Novel
suggested
design
1 – initial gas generator
2 – heat exchanger ¹1
3 – afterburner
4 – heat exchanger ¹2
5 – gas-expansion turbine
6 – fan of the second
contour
7 – exhaust of hot air
8 – exhaust of cold
combustion products
System Description
After the
afterburner the working medium of first circuit with the low contents of oxygen
(down to 5%) previously cools in heat exchanger 4 down to 70–80°Ñ by the air of
the second circuit and extends on the expansion turbine 5 from pressure
0,25–0,3 MPa up to 0,11–0,12 MPa. Further this combustion products with
temperature from minus 20°Ñ to plus 30°Ñ feeds
directly in the center of a fire through the nozzle 8 (in dependence of
construction). For example, by easy installated portable pipes. During
combustion of one ton of kerosene (during 37 minutes) ~ 15000m3
of neutral cold gas, in particular, by using of Russian aviation engine TB3-117
gas generator, could be made. In one hour it could be made ~ 24 000 m3 of cold gas and 1600 kg of fuel burns out for it.
Parameters of an aggregate with supersonic flow of cold neutral gas are
theoretically considered.
On the basis of
similar aggregates it is possible to create transported and stationary systems
of fire suppressions for habitations and industrial buildings, libraries,
picture galleries, petrochemistry enterprises, arsenals. The aggregates can also
be used on railway trains, dry-cargo ships and bulk-oil ships. The operational
mode with raised content of oxygen in combustion products is possible for an
elimination of damage to health of the people who captured by fire, but with
suppression of the open flame. High efficiency of an aggregate on extinguishing
substance will allow to liquidate fires for dozens minutes. Characteristics of
an aggregate for the forest fires extinction are also considered.
Advantage
of suggested manner: the gas is produced immediately
on a catastrophe place; a raw material for this is aviation kerosene and
outside air.
protected
by three patents of Russia
Author
Dr.Boris Kh.Perelshtein, Tupolev’s Kazan State Technical University
e-mail: perel@kai.ru
office phone: (7)(8432) 361893,
home phone: (7)(8432) 765086
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