4 ms·

To complete the analysis, you should (a) use the high temperature combustion heat to run a heat engine to power the oxygen concentrator, and (b) include the was

• littlestymaar 4y ago
  You could do (a) but I don't think there exists oxygen concentrator running on anything else than electricity on the market, so if you need to design you own custom oxygen concentrator and get it built, your CapEx are going to be ludicrous. Or you can make electricity from the heat then power a regular concentrator, that would be more reasonable but that's still another complex and costly machine to add to the system. that's the thing with thermodynamic machines, you can always increase the yield by increasing temperature and getting closer to the Carnot cycle, but every step is more costly than the previous one. In the real world you always have CapEx + OpEx as additional input. Regarding (b), here waste heat is hardly usable as it is low temperature and diffuse. You could still you the residual heat from the engine in (a) since it would still be hot enough, but the 350W dissipated by the concentrator can't realistically be collected.