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Measurements of heat transfer to a massive cylindrical calorimeter engulfed in a circular pool fire

Kramer, M.A. / Greiner, M. / Koski, J.A. / Lopez, C. / Suo-Anttila, A.

A large-scale experiment was performed to measure heat transfer to a massive cylindrical calorimeter engulfed in a 30 minute circular-pool fire. This test simulated the conditions of a truck-sized nuclear waste transport package in a severe fire. The calorimeter inner surface temperature and the flame environment emissive power were measured at several locations as functions of time. An inverse heat conduction technique was used to estimate the net heat flux to the calorimeter. Tall porous fences surrounded the test facility to reduce the effect of wind on the fire. Outside the fences, 2.9 m/s winds blew across the calorimeter axis at the beginning of the test but decreased with time. The wind tilted and moved the fire so that the initial flame environment emissive power was substantially less on the windward side than the leeward side. The calorimeter became more uniformly engulfed as the winds decreased. The maximum heat flux to the calorimeter was 150 MW/m² on the leeward side at the beginning of the fire, and generally decreased with time. The local variations of calorimeter temperature and heat flux were closely related to the local flame environment emissive power.

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Measurements of heat transfer to a massive cylindrical calorimeter engulfed in a circular pool fire

Kramer, M.A. / Greiner, M. / Koski, J.A. / Lopez, C. / Suo-Anttila, A.

A large-scale experiment was performed to measure heat transfer to a massive cylindrical calorimeter engulfed in a 30 minute circular-pool fire. This test simulated the conditions of a truck-sized nuclear waste transport package in a severe fire. The calorimeter inner surface temperature and the flame environment emissive power were measured at several locations as functions of time. An inverse heat conduction technique was used to estimate the net heat flux to the calorimeter. Tall porous fences surrounded the test facility to reduce the effect of wind on the fire. Outside the fences, 2.9 m/s winds blew across the calorimeter axis at the beginning of the test but decreased with time. The wind tilted and moved the fire so that the initial flame environment emissive power was substantially less on the windward side than the leeward side. The calorimeter became more uniformly engulfed as the winds decreased. The maximum heat flux to the calorimeter was 150 MW/m² on the leeward side at the beginning of the fire, and generally decreased with time. The local variations of calorimeter temperature and heat flux were closely related to the local flame environment emissive power.

Measurements of heat transfer to a massive cylindrical calorimeter engulfed in a circular pool fire

Kramer, M.A. / Greiner, M. / Koski, J.A. / Lopez, C. / Suo-Anttila, A.

A large-scale experiment was performed to measure heat transfer to a massive cylindrical calorimeter engulfed in a 30 minute circular-pool fire. This test simulated the conditions of a truck-sized nuclear waste transport package in a severe fire. The calorimeter inner surface temperature and the flame environment emissive power were measured at several locations as functions of time. An inverse heat conduction technique was used to estimate the net heat flux to the calorimeter. Tall porous fences surrounded the test facility to reduce the effect of wind on the fire. Outside the fences, 2.9 m/s winds blew across the calorimeter axis at the beginning of the test but decreased with time. The wind tilted and moved the fire so that the initial flame environment emissive power was substantially less on the windward side than the leeward side. The calorimeter became more uniformly engulfed as the winds decreased. The maximum heat flux to the calorimeter was 150 MW/m² on the leeward side at the beginning of the fire, and generally decreased with time. The local variations of calorimeter temperature and heat flux were closely related to the local flame environment emissive power.

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Title:

Measurements of heat transfer to a massive cylindrical calorimeter engulfed in a circular pool fire

Additional title:

Messung des Wärmeüberganges an ein massives, zylindrisches Kalorimeter in einem kreisförmigen Poolfeuer

Contributors:

Kramer, M.A. (author) / Greiner, M. (author) / Koski, J.A. (author) / Lopez, C. (author) / Suo-Anttila, A. (author)

Published in:

Transactions of the ASME, Journal of Heat Transfer ; 125 ; 110-117

Publication date:

2003

Size:

8 Seiten, 10 Bilder, 15 Quellen

ISSN:

DOI:

https://doi.org/10.1115/1.1527905

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Kalorimeter , Feuer , Kreisform , Wärmeübergang , Messung , radioaktiver Abfall , Transport , Lastkraftwagen , Oberflächentemperatur , Flamme , Emissionsvermögen , Wärmefluss , Windgeschwindigkeit

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