A 3355 square meter, 3.3 m deep water storage pond in El Paso, Tex. was converted to a salt-gradient solar pond to supply industrial process heat to an adjacent food processing plant. Approximately 1.9 × 106 kg of sodium chloride salt was obtained to prepare near saturated brine for pond construction. Design and construction of the solar pond are described in detail including the lining technique, salt dissolution method, diffuser design, instrumentation, maintenance of optical clarity, and gradient establishment, including resolution of initial problems in gradient stability. The solar pond has been in continuous operation for over three years.

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