2. Development of a mixed solar module with accumulation system, it is a variant of the mixed solar module, it uses two heat transfer fluids, and a phase change material for storing heat in form of latent heat. This solar module has higher efficiency(performance) and more use of the sunlight hours.
3. Development of a inertial tank filled with phase change material. Which produce a greater amount of heat in the same volume. It uses the pahse change material for heat accumulation in a latent form.