bachelorThesis
Diseño, construcción y comparación de la eficiencia de dos colectores solares térmicos de baja temperatura en la ciudad de Cuenca
Fecha
2017Autor
González Pozo, Santiago José
Institución
Resumen
The following project involves the design, construction and comparison of the efficiency between two low temperature solar thermal collectors. The first is a very simple and economic design, easy to construct, and it uses recycled materials. The second will be a flat plate collector with a more sophisticated design, and it will use high quality materials to increase efficiency to the maximum. To determine and compare the efficiency of the two collectors, those were tested in Cuenca, Ecuador, at the same time and under the same conditions. In each solar thermal collector, the water temperature was measured, before and after being heated, and compared with the solar radiation levels at the time they were in operation. With all the data collected, it was generated a graphic comparing these variables (T and Solar radiation) and obtain a correlation index between the two of them. Using this data we can determine the efficiency of the collectors, comparing the incident solar energy with the energy given to the water in the form of heat. The first design got an efficiency of 46% and the second one has an efficiency of 62%.
This work also made a small economic analysis, estimating the energy and economical savings every month and the payback time of the investment on each solar thermal collector by using a database of average levels of solar radiation in Cuenca. With all the information collected we could determine the advantages and disadvantages, strengths and weaknesses of each design.