LoginThis paper presents ozone removal efficiencies, measured over an extended period of time, inthree different settings: a test plenum, an air handler providing outdoor air to a Class 100cleanroom, and a plenum downstream of an air handler providing
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
Volume content
The aim of this study is to illustrate the importance of the effects of wind turbulence on airchange in buildings.
A number of studies have shown that approximately 1 in 10 hospital in-patients will acquire a nosocomial infection (NI) '*).These infections are associated with significant mortality rates, and have a large economic impact on health care systems.
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.
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.
The paper presents the results of the tests of two-zone airflow pattern forming in a room with displacement ventilation where various heat sources and various airflow rates were tested.
Removal of VOC by photocatalytic degradation involving photochemical reaction with O3 under short-wavelength UV irradiation. | 1999 | English
Photocatalytic degradation of volatile organic compounds (VOC) with short-wavelength UVlight (254 nm) is an attractive technique in the view of perfect mineralization to CO2.
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
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.
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.
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.
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.
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 paper presents results from the numerical modelling of the flow field in an existing ventilated office room.
Particle deposition from turbulent duct flow is modelled and related to particle penetration of a ventilation system for a commercial office building.
Ventilation efficiencies of task/ambient conditioning systems with desk-mounted air supplies. | 1999 | English
In laboratory experiments, we investigated the ability of two task/ambient conditioningsystems with air supplied from desk-mounted air outlets to efficiently ventilate the breathingzone of heated manikins seated at desks.
In the beginning of 1998 the European project, AIRLESS, was started to develop strategies,principles and protocols to improve and control the petiormance of HVAC-systems and itscomponents for the incorporation in codes and guidelines.