Polytechnic University of Turin

About: Polytechnic University of Turin is a education organization based out in Turin, Piemonte, Italy. It is known for research contribution in the topics: Finite element method & Nonlinear system. The organization has 11553 authors who have published 41395 publications receiving 789320 citations. The organization is also known as: POLITO & Politecnico di Torino.

Passive solar high-yield seawater desalination by modular and low-cost distillation

Abstract: Although seawater is abundant, desalination is energy intensive and expensive. Using the Sun as an energy source is attractive for desalinating seawater. Although interesting, current passive devices with no moving parts have unsatisfactory performance when operated with an energy flux lower than 1 kW m−2 (one sun). We present a passive multi-stage and low-cost solar distiller, where efficient energy management leads to significant enhancement in freshwater yield. Each unit stage for complete distillation is made of two hydrophilic layers separated by a hydrophobic microporous membrane, with no other mechanical ancillaries. Under realistic conditions, we demonstrate a distillate flow rate of almost 3 l m−2 h−1 from seawater at less than one sun—twice the yield of recent passive complete distillation systems. Theoretical models also suggest that the concept has the potential to further double the observed distillate rate. In perspective, this system may help satisfy the freshwater needs in isolated and impoverished communities in a sustainable way. Solar desalination is an attractive alternative to energy-intensive conventional seawater desalination. In this study, the authors present a completely passive, multi-stage and low-cost distiller using layers of membranes to achieve a distillate flow rate of almost 3 l m–2 h–1.

To Blockchain or Not to Blockchain: That Is the Question

Abstract: Blockchain has been considered a breakthrough technology-but does your company need it? In this article, the authors discuss the advantages and disadvantages of blockchain technology using examples from the insurance sector, which can be generalized and applied to other sectors.