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Breaking News rival for wind and solar  evaporating water | Breaking News

Rival For Wind And Solar: Evaporating Water

by: Hans van der Broek
rival for wind and solar  evaporating water | Breaking News

A vast source of renewable energy has been sitting under our noses. Evaporating water could supply enormous volumes of clean electricity if we can only harness it.

Rival For Wind And Solar: Evaporating Water

Evaporation is the process by which liquids turn into gases, generally when they are heated up. Every day, vast amounts of water evaporate from lakes and rivers, powered by heat energy from the sun. The scale of this energy is considerable.

According to Ozgur Sahin, water that evaporates from existing lakes and dams in the US – excluding the Great Lakes – could provide up to 2.85 billion megawatt-hours of electricity per year of Columbia University and colleagues. That is the equivalent of two-thirds of US electricity generation in 2015. In 15 of the 47 US states studied, the potential power exceeds demand. 

Recommended: How Tall Are Wind Turbines?

Covering freshwater bodies with engines that harness evaporation would halve water lost in this way, the team says. In seven US states, this would save more water than the entire state consumes. But the calculations assume that all the water is covered – which we would not want to do. Evaporation engines could also be put in other areas, from irrigated fields and greenhouses to sheltered bays, says Sahin.

Evaporating Water: Prototypes

But first, an evaporation engine needs to be built. Sahin’s team has created several miniature prototypes. The prototypes are all based on materials that shrink as they dry, such as tape coated with bacterial spores. The spores curl as they dry, shortening the tape. “They work like a muscle,” says Sahin. “They can push and pull with a lot of force.” 

To avoid being repeatedly soaked in water and becoming contaminated with dirt and chemicals, the prototypes exploit humidity changes.

In one version, the “muscle” sits just above the water. When shutters above it are closed, the humidity rises, and the material expands. That opens the shutters, allowing the material to dry out and shrink, and so on.

Such evaporation engines can run at night as well as day. Normally, there would be less evaporation at night, but blocking evaporation during the day stores energy in the form of warm water. “At night, you take advantage of this power,” says Sahin. “This is a great advantage.”

Recommended: Climate Change: Groundwater An out-of-sight Crisis

Engine Problems

Others agree that the potential is huge. The issue is harnessing it. “The question is whether there is any practical way to capture that energy,” says Ken Caldeira of the Carnegie Institution for Science in Stanford, California. He doubts it is possible to convert evaporation energy into electrical energy efficiently.

What’s more, developing evaporation engines to the point where they can be mass-produced is a huge task, and few groups are working on it. The technology would also have to compete directly with solar panels, as it is increasingly common for floating solar farms to be placed on reservoirs. But evaporation engines could be made from cheap biological materials that are easier to dispose of than solar panels, says Sahin.

If the technology does take off in a big way, it could affect local weather by reducing evaporation. But it will only make a difference if an area of 250,000 square kilometers is covered, the team calculates. At large scales, all forms of energy production, from wind to nuclear, can affect weather and climate. Besides, in a world of increasingly extreme rainfall, reducing evaporation could be desirable in some places.

Before you go!

Recommended: Hydrogen Is The Fuel Of The Future: Questions & Answers

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Breaking News, as the world changes…

In our world, WhatsOrb refuses to turn away from the changes in our society and environment which succeeds each other at a rapid pace.

For WhatsOrb, publishing on the environment is a priority. We give reporting on climate, nature, waste, lifestyle and sustainable solutions the prominence it deserves.

At this turbulent time for ‘all’ species and our planet, we are determined to inform readers about threats, consequences and solutions based on facts, not on political prejudice or business interests.

WhatsOrb Breaking News will be published as soon as urgent events from around the world and startling sustainable innovations reach us.

If there is anything we should know and publish about, please send a note to: [email protected] or write your own story on: www.whatsorb.comthe only news site which gives you a ‘sustainable voice!’

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Breaking News, as the world changes…

In our world, WhatsOrb refuses to turn away from the changes in our society and environment which succeeds each other at a rapid pace.

For WhatsOrb, publishing on the environment is a priority. We give reporting on climate, nature, waste, lifestyle and sustainable solutions the prominence it deserves.

At this turbulent time for ‘all’ species and our planet, we are determined to inform readers about threats, consequences and solutions based on facts, not on political prejudice or business interests.

WhatsOrb Breaking News will be published as soon as urgent events from around the world and startling sustainable innovations reach us.

If there is anything we should know and publish about, please send a note to: [email protected] or write your own story on: www.whatsorb.comthe only news site which gives you a ‘sustainable voice!’

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More like this:

Rival For Wind And Solar: Evaporating Water

A vast source of renewable energy has been sitting under our noses. Evaporating water could supply enormous volumes of clean electricity if we can only harness it. Rival For Wind And Solar: Evaporating Water Evaporation is the process by which liquids turn into gases, generally when they are heated up. Every day, vast amounts of water evaporate from lakes and rivers, powered by heat energy from the sun. The scale of this energy is considerable. According to Ozgur Sahin, water that evaporates from existing lakes and dams in the US – excluding the Great Lakes – could provide up to 2.85 billion megawatt-hours of electricity per year of Columbia University and colleagues. That is the equivalent of two-thirds of US electricity generation in 2015. In 15 of the 47 US states studied, the potential power exceeds demand.  Recommended:  How Tall Are Wind Turbines? Covering freshwater bodies with engines that harness evaporation would halve water lost in this way, the team says. In seven US states, this would save more water than the entire state consumes. But the calculations assume that all the water is covered – which we would not want to do. Evaporation engines could also be put in other areas, from irrigated fields and greenhouses to sheltered bays, says Sahin. Evaporating Water: Prototypes But first, an evaporation engine needs to be built. Sahin’s team has created several miniature prototypes. The prototypes are all based on materials that shrink as they dry, such as tape coated with bacterial spores. The spores curl as they dry, shortening the tape. “They work like a muscle,” says Sahin. “They can push and pull with a lot of force.”  To avoid being repeatedly soaked in water and becoming contaminated with dirt and chemicals, the prototypes exploit humidity changes. In one version, the “muscle” sits just above the water. When shutters above it are closed, the humidity rises, and the material expands. That opens the shutters, allowing the material to dry out and shrink, and so on. Such evaporation engines can run at night as well as day. Normally, there would be less evaporation at night, but blocking evaporation during the day stores energy in the form of warm water. “At night, you take advantage of this power,” says Sahin. “This is a great advantage.” Recommended:  Climate Change: Groundwater An out-of-sight Crisis Engine Problems Others agree that the potential is huge. The issue is harnessing it. “The question is whether there is any practical way to capture that energy,” says Ken Caldeira of the Carnegie Institution for Science in Stanford, California. He doubts it is possible to convert evaporation energy into electrical energy efficiently. What’s more, developing evaporation engines to the point where they can be mass-produced is a huge task, and few groups are working on it. The technology would also have to compete directly with solar panels, as it is increasingly common for floating solar farms to be placed on reservoirs. But evaporation engines could be made from cheap biological materials that are easier to dispose of than solar panels, says Sahin. If the technology does take off in a big way, it could affect local weather by reducing evaporation. But it will only make a difference if an area of 250,000 square kilometers is covered, the team calculates. At large scales, all forms of energy production, from wind to nuclear, can affect weather and climate. Besides, in a world of increasingly extreme rainfall, reducing evaporation could be desirable in some places. Before you go! Recommended:  Hydrogen Is The Fuel Of The Future: Questions & Answers Did you find this article about hydrogen energy in the Netherlands interesting? Or do you have a question or remark? Leave a comment below. We try to respond the same day. Like to write your article about new forms of energy? Send your writing & scribble with a photo to  [email protected] , and we will write an interesting article based on your input.
Stay Updated on Environmental Improvements And Global Innovations