Featured Research

from universities, journals, and other organizations

Research will help submariners breathe more easily

Date:
June 17, 2010
Source:
University of Bath
Summary:
Engineers in the UK and US are teaming up to develop a chemical-free way of removing carbon dioxide from the air inside deep sea human habitats.

Professor Stan Kolaczkowski and his team from Chemical Engineering at the University of Bath are collaborating with mechanical engineers from Duke University in the US to develop a chemical-free way of removing carbon dioxide from the air inside deep sea human habitats.

They are developing a system that uses sea water and Dixon rings in deep sea submersible vehicles and other submersible human habitats. The project is funded by a three year grant worth 380,000 from the US Office of Naval Research (ONR).

At present, chemicals such as calcium hydroxide are used to chemically react with the CO2. Although it is known that sea water has potential to absorb CO2, the aim of this project is to develop a system that will be compact and work in a submersible environment where space is very limited.

Based on technology developed in 1948, Dixon rings consist of a fine wire mesh folded into a ring, approximately 3 mm in size. The space in the wire mesh provides an extended surface area for the absorption of the CO2.

Many rings are packed into a column through which gas and liquid flow in a counter-current direction. The combination of salt water and Dixon rings form a compact gas scrubbing unit, which removes CO2 from a closed-circuit breathing environment before safely discharging it into the sea.

Using this system, chemicals to absorb CO2 will no longer be needed in the submersible environment and time spent on the sea bed could be extended.

Professor Kolaczkowski said: "Chemical engineers are excited about using Dixon rings in applications where gaseous or volatile species are transferred between gas and liquid phases and where the device needs to be compact.

"With the Computational Fluid Dynamic modeling skills at S&C Thermofluids Ltd, we will make rapid progress with developing novel and compact gas scrubbers. The removal of carbon dioxide from exhaled air is a great application. There will be many more possibilities to consider."

Dr Lew Nuckols of Duke University said: "An estimated 90 per cent of human-produced carbon dioxide is absorbed by oceans. The research at Bath, in partnership with us, could revolutionise techniques to remove metabolically-produced carbon dioxide from sub-sea operations."

"Any research aimed at carbon dioxide absorption is very beneficial," said Dr Tony Smith of S&C Thermofluids in Bath. "We're pleased to be working on this project, particularly because there will be experimental validation of the predictions.

"Being a diver, I am aware of the difficulties with supplying sufficient quantities of breathable air underwater. This research is looking at a very practical and elegant solution to a difficult problem."


Story Source:

The above story is based on materials provided by University of Bath. Note: Materials may be edited for content and length.


Cite This Page:

University of Bath. "Research will help submariners breathe more easily." ScienceDaily. ScienceDaily, 17 June 2010. <www.sciencedaily.com/releases/2010/06/100617102610.htm>.
University of Bath. (2010, June 17). Research will help submariners breathe more easily. ScienceDaily. Retrieved September 30, 2014 from www.sciencedaily.com/releases/2010/06/100617102610.htm
University of Bath. "Research will help submariners breathe more easily." ScienceDaily. www.sciencedaily.com/releases/2010/06/100617102610.htm (accessed September 30, 2014).

Share This



More Earth & Climate News

Tuesday, September 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Earth Has Lost Half Its Vertebrate Wildlife Since 1970: WWF

Earth Has Lost Half Its Vertebrate Wildlife Since 1970: WWF

Newsy (Sep. 30, 2014) A new study published by the World Wide Fund for Nature found that more than half of the world's wildlife population has declined since 1970. Video provided by Newsy
Powered by NewsLook.com
Seismic Activity Halts Recovery at Japan Volcano

Seismic Activity Halts Recovery at Japan Volcano

AP (Sep. 30, 2014) Rescuers were forced to suspend plans to recover at least two dozen bodies from near the summit of Mount Ontake in central Japan on Tuesday after increased seismic activity raised concern about the possibility of another eruption. (Sept. 30) Video provided by AP
Powered by NewsLook.com
Dolphins Might Use Earth's Magnetic Field As A GPS

Dolphins Might Use Earth's Magnetic Field As A GPS

Newsy (Sep. 30, 2014) A study released Monday suggests dolphins might be able to sense the Earth's magnetic field and possibly use it as a means of navigation. Video provided by Newsy
Powered by NewsLook.com
How To Battle Stink Bug Season

How To Battle Stink Bug Season

Newsy (Sep. 30, 2014) Homeowners in 33 states grapple with stink bugs moving indoors at this time of year. Here are a few tips to avoid stink bug infestations. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins