the natural ventilation is an easy way to exchange the indoor polluted warm air with outdoor fresh air. the wind power injects outdoor fresh air into the building. a good indoor air current and subsequently a proper exhaust depend on the openings’ conditions and their situations. a serious architectural question is under what conditions of the openings the wind-cross ventilation can be effectiv...

This paper describes two recent applications of aerosol sealing techniques in buildings for improving indoor air quality and reducing energy required for heating, cooling, and ventilation. One application applies a commercially-available duct sealing technology, which has typically been used in single-family applications, to large-building exhaust systems. The initial leakage rates, percent lea...

We conducted aerial fixed wing ultra low volume (ULV) spray trials with naled to investigate penetration of exposed and simulated cryptic habitat within opened buildings, partially sealed buildings, and outdoor locations targeting sentinel adult Aedes aegypti mosquitoes in north central Florida. Mortality was observed in open and closed buildings and outdoors, even in mosquitoes placed in crypt...

After World War II, the advent of central air conditioning and its progeny, the sealed building, made natural ventilation an anachronism. Today it is making a comeback, however, owing to rising energy costs and the worldwide movement toward buildings that employ “green” strategies. Architects and engineers, mostly in England, are using advanced computer and modeling Use the following learning o...

This paper presents investigative results of the energy efficiency of hot water production for sanitary uses by means of gas-fired water heaters with the combustion chamber sealed with respect to the room in single-family houses and multi-story buildings. Additionally, calculations were made of the influence of pre-heating the air for combustion in the chimney and air supply system on the energ...

Abstract Purpose Urbanisation causes changes in land use, from natural or rural to urban, leading the sealing of soil and replacement vegetation by buildings, roads pavements. The process impacts properties services can lead negative consequences for microbial attributes processes soil. At present, information about community following is limited. As such, we investigated how physical chemical ...

Hermetic pressurized buildings have been developed to reduce the effects of high altitude. The behavior and effect fire in this new type building not studied before. Unlike common buildings, inside pressure is maintained at around standard atmospheric pressure, which significantly higher than outside environment altitude regions. In addition, early stage a fire, oxygen required maintain combust...

UNLABELLED Surveys suggest that transfer of secondhand smoke (SHS) between units in multiunit residential buildings is common, but measured data are rare. This study was undertaken to quantify bulk air transfer between units and document transfer of SHS species before and after treatments that sealed boundaries between units and provided a minimum amount of continuous exhaust ventilation of eac...

Accepted 26 September 1995 Abstract Objective-To find if the prevalence of symptoms associated with sick building syndrome decreased among office workers after moving to a building with improved ventilation (after controlling for potential confounders). Methods-Workers in five buildings in 1991 all moved in 1992 into a single building with improved design, operation, and maintenance ofthe venti...