COMPARISON OF METHOD OF CALCULATION OF DEMANDED PARAMETERS OF VENTILATING SYSTEMS OF SMOKE CONTROL OF MULTISTORIED BUILDINGS

Calculations of parameters of smoke control system with use of an engineering technique and aerodynamic schemes of the building are executed. At calculation of parameters of smoke control system from corridors, the pressurization in stairwells and mines of elevators with use of engineering techniques there is insufficiently correctly considered real planning of the building. Results of calculations of parameters of smoke control system with use of an engineering technique differ from the corresponding results received in calculations of aerodynamic schemes of buildings with various planning of stairwell and lift knots. The smallest differences are observed in results of calculations of parameters of fans the smoke removals, the greatest — in results of calculations of parameters of fans pressurization in staircases and mines of lifts. Results of calculations of parameters of smoke control system with various temperature of products of burning deleted from corridors showed that this parameter significantly influences parameters of system of smoke removal from a corridor and have no noticeable impact on parameters of fans pressurization in stairwells and mines of lifts. The executed calculations with climatic data (temperature of external air and wind speed), characteristic for the warm and cold periods of year, were allowed to define extent of their influence on required parameters of smoke control system of the multistoried building.