Measurement of the Air Chance Rate and Ventilation Characteristics During Short Term Transient Phenomena

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskning

Resumé

Different measurement procedures are available for the experimental assessment of air change rates inside ventilated enclosures. These mainly consist of tracer gas techniques and can usually be applied to steady-state or moderately transient conditions and when a continous mixing of the indoor air is assured throughout the test. However, due to the relatively slow response of the gas analysers, none of these procedures can usually be applied to fast transient phenomena that last 15 minutes or less. Moreover in many cases of natural ventilation strategies, the continuous mixing of the indoor air would compromise and interfere with the ongoing ventilation process. In this work, a modified tracer gas technique that is suitable to experimentally assess the transient features of the ventilation performances during these phenomena is proposed and tested for the case of buoyancy driven single-sided natural ventilation. The results are critically compared with the air flow rates assessed through anemometric measurements. The measurement features, limitations, shortcomings and uncertainties are also discussed.
OriginalsprogEngelsk
TitelProceedings of ROOMVENT 2004, 9th International Conference on Air Distribution in Rooms, September 5-8, 2004, Coimbra, Portugal
RedaktørerM. C. Gameiro Da Silva
Antal sider10
Publikationsdato2004
ISBN (Trykt)972-97973-1-5
StatusUdgivet - 2004
BegivenhedMeasurement of the Air Chance Rate and Ventilation Characteristics During Short Term Transient Phenomena -
Varighed: 19 maj 2010 → …

Konference

KonferenceMeasurement of the Air Chance Rate and Ventilation Characteristics During Short Term Transient Phenomena
Periode19/05/2010 → …

Fingerprint

Ventilation
Air
Gases
Buoyancy
Enclosures
Flow rate

Bibliografisk note

Publiceret på cd-rom
Published on cd-rom
ISSN ; -

Emneord

  • Tracer Gas Techniques
  • Air Change Measurement
  • Natural Ventilation

Citer dette

Heiselberg, P. K., & Perino, M. (2004). Measurement of the Air Chance Rate and Ventilation Characteristics During Short Term Transient Phenomena. I M. C. G. Da Silva (red.), Proceedings of ROOMVENT 2004, 9th International Conference on Air Distribution in Rooms, September 5-8, 2004, Coimbra, Portugal
Heiselberg, Per Kvols ; Perino, M. / Measurement of the Air Chance Rate and Ventilation Characteristics During Short Term Transient Phenomena. Proceedings of ROOMVENT 2004, 9th International Conference on Air Distribution in Rooms, September 5-8, 2004, Coimbra, Portugal. red. / M. C. Gameiro Da Silva. 2004.
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abstract = "Different measurement procedures are available for the experimental assessment of air change rates inside ventilated enclosures. These mainly consist of tracer gas techniques and can usually be applied to steady-state or moderately transient conditions and when a continous mixing of the indoor air is assured throughout the test. However, due to the relatively slow response of the gas analysers, none of these procedures can usually be applied to fast transient phenomena that last 15 minutes or less. Moreover in many cases of natural ventilation strategies, the continuous mixing of the indoor air would compromise and interfere with the ongoing ventilation process. In this work, a modified tracer gas technique that is suitable to experimentally assess the transient features of the ventilation performances during these phenomena is proposed and tested for the case of buoyancy driven single-sided natural ventilation. The results are critically compared with the air flow rates assessed through anemometric measurements. The measurement features, limitations, shortcomings and uncertainties are also discussed.",
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Heiselberg, PK & Perino, M 2004, Measurement of the Air Chance Rate and Ventilation Characteristics During Short Term Transient Phenomena. i MCG Da Silva (red.), Proceedings of ROOMVENT 2004, 9th International Conference on Air Distribution in Rooms, September 5-8, 2004, Coimbra, Portugal. Measurement of the Air Chance Rate and Ventilation Characteristics During Short Term Transient Phenomena, 19/05/2010.

Measurement of the Air Chance Rate and Ventilation Characteristics During Short Term Transient Phenomena. / Heiselberg, Per Kvols; Perino, M.

Proceedings of ROOMVENT 2004, 9th International Conference on Air Distribution in Rooms, September 5-8, 2004, Coimbra, Portugal. red. / M. C. Gameiro Da Silva. 2004.

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskning

TY - GEN

T1 - Measurement of the Air Chance Rate and Ventilation Characteristics During Short Term Transient Phenomena

AU - Heiselberg, Per Kvols

AU - Perino, M.

N1 - Publiceret på cd-rom Published on cd-rom ISSN ; -

PY - 2004

Y1 - 2004

N2 - Different measurement procedures are available for the experimental assessment of air change rates inside ventilated enclosures. These mainly consist of tracer gas techniques and can usually be applied to steady-state or moderately transient conditions and when a continous mixing of the indoor air is assured throughout the test. However, due to the relatively slow response of the gas analysers, none of these procedures can usually be applied to fast transient phenomena that last 15 minutes or less. Moreover in many cases of natural ventilation strategies, the continuous mixing of the indoor air would compromise and interfere with the ongoing ventilation process. In this work, a modified tracer gas technique that is suitable to experimentally assess the transient features of the ventilation performances during these phenomena is proposed and tested for the case of buoyancy driven single-sided natural ventilation. The results are critically compared with the air flow rates assessed through anemometric measurements. The measurement features, limitations, shortcomings and uncertainties are also discussed.

AB - Different measurement procedures are available for the experimental assessment of air change rates inside ventilated enclosures. These mainly consist of tracer gas techniques and can usually be applied to steady-state or moderately transient conditions and when a continous mixing of the indoor air is assured throughout the test. However, due to the relatively slow response of the gas analysers, none of these procedures can usually be applied to fast transient phenomena that last 15 minutes or less. Moreover in many cases of natural ventilation strategies, the continuous mixing of the indoor air would compromise and interfere with the ongoing ventilation process. In this work, a modified tracer gas technique that is suitable to experimentally assess the transient features of the ventilation performances during these phenomena is proposed and tested for the case of buoyancy driven single-sided natural ventilation. The results are critically compared with the air flow rates assessed through anemometric measurements. The measurement features, limitations, shortcomings and uncertainties are also discussed.

KW - Tracer Gas Techniques

KW - Air Change Measurement

KW - Natural Ventilation

KW - Tracer Gas Techniques

KW - Air Change Measurement

KW - Natural Ventilation

M3 - Article in proceeding

SN - 972-97973-1-5

BT - Proceedings of ROOMVENT 2004, 9th International Conference on Air Distribution in Rooms, September 5-8, 2004, Coimbra, Portugal

A2 - Da Silva, M. C. Gameiro

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Heiselberg PK, Perino M. Measurement of the Air Chance Rate and Ventilation Characteristics During Short Term Transient Phenomena. I Da Silva MCG, red., Proceedings of ROOMVENT 2004, 9th International Conference on Air Distribution in Rooms, September 5-8, 2004, Coimbra, Portugal. 2004