The use of hot air in various processes, requires the development of research to make more efficient and economical methods of producing, where the first option to be evaluated are the solar collectors. As this work develops a modeling of a flat plate solar collector and porous bed using analytical equations solving in block diagrams to structure a software that can simulate the behavior in transient state manifold under various parameters (dimensional, known materials and environmental conditions). In the application to theoretically evaluate the behavior of the porous bed, efficiency, pressure drop, temperature distribution and material used for construction, allowing analysis of the thermal behavior, with an average error compared to experimental results 6%. The model is validated experimentally, with data from an actual collector, where they remain an airflow of 0.119 kg / s and radiation varies between 400-500 W/m 2 and observe the temperature distribution, thermal efficiency and falls pressure. In the results reach temperatures of 360 and 375 K in the exhaust air and pressure drops of 10.27 and 14.27 Pa, recording efficiency values of 36.5 and 51.7% respectively for radiation level. This fact demonstrates the suitability of such collectors as an option to capture solar energy.