The concept of converting ocean thermal energy has been around for a long time. The viability of OTEC power plants as prospective sources of renewable energy has been examined. However, because the temperature difference between the surface and the deep sea is modest, the OTEC system has low efficiency and high investment costs, and it has a long pipe line and high pumping costs for using cold deep water. The OTEC depend on the temperature difference between the surface and the deep waters. Therefore, we suggest using PCM to store heat during the day and operate the system for more working hours. As a result, the OTEC system is used in conjunction with a solar system and PCM in this research. The aim of this paper is to reach an optimum design and optimum layout for experimental model to raise and improve the efficiency of the OTEC by using Mathematical model. It is expected to increase the number of operating hours of the system by greater percentage after using the phase change material in the tank of the ideal size and with a specified amount of phase change materials. And based on the increase in the number of operating hours at night when the temperature difference decreases, the efficiency of the overall system will increase.

Topics
Power plants, Renewable energy, Solar system, Mathematical modeling
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