Studying For Solar Courses

It is by using natural resources such as tidal or wind energy – collectively known as ‘Green Energy’ – that we could meet our daily energy needs. 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 range of renewable energy technologies utilised within the home environment includes both Solar Thermal, and Solar Water Heating Collectors. It is equipment such as Photovoltaic Panels (PV’s) that develop electricity through suitable roof-panels. Then there are Stoves that burn Bio-Pellets – which make up the subject commonly known as Biomass Energy. Then we have the ancient energy of the Sun and the heat that comes from it – now called Ground Source Heat Pumps. Lastly, there are two of the more historical forms of energy production – namely Wind Turbines and Hydropower.

Solar Energy Systems: Also known as Solar Energy, this mainly uses two, albeit different types of solar panels to get the desired results. Initially, there is the process of obtaining hot water from the Sun via Solar Water Heating Collectors. Furthermore, there are the Solar Electrical Panels (more correctly known as Photovoltaic heat collectors) which transform solar radiation into electricity. Obviously situated away from blockages such as chimneys etc., these Solar Panels need to be mounted on south facing roofs at an angle of 30 degrees from the horizontal.

In the UK, Solar Water Power is now one of the most sought after forms of Solar Energy. With the ability to provide almost half the annual need for hot water in the house, Solar Water heating systems are very important. The cost of fitting depends on whether you do it yourself (500 to 1500 pounds) or whether you get a professional fitter – in which case it will cost between 2-5k overall.

Biomass Energy Based Systems: Historically, this has come from plants and animals, though nowadays this also includes new genetcially engineered ‘energy crops’. Considering its ability to produce energy in the form of heat and electricity, this type of energy is extremely flexible. Furthermore, within the European Markets, the UK is one of the central producers of Biomass fuels. Considering all this, and the relative lack of C02 produced, makes the whole process highly green overall. Much of the UK wood crop is sustainable, in order to ensure that C02 produced during any heating process is absorbed.

‘Energy Crops’ trees such as Willow and Poplar play a major part in the process – under the banner of Short Rotation Coppice (SRC). Of equal importance is the production of perennial grasses – because of their yield of dry matter. Whilst Agricultural and Municipal waste may be lesser known, they are essential to the whole process. One natural offshoot of agricultural work is Agricultural Waste. Municipal Waste such as food or wood can also be utilised as a biomass product.

Systems Based On Geo-Thermal Energy: 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. Generally, items such as Heat Pumps are thought of as very effective, as they produce four units of energy for every one that is used for generation. A greate return of energy (sometimes almost 100 percent) is produced – because heat source pumps can operate in-line with wind turbines and solar electrical panels.

Wind Energy: The use of wind as a source of energy has been going on for thousands of years, especially in milling grain and pumping water. 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 UK is considered as one of the best sources of wind generation within Europe. It is interesting to note that whilst we can produce 10 percent of our entire power requirement from wind power, at present we only produce 1 percent. Instead of producing electricity at a rate of 2-10p per kWh, we could be generating at 2p per kWh. From this, the estimation of the cost recovery period is around 6-9 months overall.

Finally, we have Hydropower; an area in which the UK does well within Europe. Having said that, the art of using energy from moving water (just like wind power) is very traditional. In total, this could produce something like 2 percent of all electricity required in the UK.

By using a turbine, a Hydropower system can transfer the kinetic energy of moving water into another form. By using a dam or a natural river drop, these turbines do not require water storage. ‘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. A micro-hydro system like this would be expected to cost between 200 and 3,000 pounds per kW of the energy.

The demand on ‘Green Energy’ continues to develop – in light of the energy demands worldwide. The UK remains one of the main beneficiaries of this technology.

With the rise in demand for domestic installations, both Electricians and Plumbers are well placed to take advantage of this technology. With ‘Green Energy’ rising up the political agenda in Europe, a range of financial aids and grants are becoming available. It is important to gain the correct qualifications to install these items. Electrical or plumbing training that incorporates green technology could be very useful for the future.

(C) S. Edwards 2009. Visit Solar Energy Courses or electricaltraininguk.co.uk/Solar-Energy-Training.html.