正压送风量的计算分析（Calculation and analysis of positive pressure air supply）.docVIP

正压送风量的计算分析（Calculation and analysis of positive pressure air supply） 1, preface The vertical high-rise building staircases, elevator wells, tube wells, tube wells, such as not considering the smoke control measures, the chimney effect, in case of fire, will become the main way of the fire spread rapidly. Each level of high-rise building fire district according to the process of evacuation, is from the first safety zone (corridor), second safety (staircase compartment), to third (safety evacuation stairs), and then to the outside of the process. So, smoke proof staircase and antechamber antechamber and common antechamber, fire elevator, smoke control facilities should be independent. The way of smoke control can be divided into natural smoke exhaust, mechanical smoke exhaust and mechanical pressurization air supply mode. In this regard, the high level civil building design code for fire protection made clear regulations. However, for high-rise building smoke proof staircase and its antechamber and common antechamber and fire elevator mechanical pressure calculation method of air volume, and did not make it clear that the Design Institute, even everyone on the understanding of the specification is different, it may adopt a different method in the calculation, the author has been on the same the project is calculated by different methods. Data show that the statistics up smoke proof staircase and elevator room, room fire elevator and air pressure is common antechamber calculation method about more than 20, there is no uniform. The reason is that the factors that influence the positive pressure air supply are complicated, and the starting points of various calculation formulas are different. This article will focus on the high-rise building smoke proof staircase and its antechamber and common antechamber and fire elevator mechanical pressure calculation method of air volume analysis. 2, the assumptions of the calculation model Because at the time of the fire, open the d