2 ms·
Salinity Gradient Power: Utilizing Vapor Pressure Differences (1978)
- blacksqr 4y ago"To date, virtually all of the research experiments on salinity gradient energy conversion have been based on flow- through membranes-semipermeable membranes for pressure-retarded osmosis or ion-selective membranes for reverse electrodialysis. The difficulties associated with use of these membranes include high cost, degradation, polarization, and solution pretreatment requirements. In principle, however, most desalination schemes that are reversible are capable of producing power in salination. The scheme we report here does not require membranes. It is the reversal of vapor compression desalination, which has a higher thermodynamic efficiency than flash distillation, the most highly developed desalination method"
- blacksqr 4y ago"a power density of as much as 7 W per square meter of heat exchanger surface was measured for some runs at 40°C. This value is much higher than values obtained with membrane systems"