Good project with loads of imaginative ideas mooted. It behoves us to get real if it is to be a success though, so for starters consider the heat input requirement:
2000 kg of water heated from 10 deg C to 30 deg C; delta t = 20
Specific heat of water (from memory) = 4.2 kJ/kg/deg
Heat input = 2000x20x2.4 = 96,000 kJ
My home heating system puts out roughly 40kW of hot gas to a heat exchanger measured at 30% efficiency, so 12kW goes into the water. The burn-time needed would be 96,000/12 = 8,000 sec or 2hr 13 min
To this one should add a bit to account for heat loss from the pool and more than a bit to allow for re-loading the glyc burner a few times. All in all, I reckon half a day should do it.
Perhaps other contending technolgies might try a similar calc (in BTUs if you want to be awkward :-)
David
