Atrium Hot Smoke Tests in a Big Shopping Complex

Chow, Wan Ki; Pang, Ecl; Han, Seung Baik; Dong, Hang; Hou, Yanan; Zou, G. W.; He, Zhichao; Gao, Yu; Zou, JF; Li, Ke; Leung, Vyk; Yip, Emt

doi:10.2190/378r-1457-4n27-j0x6

Cited by 7 publications

(13 citation statements)

References 3 publications

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“…The transient smoke layer heights were observed in the site by a scale rule as reported [11]. The smoke layer might not be so clear at some times.…”

Section: Determination Of the Smoke Layer Interface Heightmentioning

confidence: 86%

“…The smoke exhaust rates were calculated from empirical formula [4] under a design fire of 5 MW with some agreed designed clear heights. All technical data appeared in the design manual (not released to the public) with key data summarized [11].…”

Section: Hot Smoke Testsmentioning

confidence: 99%

“…In this article, how smoke layer interface height can be determined in atrium hot smoke tests will be discussed. This is based on the recent experimental data [11] in five atriums with height from 16.5 m to 32.8 m. All those atriums are taller than 12 m and of irregular shapes. Such data [11] would give some indications while applying the N-percentage rule [12].…”

mentioning

confidence: 99%

“…There are numerous arguments in many such field tests, especially when the observed smoke layer interface height is very near to the agreed value. In some projects [1,10,11], the vertical temperature profiles were also measured at positions away from the fire source. The hot air interface height can be determined at positions with sharp changes of vertical air temperature.…”

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confidence: 99%

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Determination of the Smoke Layer Interface Height for Hot Smoke Tests in Big Halls

Chow

2009

Journal of Fire Sciences

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Hot smoke tests are required to carry out in the site of tall halls in the Far East including Hong Kong and Taiwan. The objective is to evaluate the performance of smoke exhaust systems. In the field tests, it is difficult to determine the smoke layer interface height, especially in those tall halls with irregular shapes. A common practice is to measure the vertical temperature profile at distance away from the test fire. The position with sharp changes of vertical temperature is taken as the hot air layer interface. In addition, the N-percentage rule on the measured vertical temperature profile was also applied. There are arguments on determining the percentage N. This point will be studied in this article based on hot smoke test results in five atriums of height up to 33 m. In the field tests, a 2 MW methanol pool fire was approved to generate heat. Smoke guns were used to generate tracers for observing the smoke layer. A thermocouple tree was placed at distance away from the test fire. Visual observations of smoke layer would be compared with the positions giving sharp changes in vertical temperature profile. The N-percentage rule was also applied to determine the smoke layer interface height based on the measured vertical temperature profiles. Values of N varied from 10, 15, and 20%. In this way, elevation of the hot air layer interface can be determined even when a clear smoke layer is not observed.

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“…The transient smoke layer heights were observed in the site by a scale rule as reported [11]. The smoke layer might not be so clear at some times.…”

Section: Determination Of the Smoke Layer Interface Heightmentioning

confidence: 86%

Section: Hot Smoke Testsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Determination of the Smoke Layer Interface Height for Hot Smoke Tests in Big Halls

Chow

2009

Journal of Fire Sciences

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“…Hot smoke tests following Australian Standard [14] are commonly carried out in the Far East. Experimental data on atrium hot smoke tests [15] was used to validate the simulation results.…”

Section: Introductionmentioning

confidence: 99%