A power generation apparatus

摘要

A positive displacement compressor (1) compresses air while thermal energy is extracted from the air being compressed. A heat exchanger (3) heats the compressed air (9) from the compressor. A fuel cell (e.g. solid oxide or molten carbonate) has a cathode (101) supplied with heated compressed air from the heat exchanger and an anode (105) supplied with fuel. A positive displacement combustor (4) is fed with hot pressurised product gas from the fuel cell, and burns fuel (preferably unburned fuel in the anode product gas (106)) in the presence of the product gas and expands hot combustion gases to drive the compressor. The exhaust gas (10) is fed from the combustor (100) to the heat exchanger (3) to heat the compressed air.