The problem to solve is this: I want to create a heat generator [or heat absorber] that functions at atmospheric pressure to the pressure at the bottom of the sea. It will be used to drive a Stirling engine.
As such, I'm worried that a simple burner with adjustable flow rates won't act predictably at extreme pressures.
- 1 atm - 1000 atm ambient pressure
- I can maintain a constant differential pressure between fuel/oxidizer bottles and the reactor
- 1 kW output power (small in scale)
- Nitrous oxide/hydrocarbon (probably propane) constituents [edit: not set in stone]
Will the combustion chemistry work out? Is the reaction so fast that stable combustion is impossible at low flow rates?
I am also reading up on supercritical hydrothermal combustion as an alternate solution. I have contemplated using liquid nitrogen as a heat absorber, but it is appx 1/100 mass-efficient in terms of energy input/output. Alternate solutions that avoid the problem entirely are also welcome. <3