#Tidal energy
fuckyeahfluiddynamics · 2 months
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Shetland needs help please stay and read
Our home has been taken from us before we are not willing for it to be taken again.
A bit about Shetland. We are a group of islands most commonly associated with Scotland but we are originally Norse. We are known for our islands beauty, vibrant nature and our strong Norse connection. There is a lot about Shetland but what's most important now is we need help.
Our home is in danger, our council does not care about us or our home they only care about filling their pockets with government money. They do not represent us the people, they only represent their own greed and ignorance.
They destroy our home in the name of green energy whilst digging up peatland and plant-life. They do not care about climate change otherwise they would know that peatland absorbs over 3% of the world's carbon, our peatlands are thousands of years old and digging them up does irreparable damage to the environment. They're "plan" to fix this is to "resettle" the peatland, they've explained that they'd put it back into the ground once they've finished digging it all up, they've been warned by many professionals that is not only ridiculously wrong it is incredibly dangerous as it leads to sinkholes and unstable shifts in the land.
The destruction of peatbanks has also lead to runoff into our lochs and landslides onto the roads.
This is what they've done to our peatbanks.
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They use the windmills as an excuse to fill their pockets whilst they do damage that can never be undone, they drive people out of their homes and construct these metal monstrosities that do more damage than good.
Shetland would be the ideal place for tidal turbines as we have strong tides and they'd be well liked as they don't disturb the landscape or cause irreparable damage to the world. The council chose to build windmills as it meant big money fast instead of going with tidal turbines.
Mainland Britain does not care about us, they would quite happily see us turned into a "power hub" and forgotten about. We are already being framed as the villians for not giving up our home to be destroyed, they have tried to say we're doing this because we want the oil back when that's not at all what we want. We want green energy that will actually work for us without destroying our home.
Our home has been taken from us before we are not willing for it to be taken again.
Here are some links if you want more information:
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hexora · 6 days
Seashell Divination Kit: A Refined Collection of Consecrated Seashells for Spiritual Inquiry
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🌟 The Essence of Seashell Divination:
Seashell divination is an ancient practice that harnesses the elemental forces of the ocean to illuminate inquiries of the soul. The Seashell Divination Kit offers a refined and purposeful approach to this age-old tradition, providing seekers with a channel to access profound insights and attain clarity on matters of importance. Each shell within the collection serves as a vessel for the boundless wisdom encapsulated by the vastness of the sea.
🐚 The Significance of Each Shell:
Conch Shell 🌀: Emblematic of life's eternal spiral, the conch shell is a symbol of cyclical renewal and spiritual evolution. It is a venerable guide for those seeking transformation and a deeper understanding of their spiritual journey.
Cowrie Shell 🐚💰: Revered across cultures for its association with prosperity, the cowrie shell serves as a conduit for energies related to abundance, wealth, and the manifold blessings that life bestows.
Scallop Shell 🌸: Radiating with the essence of love and beauty, the scallop shell imparts insights into matters of the heart, relationships, and the pursuit of harmonious equilibrium.
Auger Shell 🔍: Characterized by intricate spirals, the auger shell serves as a key to unlocking hidden knowledge and solving enigmatic mysteries. It is a beacon for those seeking to expand their awareness and unravel life's intricate puzzles.
Clam Shell 🧘‍♀️: A symbol of inner peace and tranquility, the clam shell offers grounding energies, aiding in meditation, mindfulness, and the cultivation of serenity amidst life's complexities.
🌊 Guidance for Utilization:
Establishing Sacred Space: Prior to engaging in the divination process, create a serene environment conducive to spiritual introspection. Light candles, burn incense, and establish an atmosphere of reverence.
Intent Clarification: Articulate your intentions clearly, opening your heart to the profound guidance the seashells are poised to impart.
Discernment of Shells: Trust your intuition as you select a shell from the collection. Each shell resonates uniquely, responding to the energy of your specific inquiry.
Interpreting Symbolism: Delve into the symbolism inherent in the chosen shell, allowing its energy to communicate answers through intuitive insights, subtle impressions, or vivid visions.
Expressing Gratitude: Conclude the divination session with a gesture of gratitude towards the sea, the shells, and the cosmos for the profound insights bestowed. Acknowledge the interconnected nature of existence and integrate the acquired wisdom into your daily life.
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wifeofaxlrose · 2 years
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realbadatpoker · 3 months
Normies: 0
Realbadatpoker wacky conspiracies: 10,000
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greentechspot · 4 months
The Blue Economy: Balancing Economic Growth and Ocean Conservation
The world’s oceans cover more than 70% of the Earth’s surface and play a crucial role in supporting life on our planet. Not only do they provide food, livelihoods, and recreational opportunities, but they also serve as a vast source of economic potential. The concept of the Blue Economy recognizes the importance of harnessing the economic opportunities provided by our oceans while ensuring their…
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dsiddhant · 1 year
The global wave energy converter market is estimated to be valued at USD 20 million in 2022 and is projected to reach USD 28 million by 2030 growing at a CAGR of 4.3% during...
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renrev21 · 1 year
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An item number sung by Sayani Palit & Prajna Dutta
Available in all music streaming platforms
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earaercircular · 1 year
How sustainable is Scotland?
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Hydrogen refuelling station, port of Kirkwall Scotland
A lot is happening in the field of sustainability. Certainly not only in the Netherlands or Belgium. In fact, there are several countries and states from which we can learn a lot in the Netherlands. Change Inc. sort them out during the summer months. This time: Scotland.
Scotland excels in renewable energy generation. In 2020, Scotland generated 12 gigawatts of renewable energy. This covered 97.4 percent of the total electricity demand that year. Scotland gets its renewable energy from a variety of sources. And as is often the case, the country's unique location plays a crucial role here.
1. Sell back wind energy
Due to its location by the sea and long valleys that stimulate wind currents, it can be quite windy in Scotland. The wind was feared for a long time. Farmers in particular are vigilant because high winds can destroy their crops.
Through efficient government policy, Scotland managed to turn the risks of the wind into an opportunity. Farmers were encouraged early on to place wind turbines in their yards. These turbines primarily generate sustainable energy for the farms. But they generate much more than the farmers need. Therefore, the latter can sell the surplus to the national electricity grid. The farmers use the yield to compensate any costs caused by wind damage.
2. Hydropower
Another important source of energy in Scotland is hydropower. 85 percent of all hydroelectric power stations in the UK are located in Scotland. Together these account for 1.65 gigawatts. Not only does a hydroelectric power station generate electricity, it can also be used to store excess renewable energy such as coming from sun and wind. The largest power stations in Scotland have a storage capacity of 2.8 gigawatts for five hours. When the water is released, this drops to 1.1 gigawatts within 22 hours.
3. Tidal energy
Scotland's location enables it to utilise other natural resources. The sea north of Scotland is one of the roughest in the world. The Scots want to exploit this movement by generating energy from waves and tides. Both techniques are still in infancy.
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Orbital Marine. The turbine looks like an airplane with wings with propellers attached to it.
In any case, tidal energy has a major advantage over wave energy: ebb and flow are predictable. A company that sees a lot of potential in tidal energy is Orbital Marine Power. In 2020, a 72-meter-long colossus resembling a plane with gigantic rotor blades sailed to the Scottish Orkney Islands for its first field tests. Last year, the system supplied power to the UK grid for the first time.
4. Hydrogen
With all the investment in renewable energy, there is a good chance that Scotland will increasingly produce more electricity than its 5.5 million inhabitants need in the future. Therefore, one of the country's biggest challenges is how to store all the energy it generates, so that it can be used on days when the wind is less windy, for example.
So part of the solution lies in hydroelectric power stations. But an important energy carrier is, of course, hydrogen. There are electrolysers at various locations along the coast of Scotland that convert wind and tidal energy into hydrogen on a small scale. For example, this hydrogen is used in the port of Kirkwall to provide ferries with sustainable fuel.
Teun Schröder, Hoe duurzaam is Schotland?, in: ChangeInc, 28 juli 2022; https://www.change.inc/energie/naam-duurzaamheid-over-de-grens-schotland-38670
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Bay of Fundy Tidal Power Generation System Officially Powers Up
After years of research and several months since the platform first successfully delivered power to the Nova Scotia grid, the tidal generation system in the Bay of Fundy is officially ready to launch commercial operations. Developed by Scottish company Sustainable Marine in partnership with provincial and federal governments in Canada, this tidal power system is the first of its kind in Canada.
One of Canada’s largest investments in tidal energy, the project in the Bay’s Grand Passage has received $28.5 million in funding. It is part of Sustainable Marine’s efforts to create the world’s first floating tidal array at FORCE (Fundy Ocean Research Centre for Energy), which will be delivered in phases as the company learns from the operations of the current platform. The Bay of Fundy is an immense source of tidal energy, with the potential to generate roughly 2,500 MW of power. The tidal forces are so strong that one of the biggest challenges for the project has been building a structure that could sit passively amid heavy tidal forces.
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The platform uses a set of turbines and attaches to a mooring system to keep it in place amidst the movement of the water. Over the next several months, the company will monitor the platform and gradually increase power production in order to test its technologies and systems. After that Sustainable Marine will move on to the Minas Passage, dubbed the “Everest of tidal energy,” as Nova Scotia continues to phase out coal-fired electricity on the way to its goal of net-zero emissions.
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hexora · 8 days
Tidal Pendulum: Unveiling Oceanic Insights
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🔍 Understanding the Tidal Pendulum:
The Tidal Pendulum represents a convergence of craftsmanship and elemental energies. Rooted in the timeless tradition of divination, this instrument capitalizes on the symbolic resonance of oceanic components to facilitate a nuanced connection with the natural forces governing the tides.
🐚 Materials and Symbolic Significance:
Seashells 🌀: Each seashell integrated into the Tidal Pendulum embodies a specific elemental energy and imparts symbolic significance. Choose from a curated selection to align your divination queries with the intended energetic resonance.
Driftwood 🌲: Crafted from weathered driftwood, the pendulum's handle symbolizes resilience, adaptability, and the cyclical nature of existence. This component serves as a grounding force, anchoring the divination process in earthly energies.
💧 The Art of Tidal Divination:
Preparation and Setting: Initiate your divination session in a tranquil environment conducive to introspection. Create an ambiance of focused contemplation by employing subdued lighting and calming elements.
Calibration of Intentions: Prior to employing the Tidal Pendulum, articulate your intentions clearly. Frame your queries with precision, allowing the pendulum to channel the nuanced guidance inherent in the ebb and flow of the tides.
Pendulum Oscillation: Engage in the divination process by allowing the Tidal Pendulum to oscillate freely. Observe the subtle movements and patterns as they unfold, interpreting each swing with deliberate consideration.
Interpreting Symbolic Movements: The pendulum's movements serve as a symbolic language, akin to the rhythmic language of the tides. Develop a nuanced understanding of these movements, interpreting them as responses to your queries.
Closure and Reflection: Conclude your divination session with a moment of reflection. Express gratitude for the guidance received and contemplate the insights garnered from the Tidal Pendulum's nuanced dance.
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inceptivemind · 2 years
Idénergie’s portable and recyclable river turbine produces 12kWh of power daily
The Darrieus-type turbines present no harm to the aquatic fauna and flora. @Idenergie_Inc #RenewableEnergy #electricity #TidalEnergy #CleanEnergy #recyclable
Since many countries pledge to shift away from coal and end fossil fuels, there is a need to develop technologies that allow the use of renewable energy sources. Even though solar panels and wind turbines are used in most cases, both of these systems have their limitation when it comes to power generation. For example, the power of wind turbines is highly dependent on wind speed, and solar panels…
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hennethgalad · 2 years
"Fossil fuel sales provide 40 per cent of Putin’s income to fund his war-machine. Could anything more symbolise the depth of our addiction to fossil fuels?"
you made your bed.
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aquitainequeen · 1 year
Behind a paywall after you've read a certain number of articles, so;)
In 1851, Charles Babbage, the English mathematician and inventor, found himself preoccupied with what might happen should coal mines—then and now one of the primary sources of usable energy—become depleted. He concluded that “the sea itself offers a perennial source of power hitherto almost unapplied.” Babbage was talking about tides, those lunar-guided movements of the world’s oceans, and the very synonym of dependable constancy. But while his Difference Engine, a mechanical calculator seen as a seminal fore-runner to the computer, would essentially go on to remake our world, Babbage’s ideas about tidal power drifted in the undercurrent for the next century and a half, largely the province of dreamers.
Lately, however, buoyed by successful demonstration projects and a new interest in renewable energy bolstered even further by Europe’s anticipated turning off of Russian taps, tidal energy is moving increasingly into the mainstream. While the number of megawatts produced annually by tidal—in places from Canada’s Bay of Fundy to South Korea’s Sihwa Lake—is still small, notes Donagh Cagney, policy director for the advocacy group Ocean Energy Europe, “the increase is exponential.” For example, by 2050, tidal energy is expected to account for 11% of the U.K.’s electricity, compared with just 3% today.
But in remote coastal Scotland, some residents are already getting a taste of that future. Scotland has become to tidal energy what Saudi Arabia is to fossil fuels. Cagney chalks this up to several factors, ranging from its geography—the country is blessed with some of the world’s fastest-moving tidal sounds—to its experience in working with offshore oil extraction. For those reasons, it has for almost two decades hosted the world’s biggest grid-connected test bed for tidal energy, the Euro-pean Marine Energy Centre (EMEC). Founded in 2003, it’s headquartered in the Orkney Islands, off Scotland’s northern coast. Neil Kermode, the center’s director since 2005, has seen some 35 tidal-energy projects tested, by startups that have come and gone—some shuttered for lack of capitalization or nonviable technology, some absorbed by larger companies like GE.
But the biggest project ever run at EMEC is still there, providing power for 1 in 12 Orcadian households. The O2, as it’s dubbed, created by the Scottish company Orbital Marine, weighs some 680 tons, is longer than a Boeing 747, and skims the top of the water like the world’s largest rowing scull. “It looks like, well, a yellow submarine,” says Kermode. “When you see it, and the tide is roaring past, it’s really hard to realize it’s stationary. There’s a real optical illusion—you think this thing is being towed through the water.” But the O2 is chained to the seabed, via four cables, each capable of lifting some 50 double-decker buses off the ground. Only the water is moving, pushing two 10-m.-long turbines with some 100 metric tons of pressure, and continuously generating 2,000 megawatts (mW), enough to power roughly 2,000 homes.
For the entrepreneurs and researchers dedicated to harnessing that power, the ocean—that primordial space out of which so much of life on earth emerged—seems destined to once again supply the forces that will help create a new phase of history. But as anyone who has ever battled the waves by boat or board knows, taming the tides will be a gargantuan task.
The idea is simple. First, tides. They rise and fall predictably, relentlessly driven by the gravitational pull of the moon. Those traits combined make the tide an attractive proposition for powering the grid. “The sun doesn’t always shine; the wind doesn’t always blow,” notes Simon Forrest, the CEO of Scotland-based tidal-power producer Nova Innovation. But with tidal, he says, “we can tell you how much we will be generating two minutes past 3 in the morning a month from now, five years from now.”
Second, you need what is basically the equivalent of a wind turbine, placed underwater (either moored to the seabed or attached to the underside of some floating structure), which drives a generator. And luckily, water is denser than air, by some 800 times. “You tend to get a more compact, powerful source of energy,” says Forrest. “Our turbines are a lot smaller than wind turbines, but produce a lot more bang for the buck.” Nova, in particular, has other advantages: where the O2 floats, Nova’s turbines lie beneath the ocean surface. “Our technologies are unaffected by storms,” says Forrest. There’s no visual impact, he says—aesthetics have been a reason many people have objected to wind turbines in the past—and do not create hazards for shipping or other marine operations.
Nova billed its initial deployment, in Scotland’s Shetland Islands in 2016, as the “world’s first offshore tidal array.” There are now six turbines in Shetland’s Bluemull Sound, powering homes and, thanks to a collaboration with Tesla, electric-vehicle charge points as well. After the success of that project, authorities granted Nova a license to build a 50-mW array, which will provide up to one-third of Shetland’s power.
“We’ve been producing clean, predictable power for six years in Shetland,” says Forrest. “And you don’t see it.” Another thing that consumers on Shetland—or Orkney—do not see is the true price of their energy use on their monthly bills, thanks to government subsidies. For the technology to grow and spread globally, tidal-energy companies will need to reduce costs through scale and technology-driven efficiency improvements. It’s not a fantasy; for example, in the U.S., the price of wind power has fallen 70% over the past decade.
There is the question of how mass deployment of tidal turbines might impact the seas. “If you are putting something in the ocean that is extracting energy, [you] are perturbating the ocean,” says Michela de Dominicis, a senior scientist with the U.K.’s National Oceanographic Centre. “This can have cascading effects,” like disrupting the nutrient mix of ocean ecosystems as well as raising water temperatures. Her research suggests, however, that any disturbances may well be worth it. “In one of my papers I was showing that even if I’m putting like 20,000 turbines at sea and I’m perturbating the environment,” she says, “this effect is one order of magnitude less than what can happen with climate change.”
Tidal energy’s biggest hurdle may simply be the limited number of places in the world where it’s possible. In the U.S., aside from a small project in New York’s East River—which powers the equivalent of fewer than 400 homes—few sites have been identified that have the promise of Scotland’s waters. What the U.S. does have in abundance is coastline, which speaks to the promise of another ocean-energy source: waves. Despite an early burst of enthusiasm for wave power a few decades ago, tidal has since eclipsed it, in part because the open seas make for a more challenging environment. “It’s an unconventional resource,” says Andrew Scott, the CEO of Orbital Marine, who previously worked at Pelamis, an early and now defunct wave-power startup. “Waves have a vertical excursion. They’ve got a horizontal excursion. They’ve got a cyclical motion; they’ve got buoyance force; they’ve got different wavelengths that come at different angles. There’s no conceptual agreement … as to how you’re going to capture the energy.”
Given the potential payoff, however, people keep seeking new solutions. Inna Braverman, co-founder and CEO of the Israeli startup Eco Wave Power, thinks that early wave-power pioneers erred in trying to work far offshore. “The price was sky-high,” she says. “You need divers; you need to put all the conversion equipment inside the actual floaters that are in the middle of the sea.” Her company instead affixes wave-driven generators to onshore features like breakwaters. A pilot project in Gibraltar has been providing power for roughly 100 homes since 2016 at a fraction of the cost of offshore wave projects, she says. And the company is ramping up, with megawatt-level projects in Portugal and, most recently, the Port of Los Angeles.
Whether it’s moving on a wave or via the tide, water seems an integral part of the future energy equation. “The low-hanging fruit of wind and solar has been plucked,” says Cagney. “To get to net zero, we’re going to need every renewables resource we’ve got.” And as the global impacts of the Russian invasion of Ukraine underscore, energy security requires having a diversity of inputs. “There’s an advantage in having an energy source driven by a different sort of forces, because it means they don’t all align at the same time,” says Forrest. “If the wind doesn’t blow, it doesn’t stop the tide from flowing.”
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grandmasterashh · 26 days
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