To build the solar hot water tanks we cut 132 bottles of 1.5L and 132 of 2.25L What do we use them for? With the 1.5L bottles, the greenhouse effect is produced, allowing solar radiation to enter the absorbent fin, but not be able to leave. With the second layer of bottles we create a small layer of air, between the 1.5L bottle and the outside, which will function as insulation. Allowing that on cold winter days with 6C ambient temperature and sun, we can heat water 👏💪☀️🚿♻️ Do you want to learn about renewable energy and sustainability? + Information and registration: https://www.sumandoenergias.org/inscribe (link in bio @sumandoenergias) Dates (face-to-face, for people who are in CABA and the province of Buenos Aires): - Yes. 4/23, solar collectors, 9 a.m. to 6 p.m. - Yes. 5/14, solar collectors, 9 a.m. to 6 p.m. Recorded online (you choose when to watch it): - Biodigesters - Solar collectors - Intro. to sustainability #renewableenergy #solarenergy #sustainable #sustainability #recycling #reuse #reduce #volunteers #garbage #renewableenergy #solarenergy #reuse #reduce #recycle #volunteer #volunteers #socialwork #reducereuserecycle #zerowaste #upcycle #sustainable #sustainability #EmergenciaClimatica #CrisisClimatica #calamientoglobal #accionclimatica