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1. (WO2017151539) POWER GENERATION USING A HEAT ENGINE AND SORPTION BEDS

Pub. No.:    WO/2017/151539    International Application No.:    PCT/US2017/019818
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Mar 01 00:59:59 CET 2017
IPC: F01K 25/10
F25B 15/04
F25B 49/04
F01K 13/02
Applicants: ETHOSGEN, LLC
Inventors: ROEGE, Paul
Title: POWER GENERATION USING A HEAT ENGINE AND SORPTION BEDS
Abstract:
A sorption-expansion process is disclosed that recovers waste energy contained in a fluid stream, such as hot water from a power plant. The sorption-expansion system includes sorbent beds which are selectively coupled to an expander. The expander could be a reciprocating engine, scroll, turbine, or other style. A sorbent bed with absorbed/adsorbed working fluid at high pressure operates in a desorption mode and provides the working fluid to the expander while another sorbent bed receives absorbs/adsorbs the expanded, low-pressure working fluid from the expander. With four sorbent beds, while first and second beds are active in sorption and desorption, a third bed is heated (by a source such as via waste energy) and a fourth additional bed is cooled via a coolant stream. The beds are switched between modes by valves that fluidly couple the sorbent beds with the expander, the hot fluid, and the cold fluid.