METRICA, l’archivio istituzionale della produzione scientifica dell’Istituto Nazionale di Ricerca Metrologica, ha lo scopo di raccogliere, documentare, conservare e pubblicare, anche ad accesso aperto, i prodotti della ricerca dell’Ente.
METRICA utilizza la piattaforma IRIS (Institutional Research Information System) sviluppata da Cineca.
EnglishSpace cooling in buildings is anticipated to rise because of an increasing thermal comfort demand worldwide, and this calls for cost-effective and sustainable cooling technologies. We present a proof-of-concept multistage device, where a net cooling capacity and a temperature difference are demonstrated as long as two water solutions at disparate salinity are maintained. Each stage is made of two hydrophilic layers separated by a hydrophobic membrane. An imbalance in water activity in the two layers naturally causes a non-isothermal vapor flux across the membrane without requiring any mechanical ancillaries. One prototype of the device developed a specific cooling capacity of up to 170 W m-2 at a vanishing temperature difference, considering a 3.1 mol/kg calcium chloride solution. To provide perspective, if successfully up-scaled, this concept may help satisfy at least partially the cooling needs in hot, humid regions with naturally available salinity gradients.
Multistage and passive cooling process driven by salinity difference / Alberghini, Matteo; Morciano, Matteo; Fasano, Matteo; Bertiglia, Fabio; Fernicola, Vito; Asinari, Pietro; Chiavazzo, Eliodoro. - In: SCIENCE ADVANCES. - ISSN 2375-2548. - 6:11(2020), p. eaax5015.
| Titolo: | Multistage and passive cooling process driven by salinity difference |
| Autori: | |
| Data di pubblicazione: | 2020 |
| Rivista: | |
| Citazione: | Multistage and passive cooling process driven by salinity difference / Alberghini, Matteo; Morciano, Matteo; Fasano, Matteo; Bertiglia, Fabio; Fernicola, Vito; Asinari, Pietro; Chiavazzo, Eliodoro. - In: SCIENCE ADVANCES. - ISSN 2375-2548. - 6:11(2020), p. eaax5015. |
| Abstract: | Space cooling in buildings is anticipated to rise because of an increasing thermal comfort demand worldwide, and this calls for cost-effective and sustainable cooling technologies. We present a proof-of-concept multistage device, where a net cooling capacity and a temperature difference are demonstrated as long as two water solutions at disparate salinity are maintained. Each stage is made of two hydrophilic layers separated by a hydrophobic membrane. An imbalance in water activity in the two layers naturally causes a non-isothermal vapor flux across the membrane without requiring any mechanical ancillaries. One prototype of the device developed a specific cooling capacity of up to 170 W m-2 at a vanishing temperature difference, considering a 3.1 mol/kg calcium chloride solution. To provide perspective, if successfully up-scaled, this concept may help satisfy at least partially the cooling needs in hot, humid regions with naturally available salinity gradients. |
| Handle: | http://hdl.handle.net/11696/62455 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| eaax5015.full.pdf | Versione editoriale | PUBBLICO - Tutti i diritti riservati | Visibile a tuttiVisualizza/Apri |
http://hdl.handle.net/11696/62455
Copyright © 2021