- •Vocabulary
- •1. 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. Translate into English.
- •7. Write a dictation.
- •Vocabulary
- •1. Choose the proper verb form.
- •2. Answer the questions.
- •Vocabulary
- •1. Give English equivalents:
- •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. Translate into English.
- •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:
- •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.
- •Vocabulary
- •1. Give English equivalents:
- •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. Translate into English:
- •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. Give English equivalents:
- •3. Answer the questions:
- •Unit VII. The economizer
- •Vocabulary
- •1. Give English equivalents:
- •2. Ask questions according to the model in the singular or in the plural:
- •3. Insert prepositions and conjunctions:
- •4. Answer the questions:
- •5. Translate the phrases containing comparatives and superlatives:
- •6. Translate into English:
- •How to operate a boiler? Boiler Starting Procedure - Checks and Techniques
Vocabulary
mixture, n смесь
front of the boiler фронт (передняя часть) котла
header, n коллектор
line (with), v облицовывать; футеровать; выкладывать
floor, n под (топки)
refractory, adj огнеупорный; жаростойкий
due to radiation из-за излучения
generating tubes водогрейные (испарительные) трубы котла
provide, v обеспечивать
heat transfer surface теплопередающая поверхность
steam generation парообразование
large-bore pipes трубы с большим (внутренним) диаметром
superheater, n пароперегреватель
bank of tubes пучок труб
saturation temperature температура насыщения
economizer, n экономайзер
heat exchanger теплообменник
efficiency, n производительность; КПД
extract, v извлекать
recover, v утилизировать
stack, n дымовая труба
intermediate pressure среднее (промежуточное) давление
single-drum однобарабанный
inclination, n наклон
arrangement of gas flow способ течения газа
single-flow однопроточный (одноходовой)
E X E R C I S E S
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.