Thermodynamics > Gas Laws
DCS# 4B70.10

FIRE SYRINGE



APPARATUS
fire syringe 202-11-E1,E2
Kim wipe or touch paper
202-04-A


DESCRIPTION
Place a small piece of tissue paper in the tube.  Dim the room lights.  Quickly force the plunger down.  This rapidly compressed air should heat up enough to ignite the paper.

 NOTES

For adiabatic compression of gas, Tf = To (Vo/Vf)(γ-1).
The volume typically decreases by a factor of about 15.
For nitrogen and oxygen, γ = cp/cv = 1.4.
To= 300 K. Tf = 300*(15)0.4 = 890 K.  The ignition temperature of paper is 506 K.

Store the tube with the piston removed. 

Here are the instructions for the Pasco compression igniter.