LoginAs a result of the "Sick Building Syndrome" (SBS) the confidence of operators of office buildings into HVAC technologies has suffered a considerable drop.
15th AIVC Conference - Buxton, UK - 27-30 September 1994
The 15th AIVC Conference - The Role of Ventilation, was held in Buxton, UK, 27-30 September 1994.
Contains 75 papers.
Volume content
A series of laboratory experiments are described which investigated the effect of surface roughness on the air flow characteristics of simple, straight-through, no-bend cracks with smooth and rough internal surfaces.
In many design cases, energy as well as occupant comfort are the relevant criteria which are studied using computer simulation programs. Comfort evaluations cover air quality, thermal, visual and acoustical comfort.
Determination of k-factors of HVAC system components using measurements and CFD modelling. | 1994 | English
Indoor air quality, comfort and energy use in buildings are largely dependent on the performance of HVAC systems. However, the pressure loss factors available to the designer show large discrepancies depending on the source of the data.
The Air Lock Floor and the Pressure Ring are two effective measures for control of air flow directions between rooms or zones in buildings. They create a pressure hierarchy that controls spread of pollutants.
This paper reports on ventilation measurements taken beneath a suspended timber floor of a BRE/DoE energy and environment test house.
This paper discusses four concepts that have been found useful in improving estimates of ventilation rates in residential buildings. These concepts are improved methods for describing leakage distribution and wind pressures: 1.
The acquisition of temperatures and velocities is a permanent recurrent task for the investigation of air flow in ventilated rooms. On the one hand it is important to measure the temperature and velocity field with a high spatial resolution.
A design guide for displacement ventilation (thermally induced ventilation ) has been prepared. It is based on quasi stationary experiments carried out in the Sulzer Infra laboratory in Winterthur.
BRE have experimental data for the flows found in Passive Stack Ventilation (PSV) ducts from a test house in Garston.
The role of ventilation in controlling the dispersion of radon gas from a cellar in a domestic house. | 1994 | English
In certain parts of the United Kingdom where radon gas seeps from the ground into the basement of domestic housing, normal methods of removing this gas by using under floor extract ventilation is not appropriate.
The aim of the study was to identify methods for the renovation of ventilation systems in domestic buildings which are 3 - 8 storeys high. Three typical buildings were selected and the problems in ventilation were examined.
Application of a multi-zone airflow and contaminant dispersal model to indoor air quality control in residential buildings. | 1994 | English
A new multizone airflow and contaminant dispersal model CONTAM93 is described, along with a demonstration of its application in a study of ventilation and contaminant control in single-family residential buildings.
The airflow between a warm room and cool exterior can be significantly affected by an external headwind. Pollutant concentrations within the space depend on the relative sizes of the wind and the undisturbed stack driven flow.
The relative energy use of PSV and extract fans has been a matter of considerable controversy, particularly in the UK.
The UK factory stock is predominantly naturally ventilated.
In recent years plants have increasingly become an integral part of building interior design. Greened office space and large enclosures can provide a better human environment not only because of psychological reasons.
The paper is presenting experience from a several year long time of operation in a group of apartment buildings in the Stockholm area, Sweden, having an extremely low energy usage, less that 110kWh/(m2.year), electricity supply to the building ser
Determination of local mean ages of air by the homogeneous injection tracer gas technique. | 1994 | English
The paper describes the application of a new tracer gas technique for studying ventilation.
Four classrooms of two secondary schools located around Lyon in France have been monitored.