• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13

Power generation

Extracts from this document...


Analysis at work:
Producing Electricity


Oil is a liquid fossil fuel and is formed from layers and layers of buried animals and plants that have been under a lot of heat and pressure over a long time. Oil is a non-renewable resource as it cannot be produced on human time frame.  

Oil is used for many things; it’s used for transportation, heating purposes, fuel for electricity generating plants. Fuel is found underground reservoirs.

The production of electricity from oil begins with the extraction of oil and ends with the oil burning in boilers and turbines at power plants. Crude oil is removed from the ground by drilling deep wells and pumping it up to the surface.

The crude oil is then moved to a refinery (refineries remove a portion of the impurities in the oil, e.g. metals) where it is refined into a number of fuel products: kerosene, gasoline, liquefied petroleum gas

Then this crude oil is moved to power plants by trains, trucks, pipelines or ship. Many methods are used at the power plants to generate electricity from oil. One of the methods is to produce steam by burning the oil in the boilers which is used by a steam turbine to generate electricity.

...read more.





The input of fuel provides energy. The fuel is burnt so therefore producing electricity.

P1= output of boiler, input of turbine

P2=Output of turbine, input of generator

I have done the calculation below to work out the output of the boiler and the input of the generator, overall P2 is the power generation of the turbines. Power generation from P2 is used as the input in working out the efficiency of the generator. The power generation that the generator gives out is known simply as output.

P2= Output

          %      x 100

P2= 2400

        90.09 x100

P2=2664(2dp) mw

The calculation above shows the working out for the power generation of the turbines.  

P1=       P2

70x 100    


  1. x 100

P1=3805.71(2dp) mw

Input=     P1

              60   x 100

Input= 3805.71

              60         x 100

Input= 6342.85 mw

I have worked out all the above to calculate the overall efficiency of the oil power station.

Overall efficiency (%)=    output

                                        Input x 100

Overall efficiency= 63.06% (2dp)

I will explain in detail of what each part of the power plant does:


This is a picture of a boiler; this is where the fuel is burnt to boil the water. The water that is purified is pumped through a pipe into the boiler. An average size of the boiler is approximately 130 ft in height and 50 ft in width.

...read more.



The image above is of a turbine.

Complex calculation:

Efficiency= Useful energy given out by the device                                                           Energy put into it                          x 100%



10 metres (length of       blade)

Total output of 1 wind turbine:

Volume      =      Depth      x      Surface area

                            6m/s    x              x?

Surface area = Лr2 (3.14 x 102) = 314

Volume = 6m/s x 314

Volume = 1884 m/s

Calculation for mass of blade:




m= e x v

m= 1.4 x 1884

mass of blade= 2637.6 kg

Calculation for kinetic energy:

Ke=kinetic energy



Ke= ½ mv2

Ke= 0.5 x 2637.6 x 62

Kinetic energy= 47476.8 joules











...read more.

This student written piece of work is one of many that can be found in our AS and A Level Electrical & Thermal Physics section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Here's what a star student thought of this essay

4 star(s)

Response to the question

The candidate starts this essay by describing oil, though they do so well, the purpose of the essay is not clear. When writing an introduction you need to state the topic that you will be writing about so that the ...

Read full review

Response to the question

The candidate starts this essay by describing oil, though they do so well, the purpose of the essay is not clear. When writing an introduction you need to state the topic that you will be writing about so that the premise of your essay is clear. You should also try to engage the reader, you can do this by providing historical background or by stating a relevant fact or quote that you find interesting. That said, the candidate gives a very explicit response overall, they have included a great deal of information and they have taken the time to put together a table and a flow chart, these can be useful tools for make the information more interesting to read.

Level of analysis

It is clear from the level of detail provided that the candidate has taken the time to research this topic, which is always a good idea. Its shows interest and enthusiasm in you subject and makes your essay more enjoyable to read. In addition to this the candidate has also included a bibliography, which I recommend, it is important to provide links to any web pages you have used, it prevents you being accused of plagiarism and it shows the preparation you have undergone in order to write your essay. Furthermore the candidate has accurately shown the necessary calculations in order to work power and efficiency, this shows a good understanding of the mathematics involved in physics principles. Finally the candidate gives a reasonable evaluation, they have provide a personal response which helps bring your work to a close. However you should end your essay by summarising your key points as this helps bring together any lose ends. In addition to this the candidates essay ends with calculations, it would more appropriate to end with a brief sentence explaining how this backs up your point.

Quality of writing

This piece of work is well written, the candidate provides accurate information relating to the topic and they have used suitable scientific terms. In addition to this the information is carefully laid out and is essay is easy to follow, furthermore there are no issues with spelling or grammar.

Did you find this review helpful? Join our team of reviewers and help other students learn

Reviewed by pictureperfect 24/07/2012

Read less
Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Electrical & Thermal Physics essays

  1. Marked by a teacher

    Determining Avogadro's Number Lab

    4 star(s)

    Thus, the average current after 20 minutes is 0.95 A �10.5%. Time: Time = 60 seconds x 10 minutes Time = 600 seconds Percent uncertainty of time = Percent uncertainty of time � 0.833% The percent uncertainty for time is approximately 0.833%.

  2. Investigating the E.m.f and Internal Resistance of 2 cells on different circuit Structures.

    The graphs showed a very clear trend which all follow the line of best fir so that was very pleasing How accurate is the data - testing the inaccuracies I will create a another graph for voltage against current to find the e.m.f and internal resistance but this time I

  1. The aim of the experiment is to verify the maximum power theorem and investigate ...

    Secondly, the spring balance was exactly in horizontal position. The component of the applied force supports the motion of the blocks. In this way, we cannot study the effect of the normal reaction force on the friction. To do away with this error, except we can hold the spring balance

  2. Using an LDR to detect the intensity of plane polarised light allowed through a ...

    An oscilloscope would also meet this requirement of a high resistance, but will also make it significantly harder to read results. Resistor The other decision that I had to make about the circuit was the inclusion of the variable resistor (which I am using a resistance substitution box to replicate).

  1. Investigating the relationship between pressure, volume and temperature of a gas

    and (II) should be investigated together. 1. The apparatus was set up according to the figure below: 2. The initial set of readings was taken from the thermometer, Bourdon gauge and meter rule. 3. The hot plate and the magnetic stirrer were switched on.

  2. Single Phase Transformer (Experiment) Report.

    the single impedance Z1 comprises * A primary circuit resistance R1, which is the sum of the primary and referred secondary winding resistances. * A primary circuit reactance X1, which is the sum of the primary and referred secondary leakage reactances.

  1. An experiment to measure the specific heat capacity of water

    Theory We know that E = m s ?T but E = VxQ = V x (I x t) So, V I t = m s ?T Inserting our figures gives S = V I t = (9.93 x 1.89 x 930.39)

  2. Free essay

    The Relationship Between the Input and Output of an LDR

    For example, when the light source was 6cm away from the LDR the results were a potential difference of 41.1(UNITS?), 4.9 and 24.0. There is evidently a massive range of results. However, once the average is found the trendline fits the graph with only one slightly anomalous result: when the

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work