Heating, ventilating, and air-conditioning (HVAC) technology keeps growing towards providing people with good thermal comfort indoor air quality. Most buildings use a centralized system in which the air-handling configuration of variable volume (VAV) focuses on controlling zone temperature. But, some areas facing under-actuated over-actuated airflow lead to distortion comfort. Some get too cold...

Abstract Limited land for agricultural cultivation in urban areas makes it difficult to fulfill healthy and sustainable food. Mini Plant Factory is an alternative produce food, especially vegetables. In the Factory, distribution of air flow one thing that must be considered because will affect growth plants so necessary do analysis determine good mini plant factory using Computational Fluid Dyn...

OBJECTIVES Consistent estimation of the burden of chronic obstructive pulmonary disease (COPD) has been hindered by differences in methods, including different spirometric cut-offs for impaired lung function. The impact of different definitions on the prevalence of potential airflow obstruction, and its associations with key risk factors, is evaluated using cross-sectional data from two nationa...

The uniformity of the environmental conditions in a vertical farm can be poor due to multi-layer cultivation shelves, crop resistance airflow, and excessive heat generated by artificial lighting, decreasing overall yield quality. This study evaluates performance two air distribution systems, i.e., long-side supply short-side supply, generic using validated computational fluid dynamics (CFD) mod...

At high altitudes, the air pressure is much lower than it is at sea level and contains fewer oxygen molecules and less oxygen is taken in at each breath. This requires deeper and rapid breathing to get the same amount of oxygen into the blood stream compared to breathing in air at sea level. Exercises increase the oxygen demand and make breathing more difficult at high altitude. In this study, ...

green fig, a fruit usually consumed as dried is one of the important non-oil export agricultural commodities of iran. physical properties of green fig are vital parameters as regards the design of such post harvest processing equipments as dryers, sorters and storing chambers. in this research work the effect of moisture content on fruit characteristic dimensions, geometric mean diameter, spher...

The technique used to control the airflow is based on the electro-hydrodynamic actuator which is also called plasma actuator. This actuator ensures the airflow control thanks to the electric wind created by the electrical corona discharge. This ionic wind is developed at the profile surface tangential to the initial free airflow so that it has a significant effect on the boundary layer flow. Th...