Cavity ventilation design optimization method and system for extra-large railway station waiting hall

Abstract

The invention discloses a cavity ventilation design optimization method and system for an extra-large railway station waiting hall. An extra-large railway station waiting hall typical space model is used as a basis; parametric simulation is conducted on seven independent variables including the section side length, the air shaft cavity height, the longitudinal arrangement number, the transverse arrangement number, the cavity opening width, the opening height and the height from an opening to the ground of the air shaft cavity scale through CFD, and three dependent variable data sets includingthe waiting hall personnel height average temperature, the average air speed and the average carbon dioxide concentration are output; a regression fitting model of the personnel height average temperature, the wind speed and the carbon dioxide concentration in the waiting hall is analyzed and established through a stepwise regression method; the independent variable in the regression equation is adesign parameter capable of significantly influencing the dependent variable; therefore, variables in the equation are considered preferentially during design, a regression fitting model of cavity design parameters and indoor comfort indexes is established, the design process of waiting hall cavity implantation is optimized, and an ideal waiting hall indoor comfort environment is achieved with low consumption and high efficiency.

Description

technical field [0001] The invention relates to a large-scale waiting room ventilation design technology, in particular to a cavity ventilation design optimization method and system for a super-large railway station waiting room. Background technique [0002] Since the 21st century, with the rapid development of high-speed railways, large railway stations have become an important part of the construction of central cities at all levels in our country. According to the survey and statistics of the author's team in 11 provinces in northern my country, there are 63 large and extra-large railway stations, most of which were newly built or renovated in the past 10 years, and the construction scale has shown rapid growth. According to the statistical data of the "China Building Energy Conservation Annual Development Research Report" (2017), the median energy intensity per unit area of ​​transportation hub buildings is 125kwh / m 2 ·a, it ranks second among public buildings, second ...

AI Technical Summary

Problems solved by technology

In the design of the cavity implantation in the existing waiting hall, it is generally designed by the designer based on the experience and the position distribution of the air conditioner. The setting of the ventilation cavity is not combined with the indoor and outdoor environmental factors, and the ventilation effect is not good, making Air conditioner does not achieve optimal energy consumption

Images