Hi I would like to ask the community if we can set up a post for a new energy system I have been working on ,I think it works out more efficient and ecologically better , and its large scale thinking for energy systems , and now I need to check through my figures and need the views of IET thinkers for instance on combustion , post combustion chemistry , it unfolds into quite a complex system which I have been working on for 8 years , but enables us to get more energy from wastes and perhaps helps to move to biomaterials. I have an interest as environmental thinker and have designed the system to go through to government funding phases and pretty confident it works well in a number of questions around energy and environmental thinking .
"water vapour produced will carry considerable amounts of heat which can be recovered as saturated water vapour . "
How do you recover that heat, or any more than a small fraction of it ?
Generally anything cooler than super-heated steam is incapable of driving a mechanical system with any efficiency worth consideration.
As you rightly say, in a conventional system about 65-75 %of the energy released by combustion is not available as shaft horse power, it simply comes out as wasted heat we cannot use because the temperature difference relative to ambient is too low.
The old steam engine guys knew this and had triple expansion cylinders where the last one was essentially only 100C and venting into partial vacuum and a modern mutli-stage turbine does the same sort of trick but far more elegantly by having stacks of turbine blades at varying pitches and with various chamber volumes to extract energy at each stage of expansion and cooling, but you cannot break the 2nd law of thermodynamics.
"water vapour produced will carry considerable amounts of heat which can be recovered as saturated water vapour . "
How do you recover that heat, or any more than a small fraction of it ?
Generally anything cooler than super-heated steam is incapable of driving a mechanical system with any efficiency worth consideration.
As you rightly say, in a conventional system about 65-75 %of the energy released by combustion is not available as shaft horse power, it simply comes out as wasted heat we cannot use because the temperature difference relative to ambient is too low.
The old steam engine guys knew this and had triple expansion cylinders where the last one was essentially only 100C and venting into partial vacuum and a modern mutli-stage turbine does the same sort of trick but far more elegantly by having stacks of turbine blades at varying pitches and with various chamber volumes to extract energy at each stage of expansion and cooling, but you cannot break the 2nd law of thermodynamics.
