Variación de la presión en condiciones de flujo real en los sistemas de ventilación para redes de desagüe sanitario evaluadas en edificios de gran altura

Abstract

This monograph is the compilation of the methodology for calculating and analyzing the behavior of downspouts and ventilation systems for sanitary sewer networks compared in two buildings of different height, within the behavior analysis two real cases of layout and design are evaluated of sewage collection networks where, through the variables of pressure, air velocity and acoustic velocity, the development of pressure transients is determined by evaluating the downspout as a simple downspout with primary ventilation (extension of the downspout over the cover) and as a downspout with parallel ventilation or secondary ventilation. To do this, the initial conditions are calculated according to the real configuration of two designs for each of the buildings of different height based on the flow, diameter, speed and ratio of areas of the downspout, where for each building under analysis it is performed the selection of some downspouts so that the behavior under different conditions can be evaluated based on the devices that connect to the downspout and on each node of the same. Based on the evaluation of the aforementioned values, the characteristics method based on the solution of the St. Venant continuity and moment equations is applied to determine the pressure variation at each node of the downspouts under study.