Abstract
The results of measurements on pollutant concentration conditions in a ventilated room using traditional tracer gas methods illustrate how air exchange and pollution conditions can be registered in a satisfactory manner. The determination of air exchange in a room will depend on the location of the points of measurement and differences in results can vary to quite a high degree. The best measuring points are located at outlets or are evenly distributed about the room. Differences in concentration depend on the location of tracer gas sources and flow rates in the room. These sources should be placed where flow rates and air exchange rates are high as tracer gas is then mixed into the air flow and is quickly transported around the room. Flow conditions change when air exchange changes and the most uniform concentration conditions occur in relation to a greater extent of air exchange. Concentrations at individual measuring points fluctuate around a constant average value and the extent of the fluctuations are dependent on the mixing of the tracer gas with the air in the room. Tracer gas from a jet results in a satisfactory mixing and small fluctuations. In some situations average concentrations can be 3-4 times
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Citation Formats
Heiselberg, P.
A laboratory investigation of pollution distribution in a room; En laboratorieundersoegelse af forureningsfordelingen i et lokale.
Denmark: N. p.,
1992.
Web.
Heiselberg, P.
A laboratory investigation of pollution distribution in a room; En laboratorieundersoegelse af forureningsfordelingen i et lokale.
Denmark.
Heiselberg, P.
1992.
"A laboratory investigation of pollution distribution in a room; En laboratorieundersoegelse af forureningsfordelingen i et lokale."
Denmark.
@misc{etde_10122973,
title = {A laboratory investigation of pollution distribution in a room; En laboratorieundersoegelse af forureningsfordelingen i et lokale}
author = {Heiselberg, P}
abstractNote = {The results of measurements on pollutant concentration conditions in a ventilated room using traditional tracer gas methods illustrate how air exchange and pollution conditions can be registered in a satisfactory manner. The determination of air exchange in a room will depend on the location of the points of measurement and differences in results can vary to quite a high degree. The best measuring points are located at outlets or are evenly distributed about the room. Differences in concentration depend on the location of tracer gas sources and flow rates in the room. These sources should be placed where flow rates and air exchange rates are high as tracer gas is then mixed into the air flow and is quickly transported around the room. Flow conditions change when air exchange changes and the most uniform concentration conditions occur in relation to a greater extent of air exchange. Concentrations at individual measuring points fluctuate around a constant average value and the extent of the fluctuations are dependent on the mixing of the tracer gas with the air in the room. Tracer gas from a jet results in a satisfactory mixing and small fluctuations. In some situations average concentrations can be 3-4 times as much at the inlet and maximum concentrations can be 8-10 times the concentration at the outlet. (AB)}
place = {Denmark}
year = {1992}
month = {Feb}
}
title = {A laboratory investigation of pollution distribution in a room; En laboratorieundersoegelse af forureningsfordelingen i et lokale}
author = {Heiselberg, P}
abstractNote = {The results of measurements on pollutant concentration conditions in a ventilated room using traditional tracer gas methods illustrate how air exchange and pollution conditions can be registered in a satisfactory manner. The determination of air exchange in a room will depend on the location of the points of measurement and differences in results can vary to quite a high degree. The best measuring points are located at outlets or are evenly distributed about the room. Differences in concentration depend on the location of tracer gas sources and flow rates in the room. These sources should be placed where flow rates and air exchange rates are high as tracer gas is then mixed into the air flow and is quickly transported around the room. Flow conditions change when air exchange changes and the most uniform concentration conditions occur in relation to a greater extent of air exchange. Concentrations at individual measuring points fluctuate around a constant average value and the extent of the fluctuations are dependent on the mixing of the tracer gas with the air in the room. Tracer gas from a jet results in a satisfactory mixing and small fluctuations. In some situations average concentrations can be 3-4 times as much at the inlet and maximum concentrations can be 8-10 times the concentration at the outlet. (AB)}
place = {Denmark}
year = {1992}
month = {Feb}
}