LoginA unique multiple tracer experimental system has been developed and utilized within commercial buildings to monitor ventilation rates, air exchange efficiency, ages of air (at multiple indoor locations), flow rates of supply and outside air, and p
9th AIVC Conference - Gent, Belgium - 12-15 September 1988
The 9th AIVC Conference - Effective ventilation, was held in Gent, Belgium, 12-15 September 1988.
Contains 44 papers.
Volume content
This paper presents an analysis of indoor climate in buildings with forced air heating systems. The results is based on indoor climate measurements and extensive interviews with the occupants.
This paper deals with field experience of airborne moisture transfer problems in houses. Two types of phenomena are discussed in more detail; the infiltration of moist air from crawl spaces and the propagation of moist air produced in kitchens.
The specific value of different flows resulting from air exchanges between rooms or with the outside is not always important. An extensive model is not suitable when only estimations or tendencies have to be drawn (very time consuming).
In displacement ventilation systems, air flow rates, temperature and the design of the air supply device strongly influence the parameters which decide the thermal comfort.
The paper describes measuring results of the air movement from three different types of diffusers for displacement ventilation. Two of the diffusers are lowlevel wall mounted diffusers, one with a low and one with a high initial entrainment.
This paper reviews research activities undertaken in the framework of IEA Annex XIV, "Energy and Condensation". It outlines the objectives and working scheme.
An element-assembly formulation of multi-zone contaminant dispersal analysis theory is described.
This paper tries to give a reasonable description of the state of the art of the Belgian building stock with regard to ventilation.
Outdoor air pollution can have a bearing on the effectiveness of indoor air and the quality of ventilation. There is a pressing need to reflect on the potential type and effect of occurrences (e.g.
The use of a guarded zone pressurization technique to measure air flow permeabilities of a multizone building. | 1988 | English
In the past few years, research efforts have been made to acquire accurate knowledge about infiltration and ventilation in multi-zone buildings.
Analysis of the influence of topography on climatic exposure of buildings (Climatological Data). | 1988 | English
This text contains comments to the poster presented at the 9th AlVC Conference in Gent, Belgium.
Development of an efficient control algorithm for a multizone constant concentration tracer gas air infiltration measurement system. | 1988 | English
A constant concentration tracer gas (CCTG) measuring system needs a control algorithm to calculate, at each sampling time, the required tracer gas injection rate to keep the gas concentration at a target level.
In the framework of a project of the International Energy Agency (IEA) , IEA-Annex XVIII - Demand Controlled Ventilating (DCV) Systems, which started in fall 1987, a review of the state of the art of already existing DCV systems and devices has be
An experimental study in reduced scale model for ventilation inside a sheep-fold has been studied.
Indoor formaldyhyde levels in energy efficient homes with mechnical ventilation systems. | 1988 | English
Mechanical ventilation systems have been adopted in airtight energy- efficient houses in Canada to provide fresh air, remove moisture and indoor pollutants and provide a comfortable environment for the home-occupants.
The technique of tracer gas measurement has during recent years tended towards increasingly complicated measuring methods.
Further studies of passive ventilation systems - assessment of design and performance criteria. | 1988 | English
Increases in building air tightness for purposes of energy saving have, unfortunately, also led to a significant increase in the number of instances of condensation damage, particularly in domestic properties.
The ventilation of a test room (LxWxH = 5.4x3.6x2.4 m) with a wall mounted heat source is investigated for two different air terminal devices.
Air leakage through the building envelope is of great importance for the energy use of a building. However, from an indoor air quality standpoint, the size of interior leaks in e.g. multifamily buildings could be important as e.g.