[Gasification] most thermally efficient gas driven heat engine ever built

[Bob Stuart]

On 12-Aug-07, at 4:06 PM, gfwhell at aol.com wrote:

>
> Bob
>
> Most of the inefficiency of an I.C. engine is waste heat.
> When the explosion occurs. maximum pressure is applied to the  
> PISTON. which usually has a fixed stroke. The exploding gasses are  
> expanding and the pressure is dropping as the piston moves toward  
> Bottom Dead Center.
> Before the gasses have fully expanded, the piston has reached BDC  
> and these gasses have to be discarded,  released to atmosphere by  
> the exhaust valves. causing two thirds of the available expansive  
> energy to be wasted. This happens more so, on modern "square  
> engines" Where the width of the piston is the same as the stroke.
> A long stroke engine is more fuel efficient but  far bulkier. The  
> Humphrey engine is about as bulky as they come,  because the  
> plumbing and water delivery system is included in its design.
> The exploding gasses are not discarded when they reach atmospheric  
> pressure. in fact the pressure dips below atmosphere within the  
> ignition area
> There for most of the energy released by exploding the fuel is used  
> to propel the water piston. some heat must go into the piston and  
> surrounding chamber,some of this is reclaimed on the compression  
> stroke.
> I found all of the information regarding the thermal performance on  
> this pump, extremely interesting, Because the gas was generated on  
> site and stored in a small gas holder, The fuel being anthracite,  
> was carefully weighed before each test.
>
> How about working out how many miles you can get, out of a freshly  
> slurped barrel of crude oil?
>
> At the turn of the 19th century there were several patents  
> preceding Humphries invention. intended for the propulsion of  
> ships. providing a jet drive which dispenses with propellers and  
> were reversible.
>
> GF

I'm still curious about the effect of valve timing and/or throttle  
restrictions to produce a cooler exhaust.  If the performance of the  
Humphrey engine can be replicated, it would seem ideal for providing  
pumped storage  for hydro power, which would only loose about 10% in  
the generation.  Overall, the system would be far more efficient than  
any current power plants.

Best,
Bob Stuart
>
> n 11-Aug-07, at 10:47 PM, gfwhell at aol.com wrote:
>>
>  The engine performed with over 90% efficiency.
>
>  How could this be?
>
>  If you could French kiss the exhaust pipe of an internal combustion
>  engine running at full load without discomfort, you have found one.
>
>  The Exhaust gas temperature was less than 100f
>
>  If you could build a four stroke engine with a stroke long enough
>  to cause a partial vacuum at bottom dead center you might be on to
>  something.
>   This is the website of the "preserved" engine in Australia:
>  ttp://members.fortunecity.com/freeenergy2000/humphreypump.htmÂ
> Perhaps the thing to do is to raise the cubic capacity and
> ompression radically, but close the intake valve very early, to keep
> he combustion charge and temperature the same.  How far down can we
> et exhaust gas temperature just by running on part throttle?
> Best,
> ob Stuart
>