I am back to serious woodstoving for home heating now as of 10/10/2018.
Hours and hours of observing wood-to-heat energy conversion puts me back to trying to put in order the differences in the ways to turn tree woods into usable energies. Sun -> Tree -> Me&mine
Wood-to-heat always, for-best-conversion is exaggerating for TEMPERATURE with pressure-made as a minor player = Tp.
Wood to shaft power, for-best-conversion is exaggerating for PRESSURE with heat as the minor player = Pt.
Really guys a wood stove, wood furnace does make and need some pressure energy to function. Now with more woodgasifing for engine fuel your system inches of water and millibar pressures systems monitoring shows this.
Wood gasifing-for fuel and the made fuel gases blend sent to an engine for power shaft making the PRESSURE capable of making is the major with heat made a necessary minor sister.
An extreme example of Pt is firearms. Solid-to-gasious PRESSURE-made against a movable bullet is what make it work the best. Heat-made is actually detrimental to moving that bullet. But unavoidable. Pt.
Think of an internal combustion piston engine as a self-resetting bullet-piston. With the bullet-pistons PRESSURE driven power movement converted to rotary power. Pulsing power admittedly. Why carry though flywheels and multi-power pulse smoothing multi-cyclinder engines. Actually very efficient Pt.
Just as nearly full stociometric (75-90% of all of the fuel hydrogen’s and carbon’s split-out, separated, and re-bound to an atmospheric oxegens) woodstoving is very efficient Tp.
And where does TP fit? External combustion engines. Steam piston engines. Steam turbine engines.
Of course these work to overall make and use fuels converted to BOTH temperature and pressure.
Think about it. Observe these as best engineered in real life. Steam-for-heating always has a huge pressure danger that has to be engineered and operated into usable safety.
Steam-to-shaft power to gain efficiency always needs to drive UP the TP to hard on materials engineering levels. Why the turbines require super-materials, machined and balance out to Expensive to do levels. Why the late 1950’s true-high-performance piston steam guys tried running their cast iron cylinders so hot that they would red/white glow translucent to try and match the by then post WWII advanced IC engines fuel efficiencies.
And tp? Wood breaking down degrading over TIME.
Yep. Time. A third factor in it all.
This would all best be visualized by a good illustrator as three overlapping circles. With the three-overlap as the best-usable area. The circles individually larger and smaller to represent their biased order-of-importance.
Ha! Now in real life engineering you will need to visualize/illustrate/design-model in 3-D for a five sphere overlap best-posibilites area.
Have to add a fourth element in the operators/users. A fifth element representing initial building investment/usable-life costs factor.
For real-in-this-world usable engineering you will never have less than five balls/factors to be constantly juggling.
Understand this and you will have the why’s that diesel/electric locomotives replaced out steam locomotives.
Why big IC piston engines are still the power of choice in lowest costs ocean shipping.