Question

write SA on saving fuel in th environment

Answer 1

Fuel is a natural resource that produces useful energy when it undergoes a chemical or nuclear reaction. Coal, wood, oil, petrol or gas provides energy when burned so we consider them fuel. But as we all know fuel is not man-made and it occurs only naturally so its judicious use is much more needed not for today but for future generation too. We do not need fuel only to run our vehicles only but it needs to run our life and better environment too. Fuel shortages keep occurring in the world from time to time. Most countries have to import fuel to meet their needs.

Fossil fuels like coal and oil and gas are nonrenewable resources. In other words, increasing usage deplete their presence within the earth. So there will come a time when they will no longer be available. The answer is to develop alternative and renewable sources or to use our natural resources judiciously. In spite of the development of non-conventional energy resources, the general populace is still apprehensive about their use along with natural oil and gas, chiefly because of their low energy value and inconvenience in using them.

We should Save Fuel for Better Environment and Health. Now how saving fuel can lead to a better environment and health well here is the answer. Industrialization, machinery and faster modes of transport have become a way of life and symbols of prosperity. They use a whole lot of oil and gas every day however we are so keenly bent on development that we have closed our eyes to the larger picture that development has no meaning without support from natural reserves and thus they have to undergo a sustainable development and not one at the cost of each other.

Hope it helps!

Answer 2

Fuels are of various types and are used for different purposes. While some of these are used in the process of production, others are used for the purpose transportation. Man relies on fuels for almost all his tasks. Just as every other thing on earth, fuels offer both advantages and disadvantages.

Main Types of Fuels

Fuels have mainly been divided into three different categories. Here is a brief look at these categories:

Solid Fuels

These refer to the solid substances that generate heat and light energy by the process of combustion. There are various solid fuels that are put to different uses. These include firewood, pellets, charcoal, peat, coal, biomass, municipal waste and coke. Most of the solid fuels are more readily available as compared to liquid and gaseous fuels. These are thus cheaper than the other two forms.

On the downside, solid fuels are heavier and thus difficult to transport. They require a good amount of air for proper combustion. The thermal energy of solid fuels is low.

Liquid Fuels

These are combustible molecules that are brought together to generate mechanical energy. Some of the examples of liquid fuels include gasoline, diesel, liquefied petroleum gas and compressed natural gases. Since liquid takes the form of any object it is filled in, liquid fuels are comparatively easier to transport. There is no dust or ash formation on burning these fuels. These are used as internal combustion fuels.

On the downside, liquid fuels are quite expensive. Most of these are highly inflammable and thus the risk involved in storing the same is quite high. They are also known for bad odours.

Gaseous Fuels

These are the fuels available in the gaseous forms. While some of these fuels are freely available in nature such as the natural gases other are derived from different substances. Gaseous fuels generated from solid fuels such as coal and biomass are termed as coal gas and biomass gas. Gases generated from liquid fuel such as petroleum include refinery gases and liquefied petroleum gas.

Gaseous fuels can easily be transferred through pipelines. Unlike liquid and solid fuels, the gaseous fuels do not produce any smoke. These are comparatively cleaner when it comes to handling. They can be burned even with slight air supply.

On the downside these are highly inflammable and hence storing these involves risk. These are quite expensive and also require huge tanks for storage.

Conclusion

While some of the fuels are renewable others are non-renewable yet others take hundreds of years to renew. Thus, we must use these resources carefully. We must avoid wastage of any kind.