An audit of 20 hospital operating rooms was operated in Grece in order to collect information about the HVAC installations and the indoor physical parameters. Data were also collected from 560 medical personnel through a questionnaire about the assessment of the indoor conditions.
The revision of Ashrae standard 62, Ventilation for Acceptable Indoor Air Quality, began in 1991. This article gives a summary of the changes that have been approved and describes the issues that remain to be resolved.
Field measurements were carried out on six office buildings in Taïwan to evaluate ventilation efficiencies on the concentration of formaldehyde and TVOC, as well as the impact of ventilation rates on reducing these concentrations.
This study is to validate a CFD model of displacement ventilation combined with chilled ceiling and determine if this combination may create draught risk or influence badly indoor air quality.
The aim of this study is to evaluate different control strategies on ventilation in a bathroom and their efficiency. Comments are given on running time periods as well as reaction of different controls (occupation, CO2/COV, humidity).
Describes how CSTB undertook an experimental study of three schools in the Paris region to get to know the real quality of indoor air in educational buildings.
This study was based on measuring the physical and chemical characteristics of indoor climate variables in four town halls in Copenhagen in Denmark and on the odour-intensity judgements by a panel. Three of the buildings had high levels of work-related mucosal irritation and work-related general symptoms; the other one did not. There was a significant correlation between the total concentration of volatile organic compounds (TVOC), the air temperature and the panel's ratings of odour intensity and acceptability in the rooms.
This study investigates the connection between indoor climate and eczema. Nine patients suffering from atopic dermatitis (AD) were examined by doctors before and after moving to houses with better air exchange, low relative humidity and optimal temperature control. Every month for two years, three clinical and subjective assessments were made of disease activity, and compared with changes in suspended and respirable dust particles, room temperature, air exchange rate, number of house dust mites in bedrooms, and the levels of organic solvents in the indoor air.
Describes how workers at altitude are subject to hypoxia, which impairs the ability to sleep, mental performance, productivity and general well, being. Discusses the effectiveness of injecting oxygen into the air conditioning systems for these workers, which has the effect of reducing the equivalent altitude. Several studies have been made to test oxygen enrichment and have shown improvements in sleep quality and cognitive function. The fire hazard is less than in air at sea level.
The environment inside museums such as the Field Museum of Natural History in Chicago, USA is of utmost importance since permanent damage can be caused to artifacts in the environment is not correctly maintained and controlled. The article describes a longitudinal environmental survey carried out to assess the performance of the facility's HVAC systems and controls. A series of hypotheses was developed and tested to explain deterioration of a number of mammal mounts in the museum's exhibition halls.
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