- •Types of engines практикум
- •Передмова
- •Contents
- •Unit 1 the creation of steam engines
- •2. Discuss the following questions with a partner.
- •3. Read the text and find the expressions which mean:
- •The creation of steam engines
- •6. Match the English words with their Ukrainian equivalents.
- •7. Match each word from the text with its synonym.
- •8. Match the words with their definitions.
- •Choose the correct preposition.
- •4. Match the words in column a with the words in column b to form meaningful phrases. Translate them into Ukrainian.
- •5. Fill in the words from the list below. Use each word only once.
- •Read the passage about the steam engine history and choose the correct word.
- •Listen to the text about the Steam Engine invention and tell your group mates what inventors are mentioned in the text.
- •Think of the endings of these sentences, then listen and check.
- •13. Discuss in pairs the meaning of the following phrases in relation to the information from the text:
- •Unit 2 steam engines: developments of the industrial revolution
- •Think of as many words as possible related to the topic “Development of steam engines”. How important were steam engines in the industrial revolution?
- •Study the diagram of James Watt’s pumping engine. How did the separate condenser which he had added to the earlier design make the steam engine more effective?
- •3. Read the text and decide whether the statements that follow are true or false. Steam engines: developments of the industrial revolution
- •4. Match the words in column a with the words in column b to form meaningful phrases. Translate them into Ukrainian.
- •5. Fill in the words from the list below. Use each word only once.
- •6. Match the English phrases with their Ukrainian equivalents.
- •7. Match each word from the text with its synonym.
- •8. Match the words with their definitions.
- •Choose the correct preposition.
- •Read the passage about steam locomotives and traction engines and open the brackets.
- •11. Listen to the text about Watt Engine and compare it with the information from the text. What new facts have you known?
- •12. Define true and false sentences. Then listen and check.
- •13. Explain while answering the questions. Why:
- •Work in pairs. Discuss and list some problems early steam engines might have caused. Make your problem list and share it with your group. Support your ideas. Use the following phrases.
- •Translate the following passage about Thomas Savery’s and Denis Papin’s steam machines from Ukrainian into English.
- •Unit 3 modern high-pressure steam engines
- •Where are steam engines used today? Why is their use restricted mainly by atomic power plants and thermo-electric power stations?
- •3. Read the text and match the sentences (a-c) to the numbered spaces (1-3) in the text.
- •Modern high-pressure steam engines
- •4. Match the words in column a with the words in column b to form meaningful phrases. Translate them into Ukrainian.
- •5. Fill in the words from the list below. Use each word only once.
- •6. Match the English phrases with their Ukrainian equivalents.
- •7. Match each word from the text with its synonym.
- •8. Match the words with their definitions.
- •Choose the correct preposition.
- •Read the passage about the components of steam engines and choose the correct word.
- •11. Listen to the text and chose the statement which was not mentioned in the text:
- •12. Listen to the text and insert the missing words.
- •13. Comment on the following statements if you agree or disagree:
- •Webquest. Search the Web for the information on steam cars or steam locomotives in modern times. Write a review (200-250 words) about these technologies. Consider the following points:
- •Translate the following passage about the first compound steam engine built by the British engineer and inventor Arthur Woolf from Ukrainian into English.
- •Internal-combustion engines
- •1. Work with a partner to discuss the following.
- •3. Read the text and match the questions (a-e) to the paragraphs (1-5).
- •Internal-combustion engines
- •4. Match the words in column a with the words in column b to form meaningful phrases. Translate them into Ukrainian.
- •5. Fill in the words from the list below. Use each word only once.
- •6. Match the English words and phrases with their Ukrainian equivalents.
- •7. Match each word from the text with its synonym.
- •8. Match the words with their definitions.
- •Choose the correct preposition.
- •Read the passage about internal combustion engine and choose the correct word.
- •11. Listen to the text and tell your groupmates what type of engine it is about.
- •12. Listen once more and choose the right word.
- •13. Comment on the following points:
- •Translate the following passage about internal combustion engine from Ukrainian into English.
- •Look at the diagram and try to explain how the open-cycle constant-pressure gas-turbine engine works.
- •Read the text and answer the questions that follow.
- •4. Match the words in column a with the words in column b to form meaningful phrases. Translate them into Ukrainian.
- •5. Fill in the words from the list below. Use each word only once.
- •6. Match the English phrases with their Ukrainian equivalents.
- •7. Match each word from the text with its synonym.
- •8. Match the words with their definitions.
- •Choose the correct preposition.
- •Read the passage about gas turbine and open the brackets.
- •11. Listen to the text about the turbine and tell what the text is about:
- •12. Listen to the text once more and insert the necessary word.
- •13. Answer the questions.
- •14. Work in groups a, b, c, and d. Each group will read the information on the different types of a gas turbine engine. Listen and complete the chart about these engine, then compare them.
- •Work in a group. Read the text and discuss the difference between the turbo engine and reciprocating engine. See Appendix a (p. 99). Discuss:
- •You are going to take a part at a scientific conference. You have to make a report (200-250 words) about modern gas turbine engine. Your report should include the following points:
- •Webquest. Find the information about the modern gas turbine application in different areas: industry, transportation, energy supplement, space exploration etc.
- •Translate the following passage about gas turbine from Ukrainian into English:
- •Communication activities unit 1
- •Time line of steam engine invention.
- •Text 1 Steam Power and the Industrial Revolution: 1760-1840
- •Text 2 Modern Steam
- •Internal combustion engine invention impact
- •Suggested Solutions
- •Advantages of gas turbine engines
- •Disadvantages of gas turbine engines
- •Audioscripts unit 1 The Steam Engine
- •Unit 2 The Watt engine.
- •Unit 3 Modern steam engines
- •Unit 4 Diesel Engine
- •Unit 5 Avery’s Turbine
- •References
Unit 5 Avery’s Turbine
Today, Avery's turbine. The University of Houston's College of Engineering presents this series about the machines that make our civilization run, and the people whose ingenuity created them.
Most of the power we use today is generated by nuclear energy or coal or oil. What's not so well understood is that all such power plants, like their cousin, the hydroelectric dam, ultimately use turbines to generate power. At the base of a dam are water turbines. Oil, coal, and nuclear energy are used to boil water and drive steam turbines. A burned fuel / air mixture is used to drive a gas turbine. In every case, fluid passes through some kind of turbine blading to provide a huge portion of the power we use today.
Any book on turbine origins begins with steam-powered toys in Egypt, two thousand years ago. But that's a bit of a red herring. Steam turbines didn't become commonplace until Charles Parsons began building them in the 1890s. So what came in between? Engineer Frederic Lyman tells about a little-known figure in the creation of the steam turbine. He was William Avery. Born in 1793, he grew up working as a mechanic in New York State.
In 1831 he and a friend were granted a patent for a steam-powered device very similar to one of those ancient Egyptian toys. Jets of steam, emitted from either end of a whirling propeller-like tube, drove it. By that time, Watt and others had already tried and failed at creating rotary steam-driven machines. And the French had just begun developing the water turbine. Modern steam turbines don't work the same way as Avery's. They direct steam through a succession of rotating blades. Each stage removes energy and reduces the steam pressure. The aerodynamics of those blades gets very complex.
In Avery’s turbine, steam flowed from the hub out through the tip where it escaped as a driving jet. The tips approached the speed of sound and, when one of Avery's cast iron rotors failed, its fragments tore through three floors of a building.
To get power out at useful speeds, Avery used a series of belts and pulleys. Yet the machine worked. By 1837, he'd built maybe seventy engines. They developed around twenty horsepower and were put work driving sawmills, cotton gins, gristmills.
Among his other engineering accomplishments, Avery also built what was probably the first steamboat on the Erie Canal. But he died at 47, and the company that manufactured his turbines went bankrupt soon after. Another half century passed before Parsons' turbines appeared.
Then the electric generator came on the scene, and it required a high-speed drive. The turbine was the natural mate to the generator, which was now the perfect means for putting its power to use. The ghost of William Avery could now smile at last. What Avery had begun Parsons could now bring to fruition and bring to resounding success as well.
From Encyclopædia Britannica