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tag EXPERIENCES FROM OPERATION OF DIFFERENT EXPANSION DEVICES IN DOMESTIC MICRO ORC
Dariusz Mikielewicz, Jaroslaw Mikielewicz, Jan Wajs, Eugeniusz Ihnatowicz
Session: Poster Session and Sponsors Exhibition
Session starts: Thursday 22 September, 14:00


Dariusz Mikielewicz (Institute of Fluid-Flow Machinery PAS)
Jaroslaw Mikielewicz (Institute of Fluid Flow Machinery)
Jan Wajs (Institute of Fluid-Flow Machinery PAS)
Eugeniusz Ihnatowicz (Institute of Fluid FLow Machinery)

Abstract:
The parallel path for searching of the expansion device to operate within the domestic micro heat and power plant encompasses activities related to adaptation and modification of existing devices available on the market to adjust them to operate as expansion machines. Authors accomplished already adjustments of three of such devices, namely the scroll compressor, pneumatic drill and pneumatic wrench. Some experiences from operation of these devices on the specially designed for that purpose experimental rig will be presented in the paper. Experiments showed the superiority of both “pneumatic devices” over the scroll expander, indicating the possible internal efficiencies in the range of 6182%. Such efficiencies are very attractive, especially at the higher end of that range. The volume of these devices is much smaller than the scroll expander which makes it again more suitable for a domestic micro CHP. Small rotational velocities enable to conclude that connection to electricity grid will also be simpler in the case of “pneumatic devices”.