The need to separate impurities from air or other gases has increased as regards both the degree of separation and the necessity to separate finer particles.
20th AIVC and Indoor Air 99 Conference - Edinburgh, Scotland - 9-13 September 1999
The 20th AIVC and Indoor Air 99 Conference, Ventilation and indoor air quality in buildings, was held in Edinburgh , Scotland, 9-13 August 1999.
Contains 141 papers
Ventilation and indoor air quality in five Estonian residential buildings: a comparison with Scandinavian conditions. | 1999 | English
Measurements of ventilation rates and indoor climate parameters were carried out in fiveEstonian residential buildings.
Models are presented for describing the performance of room air cleaners in removing pollutants from indoor air, particularly the levels of removal that can be achieved in practice.
Snow has already been used effectively as a cold energy resource in some heavy snowfall areasin Japan.
In order to explain the effect of heat recovery on a passive ventilation system using stack effect, and to show the factors and conditions that the heat-recovery system can be installed in a passive ventilation system, the following investigations
Improving indoor air quality in dental practices and certain hospital environments with stand-alone air purification systems. | 1999 | English
The goal of this study was to investigate the effectiveness of stand-alone modular airpurification systems in improving air quality in dental practices and certain hospital andlaboratory environments.
A test rig for long-term tests of activated carbon filters was developed consisting of eight parallel test-filter sections. The test-rig was installed on the roof of a six storey commercial building located in the centre of Goteborg, Sweden.
Infiltration and ventilation measurements on three electrically heated multifamily buildings. | 1999 | English
In recent years, increasing importance has been placed on energy efficiency in residentialbuildings. This has resulted in tighter buildings, which raises concerns about the amount ofventilation required to provide acceptable indoor air quality.
Hybrid air conditioning based on natural and mechanical ventilation in office buildings. | 1999 | English
The performance of a hybrid air-conditioning system which utilises wind-induced cross ventilation is investigated.
Comparisons of microorganism loading from two air filter materials during the first eight weeks of service life. | 1999 | English
As part of an ongoing investigation on service life of air filtration material, a new type of airfiltration material (multi-layered polymer) was compared with a widely used material todetermine growth or survival of micro-organisms after normal du
The effect of surrounding ground conditions and ventilation rates on the internal environment of traditional excavated dwellings in Santorini, Greece. | 1999 | English
This paper deals with the internal environment of traditional excavated dwellings in Santoriniand the effect the conditions of the surrounding volcanic rock have on it.
Destruction of VOC using photocatalyst under UC light irradiation - the influence of UV wavelength on mineralisation. | 1999 | English
Avariety of gaseous pollutants in indoor air now are becoming an object to control.
Forced air furnaces are a common Canadian heating system. Traditionally, filters placed in thecirculating air ductwork were designed to protect the furnace and fans.
The Building Components Technology Department of ICITE, the Central Institute forIndustrialization and Technology in Building of the Italian National Research Council hasstarted an experimental research on natural controlled ventilation devices.To
Factors influencing effectiveness of ultraviolet germicidal irradiation for inactivating airborne bacteria: air mixing and ventilation efficiency. | 1999 | English
As a result of the recent resurgence in tuberculosis incidence, there has been increased interestin using ultraviolet germicidal irradiation (UVGI) of room air to reduce exposures toinfectious agents.
Formaldehyde (FA) adsorption, including that in the presence of water vapours, has been evaluated on adsorbents of various nature and porous structure.
Experimental measurements and characteristics of the supply air "ventilated" window. | 1999 | English
A currently unresolved problem in building design in the paradox between increasing demand for good thermal insulation, and the requirement for ample levels of ventilation, to maintain a healthy indoor environment.
Effects of ultraviolet germicidal irradiation of room air on airborne bacteria and mycobacteria. | 1999 | English
As a result of the recent resurgence in tuberculosis (TB), there has been renewed interest inengineering controls to reduce the spread of TB and other airborne infectious diseases in highrisk settings.
It is recommended to keep the ventilation filters dry. However there are manyventilating systems that cannot fulfil this requirement all the time.
Numerical determination of the effective depth for single-sided natural ventilation. | 1999 | English
This paper describes a numerical method for the determination of the effective depth of fresh air distribution in rooms with single-sided natural ventilation. The numerical method involves predicting air flow and the local mean age of air.