For a wide range of Aquaculture facilities operational temperature must be 24°C during winter. This section shows the simulation for a Solar Pond with a 1000 m2 area and 2 m depth, considering that variables ambient temperature, energy extraction and solar radiation at surface are sinusoidal like in the work presented in [7].

In order to a better knowledge of the simulation we consider two years of Pond performance even operational DSP will be operated at an annual periodicity basis. Energy extraction will be the important criteria to achieve the temperature level of the SZ.

For an example application in the Portuguese west coast (Lat 38N) which leads to the ambient temperature presented in model we are going to consider three regimes of DSP energy extraction.

Considering an high rate of energy extraction the temperature in the storage zone varies between 20° C and 65°C achieving not the desirable minimal winter temperature for the example application (Figure 2).

For the situation of virtually no energy extraction, the temperature raises more than 100°C, which leads to a quickly homogenization of the Pond (Figure 3).

This example is not adequate with the operation of a Solar Pond. If it is going to boil the zones became homogeneous and the Solar Pond destabilized. So neither these situations are in agreement with the expectations for an application.

A third situation seems to be adequate to achieve Aquaculture thermal demand. Here the level of extracted energy is slowly less but the temperature in the storage zone is in a proper range, 25°C to 75°C (Figure 4).

Fig. 4 — 1000 m2 Solar Pond adjusted level energy extraction.