LoginA 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.
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
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 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.
This paper reports on ventilation measurements taken beneath a suspended timber floor of a BRE/DoE energy and environment test house.
The idea that intend temperatures can be reduced by ventilating the air-space between the ceiling and the roof (the attic) of a house, is widely acknowledged by Civil Engineers and Architects.
This paper investigates possible natural ventilation strategies to reduce exposure to environmental tobacco smoke (ETS) in dwellings.
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 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.
The UK factory stock is predominantly naturally ventilated.
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.
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.
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
Four classrooms of two secondary schools located around Lyon in France have been monitored.
Blower Doors are used to measure the air tightness and air leakage of building envelopes.
The system of decentralized apartment ventilation has been successfully used for several years in multiple-storey apartment construction in the Federal Republic of Germany.
The Building Research Establishment has set up various passive stack ventilation systems (PSV) in a test house in order to assess their performance. The test house used was a two storey, end terrace dwelling on the BRE site at Garston.