Re: 3,6x gain on your mCHP electricity production?
Verfasst: 04.06.2016 01:58
Luk,
as the editing of older articles is disallowed I tried to clean the text a bit in the post above,
basically the efficiency depends on the type-technology of the expander used as well as the overall application goals as biomass needs higher steam temps while solar/geothermal ought to be run in sub 100C (expander working fluid medium)..
The most common types are low rpm micro turbine (newest development), or twin screw expander (basically upgraded standard chiller unit linked few months ago), or it could be high rpm turbine, among other approaches..
I doubt we can get our hands on micro turbines in the next few years, also the electronics/control is more complex. But hopefully the twin screw expanders method could be applied to DIY if sourced out somewhere, check out the link of that Spanish company, it's not entirely clear as to whether their twin screw expander is in-house product or taken from other supplier, but it's exceptionally tiny (good)! The rest of the ORC unit is relatively straightforward, diagrams, and information is plentiful, this is basic industrial standard, the only difference is to have the proper temperature/pressure setup components e.g. if burning wood directly, differently tweaked for solar/water-water/geotherm..
http://enerbasque.com/en/index.php/products/
http://enerbasque.com/en/index.php/screw-expander/
ORC is the same steam stuff as found in the majority of big thermal power grid plants, now there is the quest to make it way smaller. This is on the larger side of things, but for instance if you watch the ElectraTherm video, they have got huge biomass boiler container for burning entire solid chunks of timber wood, so inside the walls of the boiler container are hot water loop pipes connected with the outside/standalone CHP unit, where the twin screw expander and condenser+evaporator, other bits are located. Obviously you need the hot water/hydrion loop to dump or rather store such heat output somewhere, most likely in some huge m3 volume to accumulate the heat, like water tank, cavern, old pool, glass chips/bricks bunker, or earth register etc.
how does it work videos https://www.youtube.com/watch?v=Gsob6o6WP1g
(biogas plant so disregard the additional circuits cooling tower and biogas genset)
https://www.youtube.com/watch?v=eIDitPjxgis
https://www.youtube.com/watch?v=IsE9-_YhFsg
For the application of wood chips The DriZzler Pyrotouch would have to be in similar fashion connected via hot water heat exchanger loop to the intake of outside/standalone CHP unit.
as the editing of older articles is disallowed I tried to clean the text a bit in the post above,
basically the efficiency depends on the type-technology of the expander used as well as the overall application goals as biomass needs higher steam temps while solar/geothermal ought to be run in sub 100C (expander working fluid medium)..
The most common types are low rpm micro turbine (newest development), or twin screw expander (basically upgraded standard chiller unit linked few months ago), or it could be high rpm turbine, among other approaches..
I doubt we can get our hands on micro turbines in the next few years, also the electronics/control is more complex. But hopefully the twin screw expanders method could be applied to DIY if sourced out somewhere, check out the link of that Spanish company, it's not entirely clear as to whether their twin screw expander is in-house product or taken from other supplier, but it's exceptionally tiny (good)! The rest of the ORC unit is relatively straightforward, diagrams, and information is plentiful, this is basic industrial standard, the only difference is to have the proper temperature/pressure setup components e.g. if burning wood directly, differently tweaked for solar/water-water/geotherm..
http://enerbasque.com/en/index.php/products/
http://enerbasque.com/en/index.php/screw-expander/
ORC is the same steam stuff as found in the majority of big thermal power grid plants, now there is the quest to make it way smaller. This is on the larger side of things, but for instance if you watch the ElectraTherm video, they have got huge biomass boiler container for burning entire solid chunks of timber wood, so inside the walls of the boiler container are hot water loop pipes connected with the outside/standalone CHP unit, where the twin screw expander and condenser+evaporator, other bits are located. Obviously you need the hot water/hydrion loop to dump or rather store such heat output somewhere, most likely in some huge m3 volume to accumulate the heat, like water tank, cavern, old pool, glass chips/bricks bunker, or earth register etc.
how does it work videos https://www.youtube.com/watch?v=Gsob6o6WP1g
(biogas plant so disregard the additional circuits cooling tower and biogas genset)
https://www.youtube.com/watch?v=eIDitPjxgis
https://www.youtube.com/watch?v=IsE9-_YhFsg
For the application of wood chips The DriZzler Pyrotouch would have to be in similar fashion connected via hot water heat exchanger loop to the intake of outside/standalone CHP unit.