Morrisons Plumbing Services

The Changing Climate

Environmental issues, sustainability and renewable energy are subjects barely mentioned let alone discussed, in mainstream broadcasting and writing only 10 years ago but have become almost everyday items of news and consideration.

Sustainability statements, increased energy efficiency, new building regulations, energy audits and renewable technologies are issues that are increasingly occupying the minds of government, local authorities and housing associations.

Even some builders are recognising that business as usual is not an option. Consumer interest has also been aroused and continues to increase rapidly.

Why is this happening now? These concepts have been around for years

A few years ago scientists reported an increase in the so called greenhouse gases carbon dioxide and methane in the earth's atmosphere. They predicted that this would result in major changes in climate. The increase in greenhouse gas levels was attributed to the increasing demand for energy and the resultant increase in use of fossil fuels.

Although the existence of global warming caused by greenhouse gases has been subject to some dispute, it is now generally acknowledged to be a real phenomenon. Changes in weather patterns are seen as part of a real trend and not simply variations within the normal historical pattern.

Climate change conference involving governments have been held in Rio and Kyoto resulting in Agenda 21, a commitment by states to achieve a more sustainable pattern of development for this century. The UK is committed to reduce carbon emissions by 20% by the year 2010. A target of 10% of all UK electricity supplies to be generated from renewable energy technologies by the same year has also been set.

But these targets are likely to be just the beginning of a new focus on measures to slow down climate change. In 2002, the Royal commission on Environmental Pollution recommended to the UK Government that the UK should aim to reduce emissions of carbon dioxide by 60% by 2050. There is likely to be a huge increase in the use of renewable energy technologies in the UK in order to work towards this sort of target.

The increase in oil prices intensifies the focus on efforts to stimulate the use of renewable energy.

The sun is by far the most abundant source of energy available on earth. Energy arriving at the earth's surface
By way of solar radiation over a period of 40 minutes is the equivalent of the power used by the entire population of the earth in one year.

The sun is the source of nearly all our energy supplies. The difference between renewable and non-renewable sources is a matter of time scale and geological opportunity.

Fossil fuels (non-renewable) are reservoirs of stored solar energy laid down over millions of years and modified by great geological upheaval.

Renewable energies cover energies derived almost instantaneously from solar radiation to those generated over a period of one or two generations. Renewable energy sources encompass:

Solar Energy is its direct conversion into electricity by photovoltaic solar cells and into heat when absorbed by a dark object.

Solar Technology broadly falls into three categories:

• Photovoltaic's: Direct conversion of solar radiation into electricity.
• Passive solar design: Absorption of solar energy directly into a building to reduce the energy required for space heating. This includes conservatories and south facing atria to collect the energy and circulate the hot air mostly without fans.
• Active solar heating: This always involves a discrete solar collector mounted in such away as to gather the radiation Mostly the heat produced will be used for Domestic hot water or swimming pool heating.

It is the active solar heating, also called solar water heating or domestic solar hot water that we are going to consider

A well designed solar water heating system installed in a family house which previously used an electric immersion heater to heat water can save in excess of half a tonne of carbon dioxide emissions per Annam.

If installed on a large scale, Therefore, solar water heating could on its own make a major contribution toward the UK reducing greenhouse gas emissions.

For the general public, solar water heating is the most practicable and effective way in which they can use and enjoy renewable energy in their own homes. People with solar systems in their houses can literally see (in those cases where there is a digital read out on there system controller) and feel (in hot water) the benefits of the technology.

Market research confirms that those house holds who over the years have invested in solar water heating systems are very happy with their systems, which they find to be reliable and to make a major contribution to their water heating energy needs.

Public awareness of the need to safeguard the environment is growing. More and more people are willing to make purchases which limit the damage inflicted on the environment this, potentially, creates a public more willing to use solar water heating.

If you are one of them. I would be very interested in knowing. I am very interested in your feedback. Please let me know by giving me a comment on the "Contact Us Page"

Thank you