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Experimental and computational investigation of indoor air quality inside several community kitchens in a large campus

机译：大型校园中几个社区厨房室内空气质量的实验和计算研究

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摘要

The present work deals with the experimental and computational investigation of the air quality in selected kitchens in the campus of a large institute in India. Four kitchens have been carefully selected after a detailed initial survey of the cooking arrangement and exhaust systems in all of the kitchens in the campus. For the experimental part the concentrations of CO_2 and CO and temperature are recorded with the help of an indoor air quality measurement device named IAQ_ Calc7545. In each of the four kitchens, a 1.8 m x 1.5 m vertical area was selected, which is perpendicular to the vertical side of a burner that faces the cooks, and measurements were carried out at 72 suitable grid points within this area. For the computational part, the three-dimensional fluid flow field in the kitchen of site 1 is numerically simulated by Fluent The volume fractions of CO_2 and CO at the outlet of the burners are estimated from a separate FORTRAN code for equilibrium chemical analysis and are used as a boundary condition for the Fluent simulation. The mixture model for the multiphase flow in Fluent is used for finding the distribution of the species within the flow domain. Given the complexity of the geometry and flow field considered here, the results of CFD modelling agree well with the experiments, validating the choice of boundary conditions, grid generation and other subtleties involved. The measured and computed values are compared with the corresponding ASHRAE standard.
机译：目前的工作是对印度某大型研究所校园内部分厨房的空气质量进行实验和计算研究。在对校园中所有厨房的烹饪布置和排气系统进行了详细的初步调查之后，已经仔细选择了四个厨房。对于实验部分，借助于名为IAQ_ Calc7545的室内空气质量测量设备来记录CO_2和CO的浓度以及温度。在四个厨房中的每个厨房中，选择一个垂直于烤箱的垂直于炊具的垂直侧的1.8 m x 1.5 m垂直区域，并在该区域内的72个合适的网格点上进行测量。对于计算部分，站点1的厨房中的三维流体流场通过Fluent进行了数值模拟。燃烧器出口处CO_2和CO的体积分数由单独的FORTRAN代码估算出来，用于平衡化学分析，并用于作为Fluent模拟的边界条件。 Fluent中多相流的混合模型用于查找流域内物质的分布。考虑到此处考虑的几何形状和流场的复杂性，CFD建模的结果与实验吻合得很好，验证了边界条件，网格生成和其他涉及的细节的选择。将测量值和计算值与相应的ASHRAE标准进行比较。

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