In Central and Eastern Europe, a growing popularity of gas heaters as the main source of heat and domestic hot water can be observed. This is the result of new laws and strategies for funding that have been put in place to encourage households to stop using coal and replace it with cleaner energy sources. However, there is a growing concern that gas furnaces are prone to malfunction and can be a threat to occupants through CO (carbon monoxide) generation. To see how a faulty gas furnace with a clogged exhaust may affect a household, a series of multizone and computational fluid dynamics (CFD) simulations were carried out using the CONTAM software and CFD0 editor created by the National Institute of Standards and Technology (NIST). The simulations presented different placements of the furnace and ventilation outlet in an attached garage. The results showed how the placement influenced contaminant migration and occupant exposure to CO. It changed the amount of CO that infiltrated to the attached house and influenced occupant exposure. The results may be used by future users to minimize the risk of CO poisoning by using the proper natural ventilation methods together with optimal placement of the header in the household.

中文翻译：

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家用燃气炉污染物迁移的CFD和多区域建模的比较

在中欧和东欧，可以看到越来越多的燃气加热器成为主要的热能和生活热水。这是新的法律和资金战略的结果，这些法律和战略已经出台，以鼓励家庭停止使用煤炭，并用更清洁的能源替代煤炭。但是，人们越来越担心燃气炉容易发生故障，并可能通过产生CO（一氧化碳）对乘员构成威胁。为了查看故障的煤气炉，排气管堵塞如何影响家庭，使用由美国国家标准技术研究院（NIST）创建的CONTAM软件和CFD0编辑器进行了一系列的多区域和计算流体动力学（CFD）模拟。 。模拟显示了附属车库中熔炉和通风口的不同位置。结果表明，布置如何影响污染物迁移和乘员接触CO。它改变了渗入附着房屋的CO量并影响了乘员暴露。通过使用适当的自然通风方法以及联管箱在家庭中的最佳放置，将来的用户可以使用该结果将CO中毒的风险降至最低。