Subscribe free to our newsletters via your
. 24/7 Space News .




ENERGY TECH
Green walls, effective acoustic insulation
by Staff Writers
Leioa, Spain (SPX) Jan 06, 2015


On the research plant, modules were fitted onto a laboratory wall. Image courtesy UPV/EHU.

Zaloa Azkorra, an agricultural engineer of the UPV/EHU-University of the Basque Country, is conducting research at the University School of Mining and Public Works Engineering into the benefits provided by green walls. The researcher has concluded that walls comprising plants offer great potential for absorbing noise and could be used as acoustic insulation.

Right now, she is conducting thermal studies on them. The researcher believes they could be beneficial in the future to offer a greener image of towns and cities, to improve the life quality of citizens, to save energy, to increase biodiversity, to control rainwater, to lessen town/city noise and to minimize waste and pollution.

The Department of Thermal Machines and Motors of the University School of Mining and Public Works Engineering is exploring the energy efficiency of buildings by conducting tests on various materials. Zaloa Azkorra, an agricultural engineer, began to study the acoustic and energy efficiency of green walls to find out their performance, since these walls consisting of vegetation could be beneficial in improving the life quality of citizens.

Green walls are made up of plant modules: the plants are inserted into polyurethane boxes and are maintained by means of organic irrigation, in other words, they are fed and watered by means of a system similar to the hydroponic one used in greenhouses. It is not easy to grow plants this way or to insert them into a wall.

Noise absorption and insulation have been analysed while meeting the conditions established in ISO standards. The noise absorption test was carried out in a reverberation chamber (a chamber the walls of which are fitted with materials that reflect noise of the same type in all directions), using a range of frequencies.

Green walls have thus been found to perform very well in high as well as low frequencies with respect to noise reduction (whereas other materials used in buildings only perform well at either high or low frequencies). The way green walls may behave as acoustic insulation was also studied: plant modules were fitted onto a laboratory wall and the level of noise insulation was measured.

The conclusion reached was that with some slight improvements (like increasing the mass of the modules or covering the space between them) the system can be made more effective and, as a result, the green walls could be suitable for acoustic insulation.

Efficient, but costly
The researcher is proposing that green walls be used in buildings, inside and outside, as they can improve the temperature and, what is more, they can achieve acoustic improvements. What is more, "they are attractive and cool," said Azkorra.

But she also admitted at the same time that having such systems is costly and that, what is more, the systems need to be improved. As Azkorra pointed out, "apart from having plants on the walls, they have to be maintained and that is quite expensive". So right now she sees no alternative but to fit them in special buildings.

Now that the plant modules have been cultivated, she has begun to carry out thermal studies on them to study what benefits they can bring from the temperature perspective.


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

.


Related Links
University of the Basque Country
Powering The World in the 21st Century at Energy-Daily.com






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





ENERGY TECH
Chinese power companies pursue smart grids
Tianjin, China (SPX) Oct 21, 2014
After conducting an investigation about the current state of the operation of medium voltage distribution grids and the integration of distributed generation (DG) of renewable resources across China, scientists at the Key Laboratory of Smart Grid, under the auspices of the Ministry of Education, at Tianjin University in the east coast city of Tianjin, set out an array of R and D opportunities to ... read more


ENERGY TECH
Chinese spacecraft to return to moon's orbit

Russian Company Proposes to Build Lunar Base

'Shooting the Moon' with Satellite Laser Ranging

Moon Express testing compact lunar lander at Kennedy

ENERGY TECH
Potential Signs of Ancient Life in Mars Rover Photos

Inflatable 'Donut' to Bring Astronauts to Mars

New Project Scientist for Mars Rover

New analyses suggests water binds to sulfates in Martian soil

ENERGY TECH
Consumer tech show spotlights gadgets for healthy living

Electronics show a window into the 'Internet of Me'

Sporty tech gadgets put data in users' hands

GAO denies Sierra Nevada protest, OKs NASA crew contracts

ENERGY TECH
China launches the FY-2 08 meteorological satellite successfully

China's Long March puts satellite in orbit on 200th launch

Countdown to China's new space programs begins

China develops new rocket for manned moon mission: media

ENERGY TECH
SpaceX sets new launch date

Astronaut feels the force

Student Scientists Persevere, Ready to Launch Experiments to Space Station

ISS Crew to Raise Toasts for New Year's Eve 16 Times

ENERGY TECH
SpaceX to attempt rocket, cargo launch Saturday

Arianespace confident current and future launcher family will meet needs

Rocket glitch forces SpaceX to abort landmark launch

Summary of 2014 Civil and Commercial Launches

ENERGY TECH
Eight new planets found in 'Goldilocks' zone

Gemini Planet Imager produces stunning observations in its first year

CfA: Eight New Planets Found in "Goldilocks" Zone

Volunteer 'Disk Detectives' Classify Possible Planetary Habitats

ENERGY TECH
Electromagnetic waves linked to particle fallout in Earth's atmosphere

Uruguay receives mobile border surveillance system

3D printing could revolutionise war and foreign policy

Why some geckos lose their ability to stick to surfaces




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement All images and articles appearing on Space Media Network have been edited or digitally altered in some way. Any requests to remove copyright material will be acted upon in a timely and appropriate manner. Any attempt to extort money from Space Media Network will be ignored and reported to Australian Law Enforcement Agencies as a potential case of financial fraud involving the use of a telephonic carriage device or postal service.