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LUND UNIVERSITY LIBRARIES

Mäta HRR från Li-jonbatterier med hjälp av OCC (oxygen consumption calometry) och andra metoder

Skyllberg, Olof LU (2023) In LUTVDG/TVBB VBRM01 20212
Division of Fire Safety Engineering
Abstract
One of the most important parameters to measure in the fire discipline is the heat release rate
(HRR). Therefore it is very important that these measurements are accurate and as correct as
possible. The most common method for measuring heat release rate of fires is the OCC method
(oxygen consumption calorimetry). The method is based on the relation between oxygen in the
surroundings and the exhaust gases. Problems with the method can arise when the fuel that is
burnt develops oxygen by itself, something that a lithium-ion battery do. One solution to this
problem could be to use a different method to measure HRR. The method that is chosen to
evaluate as an alternative to OCC is the SERA (sensible enthalpy rise approach)... (More)
One of the most important parameters to measure in the fire discipline is the heat release rate
(HRR). Therefore it is very important that these measurements are accurate and as correct as
possible. The most common method for measuring heat release rate of fires is the OCC method
(oxygen consumption calorimetry). The method is based on the relation between oxygen in the
surroundings and the exhaust gases. Problems with the method can arise when the fuel that is
burnt develops oxygen by itself, something that a lithium-ion battery do. One solution to this
problem could be to use a different method to measure HRR. The method that is chosen to
evaluate as an alternative to OCC is the SERA (sensible enthalpy rise approach) method. A
comparison between the methods is conducted to evaluate if the SERA method can produce a
result with less uncertainty than that of the OCC method. The comparison is conducted through a
series of calculations and assumptions. The assumptions that are made in the comparison is
deemed to induce to large of an uncertainty in the result to state that one method is better than
the other one and instead it is suggested that further research should be conducted to be able to
conclude which method is better. The results that can be concluded from the work is that a
measurement with the SERA method has to be conducted very carefully to have a chance to be
an improvement of a measurement with the OCC method. The second result that can be
concluded from the work is that the produced oxygen from the lithium-ion battery induces a
significant uncertainty in the OCC method, resulting in an underestimate of the HRR. (Less)
Please use this url to cite or link to this publication:
author
Skyllberg, Olof LU
supervisor
organization
course
VBRM01 20212
year
type
M2 - Bachelor Degree
subject
keywords
Litium-jon batteri, Termisk rusning, Oxygen consumption calorimetry (OCC), Sensible enthalpy rise approach (SERA), effektutveckling. Lithium-ion batteries, Thermal runaway, Heat release rate.
publication/series
LUTVDG/TVBB
report number
5688
other publication id
LUTVDG/TVBB--5688--SE
language
Swedish
id
9134733
date added to LUP
2023-08-28 11:30:59
date last changed
2023-08-28 11:30:59
@misc{9134733,
  abstract     = {{One of the most important parameters to measure in the fire discipline is the heat release rate 
(HRR). Therefore it is very important that these measurements are accurate and as correct as 
possible. The most common method for measuring heat release rate of fires is the OCC method 
(oxygen consumption calorimetry). The method is based on the relation between oxygen in the 
surroundings and the exhaust gases. Problems with the method can arise when the fuel that is 
burnt develops oxygen by itself, something that a lithium-ion battery do. One solution to this 
problem could be to use a different method to measure HRR. The method that is chosen to 
evaluate as an alternative to OCC is the SERA (sensible enthalpy rise approach) method. A 
comparison between the methods is conducted to evaluate if the SERA method can produce a 
result with less uncertainty than that of the OCC method. The comparison is conducted through a 
series of calculations and assumptions. The assumptions that are made in the comparison is 
deemed to induce to large of an uncertainty in the result to state that one method is better than 
the other one and instead it is suggested that further research should be conducted to be able to 
conclude which method is better. The results that can be concluded from the work is that a 
measurement with the SERA method has to be conducted very carefully to have a chance to be 
an improvement of a measurement with the OCC method. The second result that can be 
concluded from the work is that the produced oxygen from the lithium-ion battery induces a 
significant uncertainty in the OCC method, resulting in an underestimate of the HRR.}},
  author       = {{Skyllberg, Olof}},
  language     = {{swe}},
  note         = {{Student Paper}},
  series       = {{LUTVDG/TVBB}},
  title        = {{Mäta HRR från Li-jonbatterier med hjälp av OCC (oxygen consumption calometry) och andra metoder}},
  year         = {{2023}},
}