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LUND UNIVERSITY LIBRARIES

Reaktionskrafter från strålrör

Jönsson, Jesper LU and Röman, Axel LU (2014) In LUTVDG/TVBB VBRM01 20142
Division of Fire Safety Engineering
Abstract
Like all businesses there is also an interest in the fire service to always improve the efficiency of its work. This can be done in many different ways, for example by changing the existing formation of the local rescue organization or through the continued development of current methods and equipment that firefighters use. Most rescue services across Sweden are currently using low pressure pumps during normal fire situations; these are connected to a standard hose outlay and with a standard pump pressure of 10 bars, which has turned out to work well for firefighting. However, several new studies shows that increased pressure can create a better extinguishing effect. This leads to the question about how high the pressure can be, before it... (More)
Like all businesses there is also an interest in the fire service to always improve the efficiency of its work. This can be done in many different ways, for example by changing the existing formation of the local rescue organization or through the continued development of current methods and equipment that firefighters use. Most rescue services across Sweden are currently using low pressure pumps during normal fire situations; these are connected to a standard hose outlay and with a standard pump pressure of 10 bars, which has turned out to work well for firefighting. However, several new studies shows that increased pressure can create a better extinguishing effect. This leads to the question about how high the pressure can be, before it is no longer manageable for a firefighter to handle with consideration to the occurring reaction force.
This report investigated which reaction forces appear for different nozzles with different pressure and flow configurations. When this is done subjective assessments are used in order to establish an acceptable force for different types of nozzles. Based on all the experiments this report showed that different nozzles got different assessments regarded to what was manageable when the exact same reaction force arose. According to the tests a regular nozzle is easier to manage than a fog nozzle at equal forces. (Less)
Please use this url to cite or link to this publication:
author
Jönsson, Jesper LU and Röman, Axel LU
supervisor
organization
alternative title
Reaction forces from nozzles
course
VBRM01 20142
year
type
M2 - Bachelor Degree
subject
keywords
Manageability, reaction force, nozzle, nozzle pressure, pump pressure, pressure loss, firefighting, high pressure system, low pressure system, flow, hanterbarhet, reaktionskraft, strålrör, munstyckstryck, pumptryck, tryckförlust, brandsläckning, högtryckssystem, lågtryckssystem, flöde
publication/series
LUTVDG/TVBB
report number
5469
ISSN
1402-3504
language
Swedish
id
4985917
date added to LUP
2015-01-26 13:45:35
date last changed
2015-01-26 13:45:35
@misc{4985917,
  abstract     = {{Like all businesses there is also an interest in the fire service to always improve the efficiency of its work. This can be done in many different ways, for example by changing the existing formation of the local rescue organization or through the continued development of current methods and equipment that firefighters use. Most rescue services across Sweden are currently using low pressure pumps during normal fire situations; these are connected to a standard hose outlay and with a standard pump pressure of 10 bars, which has turned out to work well for firefighting. However, several new studies shows that increased pressure can create a better extinguishing effect. This leads to the question about how high the pressure can be, before it is no longer manageable for a firefighter to handle with consideration to the occurring reaction force.
This report investigated which reaction forces appear for different nozzles with different pressure and flow configurations. When this is done subjective assessments are used in order to establish an acceptable force for different types of nozzles. Based on all the experiments this report showed that different nozzles got different assessments regarded to what was manageable when the exact same reaction force arose. According to the tests a regular nozzle is easier to manage than a fog nozzle at equal forces.}},
  author       = {{Jönsson, Jesper and Röman, Axel}},
  issn         = {{1402-3504}},
  language     = {{swe}},
  note         = {{Student Paper}},
  series       = {{LUTVDG/TVBB}},
  title        = {{Reaktionskrafter från strålrör}},
  year         = {{2014}},
}