LoginThe main goal of a research project on wind barriers was to get more information about the influence of wind pressure on the heat loss from wood frame constructions.
8th AIVC Conference - Ueberlingen, West Germany - 21-24 September 1987
The 8th AIVC Conference - Ventilation technology research and application, was held in Ueberlingen, West Germany, 21-24 September 1987.
Contains 40 papers
Volume content
When carrying out pressure tests of models of multi-story buildings in The Boundary Layer Wind Tunnel, the external mean and RMS pressures are measured at 400 to 800 different locations over the building surface.
A simplified model of air infiltration has been developed at Lawrence Berkeley Laboratory, in order to expand the use of air flow calculation techniques outside the field of research. The validity of the programme must be checked.
The construction and performance of a dynamic wall house are described. It is suggested that such houses function much like the traditional houses with leaky walls and active chimneys.
Sections include: measuring procedure air tightness of facades; evaluation of measuring air tightness in practice; infrared thermography; thermographical research in air tightness, ability to detect air tightness deficiencies with thermography; ab
In order to avoid demage to the health of occupants, annoyance or reduction in amenity and demage to the building fabric the concentration of indoor air pollutants has to be held below pollutant specific levels.
Developments in a multi-tracer gas system and measurements using portable SF6 equipment. | 1987 | English
In this paper we describe the development of a multi-tracer gas system for measuring interzonal air movement in buildings. The system consists of simple and stand-alone gas injectors and sampling units.
A study has been made, both experimentally and analytically, on the characteristics of thermal performance of high-rise buildings using a simulated model building with five floors and a number of exterior openings under various temperature distrib
The actual heating load of a building differs often from the designed load. One reason for this is the uncontrolled ventilation through a building envelope.
Ventilation has a considerable influence on both the indoor air quality and energy consumption of buildings.
Air change rates are measured by an IR-gas-analyser coupled with a microcomputer which is programmed to control measurements as well as data acquisition and evaluation. The implemented programs provide an instant access to results.
Applications of a simplified model for predicting air flows in multizone structures. | 1987 | English
A simplified pocket calculator model has been developed which can simulate the air flow distribution in multizone structures.
For more than four years air infiltration measurements have been made on two nearly identical side-by-side test houses in Gaithersburg, Maryland, USA.
Measurements of the air temperature and air velocity were carried out in four buildings without air-conditioning using a newly developed anemometer whose sensitivity allows the examination of the dynamic behaviour of air movements.
An overview of the R-2000 home program design and installation guidelines for ventilation systems. | 1987 | English
This paper outlines the development of guidelines for the design and installation of ventilation systems installed in energy efficient homes constructed under the R-2000 Home Program of Energy, Mines and Resources Canada.
When controlling the performance of a ventilation system it is important to investigate how the system works together with the building it ventilates.
This paper describes one of the results of the IEA-annex 8 "Inhabitants behaviour with regard to ventilation". Annex 8 has shown that the occupants can play a rather important role with regard to the ventilation rates inoccupied buildings.
A six channel, computer controlled, tracer gas detection system for the measurement of infiltration rates and air movement in large single-cell industrial buildings has been designed, constructed and calibrated.
It has been estimated that 15% of the energy used for building services in the United Kingdom is consumed in industrial buildings. A large proportion of this is thought to relate to infiltration and ventilation.
Calculation of air infiltration in a large number of cases can give information of expected variations in yearly air change and energy consumptions. As model is used the equivalent leakage area model written in a spreadsheet computer program.