Fog Harvesting For Fresh Water

Fog harvesting devices that gather air-borne water droplets and then concentrate them for use by humans. About nine hundred million people around the world do not have access to a source of clean drinking water.

A fog-harvesting device consists of a fence-like mesh panel, which attracts droplets, connected to receptacles into which water drips. Chhatre has co-authored published papers on the materials used in these devices, and believes he has improved their efficacy. "The technical component of my research is done," Shreerang Chhatre of MIT says. He is pursuing his work at MIT Sloan and the Legatum Center in order to develop a workable business plan for implementing fog-harvesting devices.


(Fog-harvesting mesh)

Chhatre's training as a chemical engineer has focused on the wettability of materials, their tendency to either absorb or repel liquids (think of a duck's feathers, which repel water). A number of MIT faculty have made advances in this area, including Robert Cohen of the Department of Chemical Engineering; Gareth McKinley of the Department of Mechanical Engineering; and Michael Rubner of the Department of Materials Science and Engineering. Chhatre, who also received his master's degree in chemical engineering from MIT in 2009, is co-author, with Cohen and McKinley among other researchers, of three published papers on the kinds of fabrics and coatings that affect wettability.

One basic principle of a good fog-harvesting device is that it must have a combination of surfaces that attract and repel water. For instance, the shell of Stenocara gracilipes [the Namib beetle] has bumps that attract water and troughs that repel it; this way, drops collects on the bumps, then run off through the troughs without being absorbed, so that the water reaches the beetle's mouth.


(The Namib Desert beetle - photo by Andrew Parker)

SF fans are long familiar with this kind of technology. In his epochal 1965 book Dune, Frank Herbert wrote about the technology used to help human beings survive on a desert planet, one with no surface water.

Learn more about Dune technology like dew collectors. water-repellent surfaces, windtraps and dew gatherers.

Via MIT News.

Scroll down for more stories in the same category. (Story submitted 4/20/2011)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 0 )

Related News Stories - (" Engineering ")

MULTI Model Of Star Trek Turbolift
Cool prototype video!

Hand Gestures And Body Poses Control Devices
'He waved his hand... the circuit switched...'- Philip K. Dick, 1955.

Cellphone Harvests Power From Ambient Radio Signals And Light
A battery-free phone.

Chairless Chair Exoskeleton By Sapetti
'Earth's scientists... devised rigid metallic clothing...' - Edmond Hamilton, 1932.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

MULTI Model Of Star Trek Turbolift
Cool prototype video!

A Look Into The Future Of Spacecraft!
Ever wonder how you look when you enter a new part of a spacecraft?

An 'Ethical Black Box' For Robots?
Explored by science fiction authors.

Dadbot Digital Immortality
'A hardwired ROM cassette replicating a dead man's skills...'

Should We Permit Computers To Create Their Own Language?
'Talk Between Robots radio...'

Breakthrough Starshot Sprites Yearn For Alpha Centauri
'Whoever launched it fired a laser cannon...'

Kino Project Roaming Personal Fashion Robots
'Most of the crew have the tiny imp ride on their shoulder...'

Astronaut Exercise Video, Predicted By SF Writers
'Joe got out the gravity-simulator harnesses.'

First Crewless Ship? Umm
Autonomous Spaceport Drone Ship?

RFID Chipped Employees Of Three Square Market
'About a third of the people in Manhattan have replaced their Freedom Card with a radio-frequency chip...'

JAXA's Int-Ball Drone To Follow Astronauts In Space Station
'I want you to build me some of those.'

Amazon Patents Annoying Robot That Follows You
'The... machine, being homotropic, headed toward them, still bleating...'

Hand Gestures And Body Poses Control Devices
'He waved his hand... the circuit switched...'

Rovable Robots Crawl Across Your Body
'Most of the crew have the tiny imp ride on their shoulder...'

Sansar Social Virtual Reality Platform In 2017?
'And just as a daydreamer forgets his actual surroundings, and sees other realities...'

Cellphone Harvests Power From Ambient Radio Signals And Light
A battery-free phone.

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.