The Effect of Legionella Pneumophila Contamination in the Surface Dust of the Air Ducts of Central Air Conditioning Systems on Indoor Air Quality

The aim of this study was to determine the concentration of Legionella pneumophila in the surface dust of the air ducts of central air conditioning systems and evaluate its effects on indoor air quality. Thirty dust samples were collected from thirty air ducts and analyzed using real-time TaqMan PCR targeting the mipgene.

The energy consumption of the public buildings in Osaka, Japan

The aim of this research work is to investigate the actual energy consumption in existing public buildings and to obtain the basic data for energy conservation of these buildings. Various monthly energy consumption data of public buildings in Osaka for the period from April 2000 to March 2002 was gathered and analyzed to determine the nature of the energy consumption of buildings. One of the investigated buildings is selected as the typical building and the heat load is calculated. The calculated values of the energy consumption are compared with the investigation values.

Survey of indoor air quality in three indoor swimming pools

The survey concerned three swimming pools using a similar type of basic water treatment, buthaving different structures and ventilation systems. The survey included measuring air currentvelocities above the pools and studying the microbiological and physico-chemical quality ofthe pool water. In addition, microbes were determined from the indoor air, structures andventilation systems, and airborne particles and volatile organic compounds from the indoor airsamples. The total particle concentration of the indoor air and their size distribution variedbetween the swimming pools.

Human exposure to particulate and gaseous pollutants in a bar

There is increasing evidence of a causal link between airborne particles and ill health and thisstudy examined the exposure to both airborne particles and the gas phase contaminants ofenvironmental tobacco smoke (ETS) in a bar. The work reported here utilized concurrent andcontinuous monitoring using real-time optical scattering personal samplers to recordparticulate (PM10) concentrations at two internal locations. Very high episodes were observedin seating areas compared with the bar area.

The transformation of the conservatorio San Giuseppe into the cospicua residential home for the elderly, Malta

The transformation of the Conservatorio San Giuseppe , into the Cospicua Residential Home for the Elderly has become a landmark in the neighbourhood. It brings past and present together with its old church and stepped new development incorporating a colourful orange windbreak. It is an example of how an old building, originally an orphanage for girls, with limitations of location and orientation could be rehabilitated to incorporate energy efficient features. Both the original structure and the new construction are load bearing with a high thermal mass to utilise a direct gain system.

The effect of ventilation and air pollution on perceived indoor air quality in five town halls.

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.

Upgrading and retrofitting the Field Museum, Chicago, Illinois.

The Field Museum is a world-renowned natural science institution. It is housed in an 84,000 m 2 building constructed from 1917 to 1921. Housed in the building are scientific laboratories, specimen preparation facilities, resource centers, over twenty-one million specimens, public exhibits, educational venues and lecture halls, administrative areas and restaurants. This paper presents the approaches used by The Field Museum to bring itself forward into the 21 st Century. The process started in 1993 and includes significant modifications/ replacement/modernization of the HVAC systems.

Simulation techniques for designing passive cooling of historical buildings.

This research is based upon an examination of the natural cooling of the large reading room of the Bernardini(tm) Library in Lecce, Italy. The library is contained in an old building which is currently under restoration. Both indoor and outdoor temperatures as well as relative humidity were monitored, so that the most appropriate system to cool the library's large reading room in summer could be selected. The external walls were endoscopically investigated. Air is supplied by a displacement ventilation system and a system of buried pipes has been designed.