- •Vocabulary
- •Give English equivalents.
- •2. Ask questions according to the models.
- •3. Supply prepositions.
- •4. Complete the sentences. Choose the right word from the list. There are more words than necessary!
- •5. Answer the questions.
- •6. TranslateintoEnglish.
- •7. Write a dictation.
- •Vocabulary
- •1. Choose the proper verb form.
- •2. Answer the questions.
- •Vocabulary
- •1. GiveEnglishequivalents:
- •2. Complete the sentences:
- •3. Give English equivalents to the words in brackets:
- •4.Self-assessment questions:
- •5. Translate into English:
- •1. Translate the word combinations into Russian and use them in your own sentences.
- •2. Choose the proper verb form, active or passive.
- •Vocabulary
- •1. TranslateintoEnglish.
- •2. Supply the proper preposition.
- •Vocabulary
- •Give English equivalents:
- •Answer the questions according to the models:
- •Match the type of the boiler with its principle of classification:
- •Self-assessment questions:
- •5.Translate into English:
- •1. Find the corresponding English translation in the text and memorize the words.
- •2. Put questions to the sentences.
- •Vocabulary
- •1. Give answers to the questions:
- •2. Translate into English:
- •Vocabulary
- •1.Give English equivalents:
- •2. Ask questions according to the model:
- •3. Complete the sentences:
- •4. Answer the questions:
- •5. Translate into English.
- •2. Translate the word combinations and use them in your own sentences.
- •Vocabulary
- •1. Supply prepositions.
- •2. Answer the questions.
- •Vocabulary
- •1. GiveEnglishequivalents:
- •2.Change these sentences using the modal verbs may, can, must:
- •3. Change these sentences into the passive:
- •4. Supply prepositions:
- •5. Answer the questions:
- •6. TranslateintoEnglish:
- •2. Complete the sentences.
- •Vocabulary
- •1. Change these sentences using the modal verbs may, can, must:
- •2. Change these sentences into the passive:
- •Vocabulary
- •1. Give English equivalents.
- •2. Supply prepositions.
- •3.Self-assessment questions.
- •4. Translate the words into Russian.
- •5. Choose the proper verb and put it into the correct form. There are more verbs than necessary.
- •6. Translate into English:
- •Unit VI. The superheater
- •Vocabulary
- •1. GiveEnglishequivalents:
- •Saturation, inlet, tubes, outlet, drums, safety valve, uptake, headers
- •3. Answer the questions:
- •Vocabulary
- •1. GiveEnglishequivalents:
- •2. Insert prepositions and conjunctions:
- •3. Answer the questions:
- •4. Translate the phrases containing comparatives and superlatives:
- •5. Translate into English:
- •1. Find English equivalents in the text.
- •2. Write down all the imperative phrases typical for this instruction.
- •3. Put questions to the sentences.
- •Vocabulary
- •1. Combine these pairs of sentences by using “if”.
- •2. TranslateintoEnglish.
- •Irregularities in operation, causes and remedies
- •Vocabulary
- •1. Replace the imperative sentences (remedy) by the following structures:
- •2. Translate these phrases into Russian:
Give English equivalents:
Наиболее распространенный тип; пароводяная смесь; трубы маленького диаметра; циркулировать по трубам; смешивать; предотвращать; потеря тепла; окружать; соединять; естественная циркуляция; воздухоподогреватель, выхлопные газы, котел низкого давления, котел высокого давления, до 15 атмосфер, свыше 28 атмосфер, двухпроточный.
Answer the questions according to the models:
-
Model A. Does the boiling occur in the economizer?
No, it doesn’t.
Do the gases pass from the furnace to the stack?
Yes, they do.
Do the gases pass through a number of tubes in the water-tube boiler?
Does steam-water mixture circulate through tubes in the water-tube boiler?
Does the combustion heat the water only in the drums?
Do downcomers provide good natural circulation of the water?
Do superheaters heat the steam below the saturation temperature?
Does a horizontal water-tube boiler have an inclination more than 45º?
-
Model B. Is superheater tubing used to heat the gases?
No, it isn’t.
Are burners located in front of the furnace?
Yes, they are.
Is the furnace surrounded on all sides by the tubes?
Is superheater tubing used to heat the gases?
Are the gases cooled in the economizer?
Is the circulation in the water-tube boiler only natural?
Are air heaters provided to heat combustion air?
Are the exhaust gases sent to the stack?
Ask for details:
-
Model C. Burners are located in the boiler front.
Where are the burners located?
Heat energy is contained in the steam.
The heated water is fed to the boiler.
Air and fuel are mixed in the furnace.
Downcomers are located between the steam and water drums.
The furnace is lined with refractory material on the floor and walls.
Generating tubes are fitted between the steam and water drums.
Match the type of the boiler with its principle of classification:
Boilers may be classified into:
single-drum, two-drum and three-drum boilers by the pressure
main and auxiliary boilers by the number of drums
vertical and horizontal boilers by the tube inclination
single-flow and double flow boilers by their purpose
natural and forces circulation boilers by the superheater location
vertical and horizontal boilers by the arrangement of gas flow
low, intermediate and high pressure boilers by the principle of water and
steam mixture motion.
Self-assessment questions:
Which is one of the most widely used types of marine boilers?
Where do the gases pass in the water-tube boiler?
What does the steam-water mixture circulate through?
Where are burners installed in a modern water-tube boiler?
What is the function of the furnace?
What is the furnace lined with?
What is the function of superheater tubing?
What are air heaters used for?
What is the boiler classification according to the pressure?
How are water-tube boilers classed according to the number of drums?
What do we call boilers with tube inclination of 45-90?
How can the superheater be located in the boiler?
How are water-tube boilers classed according to the gas flow arrangement?