Nucleation of Steam Bubbles in a Proposed Ocean Thermal Gradient Hydraulic Power Plant
Naval Civil Engineering Laboratory Port Hueneme United States
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This is a study of the nucleation of steam bubbles generated by cavitation in seawater and the ways of utilizing the resultant steam in a steam-driven version of the air lift pump. A method is described wherein micronuclei consisting primarily of microscopic particles with adsorbed gas layers are activated in a cavitating venturi then grown to a useful size by evaporation in a subsequent section of the pump tube. A small laboratory demonstration is described and various conditions of flow observed are reported. A rational explanation for the activation nuclei is given. The bubble growth observed is as predicted, and is given.
- Physical Chemistry