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Document ID (ISN)27023
CIS number 77-683
ISSN - Serial title Journal of Occupational Accidents
Year 1976
Convention or series no.
Author(s) McQuaid J.
Title The design of water-spray ventilators.
Bibliographic information July 1976, Vol.1, No.1, p.9-19. Illus. 6 ref.
Abstract The problem of specifying the design of a water-spray ventilator for a given duty is considered. The ability of a water spray to entrain air has been applied in coal mines for local ventilation where only small air flow rates (less than 0.5m3/s) are required. These ventilators, which consist of a spray nozzle mounted on the axis of a tube, find general use on face or heading machines, where the spaces around the cutting head may be inaccessible to the main ventilation and frictional ignition of methane is a hazard. A brief outline of previous investigations on the principles is followed by considerations on the penetration of a jet and its scouring action. The principles of the design of ventilators for free operation are presented, and the manner in which the addition of an external resistance is taken into account is outlined.
Descriptors (primary) mine gases; water spraying; explosion prevention; mine ventilation; air ejectors
Descriptors (secondary) methane; coal mining; design of equipment
Document type -
Subject(s) Heating, ventilation and climate
Broad subject area(s)
Browse category(ies) Explosions
Compressed gases and pressure vessels
Ventilation