background: in the past few decades, indoor air pollution (iap) has become a primary concern to the point. it is increasingly believed to be of equal or greater importance to human health compared to ambient air. however, due to the lack of comprehensive indices for the integrated assessment of indoor air quality (iaq), we aimed to develop a novel, fuzzy-based indoor air quality index (fiaqi) t...

Abstract Under replacement ventilation conditions, a simplified physical model of tall space (livestock house) was established using ProSim software, and the relevant boundary conditions were set. The airflow size direction distribution under different air supply exhaust obtained by slicing, simulation results showed that appropriately increasing helps to increase pollutant emission rate so pol...

Inlet boundary conditions at the supply opening play an important role in accuracy and reliability of computational fluid dynamics (CFD) simulations for indoor airflow. A non-exhaustive overview past CFD ventilation flow generic enclosures indicates that uniform hypotheses inlet are commonly used. However, due to thermal effects a complex air system geometry, constant values airflow quantities ...

To maintain proper indoor air quality and increase energy efficiency, a demand-control ventilation (DCV) system has become popular solution. This paper reports the findings of field study conducted on performance DCV systems in eight public buildings southern Finland. We measurements two stages. In first stage, we made site visit measured airflow rates design operation conditions chosen space. ...

For many years investigators have been aware of potential links between climate change and outdoor air quality. Far fewer studies have focused on climate change and indoor air quality, but a new report from the Institute of Medicine (IOM) concludes that the relationship between the two warrants further attention and action. 2 " There's not much research at this interface, and hard evidence is n...

Chronic Obstructive Pulmonary Disease (COPD) is a disorder of the respiratory system characterized by progressive and only partially reversible airflow obstruction, due to a varying combination of large (bronchitis) and small airways (small airway disease) damage, and lung parenchymal and vascular destruction [1]. We prefer the term obstruction to airflow limitation because the latter is a phys...

During floods, the Malaysian Department of Welfare (JKM) oversees opening and assigning victims to evacuation centres. Public buildings such as school classrooms community halls act Temporary Evacuation Centers (TEC) that can last up two weeks. The foldable tents will be provided each family at centres assure have personal space. For privacy separation, they were confined in a temporary tent wi...

In recent years, the increasing occurrence of heatwaves raises cooling need residential buildings in Scandinavian countries, which are traditionally not equipped with active systems. Indoor overheating caused by such leads to severe consequences for occupants, especially kids and seniors. Efficient economical solutions urgently needed cope frequent heatwaves. The present study investigated nove...