Innovative Ways to Collect Water from Air

World water resources are being depleted quickly as populations grow, urbanize and demand better living standards. Many scientists believe we are reaching peak water – the point at which fresh water is consumed faster than it is replenished.

According to Ensia (ensia.com), a magazine showcasing environmental solutions in action, 70 per cent of the earth’s fresh water reserves are locked up in snow or ice, and are expensive to tap and bring to the world’s water-stressed places. Of the remainder, most is in groundwater, soil moisture, swamps or permafrost, while just 0.3 per cent is easy to access in freshwater lakes and rivers.

By far the biggest user of water in the world – accounting for 69 per cent of the total – is farm irrigation. That’s a serious concern when considering the world will need to grow more food to feed an increasing population. Just 1 per cent of water is used for livestock, while 15 per cent is used for electricity generation and 7 per cent for manufacturing. More water is currently being pumped from underground resources than is being replaced from underground aquifers.

The average person needs to consume 0.6 to 1.3 gallons (2.72 liters to 6 liters) of water per day to survive in a moderate climate. For drinking, cooking, bathing and sanitation, an individual needs 13 gallons (59 liters) a day (Ensia).

In many places, obtaining water requires a long trek to a well or stream. But non-desert climates have water as a resource readily available all around – trapped in the air. The clue to this resource’s existence is in the air’s humidity levels, the most visible sign of which is the dew that is found covering the grass and leaves every morning when people wake up. The trick is to extract that water from the air and create a steady supply of this essential resource.

Italian architect and designer Arturo Vittori (http://www.vittori-lab.com/team/arturo-vittori), a lecturer on aerospace architecture, technology transfer and sustainability, believes he has an answer.

Wired magazine (http://www.wired.com/2014/03/warka-water-africa/) reported that Vittori was inspired by a trip to Ethiopia, where he observed the daily struggle to get water. Access to water in northeastern Ethiopia often requires a long walk, which reduces the amount of time left in the day to do other things. Parents often take along their children, meaning the children cannot go to school. The time consumed by gathering water leaves people poorer and unable to dedicate more of their day to income-earning activities.

And there is no guarantee the water is safe to drink or free of chemical contaminants. This situation left Vittori pondering ways of coming up with an inexpensive solution that would eliminate the daily hassle of finding water and guarantee its quality.

The answer was a WarkaWater Tower (http://www.architectureandvision.com/projects/chronological/84-projects/art/492-073-warkawater-2012?showall=&start=1). The bamboo structure – which looks like an upended, latticework funnel – captures the dew and moisture in the air and collects it in a basket at the bottom.

The water collector is inspired by the Warka tree, or Ficus vasta (http://en.wikipedia.org/wiki/Ficus_vasta). Native to Ethiopia, it is known for providing shade and as a rendezvous point for traditional gatherings.

A WarkaWater Tower stands 8 meters in height and is made from either bamboo or reeds. Inside, a mesh traps humidity from the air and the water drips down into a basket. One tower can gather around 94 liters of water a day. The water is right there in the community and not kilometers away, meaning time and energy saved for income-generating tasks.

A WarkaWater Tower is constructed in sections, which are assembled and then stacked on top of each other. The construction does not need special scaffolding or special machinery. Once the tower is in place, it can also be used as a solar-power generator.

The tower is still a prototype and Vittori plans to build two towers for a launch in 2015.

In Peru, reports the Latin American Herald Tribune (http://www.laht.com/article.asp?ArticleId=700400&CategoryId=14095), another innovative solution to the water crisis has been developed by students at the University of Engineering and Technology (UTEC) (http://www.utec.edu.pe/Utec.aspx). The students have developed a highway advertising billboard that can draw drinking water out of the air. Inspired by a campaign called “Ingenuity in Action”, the students teamed up with a local advertising agency to design the billboard. It is capable of extracting water from the air and processing it through a filtration system as it flows down to a series of taps at the bottom.

The water-making billboard is at the 89.5 kilometer distance marker of the Pan-American Highway and has five electric-powered tanks that can hold a total of 96 liters of drinkable water. It is capable of providing enough water for hundreds of families. A true sign of our times!

By David South, Development Challenges, South-South Solutions

Published: July 2014

Development Challenges, South-South Solutions was launched as an e-newsletter in 2006 by UNDP's South-South Cooperation Unit (now the United Nations Office for South-South Cooperation) based in New York, USA. It led on profiling the rise of the global South as an economic powerhouse and was one of the first regular publications to champion the global South's innovators, entrepreneurs, and pioneers. It tracked the key trends that are now so profoundly reshaping how development is seen and done. This includes the rapid take-up of mobile phones and information technology in the global South (as profiled in the first issue of magazine Southern Innovator), the move to becoming a majority urban world, a growing global innovator culture, and the plethora of solutions being developed in the global South to tackle its problems and improve living conditions and boost human development. The success of the e-newsletter led to the launch of the magazine Southern Innovator.  

Follow @SouthSouth1

Google Books: https://books.google.co.uk/books?id=qBU9BQAAQBAJ&dq=development+challenges+july+2014&source=gbs_navlinks_s

Slideshare: http://www.slideshare.net/DavidSouth1/development-challenges-july-2014-published

Southern Innovator Issue 1: https://books.google.co.uk/books?id=Q1O54YSE2BgC&dq=southern+innovator&source=gbs_navlinks_s

Southern Innovator Issue 2: https://books.google.co.uk/books?id=Ty0N969dcssC&dq=southern+innovator&source=gbs_navlinks_s

Southern Innovator Issue 3: https://books.google.co.uk/books?id=AQNt4YmhZagC&dq=southern+innovator&source=gbs_navlinks_s

Southern Innovator Issue 4: https://books.google.co.uk/books?id=9T_n2tA7l4EC&dq=southern+innovator&source=gbs_navlinks_s

Southern Innovator Issue 5: https://books.google.co.uk/books?id=6ILdAgAAQBAJ&dq=southern+innovator&source=gbs_navlinks_s

This work is licensed under a
Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.

Time-Tested Iranian Solutions to Cool and Refrigerate

Keeping food cool is critical for human health. No matter what the climate, a cool environment will prolong food preservation, stave off spoilage and lower the risk of food poisoning. This is crucial for the poor because it means they can reduce food waste and avoid illnesses caused by food poisoning. Diarrhea is a common problem when people do not have access to refrigeration for their food.

Food security is also enhanced, as more can be stored and less thrown away as waste. Keeping food cool also means less need for preservation techniques, such as using salt, spices or smoke. Salt and smoke both can have adverse affects on human health. Salt increases sodium in the diet, which leads to high blood pressure, and smoke is a carcinogen which can lead to various forms of cancer.

It is healthier to keep food in its natural state – and keep it cool.

While the invention of the electric refrigerator was a major breakthrough, it requires a steady supply of electricity, which is expensive and difficult for many people.

Various pre-electric refrigeration technologies have been developed over the centuries. Among them was a pioneering technology used in Persia (modern-day Iran) as far back as the 11th century (http://en.wikipedia.org/wiki/Avicenna). And now, it is being looked to once again today as a sustainable refrigeration solution that does not damage the environment.

Iran’s solution involves creating a domed ice house made from earth bricks. Many ancient ice houses have been discovered on the edge of deserts, where ice was scarce and supplies remote. The solution was to create a dugout channel at the rear of a domed house and then flood the channel with water. When the temperature dropped at night in the desert, the water would freeze into ice.

Rising early in the morning, the resident would break up the ice into blocks and store them inside the ice house. This was repeated night after night until there was enough ice in the house that it could last the summer months.

The water was drawn from elaborate irrigation systems used for farming.

The ice houses were cone and dome-shaped and included some with underground structures. To date, a project headed by Dr. Hemming Jorgensen has documented 129 centuries-old ice houses at the fringe areas of large deserts in Iran. Jorgensen, from the University of Copenhagen in Denmark, has documented the use of these structures on his “Ice Houses of Iran” website (http://www.hemmingjorgensen.com/).

In 18th and 19th century England, ice houses were also common place in country estates to keep food cool in kitchens. Today, there are growing numbers of people around the world who are turning to technologies such as ice houses to find sustainable, non-electric, low-carbon alternatives to electric refrigeration.

Another environmentally friendly cooling solution from Iran involves using wind catchers to circulate air during the hotter months. Called bagdir wind towers, or windcatchers (http://en.wikipedia.org/wiki/Windcatcher), they have been used in Yadz, Iran since the 19th century.

Profiled in Green Building Magazine (http://www.greenbuildingpress.co.uk/product_details.php?category_id=10&item_id=235), the wind towers are made of stone, and channel wind down into a shaft to cool or heat the rooms below. It is an air circulation solution that does not take any energy – because it uses the wind – and is carbon neutral. In summer, the wind is drawn down into a stone chimney by low air pressure zones in the ventilation system. It is cooled, and then is circulated through the dwelling, rising as it warms up through the house. This is combined with a strategy of moving rooms depending on how hot or cool they are, adjusting clothing based on the temperature, or even placing water on the floor to cool the air.

In Nigeria in West Africa, a cooler called the zeer (http://practicalaction.org/zeer-pots) has been developed. It works like this: two ceramic earthenware pots of different sizes are arranged one inside the other. The space between the pots is filled with wet sand and kept moist. The user then places drinks or vegetables inside and covers it with a damp cloth. As the water from the moist sand evaporates (http://en.wikipedia.org/wiki/Evaporation), the air inside the centre pot is cooled several degrees, enough to preserve some foods and drinks.

By David South, Development Challenges, South-South Solutions

Published: June 2013

Development Challenges, South-South Solutions was launched as an e-newsletter in 2006 by UNDP's South-South Cooperation Unit (now the United Nations Office for South-South Cooperation) based in New York, USA. It led on profiling the rise of the global South as an economic powerhouse and was one of the first regular publications to champion the global South's innovators, entrepreneurs, and pioneers. It tracked the key trends that are now so profoundly reshaping how development is seen and done. This includes the rapid take-up of mobile phones and information technology in the global South (as profiled in the first issue of magazine Southern Innovator), the move to becoming a majority urban world, a growing global innovator culture, and the plethora of solutions being developed in the global South to tackle its problems and improve living conditions and boost human development. The success of the e-newsletter led to the launch of the magazine Southern Innovator.  

Follow @SouthSouth1

Google Books: https://books.google.co.uk/books?id=HfZcAwAAQBAJ&dq=development+challenges+june+2013&source=gbs_navlinks_s

Slideshare: http://www.slideshare.net/DavidSouth1/development-challenges-june-2013-issue

Southern Innovator Issue 1: https://books.google.co.uk/books?id=Q1O54YSE2BgC&dq=southern+innovator&source=gbs_navlinks_s

Southern Innovator Issue 2: https://books.google.co.uk/books?id=Ty0N969dcssC&dq=southern+innovator&source=gbs_navlinks_s

Southern Innovator Issue 3: https://books.google.co.uk/books?id=AQNt4YmhZagC&dq=southern+innovator&source=gbs_navlinks_s

Southern Innovator Issue 4: https://books.google.co.uk/books?id=9T_n2tA7l4EC&dq=southern+innovator&source=gbs_navlinks_s

Southern Innovator Issue 5: https://books.google.co.uk/books?id=6ILdAgAAQBAJ&dq=southern+innovator&source=gbs_navlinks_s

This work is licensed under a
Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.

Iranian Savings Funds to Tackle Loan Drought

For entrepreneurs around the world, acquiring finance to start or expand a small business has become harder and harder as the global financial crisis has bitten hard. Across the globe, people with good ideas or successful businesses that need funds to expand are finding the door closed by traditional banks.

As banks and governments have focused on reducing debt and building up cash reserves, it is small businesses and small-scale entrepreneurs – often without business or family connections – who suffer the most. Opportunities are being missed to create new jobs and enterprises and lift poor communities out of poverty.

In that climate, the search is on for alternative ways to build up wealth. In Iran, a new phenomenon has arisen to address the lack of bank loans for small businesses brought about by the economic crisis. Iran is suffering under international sanctions as well as outstanding bank loans exceeding US $45 billion, according to the Financial Times.

The domestic banking crisis this has provoked has resulted in a tightening of credit for loans.

But in response, middle class Iranians are forming their own savings clubs to help each other with loans.

The savings clubs work like this: each member buys a share in the club costing around US $2 per day (around US $620 over 10 months). Each share makes the saver eligible for one loan during the year. For example in a club of 30 Tehran taxi drivers, every month four members of the club receive US $600 each in loans. The fund lasts 10 months and each member is guaranteed one loan per share.

“It is a savings fund and doesn’t have the uncertainty of the banking system, which might or might not give you a loan,” club member Ahmad told the Financial Times newspaper. As one of the drivers, he has four shares and is eligible for four loans.

“My mother is also saving money in a fund of housewives among our female relatives.”

The fund is managed by the head of the taxi agency and a driver who is a retired teacher. Both are trusted. “The retired teacher receives the money every day and puts a check mark by the names of those who pay. He is trusted by the head of the taxi agency, while other drivers respect him as an educated, honest man.”

Savings clubs are also good for the local economy, helping people to be able to buy goods on loans they would never be able to purchase otherwise. Another driver used the fund to “buy the things we cannot afford under normal conditions, like a washing machine, for instance, for which we have zero chance to get bank loans.”

Overdue loans by Iran’s banks grew by 66 percent from last year according to Asghar Abolhassani, the deputy economy minister.

The Financial Times reported that an estimated 25 percent of bank loans are outstanding, making Iran’s banking system technically bankrupt. International sanctions are also blocking the country’s banks from accessing global financial markets for support.

“Stagnation has gripped many parts of the economy,” said Hamid Tehranfar, the central bank’s director-general for banking supervision.

Turning to savings clubs can be an excellent alternative saving and loans model, but it requires very specific trust guarantees in place to ensure the holder of the funds doesn’t just take the money. For those who can’t find somebody local they trust, there are a number of online social lending and fundraising alternatives for raising funds and borrowing money. These include Kiva (www.kiva.org), which connects poor people looking for loans with people around the world willing to lend.

As the crisis continues and banks and governments hoard wealth for their own needs to pay down debt, alternative sources of loans will become ever more important for the poor.

By David South, Development Challenges, South-South Solutions

Published: April 2010

Development Challenges, South-South Solutions was launched as an e-newsletter in 2006 by UNDP's South-South Cooperation Unit (now the United Nations Office for South-South Cooperation) based in New York, USA. It led on profiling the rise of the global South as an economic powerhouse and was one of the first regular publications to champion the global South's innovators, entrepreneurs, and pioneers. It tracked the key trends that are now so profoundly reshaping how development is seen and done. This includes the rapid take-up of mobile phones and information technology in the global South (as profiled in the first issue of magazine Southern Innovator), the move to becoming a majority urban world, a growing global innovator culture, and the plethora of solutions being developed in the global South to tackle its problems and improve living conditions and boost human development. The success of the e-newsletter led to the launch of the magazine Southern Innovator.  

Follow @SouthSouth1

Google Books: https://books.google.co.uk/books?id=RR6YBgAAQBAJ&dq=development+challenges+april+2010&source=gbs_navlinks_s

Slideshare: http://www.slideshare.net/DavidSouth1/development-challengessouthsouthsolutionsapril2010issue

Southern Innovator Issue 1: https://books.google.co.uk/books?id=Q1O54YSE2BgC&dq=southern+innovator&source=gbs_navlinks_s

Southern Innovator Issue 2: https://books.google.co.uk/books?id=Ty0N969dcssC&dq=southern+innovator&source=gbs_navlinks_s

Southern Innovator Issue 3: https://books.google.co.uk/books?id=AQNt4YmhZagC&dq=southern+innovator&source=gbs_navlinks_s

Southern Innovator Issue 4: https://books.google.co.uk/books?id=9T_n2tA7l4EC&dq=southern+innovator&source=gbs_navlinks_s

Southern Innovator Issue 5: https://books.google.co.uk/books?id=6ILdAgAAQBAJ&dq=southern+innovator&source=gbs_navlinks_s

This work is licensed under a
Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.