English

The potential for draught discomfort and high air velocities in the occupied zone are often studied with only cooling design in mind. During the transition season, however, downward flows with high air velocities may occur in the occupied zone due to cold window surfaces. Airflow generated by supply air terminal dervices may further enhence the velocity in the occupied zone. Furthermore, convection flows caused by thermal loads may significantly affect the air flow conditions in the room as a whole and assist the occurance of high velocity near occupants.

The aim of that paper was to provide input data to design and energy performance calculations of buildings and ventilation, heating, cooling and lighting systems. The new standard has been developed based on existing international standards and guidelines for the indoor environment.

The aim of this paper is to present parameters of a new design code, which is intended to control the indoor air environment for sports buildings in China. The characteristics of indoor airflow include the parameters of indoor air environment of gymnasiums and natatoriums, air velocity, temperature, humidity and fresh air volume.

For that paper, twelve flights from 4.4 to 6.5 hours in duration, on Boeing 767 aircraft were evaluated. During those flights operations, two air cooling packs and 50 % recirculation rate were used and operated efficiently to remove fungal spores The data demonstrate the importance of passenger activity as the source of fungi observed on aircraft.

A numerical method to evaluate the intensities of pollutant sources is presented in this paper along with a reconstruction of the associated concentration field at every point of a ventilated enclosure containing one or several pollutant sources of unknown emission rate.

The aim of this paper was to develop and describe a new flow equation, and to compare it to the currently accepted ones by W.C.L. Hemeon in 1955, and the American Conference of Governmental Industrial Hygienists (ACGIH). For the comparison of the solutions, numerical assessments have been conducted. Results are presented.

Fire and smoke movement quantitative data cannot be obtained directly from a building fire accident. To obtain a great deal of information for fire study, computational methods are used. For that study two types of fire simulation software, CFAST and FDS have been used for the reconstruction of a motorcycle shop fire in Taiwan. Through numerical simulations important thermodynamic parameters during the fire have been obtained and the impact of natural/forced ventilation on the fire has been studied too . Results are presented.

For that study, the characteristic of airborne bacteria and fungi have been surveyed in the public buildings (kindergarten, hospital, postpartum nurse center, and elderly welfare facility) regulated in Korea, with the six-stage cascade compactor. The ratios of total and respirable concentrations of airborne bacteria and fungi have been measured and the types of dominant genera listed. The results and conclusions are presented.

In that paper, the effectiveness of ventilation flows is considered from the perspective of buoyancy (or heat) removal from a space.Three new measures of effectiveness are proposed : they are based on the ability of a flow to flush buoyancy from a ventilated space. Their applications are presented.

Based on the previous study by Yang et al., the authors developed a revised model to estimate the potential for natural-ventilation considering both thermal comfort and IAQ issues for buildings in China. That model differs for two aspects : indoor air temperature varies synchronously with the outdoor air rather than staying at a constant value as assumed by Yang & al., and thermal comfort evaluation index is integrated into the model.