Digital Cameras and Lenses

It is the use of tides or wind to deliver our daily energy needs that form ‘Green Energy’. They are thought to be ‘Green’ due to the fact that they are easily restored and natural. Often by going back in time we see the value of wind power and windmills as modern energy sources. Regardless of this, we are mainly talking about using modern techniques to offer planet friendly and eco-efficient solutions.

Solar Thermal and Solar Water Heating Collectors are examples of what can be used in the house as part of renewable energy technologies. Following on it is items such as the Photovoltaic Panels (PV’s) that develop electricity through suitable roof-panels. Another key element is that of Biomass Energy, which relates to Stoves and Boilers burning Wood, Fuel and Pellets. There is the old heat from the Sun now known as Ground Source Heat Pumps. When we think about Wind Power and Hydropower we have two of the more habitual forms of energy generation.

Looking at each area in turn we will consider some of the skills needed by those who want to train in this field. If you currently work in the areas of Electrical, Gas and Plumbing then this could be appealing to you. Certainly by getting information from many sources we can look at the career potential for Electricians, Gas and Plumbers. We’ve also provided links and adverts from several training providers, so book-mark this page (CTRL-D) and you can come back later to review other options.

Thermal Energy Systems: Often called Solar Energy, this is fact based on two types of solar panels each using different ideas to get their results. Making hot water from solar energy is the first stage and is known as Solar Water Heating Collection. Secondly, Photovoltaic heat collectors – often simply referred to as Solar Electrical Panels – which transform the solar radiation into electricity. Across the board, Solar Panels should be mounted on a south facing roof, at an angle of 30 degrees away from horizontal, and to some extent away from blocking trees, surrounding buildings and chimneys.

For the UK this is often considered the most popular form of ‘Green Energy’. With the ability to provide almost half the annual need for hot water in the house then Solar Water heating systems is very important. The cost of fitting depends on whether you do it yourself – 500 to 1500 pounds or whether you get a professional fit in which it will cost between 2-5k overall.

Biomass Energy Systems – Includes all natural forms derived from plant and animal products such as wood, straw, poultry litter and ‘energy crops’. It’s the ability of this power source to generate diverse forms of energy such as heat and electricity that makes this so adaptable. It is a useful point to make that the UK is one of the major producers of Biomass fuels within Europe. It should be borne in mind that the whole process is designed to produce energy without an impact on CO2. That being said the process where each tree felled is replaced by another helps to reduce the overall effect on C02 as a part of energy produced.

A process titles Short Rotation Coppice (SRC) such as Willow and Poplar are used to meet the demands of such ‘Energy Crops’. Perennial grasses are also responsible for large quantities of dry matter. Of equal importance, although maybe less well known are Municipal and Agricultural Waste. Using normal agricultural activity, Agricultural waste is a natural by-product. Another biomass element is that called municipal waste and this comes from wood or food goods.

Systems Using Geo-Thermal Energy – This is primarily the heating of the Earth (mainly from the sun) and can be utilised in electricity and warm water production. Using the ground temperature of around 12 degrees in the UK we can both heat and cool buildings. Whilst these heat pumps require energy to operate their rate of return is excellent being four units kept for every one unit of energy used. The energy generated by a heat source pump can in fact be considered 100 percent renewable, if the power to operate the pump comes from solar electrical panels or a wind turbine.

Wind Energy Based Systems – The use of wind as a source of energy has been going on for thousands of years, especially in milling grain and pumping water. That aside the ability to generate energy and transfer this onto homes or the local grid has been a relatively new option. In fact, the UK has the largest wind resource within Europe. Potentially we can produce 10 percent of our annual energy needs through wind power although at present within the UK we still only use 1 percent. Although electricity is still being produced from between 2-10 p per kWh it could be generated from as little as 2p per kWh. Due to this we are looking at 6-9 months in total to cover the costs.

Finally, we have Hydropower; an area in which the UK does well within Europe. Just like a thousand years ago we are looking utilising energy from water. That aside it is fair to say that some 2 percent of the UK’s electrical load comes from this source.

It is a Hydropower process, using a turbine that can convert the energy from one for into another. It is by either water drops or Natural River runs that turbines can work through this process ‘Micro-Hydro’ however avoids this system killed off by the larger national distribution methods and plans to use the outdated sluices and dams. This smaller form of electrical output has been recently reviewed and could allocate some 200MW of capacity to the UK system. The expected cost of installing a system such as this would be between 200 pounds and 3k per kW of output.

It is down to the worldwide energy requirements that sees the growth in ‘Green Energy’. Considering this schemes laid out above the UK domestic market appears to be one of the core beneficiaries of this technology.

With the bulk of development work in the domestic field both the Plumbers and Electricians are set to capitalise in this area. You can now get a range of grants to support the growth of renewable energy ideas within the European market. Equally important is the role of gaining qualifications to install items that we have talked about. By mixing green training with those of electrical or plumbing you could cover both angles.

(C) Scott Edwards 2009. Visit Solar Training or Click HERE.

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