In using mechanical general ventilation, which is the best method of providing
general ventilation in a closed building? Supply air:
a. Via ductwork.
b. By using roof fans.
Through holes in walls.
d. With a center atrium filled with plants.
What will a good mechanical general ventilation system do for the workers? It will
a. Humidity high and temperature down.
b. Humidity low and temperature comfortable.
Temperature hot and humidity high.
d. Humidity low and temperature cold.
Which is a limiting factor when considering the dilution ventilation system for
a. Toxicity of the contaminant must be low.
b. Quantity of contaminant generated must be excessive.
Workers must be located close to contaminant evolution.
Because high toxicities encountered require excessively high quantities of air,
would usually not be recommended for control of fumes
a. Dilution or general ventilation.