- •3. Match the words or notions with their definitions.
- •2.Read and retell the text.
- •Initial Definitions
- •3. Put the sentences in the correct order according to the text.
- •4. Choose the correct answer.
- •3. Say whether the statements are true or false.
- •4.Choose the correct answer.
- •5. Answer the following questions.
- •6. Memorize the dialogues and perform them in pairs.
- •7. Now try to tell the gist of the text in 5-6 sentences. Use the questions from Ex. 5 to help you.
- •1. Memorize the following words and expressions:
- •2. Read the text, study it. Find in the text examples to illustrate difference between key notions: heat and work.
- •It is impossible to construct an engine that will work in a complete cycle and produce no other effect except the raising of a weight and the cooling of a reservoir.
- •3. You. Are to add to the diagram the necessary information.
- •4. Match the words with their definitions.
- •5. Make up sentences.
- •7. Answer the following questions.
- •8. Ask the given sentence as many questions as possible.
- •9. Translate the sentences into English.
- •1. Memorize the following words and expressions:
- •2. Read the text, study it Find in the text examples to illustrate difference between key notions: heat and work.
- •3. Complete the sentences.
- •Write down as many questions to the given sentences as possible.
- •Say if the statements are true or false;
- •Heat and work:
- •3. Try to explain the meaning of the given words using the information you’ve learnt from the text.
- •4. Solve the crossword puzzle.
- •5. Say whether the statements are true or false.
- •6. Fill in the blanks with the missing words.
- •Read the dialogues and dramatize them in pairs.
- •1. Memorize the following words and expressions:
- •2. Read and retell the text.
- •3. Answer the following questions.
- •4. Explain the difference between heating systems. Fill in the table.
- •5. Complete the following sentences using the english equivalents instead of the Ukrainian words and word-combinations.
- •1. Memorize the following words and expressions:
- •2. Read and retell the text.
- •3. Make up sentences with given words:
- •4.Complete the following sentences.
- •6. Supply questions to these sentences.
- •7. Find the Ukrainian equivalents of the given words.
- •8. Read and translate the dialogue.
- •2. Read the text. Find the difference between these two systems of ventilation.
- •Vacuum Ventilation.
- •3. Fill in the blank with the necessary words and word-combinations.
- •4. Try to retell the gist of the text in 5-7 sentences.
- •5. Explain the difference between artificial, vacuum and plenum ventilation.
- •6. Answer the questions:
- •2. Read (he text, study it. Pay attention to new words.
- •3. Answer the following questions:
- •5.Choose the correct answer:
- •6. Read and translate the dialogue..
- •1. Memorize the following words and expressions:
- •2. Read and translate the text and information in the table.
- •3 .Answer the questions:
- •4. Try to explain the meaning of the given heating methods using the information you’ve learnt from the text:
- •5. Fill in the blanks with the missing words:
- •Ventilation and water heating
- •1. Memorize the following words and expressions:
- •2. Read and translate the text.
- •Ventilation and water heating
- •7. Try to explain how building byelaws applied to ventilation.
- •1.Memorize the following words and expressions:
- •2. Read and translate the text.
- •7. Make up the plan according to the text.
- •1. Memorize the following words and expressions.
- •2. Read and translate the text.
- •3. Answer the questions :
- •4. Translate into English.
- •5. Ask 4 types of the questions to the sentence:
- •6. Fill in the gaps using the necessary words:
- •1. Read and memorize following words and expressions:
- •2. Read, translate and study the text:
- •2.Scan for the details and circle the correct letter.
- •3.Choosc the words from the box to complete sentences.
- •2. Answer the following questions:
- •3. Ask 4 types of the questions to the sentences:
- •4.Choose the words from the box to complete sentences.
- •Complete the following sentences.
- •4. Make up 5 sentences using following words:
- •5. Make up the plan according to the text, not less than 10 items.
- •6. Fill in the table . Pay attention to the types of the boilers and explain the difference between them.
- •7. Answer the questions to the text:
- •1. Read the text and try to understand the main idea:
- •3. Complete the following sentences:
- •4.Fill in the blanks with the missing words:
- •5.Choose the correct answer:
- •1.Read and translate the text.
- •2. Make the translation of Steam Turbines classifications .
- •3. Answer the questions of the text:
- •4. Is it true or false?
- •6. Make un 5 sentences with following words:
- •7.Work in pairs. Complete the dialogue.
- •7. Fill in the table.
- •1.Read and translate the text.
- •2.Make the difference between the types of the turbines.
- •3.Ask questions to the sentences.
- •4.Complete the sentences.
- •5. Agree or disagree with the statements:
- •6.Answer the following questions:
- •7. Choose the words from the box to complete sentences.
- •Unit 26
- •2. Read and translate the abstract.
- •3. Find the Ukrainian equivalents of the word-combinations:
- •4.Use the words from Ex. 3 and make up sentences with them.
- •5. Translate into English.
- •1. Read and memorize the following expressions:
- •2. Read and translate the text:
- •3. Answer the questions:
- •4. Fill in the blanks with the missing words:
- •5. Agree or disagree with the statements:
- •4.Complete the sentences. Choose the correct word from the brackets:
- •3. Give the Ukrainian equivalents:
- •4. Answer the following questions:
- •5. Translate the sentences into English:
- •Indirect systems
2. Read the text. Find the difference between these two systems of ventilation.
Artificial and Vacuum Ventilation
"Ventilation is a science, and it requires the study of a lifetime to master properly all its Intricacies. The greatest engineering skill is necessary in the arrangement of tubes and the supply of fresh air."
Parkes
Artificial Ventilation.
In the case of large floor areas, such as we have in designs for theatres, factories, large public halls, and other similar buildings, it is necessary to resort to artificial ventilation, which may be tabulated as follows:
Vacuum or exhaust ventilating schemes.
Plenum or propulsion ventilating schemes.
Some combi nation of the above systems.
Vacuum Ventilation.
This is a system of ventilation whereby the internal air is extracted by suitable fans. The ingoing air is induced through windows and other similar inlets already described for natural ventilation, and a steady flow of air is maintained by means of the extraction fans.
Various types of fans may be used. They are generally made of metal of a rotary design and housed in a convenient part of the ductwork. Care must be taken to see that the ducts are ’ fairly straight, and with easy bends if necessary. Avoid righ angled bends, which impair the efficiency of the system owing to friction.
Fans are usually driven by electric motors, but other power may be utilized where
electricity is not available. With the vacuum ventilating system there is no control of the incoming air; therefore this system can only be employed successfully where the surroundings are not noisy and windows can be opened to admit clear air.
3. Fill in the blank with the necessary words and word-combinations.
It is necessary to to artificial ventilation in theatres, factories, large public
halls, and other similar buildings.
is a system of ventilation whereby the internal air is extracted by suitable fans.
The air is induced through windows and other similar inlets already described for natural ventilation.
Fans are generally made of of a rotary design and housed in a convenient part of the .
Care must be taken to see that the ducts are .
are usually driven by electric motors.
With the vacuum ventilating system there is no control of the air.
Plenum ventilation.
Control' over the incoming air is an important feature of this type of| ventilation.
Where the conditions are such that the surroundings are noisy and the air is fouled by smoke and dust, the plenum system can be contemplated to provide clean air at the correct temperature and humidity. The drawn into the building by a fan, and is discharged through (it suitable positions; conveniently place the ventilation air through ducts controlled by an extra fan of smaller power than the inlet fan. A slight pressure is created owing large rate. The plenum .system of ventilation is costly to install, owing to the necessity for expensive apparatus consisting of propulsion and extraction fans, air heaters, washers and biters (these vary according to circumstances), and distributing ductwork for the incoming air.
A typical arrangement of plenum heating: The air coming in is heated, by a heater battery, fed from an independent boiler feeding wrought-iron gilled tubes which have a good radiating surface. In summer, however, the alt can be cooled by passing through the same battery fed by an ammonia refrigerating plant. Supplying cold water instead of hot water from the boiler. The ductwork is liable to conve> sound unless special care is taken with, the placing of the fans.
With the vacuum ventilating system there is no control to incoming air; therefore this system can only be employed successfully where the surroundings are not noisy and windows can be opened to admit clean air.