LoginVentilation systems using variable airflow are useful in urban areas. Due to outdoor pollutionand the indoor load from pollution or thermal sources, it is important to vary the airflow.
19th AIVC Conference - Oslo, Norway - 28-30 September 1998
The 19th AIVC Conference, Ventilation Technologies in Urban Areas, was held in Oslo, Norway, 28-30 September 1998.
Contains 55 papers
Volume content
Displacement ventilation in a classroom - influence of contaminant positioning and physical activity. | 1998 | English
This study describes how the air quality in a displacement ventilated classroom can beinfluenced by the position of a contaminating person, and by the activity of a person who walksaround in the room.
Evaluation of thermal performances of residential ventilation systems with heat recovery. | 1998 | English
Ventilation systems with heat recovery offer several advantages such as, of course, energy savings but also the possibility to add acoustic and filtration treatment.
The paper describes the results of a Pan-European survey carried out on identifying thebarriers that restrict the implementation of natural or simple fan-assisted ventilation systems inthe design of new office-type buildings and in the refurbishme
This paper is concerned with heat and mass transfer through two typical staircases, The firststaircase connects the two individual floors of a two-storey building, and the other connectsthe three individual floors of a three-storey building.
Today, the development of new technologies to improve building envelope performances ishighly encouraged and provides a clear challenge for designers and researchers. In thiscontext several typologies of active envelopes have become very popular.
A systematic analysis of recently constructed dwellings in the Flemish Region has beenundertaken within the SENVIVV-project (1 995- 1998) [I]. In total 200 dwellings have beenexamined in detail.
Reentrainment of pollutants from exhausted air - discussion of different types of regulatory requirements. | 1998 | English
In many existing ventilation systems unintentional reentrainment of pollutant, due to improper location of exhaust and air intake, decreases quality of indoor environment.
Building performance evaluation for indoor air quality using occupant contaminant inhalation and attribution to contaminant sources. | 1998 | English
The emissions of building materials like volatile organic compounds and indoor airbornecontaminants such as environmental tobacco smoke expose occupants to hazardowsubstances.
Modern passive stack and ventilated schools - evaluation of ventilation and moisture conditions. | 1998 | English
The aim has been to determine ventilation rates and risk of moisture damage in three modernschools with passive stack ventilation.
The present paper discusses issues related to the potential of natuml ventilation techniques whenapplied to urban environment and in particular to buildings located in canyons.
On the time-dependant efficiency of building ventilation on the indoor air quality in a medium sized urban area in Greece. | 1998 | English
From an air pollution study in a medium-sized, seaside town in Central Greece (Volos) it wasfound that some common air pollutants (CO, NO, NOx, SO,, 0,), whose emissions are connectedto activities and conditions that reveal some characteristics of
The Finnish Society of Indoor Air Quality and Climate has prepared a proposal for the classification of the cleanliness of new ventilation systems and components.
Heat recovery in ventilation systems for office buildings in cold climates is necessary for tworeasons:1. To obtain acceptable indoor thermal comfort by preheating of fresh air,2.
Analytical solutions are derived for calculating natural ventilation flow rates in a single-zone building with two openings when no thermal mass is present.
Modelling of indoor pollutant concentrations that varies in time can be a useful tool forestimation of the strength of internal sources and sinks. Usually the modelling has beencarried out using one zone, i.e.
The Swedish Parliament decided 1991 that ventilation systems in all non-industrial buildingsshould be regularly inspected in intervals from 2 to 9 years, shortest for schools, hospitals etcand longest for natural ventilated flats.
Natural ventilation in office-type buildings - results and conclusions of monitoring activities. | 1998 | English
Since the beginning of this decade, natural ventilation in office buildings has been receiving specific interest. There are two sorts of application. Natural ventilation can be a strategy for indoor air quality control.
Infiltration has traditionally been assumed to affect the energy load of a building by an amount equal to the product of the infiltration flow rate and the enthalpy difference between inside and outside.
Airtightness measurements are not yet common in the Italian dwelling stock. In the frameworkof the MICA-ENEA contract, three dwellings were chosen to study the energy performanceon the influence of natural agents.