A Background In Solar Training
February 27, 2010 by Jason Kendall
Filed under Technology
In a nutshell, \’Green Energy\’ utilises natural resources such as sunlight, wind, tides and geothermal heat to provide our daily energy requirement. They\’re all considered naturally able to replenish – and thereby \’Green\’. It is easy to think that we may be travelling back in time when we think of items such as wind power and windmills. Generally, this is the result of using up to date ideas, specifically those that are planet friendly and eco-efficient.
The home can use a range of new ideas to help with energy usage – including Solar Thermal and Solar Water Heating Collectors. To gain electricity from roof panels you would need solar electrical panels (PV\’s). Another key element is that of Biomass Energy, which relates to Stoves and Boilers burning Wood, Fuel and Pellets. Of course, then there is the heating from the Sun – often just called Ground Source Heat Pumps. Finally, we have two of the most traditional forms of energy generation that have gone through some resurgence over the last few years; these being Wind Power, Wind Turbines and Hydropower (including Water Wheels.)
Thermal Solar Energy – This technology is based around two core types of system. First, we have Solar Water Heating Collectors, which absorb energy from the Sun and transfer this into hot water. Then we have the work of the Photovoltaic Heat Collectors, often called Solar Electrical Panels – which transform solar radiation into electricity. Typically, these panels are found on roofs – and need to be away from any light blocks such as trees, chimneys and other buildings.
Within Solar Energy overall, Solar Water Power is most commonly used in the UK. Solar Water heating systems are extremely important – and can provide over half of the hot water needs for houses within the UK. The typical cost for installation ranges from 500-1500 pounds for a DIY system, all the way through to 2-5k for a professional fit.
Systems Utilising Biomass Energy: This term encompasses all forms of natural products – such as plant and animal material. It is extremely useful – in that it can produce a range of power sources, including heat and electricity. The ability to generate electricity is one of the UK\’s main green strengths – as it has one of the larger Biomass legacies within Europe. One of the main factors of this style of energy is the result without the impact on C02. With a new tree being planted as each is felled, you can see how the C02 produced during heating is minimised – and why the system is deemed sustainable.
By the growth of Short Rotation Crops (SRC), the UK is able to maximise the \’Energy Crops\’ return overall. Perennial grasses are also responsible for large quantities of dry matter. Municipal and Agricultural waste products are both little known, but essential materials to this field. Under normal agricultural activity, agricultural waste is a natural by-product. Whereas Municipal Waste is derived from wood or food – and can be used for biomass energy.
Geo-Thermal Energy Technology: Used in the generation of both warm water and electricity, this energy mainly comes from the Sun and heats the Earth. Using the ground temperature of around 12 degrees in the UK – we can both heat and cool buildings. Although heat pumps require energy to function, their rate of return is superb – being a four-fold benefit over the energy put in. Heat source pump energy can go one step further (by gaining a 100 percent return) if the energy to power them comes from items such as wind turbines or solar electrical panels.
Wind Energy Systems: Wind Energy as a sustainable source of energy has been going on for millennia. However, in more recent times there\’s been the option to recover the energy for its own sake – and deliver this either to a home unit or to the local power grid. The ability to utilise wind generation is considered to be greatest in the UK. 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. Electricity can be produced from as little as 2p per kWh, but generally comes in somewhere between 2-10p per kWh. Recovery of the cost involved is somewhere between 6-9 months.
Lastly, we have a discipline that the UK does well – namely Hydropower. Energy creation from moving water is very old – although it is now being done in new ways. It is this type of energy production that could meet 2 percent of all the UK\’s demand.
Using a turbine, a Hydropower system can transform the energy of water into other forms. The important thing is that, without having to rely on water storage, the turbines can generate electricity. \’Micro-Hydro\’ however, uses the dam and sluice systems that have been made redundant by the larger national distributions. Although a lesser known form of electricity output, this process could supply 200mW of UK demand. Installing systems like this could cost between 200 pounds and 3k per kW of energy created.
The demand on \’Green Energy\’ continues to develop – in light of the energy demands worldwide. The UK is very well placed to provide most of the schemes set out above, and the UK domestic market again is one of the key beneficiaries of this technology.
It is the drive for installations in the domestic sector that looks to favour jobs such as plumbers and electricians. It is the political view of this type of energy generation that results in grants and financial aid becoming ever-more prevalent. It is important to gain the correct qualifications to install these items. You could consider either plumbing or electrical training programs that highlight green installation.
Written by Scott Edwards. Visit Solar Energy Courses or www.electricaltraininginfo.co.uk/SolarEnergyTraining.html.




