systems to flourish it is necessary for the community to work together. Unfortunately, individualism is the norm. Perhaps this is why there is very little progress.
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Power Generation Via Hydrogen Is Not Taking Off

It is amazing how many will see something new, then run with it to the extreme saying this will change the world. This is true for virtually all non-fossil energy producing systems, but all of them have drawbacks and none have revolutionized the power sector. The two major problems have been high cost and inconstant energy production during the 24 hour period.

Scientists have worked on hydrogen systems for decades and success seems very distant. It is not being accepted for widespread use. Actually, hydrogen is a "byproduct" of energy production. When electricity is generated by any method the excess not used at a point in time is passed through water. It splits in oxygen and hydrogen via electrolysis with the fuel being stored to be used in the future. When hydrogen is recombined with oxygen, electricity is generate. Heat from the process can also be used directly for heating purposes.

As with other environmentally friendly electricity producing methods time will tell if hydrogen is accepted for general use. Perhaps hydrogen can be made in significant quantities from solar and wind generation. It could potentially make for a hybrid system producing electricity 24 hours a day. Until now, governments have been the main source of funding for hydrogen experiments. Apparently, the private sector sees little future in it. For non-fossil energy systems to flourish it is necessary for the community to work together. Unfortunately, individualism is the norm. Perhaps this is why there is very little progress.
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Sunday, August 22, 2010

New Solar Power Station in Western Australia

Australia goes its own way in lower carbon power generation by opening a solar-diesel power station, the world's first, in Western Australia. Solar panels track the sun during the day. The station is built in a location that holds the record for the most days of maximum temperature. Use of the solar panels will lessen greenhouse gas emissions by 1119 tonnes a year.

the local Aboriginal community if fully supportive of the power plant in the Pilbara. Aboriginals named it Pippunyah, the name of the river nearby. Funding came from the Federal Government in its renewable remote power generation program via the Office of Energy in Western Australia.

It is unfortunate that solar power generation had to be combined with fossil fuel generation. Even getting natural gas there would have been better than diesel. It seems there is no perfect solution to the pollution problem. New systems only seem to meet requirements half way.
. . . . . . . . . . . . . . . . .

New Solar Power Station in Western Australia

Australia goes its own way in lower carbon power generation by opening a solar-diesel power station, the world's first, in Western Australia. Solar panels track the sun during the day. The station is built in a location that holds the record for the most days of maximum temperature. Use of the solar panels will lessen greenhouse gas emissions by 1119 tonnes a year.

the local Aboriginal community if fully supportive of the power plant in the Pilbara. Aboriginals named it Pippunyah, the name of the river nearby. Funding came from the Federal Government in its renewable remote power generation program via the Office of Energy in Western Australia.

It is unfortunate that solar power generation had to be combined with fossil fuel generation. Even getting natural gas there would have been better than diesel. It seems there is no perfect solution to the pollution problem. New systems only seem to meet requirements half way.
. . . . . . . . . . . . . . . . .

Sunday, June 6, 2010

Natural Gas Must Not Be Used as a Substitute for Clean Power Generation

It is proposed that natural gas be used instead of coal for electric power generation. The national climate summit put a deadline of 2012 for this to happen with the dirtiest power station, Hazlewood. Environment Victoria took up the challenge saying that natural gas with renewable energy resources could reduce Hazlewood's pollution by 14.4 million tonnes to just 1.8. Wind generation would gradually replace natural gas.

The claim is exceedingly optimistic. Too much faith is placed in wind generation despite the fact that electricity production by this means has peaked in northern Europe and it still does not make a profit.

Beyond Zero Emissions is even more optimistic. Its plan aims to end Hazlewood's use of coal by 2013.

The future looks good for natural gas production with gas being obtained from coal seams and 20 gas power plants being planned. Natural gas is not really clean though. Indeed, leakage of methane gas occurs. Replacing coal power generation with gas as a temporary measure is a mistake. What is the point of wasting millions of dollars in investment on the premise that something better will come along?

The best way to go in the short term is to build solar thermal power sites alongside existing coal power stations. Note that solar thermal only produces electricity during the day. A final solution will undoubtedly be tidal generation because the moon continues to circle the earth making oceans rise and fall day after day.
. . . . . . . . . . . . . . . . .

Natural Gas Must Not Be Used as a Substitute for Clean Power Generation

It is proposed that natural gas be used instead of coal for electric power generation. The national climate summit put a deadline of 2012 for this to happen with the dirtiest power station, Hazlewood. Environment Victoria took up the challenge saying that natural gas with renewable energy resources could reduce Hazlewood's pollution by 14.4 million tonnes to just 1.8. Wind generation would gradually replace natural gas.

The claim is exceedingly optimistic. Too much faith is placed in wind generation despite the fact that electricity production by this means has peaked in northern Europe and it still does not make a profit.

Beyond Zero Emissions is even more optimistic. Its plan aims to end Hazlewood's use of coal by 2013.

The future looks good for natural gas production with gas being obtained from coal seams and 20 gas power plants being planned. Natural gas is not really clean though. Indeed, leakage of methane gas occurs. Replacing coal power generation with gas as a temporary measure is a mistake. What is the point of wasting millions of dollars in investment on the premise that something better will come along?

The best way to go in the short term is to build solar thermal power sites alongside existing coal power stations. Note that solar thermal only produces electricity during the day. A final solution will undoubtedly be tidal generation because the moon continues to circle the earth making oceans rise and fall day after day.
. . . . . . . . . . . . . . . . .

Thursday, April 15, 2010

Debate Ensues Over the Number of Dwarf Planets

The solar system is full of planets. Australian scientists have found a dozen or so dwarf planets in our small part of the galaxy. Pluto is not alone as a dwarf planet.

The definition of a dwarf is it must be round and be more than 400 kilometers across. This definition is not accepted by everyone. Many say if a body is large enough to be round due to innate gravity then this should be enough. Some objects as small as 200 kilometers in diameter are round.

Some are still upset by Pluto's demotion from Planet. Others say it is not a planet because its orbit is out of kilter with planets. The classification of Pluto as "dwarf" was caused by the discovery of other objects like Pluto. Eris, Makemake and Sedna are similar to Pluto.

Only five dwarf planets are classed as such at the moment. Thousands of other bodies out are just waiting to be classified, If the pressure continues there will probably be more.
. . . . . . . . . . . . . . . .

Debate Ensues Over the Number of Dwarf Planets

The solar system is full of planets. Australian scientists have found a dozen or so dwarf planets in our small part of the galaxy. Pluto is not alone as a dwarf planet.

The definition of a dwarf is it must be round and be more than 400 kilometers across. This definition is not accepted by everyone. Many say if a body is large enough to be round due to innate gravity then this should be enough. Some objects as small as 200 kilometers in diameter are round.

Some are still upset by Pluto's demotion from Planet. Others say it is not a planet because its orbit is out of kilter with planets. The classification of Pluto as "dwarf" was caused by the discovery of other objects like Pluto. Eris, Makemake and Sedna are similar to Pluto.

Only five dwarf planets are classed as such at the moment. Thousands of other bodies out are just waiting to be classified, If the pressure continues there will probably be more.
. . . . . . . . . . . . . . . .