Wang S.,Tianjin Fire Research Institute
Advances in Energy Science and Equipment Engineering - Proceedings of International Conference on Energy Equipment Science and Engineering, ICEESE 2015 | Year: 2015
This paper offers a systematic research of foam extinguishing agents available. The paper also presents the functions of foam agents, classifications and respective applications in different places and cases. Classical types of foam agents have their unparalleled advantages while their side effects especially to the environment and human beings have been received growing attention. As the development of science technology and growing awareness of fire safety and environment, more and more scientists dig into the research of new type of foam agents. The paper generalizes the backgrounds of the collective researches of the new type of foam agents. The author also offers a couple of new forms of foam agents. Based on the systematic literature review and technical researches, the paper would like to illuminate more and more research achievements in near future. © 2015 Taylor & Francis Group, London.
Ni Z.,Tianjin Fire Research Institute |
Lu S.,Tianjin Fire Research Institute |
Peng L.,Tianjin Fire Research Institute
Journal of Fire Sciences | Year: 2012
This article presents an experimental study to investigate the fire performance of double-skin facades made with double glazing. First, preliminary tests were carried out to study the breakage of double glazing using a window assembly exposed to fires located in a small burn room. The glazing was 6-mm-thick toughened glass. The results show that at the time when the glass panes broke, the temperatures on the exposed surface of the first layer reached about 600°C-800°C. Second, a full-scale facility was built to study double-skin glass facades exposed to room fires as well as fire spread in the cavity. The internal skin was double glazing using 6-mm-thick glass, and the external skin was double glazing using 12-mm-thick glass with an intervening gel layer. Three fire scenarios with different heat release rates were tested. The temperatures on the outer glass of the internal skin and the inner glass of the external skin on the upper floor were lower than 300°C, which was not high enough to break the upper glass. For the fire scenario with a maximum heat release rate of 2.0 MW, the inner glass of the external skin broke on the first floor opposite to the fire source. The intervening gel layer ignited, and it caused failure of the external skin. The smoke could be exhausted directly to the atmosphere through the broken area on the external skin, and this helped to release the heat trapped in the cavity. © 2012 The Author(s).
Xiang K.,Tianjin Fire Research Institute |
Wang G.-H.,Tianjin Fire Research Institute
Procedia Engineering | Year: 2013
In order to research the calculating method of flexural strength of fire-damaged reinforced concrete (RC) beams with carbon fiber reinforced polymer (CFRP) sheets strengthening, the flexural strength of fire-damaged beam was analyzed with section analysis. The fire exposed region includes tensile region and compressive region. A procedure was developed for quantifying the amount of bending moment of fire-damaged RC beams section with an external strengthening CFRP sheets. An equation of CFRP sheets of effective strain was recommended. The proposed method was verified under the experimental results as well. The results show that the proposed approach is capable of predicting bending moment of firedamaged RC beams with an accuracy that is sufficient for design purposes. © 2013 The Authors. Published by Elsevier Ltd.
Zhuang S.,Tianjin Fire Research Institute
Advanced Materials Research | Year: 2014
The study offers a detailed explanation of performance, origin and classification of persistent organic pollutants (POPs). The paper also overviews the current status in applying POPs in foam concentrates and its test method in China. The author indicates that to test perfluorooctane sulfonates (PFOS) in foam concentrates involves two steps, pretreatment and test. Provided the test equipment is of high reliability and validity, test result solely depends on the result of pretreatment. © (2014) Trans Tech Publications, Switzerland.
Wang L.,Tianjin Fire Research Institute
Xiandai Huagong/Modern Chemical Industry | Year: 2014
Coal chemical industry, especially the coal-to-olefins project, is vigorously developed in China nowadays. However, compared with the traditional petrochemical industry, the fire risk of coal-to-olefins is obviously different and should be deeply investigated. The overall risk of feedings, key installations and processes of the coal-to-olefins industry are analyzed.
Liu X.,Tianjin Fire Research Institute
Advanced Materials Research | Year: 2012
According to the chemical industrial parks current development trend in China, the fire risks, fire safety situations and the existing problems of petrochemical parks have been widely surveyed. And the main basic contents of chemical industrial parks fire safety planning are described in the paper. Through the researches on fire safety planning of chemical industry park and its evaluation system, based on the security planning of the chemical park, the fire safety planning methods and planning procedure to improve the petrochemical industrial park fire prevention levels are proposed on the basis of fire risk analysis. © (2012) Trans Tech Publications, Switzerland.
Xue G.,Tianjin Fire Research Institute |
Song W.-Q.,Tianjin Fire Research Institute
Guangzi Xuebao/Acta Photonica Sinica | Year: 2013
Usual analytical methods are complex and require rigorous experimental condition. In order to meet the demand of fire product supervisory department in rapidly detecting the quality of dry chemical, a rapid and non-destructive method was proposed to determine the moisture content in ABC dry chemical using near infrared spectroscopy of fiber diffuse reflection. The calibration models were established for determination of moisture content of ABC dry chemical by partial least squares and 47 ABC dry chemical sample spectra. Spectral data preprocessing and Spectral region selection were discussed. Correlation Coefficient of Calibration Set of the model was 0.976, root mean square of error cross validation was 0.037 1, correlation coefficient of prediction set was 0.952, and root mean square error of prediction was 0.021 6 in the predicted rang of 0.075%~0.334% for moisture content of ABC dry chemical. Using the Chi-square test method, repeatability standard deviation measurements all belonged to the same overall at a 95% confidence level. All the relative standard deviations were less than 7.0%. The near infrared spectroscopy method is used to test the moisture content of ABC dry chemical is feasible.
Ying-Zhang X.,Tianjin Fire Research Institute |
Hui-Wang G.,Tianjin Fire Research Institute
Applied Mechanics and Materials | Year: 2012
Taking two-component additional liquid silicone rubber (LSR) as base rubber, silica white carbon black as reinforcing packing material. Analyze and compare the combustion performance and mechanical properties of three flame retardant liquid silicone rubber compound, including Magnesium Hydroxide Sulfate Whisker(MHSH), the stearic acid sodium surface treatment of MHSH(MHSH-1), MHSH-1 and organo-modified MMT (MHSH-1/OMMT). The results show that the MHSH-1/OMMT can improve the tensile strength of LSR, and have a unique advantage in improving the flame resistance of LSR. © (2012) Trans Tech Publications, Switzerland.
Huang X.,Hefei University of Technology |
Huang X.,Tianjin Fire Research Institute |
Wang X.S.,Hefei University of Technology |
Liao G.X.,Hefei University of Technology
Proceedings of the Combustion Institute | Year: 2011
A gas-outside-liquid-inside water mist nozzle based on effervescent atomization technology is designed, characterized and tested in this paper. The droplets size distribution, velocity under different operation pressures and gas-liquid-ratios (GLR) are measured with a Phase Doppler Analyser (PDA). The gas flow rate, liquid flow rate of the nozzle with one or seven orifices are also characterized under different operation pressures and GLR conditions, respectively. The results show that all of above parameters are mainly influenced by GLR, i.e., the larger the GLR is, the smaller the droplet size will be, and the liquid mass flow rate is exponentially increased with the increasing of GLR. The test results of fire suppression show that this gas-outside-liquid-inside effervescent atomizer works well for fire extinguishment except the cases where the liquid flow rate is less than about 70 kg/h and the gas pressure is lower than 0.3 MPa. © 2010 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
Song W.-Q.,Tianjin Fire Research Institute |
Xue G.,Tianjin Fire Research Institute
Journal of Near Infrared Spectroscopy | Year: 2015
This article describes a present fire product certification system and some of the problems in supervision and management. The crucial components of extinguishing agents and fire-retardant materials are still unable to be detected rapidly on-site using the GA588 rules for field inspection and judgement of fire products. This article introduces the progress in research on near infrared (NIR) spectroscopy technology for active ingredients, moisture detection, species identification and brand identification of dry powder extinguishing agents, fireproof coatings and heptafluoropropane. It proves that NIR technology can rapidly, accurately and non-destructively measure dry powder extinguishing agents, fireproof coatings and heptafluoropropane. The construction of a rapid detection management system for fire extinguishing agents and fire-retardant materials is put forward. © 2015 IM Publications LLP All rights reserved.