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Spatio-temporal distribution of gaseous pollutants from multiple sources in industrial buildings with different flow patterns

引用

Building Simulation 2022年第9期15卷 1629-1644页

作者： Yingxue Cao Yi Wang Zhuolei Yu Caiwu Lu Songheng Wu Yang Yang Xiaojing Meng School of Resources Engineering Xi'an University of Architecture and TechnologyNo.13 Yanta RDXi'anShaanxi 710055China State Key Laboratory of Green Building in Western China Xi'an University of Architecture and TechnologyChina School of Building Services Science and Engineering Xi'an University of Architecture and TechnologyNo.13 Yanta RDXi'anShaanxi 710055China

Energy consumption of industrial buildings has remained continuously high,and the environmental quality requirements are also constantly *** by improving industrial environmental control technology based on the transport mechanism of the pollution,can the energy consumption of industrial building environmental control be further reduced,and the environmental quality of industrial buildings can be improved as ***,after verifying the numerical simulation by experiments,this study uses a self-label method to investigate the spatio-temporal distribution of gaseous pollutants from multiple time-series sources in industrial plants with different length-span *** results show that,the polluted flow in plants with different aspect ratios have different flow patterns:(i)the,,Back-mixingw flow pattern occurs when the ratio of ventilation rate 6 and polluted flow rate at the exhaust height b is less than 1,i.e.,G/L_(p)*** plants with the"Back-mixing"pattern,the following source pollutants enter a density stratified environment induced by the retained pre-source *** flow of following source pollutants released at the same intensity as the precursor source can reach the roof,while those with low velocity and density difference may be blocked during the ascending *** maximum height zm of the flow of the following source is related to both the initial Froude number Fr_(o)of the following source and the unsteady vertical density gradient of the fluid in the indoor environment dpa/*** plants with the,,One-way,/pattern,the flow from the following source enters into an environment with approximately uniform *** the condition of positive buoyancy,design parameters of ventilation corresponding to the vicinity of G/L_(p)=1 may be the optimal solution for safety and energy conservation.

关键词： multiple time-series sources flow pattern long and narrow industrial building industrial ventilation gaseous pollutants

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