Monday, January 3, 2011

【 Weak current College 】 current fire protection technology of popular research areas---Power By 【 China power house network 】


Abstract: this paper presents the current fire research of nine of the hottest and most likely significant technical breakthroughs, and their development trends and their implications for future fire safety potential impact had a brief analysis.
Keywords: fire research fire technology
In the past decades, fire science technology for fast development, from basic research to applied technology in all areas of eye-opening results. In the new century dawns, the majority of firemen researchers on fire science and technology development. With the economic and social development, human beings will be on fire safety to increasingly higher demands; the advancement of science and technology will also become a will to improve fire safety levels to provide more advanced methods and technologies. Currently, some fire science and technology research and development activities have been very active, it can be foreseen that in the near future, these areas will have a number of major research results and technical breakthroughs. This article presents the current fire research of nine of the hottest and most likely significant technical breakthroughs, and their development trends and their implications for future fire safety potential impact had a brief analysis.
  
1. fire safety engineering
  
Fire safety engineering is the current fire research one of the most advanced, most active and potential areas of research. Fire safety engineering research theory and engineering of fire science technology principle in the application of the building fire safety, fire safety design for the building and fire safety assessment provides the theoretical and technical means. Foreign research findings show that fire safety engineering development will contribute to the building fire safety design concepts, the establishment of an updated than the traditional "Office style" building fire safety design for more scientific and rational, "to performance-based" building fire safety design methodologies (hereinafter referred to as "performance-based design system"), greatly contribute to the building fire safety design of scientific, rationalization and cost efficiency optimization, and have an enormous social and economic benefits. At the same time, the fire safety engineering for the use of the buildings have been built to provide scientific fire safety assessment method and technology to improve the building's fire safety management standards.
  
Fire safety engineering research and development is a complex system engineering. The study includes fire phenomenon, people in the fire behavior, fire-fighting system of reaction to fire, fire safety design and evaluation, and much more. At present, overseas study on fire safety engineering focus on the following aspects: the fire and the development and modeling, combustion and transmission characteristics, fire smoke flow characteristics, passive fire protection systems and active fire protection systems for fire response evaluation methods and techniques, human behavior in fire and evacuation model, building fire safety assessment method and model (including the fire hazard assessment and fire risk assessment), performance-based design theory and methodology, as well as fire safety design and assessment provides basic data statistics and analysis of fire. Many countries are already building on the results of research and initially set up the performance-based design system and performance-based design specification. However, in all of the above aspects of research are still at an early stage. In scientific research and scientific and practical aspects also far from perfect. Need for better understanding, wider research. Because of fire safety engineering presents great potential. Governments and research institutions have invested substantial resources in research in this area. I believe that in the near future, this field will appear a group with strong practical value of the research results will be in the fire safety design and assessment developed a number of practical technology and computer applications to promote fire safety design and consulting business in the development of high-tech products.
  
2. computer fire modelling and simulation technologies
  
Computer fire modelling and simulation technology in the development and use, as people gain a better understanding of fire occurrence and development of new methods and tools for building fire safety design and fire safety assessment provided new scientific tools, fire safety engineering and performance-based design. It enables people to build a fire on the computer, application engineering calculation models and computer simulations of methodologies, different space and environment under the conditions of the development and spread of fire simulation and forecasting; and according to the setting of the fire scene, calculation and determination of various building components, materials and components, fire protection equipment, as well as space within the fire properties. In this way — to reduce the high dependence of the fire test, you can significantly save on the cost of research and testing; on the other hand by setting various fire scenario repeats simulation and calculus, can greatly increase the flexibility and accuracy of the study, which makes it easy to find out what the law.
  
Computer fire model can also be used for fire investigation. Fire scientists using virtual reality technology in computer established fire building models, simulation of fire with fire scene investigation of data and information provided by witnesses, can accurately identify fire occurrence and development of the whole process, in order to provide the scientific basis for fire investigation.
  
In addition, as the computer fire modelling and simulation technologies evolve and mature, it also will provide fire management, fire-fighting training, command key decision-making, protection, and emergency plan formulation and provide new means and tools.
  
In the past ten years. Fire modeling through regional modeling, field modeling to network modeling and field network for the development of composite moulds, from past to the theoretical research to practical application. Abroad in fire modeling theory on the basis of the results, has developed a number of practical value of computer fires and fire safety order evaluation software, such as the United States of Hazard, the FiRECAM CFAST, Canada, the United Kingdom, JASMINE, Australia of CESARE Smartfire — Risk, Japan's BRI, Germany of KOBRA-3D, and so on.
  
However, with the current research work to a certain extent affected by the calculation method,Calculation tools, fire test conditions, technical data accumulation and fire theory of constraints, has developed these computer fire mode to create accurate parts, flexibility and availability have yet to be further improved. Along with the theoretical and technical aspects of continuous development. In particular, of computer technology and the development of basic theory of fire. Computer fire modelling and simulation technology in research and development will in the near future result in a quantum leap, and in a growing number of application areas, promote fire prevention, fire technology level. 3. fire extinguishing agent
  
New research and development of the extinguishing agent is the last few years developing faster — fields: one for the replacement of halon fire extinguishing agent for new gas and for fighting A fire's "water additives" type of extinguishing agent in the process of research and development is particularly noteworthy.
  
With the destruction of the ozone layer of halon fire extinguishing agent has gradually been eliminated, and the rise of halon alternative abroad technology development research. Currently has developed some good products, such as heptafluoropropane (FM 1 200) and mixed gas (Inergen smoke Cauterization and wild), etc. However, these results are a number of shortcomings. At present, have not yet produced a on human and environmental security not to cause harm in fire extinguishing efficiency, system adequacy and cost price, as will achieve the same level with halon alternative products; no developed can be used to have installed in various places in the halon protection 1301 systems, direct replacement of halon 1301 gas fire extinguishing agent. Therefore, the development of new halon replacement gas fire extinguishing agent's work will remain for the next few years the world's attention on the subject, who can take the lead in developing the ideal replacement of halon 1301 new fire extinguishing agent, who can take the occupation of the international market, generating significant economic benefits.
  
Research and development of fighting A fire's "water additives" type of extinguishing agent and application technology, is the recently released research field another very active, award-winning concern. This article by extinguishing A fire's "water additives"-type fire extinguishing agent, including enhanced water, wet water, water and antifreeze thickened water "extinguishants" and devoting A small fighting fires low blend class than "class a foam". This type of extinguishing agent abroad, the earliest being forestry sector used to fight forest fires, the 80 's to start filling in fire extinguishing a fire in A class, 90 years later being abroad some fire departments for fire urban architecture. At the same time, foreign also developed the compressed air foam system and application technologies, and in this class of fire extinguishing, fire-fighting tactics, physical and environmental security carried out a series of studies. Foreign study showed that this type of extinguishing agent in fighting one of the most common of A class a fire with fire, water, flooding losses small advantages, some products have suppressed the fire smoke concentration, the role of improving the visibility of the fire and therefore has good prospects of promotion. However, further research is needed to solve a lot of problems, such as the extinguishing agent, long-term storage stability issues, on the container corrosive issues, environmental issues, fire technical and tactical issues, on the fire cause identification of possible impact on the problem, and so on.
  
Halon fire extinguishing agent brings to people, so that the whole issue of environmental agent attention. However, current international has yet to establish a set of scientific integrity safety assessment of extinguishing agent environment and detection technology, which has become the current foreign fire research is an important issue. And research on human health and the natural environment without any adverse effect, fire extinguishing effect is good, inexpensive and quality and stability of the extinguishing agent, will be the ongoing efforts of fire research staff.

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