LoginAir 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.
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
Traditionally air has been supplied from the ceiling to the occupants below opposing the buoyancy effects due to heat convected from people, lights and machines.
Examinations about the air humidity in lived dwellings depending on different air ventilation systems using a new characteristic value. | 1988 | English
This work deals with problems of the air humidity in inhabited dwellings. A new approach is presented here which renders the definite diagnosis of humidity problems possible.
Ventilation produced by fluctuating pressure differences across a building appears to have received little attention . Such fluctuations are produced by gustiness of the wind or turbulence in the flow around a building.
This paper describes a two-dimensional numerical study, by finite-volume method of buoyancy-driven flow in a half-scale model of a stairwell.
The project is aimed to develop the quantitative method of visualization of the air steams in application to the indoor problems of heauilg , ventilating and air conditioning.
The influence of a controlled natural ventilation on the indoor radon decay products concentration: a case study. | 1988 | English
Air exchange rates in occupied buildings are difficult to assess due to their dependence on a multitude of climatic parameters and inhabitant behaviour.
This paper is concerned with natural air flows between major construction cavities in New Zealand houses.
Numerical simulation of indoor turbulent air flows caused by cross-ventilation and its model experiments. | 1988 | English
Since thermal comfort on human body is influenced by the local air flow speed, it is needed to estimate the distribution of air flow speed in a room for the "effective ventilation".
The paper presents the development of a ventilation scheme for a large bus station and passenger interchange in Bilbao, Spain.
Analysis of errors for a fan-pressurization technique for measuring interzonal air leakage. | 1988 | English
The problem of predicting air flows in a multi-zone building has received considerable attention in the past ten years.
To avoid the shortcomings and problems that occur in today's ventilation systems a ventilation concept for future dwelling-houses is under development. The concept responds to the way of living and building in the future.
Zone to zone tracer gas measurements; laboratory calibration and values of air flows up and down stairs in houses. | 1988 | English
This work is concerned with measuring air flows between the floors of houses. A simple measuring technique is described in which two portable SF6 systems were employed. The design and construction of the portable system are presented.
Natural ventilation for crown court: developing statistical assessment techniques at the design stage. | 1988 | English
The ventilation performance of a proposed naturally-ventilated court-room was predicted and assessed on a statistical basis with regard to the local meteorological conditions.
A 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
Infiltration heat losses due to heating appliances located within the living space are normally evaluated by reducing the conversion efficiency of the boiler, with no consideration for the fluid dynamic interaction between boiler, chimney and buil
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.
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 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).