Alternative Energy in Ireland

The Irish are currently pursuing energy independence and the further development of their robust economy through the implementation of research and development into alternative energy sources. At the time of this writing, nearly 90% of Ireland's energy needs are met through importation—the highest level of foreign product dependence in the nation's entire history. This is a very precarious situation to be in, and the need for developing alternative energy sources in Ireland is sharply perceived. Ireland also seeks to conserve and rejuvenate its naturally beautiful environment and to clean up its atmosphere through the implementation of alternative energy supplies. The European Union has mandated a reduction in sulphuric and nitric oxide emissions for all member nations. Green energy is needed to meet these objectives. Hydroelectric power has been utilized in Ireland in some areas since the 1930s and has been very effective; however, more of it needs to be installed. Ireland also needs to harness the wave power of the Atlantic Ocean, which on its west coast is a potential energy supply that the nation has in great store.

Ireland actually has the potential to become an energy exporter, rather than a nation so heavily dependent on energy importation. This energy potential resides in Ireland's substantial wind, ocean wave, and biomass-producing alternative energy potentials. Ireland could become a supplier of ocean wave-produced electricity and biomass-fueled energy to continental Europe and, as they say, “make a killing”. At the present time, Ireland is most closely focused on reaching the point where it can produce 15% of the nation's electricity through wind farms, which the government has set as a national objective to be reached by 2010. But universities, research institutes, and government personnel in Ireland have been saying that the development of ocean wave energy technology would be a true driving force for the nation's economy and one which would greatly help to make Ireland energy independent. A test site for developing wave ocean energy has been established in Ireland, less than two miles off the coast of An Spideal in County Galway Bay. This experimental ocean wave harnessing site is known as “Wavebob”. The most energetic waves in the world are located off the West coast of Ireland, says Ireland's Marine Institute CEO Dr. Peter Heffernan. The technology to harness the power of the ocean is only just emerging and Ireland has the chance to become a market leader in this sector. David Taylor, CEO of the Sustainable Energy Initiative,or SEI, tells us that SEI is committed to innovation in the renewable energy sector. Wave energy is a promising new renewable energy resource which could one day make a significant contribution to Ireland's electricity generation mix thereby further reducing our reliance on fossil fuels.

Padraig Walshe, the president of the Irish Farmers Association, tells us that with the closure of the sugar beet industry, an increasing amount of Irish land resources will become available for alternative uses, including bioenergy production. Today, renewable energy sources meet only 2% of Ireland’s total energy consumption. From a farming perspective, growing energy crops will only have a viable future if they provide an economic return on investment and labour, and if the prospect of this return is secure into the future. Currently the return from energy crops is marginal and is hampering the development of the industry. Biomass energies need to be further researched by Ireland.

Read More......

Alternative Energy from the Ocean

Ocean Thermal Energy Conversion (OTEC) was conceived of by the French engineer Jacques D'Arsonval in 1881. However, at the time of this writing the Natural Energy Laboratory of Hawaii is home to the only operating experimental OTEC plant on the face of the earth. OTEC is a potential alternative energy source that needs to be funded and explored much more than it presently is. The great hurdle to get over with OTEC implementation on a wide and practically useful level is cost. It is difficult to get the costs down to a reasonable level because of the processes presently utilized to drive OTEC. Ocean thermal energy would be very clean burning and not add pollutants into the air. However, as it presently would need to be set up with our current technologies, OTEC plants would have the capacity for disrupting and perhaps damaging the local environment.

There are three kinds of OTEC.

“Closed Cycle OTEC” uses a low-boiling point liquid such as, for example, propane to act as an intermediate fluid. The OTEC plant pumps the warm sea water into the reaction chamber and boils the intermediate fluid. This results in the intermediate fluid's vapor pushing the turbine of the engine, which thus generates electricity. The vapor is then cooled down by putting in cold sea water.

“Open Cycle OTEC” is not that different from closed cycling, except in the Open Cycle there is no intermediate fluid. The sea water itself is the driver of the turbine engine in this OTEC format. Warm sea water found on the surface of the ocean is turned into a low-pressure vapor under the constraint of a vacuum. The low-pressure vapor is released in a focused area and it has the power to drive the turbine. To cool down the vapor and create desalinated water for human consumption, the deeper ocean's cold waters are added to the vapor after it has generated sufficient electricity.

“Hybrid Cycle OTEC” is really just a theory for the time being. It seeks to describe the way that we could make maximum usage of the thermal energy of the ocean's waters. There are actually two sub-theories to the theory of Hybrid Cycling. The first involves using a closed cycling to generate electricity. This electricity is in turn used to create the vacuum environment needed for open cycling. The second component is the integration of two open cyclings such that twice the amount of desalinated, potable water is created that with just one open cycle.

In addition to being used for producing electricity, a closed cycle OTEC plant can be utilized for treating chemicals. OTEC plants, both open cycling and close cycling kinds, are also able to be utilized for pumping up cold deep sea water which can then be used for refrigeration and air conditioning. Furthermore, during the moderation period when the sea water is surrounding the plant, the enclosed are can be used for mariculture and aquaculture projects such as fish farming. There is clearly quite an array of products and services that we could derive from this alternative energy source.

Read More......

Alternative Energy Development in Japan

Japan is a densely populated country, and that makes the Japanese market more difficult compared with other markets. If we utilize the possibilities of near-shore installations or even offshore installations in the future, that will give us the possibility of continued use of wind energy. If we go offshore, it's more expensive because the construction of foundations is expensive. But often the wind is stronger offshore, and that can offset the higher costs. We're getting more and more competitive with our equipment. The price—if you measure it per kilowatt-hour produced—is going lower, due to the fact that turbines are getting more efficient. So we're creating increased interest in wind energy. If you compare it to other renewable energy sources, wind is by far the most competitive today. If we're able to utilize sites close to the sea or at sea with good wind machines, then the price per kilowatt-hour is competitive against other sources of energy, go the words of Svend Sigaard, who happens to be president and CEO of the world's largest wind turbine maker, Vestas wind systems out of Denmark. Vestas is heavily involved in investments of capital into helping Japan expand its wind turbine power generating capacity. It is seeking to get offshore installations put into place in a nation that it says is ready for the fruits of investment into alternative energy research and development.

The Japanese know that they cannot become subservient to the energy supply dictates of foreign nations—World War II taught them that, as the US decimated their oil supply lines and crippled their military machine. They need to produce energy of their own, and they being an isolated island nation with few natural resources that are conducive to energy production as it is defined now are very open to foreign investment and foreign development as well as the prospect of technological innovation that can make them independent. Allowing corporations such as Vestas to get the nation running on more wind-produced energy is a step in the right direction for the Japanese people.

The production of energy through what is known as microhydoelectric power plants has also been catching on in Japan. Japan has a myriad rivers and mountain streams, and these are ideally suited places for the putting up of microhydroelectric power plants, which are defined by the New Energy and Industrial Technology Development Organization as power plants run by water which have a maximum output of 100 kilowatts or less. By comparison, “minihydroelectric” power plants can put out up to 1000 kilowatts of electrical energy.

In Japan, the small-scaled mini- and micro-hydroelectric power plants have been regarded for a considerable time as being suitable for creating electricity in mountainous regions, but they have through refinement come to be regarded as excellent for Japanese cities as well. Kawasaki City Waterworks, Japan Natural Energy Company, and Tokyo Electric Power Company have all been involved in the development of small-scale hydroelectric power plants within Japanese cities.

Read More......