Salt Gradient Solar Pond for Togolese Climatic Conditions

Abstract

An experimental pond has been installed and gradient generated. A thermal simulation program taking into account geoclimatic conditions is also prepared for analyzing the performance of solar pond, and its optimal operation parameters. Preparation method of the density gradient in the salt water, correction procedure of the density gradient through appropriate technology tools, and analysis on the experimental results are described.

Effect of high wind velocity during harmattan, dust, and rainfall are observed on the thickness of upper convective zone and on the clarity of the pond brine.

The maximum temperature in the pond storage zone achived was 86 ºC, lower than the expected temperature. Reasons for not attaining higher temperature in the storage zone are discussed. However, the temperatures recorded although lower than the expected are sufficient for heating applications. A specific example is given for grain drying in the tropics.