Salinity Gradient Power: Utilizing Vapor Pressure Differences

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Science  26 Oct 1979:
Vol. 206, Issue 4417, pp. 452-454
DOI: 10.1126/science.206.4417.452


By utilizing the vapor pressure difference between high-salinity and lowsalinity wvater, one can obtain power from the gradients of salinity. This scheme eliminates the major problems associated with conversion methods in which membranes are used. The method we tested gave higher conversion efficiencies than membrane methods. Furthermore, hardware and techniques being developed for ocean thermal energy conversion may be applied to this approach to salinity gradient energy conversion.

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