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Analysis of the effects of temperatu...

Pomeroy, Andrew Tom.

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Analysis of the effects of temperature and velocity on the response time index of heat detectors.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Analysis of the effects of temperature and velocity on the response time index of heat detectors./
作者:	Pomeroy, Andrew Tom.
面頁冊數:	81 p.
附註:	Source: Masters Abstracts International, Volume: 48-06, page: 3732.
Contained By:	Masters Abstracts International48-06.
標題:	Engineering, General. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1478101
ISBN:	9781124074382

Analysis of the effects of temperature and velocity on the response time index of heat detectors.
Pomeroy, Andrew Tom.

Analysis of the effects of temperature and velocity on the response time index of heat detectors. - 81 p.

Source: Masters Abstracts International, Volume: 48-06, page: 3732.

Thesis (M.S.)--University of Maryland, College Park, 2010.

Recent revisions to NFPA 72, the National Fire Alarm Code, have specified the response time index (RTI) as the sensitivity listing for heat detectors. Originally derived as a sprinkler sensitivity rating, there has been little work performed to validate the use of the RTI rating for heat detectors. RTI values are determined by plunging the devices into a hot wind tunnel at 200°C (392°F) and 1.5 m/s (4.9 ft/s). These test conditions are unrealistically severe for the majority of expected ceiling jet profiles. While the RTI correlation is purported to be independent of temperature and velocity, data from previous studies indicates otherwise. This study examined the effects of low temperature and low velocity plunge test conditions on the constancy of the RTI for several common heat detectors. The RTI correlation was found to be inconsistent across temperature and velocity test conditions.

ISBN: 9781124074382Subjects--Topical Terms:

1020744
Engineering, General.

Analysis of the effects of temperature and velocity on the response time index of heat detectors.
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502 $a Thesis (M.S.)--University of Maryland, College Park, 2010.
520 $a Recent revisions to NFPA 72, the National Fire Alarm Code, have specified the response time index (RTI) as the sensitivity listing for heat detectors. Originally derived as a sprinkler sensitivity rating, there has been little work performed to validate the use of the RTI rating for heat detectors. RTI values are determined by plunging the devices into a hot wind tunnel at 200°C (392°F) and 1.5 m/s (4.9 ft/s). These test conditions are unrealistically severe for the majority of expected ceiling jet profiles. While the RTI correlation is purported to be independent of temperature and velocity, data from previous studies indicates otherwise. This study examined the effects of low temperature and low velocity plunge test conditions on the constancy of the RTI for several common heat detectors. The RTI correlation was found to be inconsistent across temperature and velocity test conditions.
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