After text activity. Exercise 1.Read and memorize using a dictionary:

I. Reading Exercises:

Exercise 1. Read and memorize using a dictionary:

Odor;airborne bacteria; replenish; excess humidity; contaminants; dilution; exhaust, flow rate; perceived temperature; occupant; stratified air; operable; trickle vents; backup; Air-side economizers; dampers, warehouse;akin; tuberculosis, the common cold, influenza and meningitis.

Exercise 2. Answer the questions:

1) What is ventilation?

2) What does ventilation include?

3) How may methods for ventilating a building be divided into?

4) What is natural ventilation?

Exercise 3. Match the left part with the right:

1. "Mechanical" or "forced" ventilation is provided by an air handler	a) to control odors and sometimes humidity.
2. Kitchens and bathrooms typically have mechanical exhausts	b) and used to control indoor air quality.
3. An important component of natural ventilation is	c) tuberculosis, the common cold, influenza and meningitis.
4. Natural ventilation is a key factor in reducing the spread of airborne illnesses such as	d) air changes per hour: the rate of ventilation through a room with respect to its volume.

Exercise 4. Open brackets choosing the right words:

Ventilation (includes/ contains) both the exchange of air with the (outside/ inside) as well as circulation of air within the building. It is one of the most (important / essential) factors for maintaining acceptable indoor air quality in buildings. Methods for ventilating a building may be (divided/ separated) into mechanical/forced and natural types.

II. Speaking Exercises:

Exercise 1. Learn the definitions: ventilation; mechanical" or "forced" ventilation; natural ventilation.

Ventilationis the process of changing or replacing air in any space to control temperature or remove any combination of moisture, odors, smoke, heat, dust, airborne bacteria, or carbon dioxide, and to replenish oxygen.

"Mechanical" or "forced" ventilation is provided by an air handler and used to control indoor air quality.

Natural ventilationis the ventilation of a building with outside air without the use of fans or other mechanical systems.

Exercise 2. Ask questions to the given answers:

1) Question: ___________________________________?

Answer: Ventilation includes both the exchange of air with the outside as well as circulation of air within the building.

2) Question: ___________________________________?

Answer: "Mechanical" or "forced" ventilation is provided by an air handler and used to control indoor air quality.

3) Question: ___________________________________?

Answer: Air-side economizers perform the same function as natural ventilation, but use mechanical systems in the forms of fans, ducts, dampers, and control systems to introduce and distribute cool outdoor air when appropriate.

III. Writing exercises:

Exercise 1. Complete the sentences with the suggested words: ventilation; without; achieved; small; allowed; in.

Natural ventilation is the 1 of a building with outside air 2 the use of fans or other mechanical systems. It can be 3 with operable windows or trickle ventswhen the spaces to ventilate are 4 and the architecture permits. In more complex systems, warm air in the building can be 5 to rise and flow out upper openings to the outside (stack effect) thus causing cool outside air to be drawn into the building naturally through openings 6 the lower areas.

Exercise 2. Compose a story on one of the topics (up to 100 words):

“ Ventilation is the process of changing or replacing air”

“ Mechanical" or "forced" ventilation”

“ Natural ventilation”

Дата добавления: 2015-08-03