Estudio paramétrico y diseño de un sistema solar térmico centralizado con reciclaje de aguas grises para riego en la parroquia Guangaje, provincia de Cotopaxi

Abstract

The development of this project allowed the parametric study and the design of an integral technological alternative for the use of: solar energy through solar thermal systems and wastewater through artificial wetlands (HA). The results obtained for the solar thermal systems are: for Tingo Pucará a catchment area of 26 [m^2] with 12 solar collectors and an accumulation volume of 2500 [l]. The solar fraction obtained is 70% and the energy demand of the ACS is 26988 [kWh]. For the Comuna Guangaje a catchment area of 69 [m^2] with 32 solar collectors and an accumulation volume of 5500 [l]. The solar fraction obtained is 61% and the energy demand for the ACS is 87369 [kWh]. The results obtained for wastewater treatment systems are: for Tingo Pucara a horizontal subsurface flow HA of 6,2 [m^2] area, a slope of 5% with 20 cells of 3,15 [m] of length and with a vegetation of 62 totoras. And for the Guangaje Commune an horizontal subsurface flow HA of 20 [m^2] of area, a slope of 5% with 97 cells of 2,1 [m] of length and with a vegetation of 200 totoras. The economic study made it possible to determine that the project is viable, as follows: For Tingo Pucará, there is a positive NPV and an IRR of 8%, and for the Guangaje Commune a positive NPV and a TIR of 20%.