COMPREHENSION CHECK

Decide whether the following statements are true or false according to the text.

1) A small number of historic buildings were ventilated naturally.

2) Air-conditioning plants are the alternative to natural ventilation.

3) The size and placement of openings in the building influence the amount of ventilation.

4) The natural forces of wind and buoyancy are used to deliver fresh air into buildings in natural ventilation.

5) Natural ventilation also decreases the humidity of incoming air.

6) Attic fans are usually installed through the roof or in the gable.

7) The power vent is necessary for moisture and temperature control if an attic cannot be ventilated by gravity or wind-assisted methods.

8) Architectural features or by the way a casement window opens always induce wind ventilation.

9) There shouldn’t be obstructions between the windward inlets and leeward exhaust openings.

10) Partitions in a room should be oriented parallel to the airflow.

Complete the following sentences according to the text.

1) Natural ventilation saves about …

2) … cause pressure differences.

3) It is useful to think of a natural ventilation system as …

4) Fresh air is required in buildings to …

5) Wind can blow air through … and suck air out of …

6) Buoyancy is caused by …

7) The use of attic fans controls …

8) Sufficient outlets must be installed in the attic to exhaust the air without …

9) Air conditioned homes can use power attic ventilators by …

10) The coefficient of effectiveness depends on … and ranges from …

Answer the following questions.

1) What is natural ventilation aimed at?

2) What do natural ventilation systems rely on?

3) What is used to complete the airflow circuit through a building?

4) What presents challenges to the designer of a natural ventilation system?

5) What can temperature differences between warm air inside and cool air outside cause?

6) What ways can power ventilation be accomplished?

7) What should the net area of attic outlets be?

8) What are the requirements for fans and inlets in Air conditioned homes?

9) What is the main advantage of power ventilators?

10) When should consideration be given to the use of a power ventilator with automatic or motorized inlet louvers?

11) Why does accepted design avoid inlet and outlet windows directly across from each other?

Find key words and phrases which best express the general meaning of each part. Make the plan of Text 2. Write a summary.

LANGUAGE FOCUS

Combine the words from the column on the left with the suitable nouns from the column on the right. Translate them into Russian.