Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
Heat Transfer Research
IF: 1.199 5-Year IF: 1.155 SJR: 0.267 SNIP: 0.503 CiteScore™: 1.4

ISSN Print: 1064-2285
ISSN Online: 2162-6561

Volumes:
Volume 51, 2020 Volume 50, 2019 Volume 49, 2018 Volume 48, 2017 Volume 47, 2016 Volume 46, 2015 Volume 45, 2014 Volume 44, 2013 Volume 43, 2012 Volume 42, 2011 Volume 41, 2010 Volume 40, 2009 Volume 39, 2008 Volume 38, 2007 Volume 37, 2006 Volume 36, 2005 Volume 35, 2004 Volume 34, 2003 Volume 33, 2002 Volume 32, 2001 Volume 31, 2000 Volume 30, 1999 Volume 29, 1998 Volume 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2018025564
pages 243-261

STUDY OF POSITIVE PRESSURE VENTILATION IN ROOM FIRES USING A SMALL-SCALE MODEL

T. Y. Yeung
Department of Building Services Engineering, The Hong Kong Polytechnic University, Hong Kong, China
W.K. Chow
Research Centre for Fire Engineering, Department of Building Services Engineering, The Hong Kong Polytechnic University, Hong Kong, China

ABSTRACT

Positive pressure ventilation (PPV) is commonly used for blowing out smoke and thus enhancing the visibility inside a fire scene. However, there are different views on operating PPV for firefighting and rescue. Ventilation arrangements that include the locations of PPV and exhaust openings in a room should be carefully investigated for better understanding of the efficiency of PPV in firefighting. In this study, scale modeling tests in a 1:10 room model were performed to study different ventilation arrangements in using PPV. Experiments of three fire scenarios were conducted, including (i) a single propanol pool fire, (ii) a center pool fire surrounded by four propanol pools, and (iii) a single pool fire surrounded by wood cribs. Ventilation arrangement was varied to study the temperature changes and fire spread patterns. It is observed that the ventilation arrangements would determine whether PPV is effective in firefighting of room fires. In employing PPV, the use of an opposite exhaust opening would give a clear environment without fire spread, while operating PPV would give a bigger fire in the room when there is no exhaust opening.


Articles with similar content:

DESIGN OF VENTILATION SYSTEMS AND FIRE SCENARIOS IN MINES AND ESTABLISHING THE SAFETY ZONE WITH ANALYSIS OF ESCAPE ROUTES
Heat Transfer Research, Vol.49, 2018, issue 3
Selçuk Keçel
A NEW SEMIEMPIRICAL MODEL FOR THE MAXIMUM TEMPERATURE UNDER THE CEILING IN URBAN TRAFFIC LINK TUNNEL FIRES
Heat Transfer Research, Vol.47, 2016, issue 11
W. Wang, Sicheng Li, X. G. Dong, Y. H. Zhao
POTENTIAL FIRE HAZARDS OF A GREEN SUBWAY STATION WITH NATURAL VENTILATION DESIGN
Second Thermal and Fluids Engineering Conference, Vol.16, 2017, issue
C. L. Chow, W. H. Lee
Cyclic Loads Do Not Compromise Functionality of the Interspinous Spacer or Cause Damage to the Spinal Segment: An In Vitro Analysis
Journal of Long-Term Effects of Medical Implants, Vol.18, 2008, issue 4
Lisa Ferrara, Amanesh Goyal, Ankit Mehta, David Dick, Vijay K. Goel, Suresh Reddy Chinthakunta
NUMERICAL STUDY OF THE EFFECT OF WIND VELOCITY ON THE EXTRACTION AND PROPAGATION SMOKE OF A FIRE IN A ROAD TUNNEL
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2009, issue
Olivier Vauquelin, Mohamed Afif El Cafsi, Mourad Bouterra, Ali Belghith, Brahim Kalech, Philippe Bournot