General ventilation and local exhaust ventilation are described, and terms used in industrial ventilation are defined. Conservation of mass, conservation of energy, velocity pressure, static pressure, total pressure, friction losses, dynamic losses, acceleration and hood entrance losses, and pressure drop through ductwork are basic considerations in ventilation air flow. Properties of airborne materials, including dusts, fumes, mists, smoke, vapors, and gases, are described. Information is given on applications of dilution ventilation, make-up air, and air moving devices.
The Industrial Environment - Its Evaluation and Control, NIOSH, Cincinnati, Ohio, Chapter 39