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Solar Pond Water Desalination and Power Plant

Even though solar energy is the most abundant energy available to life on earth, its fluctuation in intensity makes it somewhat unsatisfactory for many power-generation applications unless energy storage is involved. Similarly, wind power stability is undependable. Wave power is also unstable.

The concept of the solar pond provides a method of supplying electric power generation 24-hours per day.

There are already successfully operating salt-gradient Solar Pond power plants around the world. The salt-gradient ponds are designed with a brine bottom layer, a gradient middle layer, and a top water layer. Solar heat is stored in the brine layer. The gradient layer reduces convection heat loss. There are several disadvantages to the salt-gradient pond method of storing heat:

  • Heat is stored only in the brine layer, which limits the usefulness of the rest of the pond for storing heat.
  • Hot water must be pumped out of and into the brine layer, which creates turbulent mixing that enhances heat loss.
  • Evaporation from the surface of the pond requires water replacement.

Our Solar Pond does not have these problems. The Solar Pond can produce electric power for a week of total cloudiness.

The covered Solar Pond concept provides energy to run the power plant 24 hours a day.

If there is a possibility of obtaining seawater, brackish water, or even wastewater, the heat of the hot water from a Solar Pond can be transferred to the boiler of a Rankine cycle engine. In the process, fresh water is produced. For a plant designed to produce 10 MW of electrical power, it would produce 1,000,000 gpd of fresh water.

 

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