LoginMeasurements of interzone airflow and movement of aerosol particles were carried out in an environmental chamber. SF tracer gas and oil-smoke particles were used for this work.
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
Tracer-gas techniques are widely used for measurement of airflow in buildings and their accuracy depends critically on the uniformity of tracerlair mixing.
The main goals for this design tool are: - A powerful, but simple to use, technical and economic tool for selecting a ventilation plant. - Guide and control the consultants in accordance with the owner's economic preferences.
Simulation is proving more and more important in building physics. Programs of different levels of complexity are today available for researchers and designers to model and plan buildings.
This paper is concerned with measurement of air and aerosol particle exchange efficiency in a single zone chamber. Aerosol particles and tracer gases were injected into the chamber and their concentrations were monitored as a funtion of time.
A suggested standard methodology for the assessment of the performance of domestic ventilation systems. | 1994 | English
The monitoring of the performance of domestic ventilation systems is quite a complex exercise.
One important aim for the development of new air conditioning systems is the reduction of the total energy consumption.
This paper presents the results of a monitoring programme on a medium sized educational building which has had the external walls re-clad.
In the UK the increased use of natural ventilation in buildings is being encouraged, particularly during hot weather as an alternative to air conditioning or mechanical ventilation.
The present case study refers to a larger office building in Sweden. The employees in this building, which was built in 1982, began to complain about the indoor environment around 1985-86.
A Test House at EA Technology, Capenhurst, has been refurbished to provide a ventilation test facility.
Two-zones model for predicting passive stack ventilation in multi-storey dwellings. | 1994 | English
Proper dimensioning of natural ventilation system for multi-storey buildings is a critical matter, because the air flow rate depends on many parameters as outdoor temperature, wind, distribution of air inlets and envelope air leakage, characterist
lnadequate ventilation is often cited as the cause of unhealthy air quality within office buildings, whilst excessive ventilation is similarly assumed to be the cause of discomfort and energy waste.
The aim of this study was to unravel the occupational exposure to radon among underground workers. The possibility for radon mitigation by improving ventilation or by sealing was also investigated.
The fan and the ductnetwork is designed for 100% ventilation rate. Because the fan energy is the main important energy consumption in systems all over the year it is worthwhile to control the systems correctly.
The adequate ventilation of houses is essential for both the occupants and the building fabric. As air-tightness standards increase, background infiltration levels decrease and extra ventilation has to be designed into the building.
Investigation of ventilation conditions in naturally ventilated single family houses. | 1994 | English
The reason for the present project is the need for more reliable information about the actual ventilation conditions in naturally ventilated, detached houses.
Ventilation concept, indoor air quality and measurement results in the "Passivhaus Kranichstein". | 1994 | English
The "Passivhaus Darmstadt-Kranichstein" is a 4 unit terrace house with an extremely low total annual energy consumption of less than 32 kWh/m² of living area, thereof about 12 kWh are needed for room heating /Feist 1994/.
A measurement system is described to record the movement in a room of neutral density balloons or bubbles, and thus the movement of air in that room.
Role and tasks of ventilation in modern buildings: a case study for Silesian dwelling houses. | 1994 | English
The paper presents some selected results of evaluation of improvement effectiveness of thermal insulation and tightness of multifamily dwelling houses located in the region of Silesia.