Analysis Of Temperature And Thermal Effect On Dye Sensitized Solar Cells

By virtue of low cost, highiy effcient, dye-sensitized solar cells have attracted more and more researchers attention as a new type of solar cell around the world. But the efficiency and life span of dye-sensitised solar cells are subjected to the limit of temperature. The thermal effect is analyzed on the base of the working principle of dye-sensitized solar cells in this thesis. By means of the numerical simulation, the present research gets the temperature distribution and variation in the cells. Meanwhile, under the same conditions, the temperature variation curves of experiment and simulation are anastomotic. The result has proved the validity of the simulation. Besides, depend on simulation and experiment under the conditions of the day, it also turns out the temperature variation curves of experiment and simulation are anastomotic. The result also proves the validity of the simulation. Nevertheless, under the conditions of the environmental temperature 37℃, the radiation intensity 1000W/m2, and the most high temperature is about 79℃, which reaches the temperature of the battery efficiency decrease.In this thesis, the influence of some factors on dye sensitized solar cell temperature are analysed, when the light intensity gradually increases or decreases, the influence factors of the DSSCs temperature are different. When the light intensity increases gradually, the temperature is mainly influenced by light intensity, ambient temperature and the coefficient of convective heat transfer. By using the orthogonal test, we get the fitted empirical formula between the temperature and three factors, through the comparison for formula calculated values of the maximum temperature and simulation values, the result shows that both of the maximum temperatures are very close. When the light intensity gradually decreases, the temperature of DSSCs is mainly influenced by light intensity, environmental temperature, convective heat transfer coefficient and initial temperature, according to the test, gets the fitting relation between the temperature and four factors, and through the comparison for formula calculated values of the maximum temperature and simulation values, the result shows that both of the maximum temperatures are very close.This thesis describes two kinds of cooling structure on cells, one is a single block cell of natural circulation, another is battery plates of forced circulation. For single block cell of natural circulation, increasing ribs in battery back, which are rectangular fins or triangular ribs, after simulation, compared temperature of not loaded ribs with cooling structure; for the forced circulation cooling package battery plate, the back of the battery loads radiator fins, wherein is the fork in rows, through air forced convection cooling, gets the temperature change status of the battery plate.