The mathematical relationship between the fuel oil
pool area and heat release rate is investigated by systematically analyzing
tunnel fire types, oil pool sizes, and heat release rates in 33 cases globally.
The heat release rates of various fuel sources (alcohols, alkane, and fossil)
with varying oil pool areas are compared. Smallscale
fire tests are performed to verify the fitting mathematical relation of #90
gasoline. The results show the following. (1) In the Chinese tunnel fire model
test, fossil fuels and alcohols accounted for 56% and 31%, respectively,
whereas alkanes and fossil fuels accounted for 29% in fire sources in other
countries. (2) The larger the pool area, the greater the fuel combustion, mass
loss, and heat release rates. Linear calculation and error formula of the heat
release rate and oil pool area of various fuels are obtained and experimentally
verified. (3) Under the same oil pool area, the fuel heat release rate order
from most to least is #0 diesel, n-heptane, #90 gasoline, 99% alcohol, and
methanol. The differences between the five fuels are evident with an increasing
oil pool area.
LI Qi
,
ZHU Qiao
,
YANG Chang
,
WANG Fahao
,
WANG Xue
. Fire Source Heat Release Rate Based on Tunnel Fire
Model Test with Different Fuels[J]. Tunnel Construction, 2022
, 42(4)
: 640
-649
.
DOI: 10.3973/j.issn.2096-4498.2022.04.012
