Fill in the correct prepositions, translate the phrases, then choose any five items and make up the sentences of your own.

Date: 2015-10-07; view: 521.

Ventilation

1) Mechanical removal of air from a portion of a building (e.g., piece of equipment, room, or general area).

2) The rate at which outdoor air enters and leaves a building. Expressed in one of two ways: the number of changes of outdoor air per unit of time (air changes per hour, or "ach") or the rate at which a volume of outdoor air enters per unit of time (cubic feet per minute, or "cfm").

3) A form of ventilation, which relies on mixing uncontaminated air with contaminated air in such quantities that the resultant mixture in the breathing zone will not exceed the allowable exposure limit specified for any contaminant.

4) The equipment or operation associated with the supply or exhaust of air, by natural or mechanical means, to control occupational hazards in the air in an industrial setting.

5) Ventilation system designed to maintain an acceptable indoor air by mixing the contaminated indoor air with fresh outdoor air and by controlling the temperature and humidity of the indoor air.

1) to air ___ home; 2) to move ___ place ___ place; 3) to spread ___ home; 4) to be appropriate ___ workshops; 5) to mix outdoor air ___ indoor air; 6) to force air out ___ cracks and openings; 7) to cool incoming air ___ outgoing exhaust air; 8) to be ___ pressure; 9) to cost ___ the range of; 10) air leaking ___ homes; 11) to pay ___ oneself ___ energy savings.