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Suppose there are 200 million cars in the US which account
for all the
man made CO2 increase in the atmosphere.
Suppose a tail pipe is 2 inch diameter, and emits 20% CO2 when the
engine is running, which happens on average 2% of the time. To
counter that effect, let's estimate the magnitude of the flux
of a gas
which is 1000 times more potent at cancelling the global
heating effect
than CO2 is at exciting the effect.
We will suppose that the palliative flux is emitted 100 times faster
than an exhaust flow. What diameter of pipe should we visualize?
sqrt(2E8 cars X PI sq inches tail pipe area X 0.02 duty rate
X 0.2 CO2
fraction X 0.001 potency factor X 0.01 flow ratio X 4/PI pipe diam to
area ratio )- this provides me a back of the envelope estimate of 6
inches diameter for the quenching gas exit pipe diameter. This is
certain to be an underestimate. This is described as a garden hose?