In this research a mathematical model for solar store is organized in which save the heat solar energy is saved for different purposes such as electrical energy generation , heating , or bio-energy fermentation and many other uses . This model includ
es a mixture of heat store substances such as sand , graphite , sea water , the dark cement rocks . The equation of the model was arranged , and solved by using variable values for the shape , and the dimensions of the reservoir and the percentage of the materials in the mixture by using a computer program through which the Matlab program was based on , and was practiced on two kinds of heats store mixtures . The results was converted in to geometric curves through which the comparison can be made between the two mixtures . The results showed that using a mixture of the sea water and dark cement rocks model gave better results .
