Solar Cells theory

The consumption of the products grew enormously and therefore it is not surprising that we characterise today society as a consumption society. Nevertheless, it has become evident at the end of the 20th century that the philosophy of human rogress that has manifested itself in a huge production and consumption of goods has a negative side too. It has been recognized that a massive consumption of fossil fuels in order to fulfil the present energy demands has a negative impact on the environment.
The deterioration of environment is a clear warning that the present realization of human progress has its limitations. The emerging international environmental consciousness was formulated in a concept of a sustainable human progress. The sustainable human progress is defined as: ” to ensure that it sustainable development) meets the needs of the present without compromising the ability of future generations to meet their own needs”l . A new challenge has emerged at the end of the 20th century that represents a search for and a utilization of new and sustainable energy sources.
The urge of this challenge is underlined by limited resources of the fossil fuels on the Earth and increasing demand for energy production. This is the reason why the attention is turning to the renewable energy sources. Energy is an essence of any human activity. When we are interested in how he human civilization has been producing and using energy, we can describe it in terms of an energy system. The main characteristics of the energy system are: the population, the total consumption of energy, and the sources and forms of energy that people use.

The energy system at the beginning of the 21st century is characterised by six billion people that live on the Earth and the total energy consumption of approximately 1. 3 x 1010 kW. World Commission on Environment and Development (WCED), Our Common Future, Oxford/New York: Oxford University Press (1987). 1. 2 Primary energy sources Figure 1. 1 presents an overview of the present primary energy sources 2. The primary energy sources can be divided in two groups. The first group includes those energy sources that will be exhausted by exploiting them.
These energy sources are called the depleting energy sources and they are the fossil fuels and nuclear energy. The fossil fuels and nuclear power are the main source of energy in todays energy system and they supply 78% of the energy demand. Under the assumption that the population of mankind does not change drastically and it consumes energy at the urrent level, the fossil fuel reserves will be exhausted within 320 years and the nuclear energy within 260 years.

Order a unique copy of this paper
(550 words)

Approximate price: $22

Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Order your essay today and save 25% with the discount code: COCONUTPlace Order
+