CarbonFeet

The electricity generation process involves a number of energy changes, regardless of the initial energy source that is utilised. Traditionally, electricity has been generated using fossil fuels, especially coal. More recently, power stations have started to use gas and oil as their power source. Oil-fired power stations are widespread in oil producing states, for example Indonesia. Gas burns more cleanly and efficiently than coal. It releases half as much carbon dioxide and more than 1000 times less sulphur dioxide per unit of energy.

Burning fossil fuels in power stations

The heat released from burning fossil fuels is used to boil water to produce steam. The steam is heated to really high temperatures in order that it is at high pressure and can turn gigantic steam turbines. Some of the energy of the steam is changed into movement, or kinetic energy, as the turbines spin. The turbines are hooked up to the coils of giant generators. The coils carry a current and act as electromagnets. As the turbines spin, they produce an electric current in the fixed coils surrounding them. This is fed into a power supply grid and carried to wherever in the network it is needed.

Power stations cannot store surplus electricity, so electricity production has to match demand. The power corporations have to judge how much power will be necessary. During times of hot weather, electricity demand may increase as more people use aircon to keep their homes and offices cool. If power firms’ guesses are wrong, folk may experience power cuts.

Power stations aren’t really efficient, and between 50 and 70 % of the energy contained in the ordinary fuel is wasted. Some of the heat energy will heat the encircling air and escape thru the boiler chimneys. The heat energy locked away in the steam cannot all be moved to the spinning turbines. Though the steam is cooler when it leaves matched against when it enters the turbines, it’s still warm. The steam is carried to the cooling towers, where it cools sufficiently to compact back to water. The warm water is then emptied Into a nearby stream or sea, where it can cause thermal (heat) pollution. Hot water holds less oxygen than cold water. The addition of a large amount of luke-warm water can cause animals, such as fish, to ‘suffocate’, as they are unable to extract enough oxygen from the water.

Mixed heat and power plants

Some power stations, called mixed heat and energy generating plants (CHP), attempt to utilize the waste heat. They pipe the waste hot water to surrounding companies and houses to provide heating. There are many such units in Germany, and many small towns are reaping benefits from this cheap energy source. Nonetheless this is only really possible with small and medium-sized power stations that are built close to cities. In numerous countries, especially the United Kingdom, power stations are found in more remote locations and so this power source wouldn’t be as practical as even solar power.

Sarah Green is an environmental campaigner, activist, and strong believer in home made energy. In her spare time, she reports on DIY alternative power plans and kits.

Electricity is commonly generated at a degree that meets demand, as it is tough to store surplus energy. However , it’s actually possible to store smaller amounts of energy for private and domestic uses. Batteries and fuel cells both produce electricity by utilizing electrochemical reactions. Flywheels store up power as they spin.

The battery

A convenient store of energy is the electric cell or battery. These are used each day to power torches, radios, toys and lots of other gizmos. The most common form of battery contains carbon and zinc separated by a solution of ammonium chloride. When the battery is attached to an electric circuit, its stored chemical power is changed into electric energy. The battery continues to supply an electrical current until all the chemicals have reacted with one another. Then, the battery is said to be ‘flat’. Batteries comprising nickel and cadmium (Nicads) can be recharged by passing a tiny electrical current thru the battery for one or two hours. This makes them last much longer.

Flywheels

Space stations use solar panels and fuel cells as their source of energy. This energy is then stored in batteries. These batteries are huge and dear and have to be replaced every five years. But new space stations and satellites may use flywheels to store the energy. These can last twenty years. Flywheels are utilized in engines, but now scientists are planning even more efficient versions. When energy is used to turn a flywheel, the energy is converted to kinetic energy. The flywheel stores the energy mechanically in the shape of kinetic energy. The speedier the flywheel spins, the more energy it stores. This energy can be converted to electricity. The new flywheels will be as tiny as just 15 centimetres across, and made from extremely powerful, yet light-weight, materials. They can spin up to 600,000 times each minute, and can store eight times more energy than a battery of the same mass.

Fuel Cells

It’s possible that in the near future, vehicle engines, batteries in portables and even power stations could be replaced by fuel cells. Fuel cells date back to 1839, but till fairly recently, only the US Nationwide Aeronautics and Space Administration (NASA) employed them.

All fuel cells are energy converters, and work on the same basic principle. They have 2 electrodes divided by an electrolyte, a substance that conducts electricity. A fuel such as hydrogen enters at one electrode and oxygen enters at the other. They go through a reaction, which produces an electric current. When the fuel is hydrogen, the sole waste product is pure water.

Fuel cells have many advantages. They convert energy far more efficiently than standard power sources: for instance, a fuel cell is 2 times as efficient as a car petrol engine and produces nearly no pollution. Furthermore, they don’t contain moving parts, so do not produce any noise or vibration. An operating fuel cell is therefore extraordinarily quiet and doesn’t suffer from wear. But there are a bunch of problems to overcome. Currently, fuel cells are awfully high-priced, though this is due to the fact that only tiny numbers are being manufactured. The price will fall once big quantities are produced. There are problems of reliability with some fuel cells. In addition, some bigger fuel cells have a poor power to weight and volume proportion. This means that for their weight or volume, they produce comparatively small amounts of power.

Sarah Green is an environmental campaigner, activist, and robust disciple of being energy self-sufficient. In her free time, she reports on alternative DIY energy blueprints and kits, for example the ben ford homemade energy download.

Considering the fact that the holes in the Earth’s ozone layer are focused around the poles, not even close to where the majority of people are living, it would appear that the ozone layer depletion is a concern that does not demand an immediate resolution. The truth is, the deterioration of the Earth’s defense against radiation has ramifications that extend across the Earth. The ozone layer’s depletion leads to numerous environment problems that in the end affect each and every inhabitant on the planet.

The sun emits ultraviolet radiation that needs to be filtered out. Specifically, it’s the UVB rays that the ozone layer keeps from entering our atmosphere. Radiation, in modest amounts, is important. In high amounts, however, it can damage the environment. Too much radiation can cause irreparable damage to the DNA of living organisms. This means that it can cause cancer in both humans and animals.

There are lots of effects of global warming brought on by the ozone layer depletion. For example, the costs of food and the availability of safe and clean water are impacted. As reported by the Intergovernmental Panel on Climate Change or IPCC, the number of areas on the planet experiencing droughts has been gradually growing since the ’70s.

Not only does the increasing amount of ultraviolet light that penetrates the Earth affect animals, it also affects plant life. Some plants may behave differently because their life cycle and ability to create ripe fruit is affected by the presence of ultraviolet light. The survival rate of microscopic plant life in the oceans, however, may drastically go down as a result of increased exposure to ultraviolet light.

Other negative effects of global warming reveal themselves in more immediate and striking ways. For example, based on the IPCC, the tropical cyclone activity in the North Atlantic has become more extreme as opposed to tropical cyclone activity in the 1970s. The storms these days are more extreme than the ones a few decades ago. Consequently, numerous homes and buildings constructed to withstand storms commonplace previously are buckling under the storms these days. A number of these structures cannot last, leading to massive damages and even death.

The storms are awfully hard to forecast, thereby making it also hard to determine if costly improvements made to enable buildings to resist the storms are worth carrying out. Undoubtedly, the ozone layer depletion leads to environmental problems that are diverse and possibly life-threatening. Unless a serious, concentrated action is undertaken, the problems brought on by the depletion of the ozone layer will simply intensify and will be felt by everyone in the world.

Everybody plays a part in global warming via the production of gases. Similarly, everybody is impacted by global warming. It really is vital that every one of us take action to help the planet. We can implement modifications in our everyday life that immediately profit the environment, as well as lobby our governments to do something.

The sooner we act, the sooner we’ll be able to limit the ozone layer depletion, as well as the damage it causes to the environment. We also will be able to take the appropriate measures for the effects of climate change that can’t be prevented anymore.

Russ Evans is concerned with the environmental issues connected with ozone layer depletion in addition to global warming information which he believes are of interest to absolutely everyone