A whistle stop tour with Archimedes!

Accompanied by Dave Mann and his crew from Mannpower Consulting Ltd., we set off on our whistle stop tour beginning with a visit to the IFAT show in Munich and continuing on to visit some Archimedes Screw installations in Munich, Czech Republic and The Netherlands.

IFAT show 2014
Photo Credit: IFAT 2014

IFAT 2014 is the world´s leading exhibition of innovation solutions for environmental technology. Climate change, rising raw material prices, an increasing number of mega-cities and advancing industrialization in emerging countries  boost the demand for products and services that address environmental and climate challenges. With growing pressures on European countries to reverse years of environmental damage and to find more integrated pollution control techniques, the potential is limitless.

IFAT 2014 exhibition
Frank at the IFAT 2014 exhibition

The various exhibitions covering water, sewage, waste and raw materials management showcased the latest water technologies from around the world which identified strategies and applications that will aid the reversal of the damage done to our environment. A total of 3,081 exhibitors from 59 countries attended the show making this the biggest show for the water sector.

hydro
Archimedes Screw in Phillippsthal

After the exhibition we set off to visit several of the Landy Archimedes Screw hydro installations and finished the tour with a visit to Landustrie the manufacturers of the Landy Archimedes screw based in The Netherlands.

hydro
Archimedes Screw in Phillippsthal

The Archimedean Screw has been used for pumping water for over 2000 years. Applying the principle in reverse, the same equipment now offers a new method for generating power from water, providing a fish friendly and highly efficient alternative to a conventional turbine. Each Archimedean Screw hydropower system is manufactured to be site-specific, with a choice of three designs depending on which is the most appropriate and cost-effective for each individual site.

hydro

hydro
Archimedes Screw in Hannoversch Münden
Archimedes Screw in Munich
Archimedes Screw in Munich

In comparison with most turbines the Archimedean hydropower screw makes use of an open construction and a low rotational speed. This results in a natural flow and there is no pressure build up in the entire installation. Furthermore extensive testing shows that due to the size of water chambers and the fact that there is no pressure difference fish will pass through unharmed. The Landy hydropower screw makes use of a specially designed inlet and outlet that make the screw absolutely fish friendly. The water outlet is designed in such a way for the water (and fish) to smoothly exit the screw without splashing. This also reduces the noise that water creates.

Artwork displayed at Landustrie by Friesian artist Ymke Meester
Artwork displayed at Landustrie by Friesian artist Ymke Meester

The artwork displayed in the hall of Landustrie by Friesian artist Ymke Meester was commissioned to celebrate the 100th anniversary of Landustrie. It is a triptych depicting an impression of a fictitious industrial environment in which the screw pump and waterpower are central.

Thanks to Landustrie for their hospitality during the IFAT 2014 exhibition
Thanks to Landustrie for their hospitality during the IFAT 2014 exhibition

If you are the owner of an old mill site or a potential hydro site or are a community group interested in developing a hydro project for community use please contact us.

We design, install and commission hydropower schemes in both Ireland and the UK.

 

New water wheel turns at Mapledurham watermill

On a previous visit to Mapledurham watermill to do maintenance work on the Archimedean Screw the new water wheel was in construction and it was hoped that it would be installed during the Summer. On our visit this week, and to to our surprise and delight the new water wheel made from locally sourced oak had been installed.

Original wheel installed in 1670
Original wheel installed in 1670

The watermill at Mapledurham is the last working corn and grist watermill on the River Thames and is still producing high-quality stone-ground flour today. The mill produces stone-ground flour using the water wheel that was installed when the mill was increased in size in the 1670’s.  Wholemeal and white flour, bran, semolina and Millers Mix, a blended combination bran and semolina, are all produced at the mill and can be bought locally.

Original working water installed in 1670
Original working water installed in 1670

Over the years some of the paddles of the existing original wheel were beginning to show their age so these paddles were replaced so as to extend the life of the water wheel and to allow it to continue to grind the flour.

The new oak waterwheel in construction ~ Photo Credit: www.mapledurhamwatermill.co.uk
The new oak waterwheel in construction ~ Photo Credit: www.mapledurhamwatermill.co.uk

The main reason for replacing the wheel was because of the appearance of a number of splits in the wheels framework and also many of the joints are showing signs of decay and movement.

New water wheel insitu
New water wheel installed April 2014

The new water wheel is the exact structural copy of the existing water wheel and is made out of oak which was sourced from the Mapledurham Estate.

New water wheel at Mapledurham
An exact replica of the wheel installed in 1670

Over the years some of the paddles of the existing original wheel were beginning to show their age so these paddles were replaced so as to extend the life of the waterwheel and to allow it to continue to grind the flour. These ‘replacement’ paddles will now be reused to replace the paddles as they become worn on the new wheel which I imagine won’t be for many years to come!

New water wheel at Mapledurham
New water wheel made from locally sourced oak

 If you’re interested in getting an existing water wheel refurbished or own the site of an old mill that has the possibility of reinstating a water wheel and would like more information please contact us here.

Lowna Mill goes ‘green’ and cuts carbon footprint with a giant water wheel!

Lowna  has been in the same family since as far back as 1790 as a farm, mill and a tannery. During the first World War it stopped being used as a tannery and  it reverted to its previous use as a small mill and hill farm where a large water wheel generated the electricity. In 2006 the owners decided to renovate the farmhouse at Lowna to bring it into the 21st Century!  Work was last carried out on the farmhouse in the early 60’s so as you can imagine it was in desperate need of modernisation as it was a lovely old but very cold house, and took a lot of energy to only partially heat it.

Photo Credit: Track to Lowna Mill-_geograph.org.uk_-_1522504
Track to Lowna Mill ~ Photo Credit: Gordon Hatton www.geograph.org.uk

The old water wheel was used to grind corn, drive machinery and move hides around – even generate its own electricity before the National Grid arrived in 1952. It had always been an ambition to replace the old water wheel which was in place for two hundred years, using  the old infrastructure already in place.

Site of the original waterwheel
Site of the original waterwheel with old infrastructure in place

With grant aid from the North York Moors National Park Sustainable Development Fund a new water wheel generating all the electricity for the farm, farmhouse and two cottages was installed. With an available head of 2m and a capacity of 305l/s the new water wheel was designed and installed by Mannpower Consulting Ltd specialists in hydropower turbines. With a diameter of 4400mm and a maximum output of 2.6kW the annual output is estimated to be 15,968kWh and an annual CO2 saving of 7 tonnes. Excess electricity is sold to the National grid. The water wheel generates the electricity for the two cottages and the farmhouse with excess being sold to the national grid.

Installing the waterwheel ~ Photo Credit: Mannpower Consulting Ltd
Installing the water wheel ~ Photo Credit: Mannpower Consulting Ltd

The  two barn-conversion holiday cottages had been renovated in previous years, with their heat retaining insulation and double glazing, the owners realised that the farm house had to be tackled from the bottom up! Local craftsmen were employed to carry out the work beginning with the demolition of an old extension to the rear of the dwelling. The old stone and a lot of the other existing original materials were reused within the building of the new structure.

New waterwheel installed in the site of the original waterwheel
New water wheel, generator and gearbox installed

Making the building as energy efficient as possible was a priority for the owners. Having spent years in the old structure with soaring energy bills they realised that now was the time to go as ‘green’ as they possibly could. All the new windows were double-glazed and a new plumbing system was installed using an efficient boiler and condensing water cylinder which used much smaller amounts of energy to retain and move hot water around. Dual-flushing toilets that use less water and a new electrical system and low-energy fittings were installed and energy-efficient A-rated electrical appliances were bought.

Both cottages and the farmhouse have had huge investment in energy saving insulation.  At least 60% of the lighting in the farmhouse uses low-energy bulbs and as lamps and fittings are replaced in the cottages they are being converted to low-energy alternatives. All products and services are sourced  locally and there is a policy of encouraging guests to use the local transport or walk and leave their car behind, energy efficiency, recycling and reusing is implemented wherever possible.

Farndale wild Daffodils, Kirkbymoorside ~ Photo Credit:  Rogeruk ©
Farndale wild Daffodils, Kirkbymoorside ~ Photo Credit: Rogeruk ©

Visitors are encouraged to walk and enjoy the fabulous daffodil walk at Farndale. The beautiful valley of Farndale lies at the heart of the North York Moors. Each spring, its glorious daffodils put on one of nature’s most spectacular shows – a dazzling display of colour that carpets the meadows and river banks along a seven-mile stretch of the River Dove.  The petite wild daffodil (Narcissus pseudonarcissus) is one of the native plants and is protected within the Farndale Local Nature Reserve, established in 1955 to safeguard the valley’s famous flowers.

Lowna Mill

Are you the owner of an old mill or mill site that had or still has an existing water wheel? Would you like to generate your own electricity and live a more sustainable lifestyle? Why wait any longer, contact us today and we’ll help you on the road to a ‘green’ future.

 

Mapledurham Watermill ~ the last working cornmill on the Thames.

Over the last couple of weeks Frank has been in the UK commissioning various hydropower schemes around the country. During this time he also carried out some maintenance work on the Archimedean Screw Hydro Turbine which was recently installed  at the award winning Mapledurham watermill to generate clean green elcetricity which is being sold to the national grid. The watermill is the last working corn and grist watermill on the River Thames and is still producing high-quality stone-ground flour today.

Mapledurham
Mapledurham Watermill with working waterwheel and Archimedean Screw

A mill was already situated at Mapledurham at the time of the Domesday Survey. The central section of the current mill building dates back to the 15th century. Originally the mill had a single water wheel, on the river side of the building. The mill was increased in size in the 1670s, and a leat was constructed to drive a second water wheel on the village side. It is this second wheel which is still in use today. At its busiest it employed five people, and the miller was prosperous enough to rent the finest house in the village street.

Mapledurham Watermill - last working watermill

In 1690 the mill was leased to James Web for the sum of £60 per year. Around 1700 he expanded the mill again, to allow him to install the equipment to produce the refined flour that was becoming popular. His son Daniel Webb took over from him in 1726 at a rent of £100. Thomas Atrum took over the mill at a rent of £150 p.a. in 1747, which was raised to £205 in 1776. In 1777 a barn was added on the mill island, and a wharf built to allow the mill to supply flour to the London market by barge. However by 1784 Thomas Atrum was bankrupt.

Mapledurham watermill

Mapledurham WatermillThe mill continued to flourish, and as late as 1823 plans were drawn up to rebuild the mill in classical style. The advent of cheap imported flour from North America damaged the mill’s prosperity, but it remained in use until just after the Second World War. It was restored and brought back into use in 1980.

Waterwheel
Original Waterwheel at Mapledurham watermill built in 1670
Built in 1670 the waterwheel at Mapledurham watermill still grinds flour today

Over the years some of the paddles of the existing original wheel were beginning to show their age so these paddles were replaced so as to extend the life of the waterwheel and to allow it to continue to grind the flour. A new waterwheel is currently under construction and it is hoped that it will be installed during the Summer. The main reason for replacing the wheel is the appearance of a number of splits in the wheels framework and also many of the joints are showing signs of decay and movement. The wheel will be as exact structural copy of the existing one and will be made out of oak which has been sourced from the Mapledurham Estate.

The new oak waterwheel in construction ~ Photo Credit: www.mapledurhamwatermill.co.uk
The new oak waterwheel in construction ~ Photo Credit: www.mapledurhamwatermill.co.uk

An Archimedean Screw hydro turbine was designed and installed in 2011 to replace the original turbine that had fallen into disrepair.   The 7.27 m Open Compact Archimedean Screw has a capacity of 5,000l/s and a predicted output of 99.95kW. It is estimated that it will save 221 tonnes of CO2 per annum. Over the course of a year, the screw will produce approximately 500,000kWh of renewable electricity which is being bought by Marks and Spencer via the national grid. The electricity generated is sufficient to power one of its stores.

Archimedean Screw
Archimedean Screw

The mill produces stone-ground flour using a waterwheel. Wholemeal and white flour, bran, semolina and Millers Mix, a blended combination bran and semolina, are all produced at the mill. The Mapledurham estate also produces milk for Marks and Spencer. When the sale of the electricity has covered the cost of the turbine, the profits will go towards renovating the mill and its outbuildings to how it was 200 years ago.

Mapledurham Watermill
Parts of the original machinery from the watermill

On our return visit to the watermill this week we were delighted and surprised to see that the new wheel had been installed.

The mill is located in the grounds of Mapledurham House, and like the house is open to visitors on weekends and bank holiday afternoons from April to September. The water mill is normally working on opening days, and visitors can visit both main floors of the mill, and see  its operation.

The watermill is perhaps best known for its starring role in the 1976 film, The Eagle Has Landed, where the mill leat is the scene of the dramatic rescue of a local girl by a German paratrooper that results in the unmasking and ultimate failure of the raid. It is also the backdrop in the image on the cover of Black Sabbath (album), by the band of the same name.

 If you’re interested in getting an existing water wheel refurbished or own the site of an old mill that has the possibility of reinstating a water wheel and would like more information please contact us here.

 

 

Archimedes arrives at Osney Lock!

Osney Lock Hydro is the first community-owned hydro scheme to be built on the Thames.

Constructing a community-owned hydro scheme at Osney Lock has been a dream for local residents for over thirteen years. It started in 2001 with a survey of  Osney Island residents that revealed a shared concern about climate change and a desire to harness the power of the river that ran around the island to generate green electricity. A small island next to Osney Lock was identified as the best site for the hydro scheme. The island is owned by the Environment Agency so they were approached about the possibility of leasing the site. It was discovered that work was to begin on the weir in 2013 so the pressure was on for the residents to draw up plans for the Archimedean Screw and secure planning permission and then most importantly secure funding for the project.

Construction work prior to installation
Construction work prior to installation

There was extraordinary support shown by local people towards the project. The Osney Lock Hydro share offer raised over £500,000 in just four weeks. Without this swift and significant support the project would not have been able to go ahead. Over 40% of the investment came from within a mile of the project and 4 out of 5 investors live in Oxfordshire.

Osney Lock hydro installation
Lifting the 4.35m Archimedean Screw into place

osney lock hydro installation

On Tuesday 25th March at midday the dreams of the local residents came to life when a 4.35m-long, four-bladed Archimedean screw was installed at Osney Lock – the final construction phase of the Osney Lock Hydro scheme. The screw was designed by Mann Power Consulting Limited in the UK and manufactured in the Netherlands by Landustrie. Once operational, the 49kW variable speed Archimedean Screw turbine  will harness the power of the river to generate approximately 179,000kWh of green electricity per year.  When the scheme is completed it will generate enough electricity equivalent to that used to power around 60 houses. It will also generate an income of over £2 million over the lifespan of the project for the community to use for further environmental projects in the community.

Osney lock hydro installation
The four bladed Archimedean Screw being guided into position ~ Photo Credit: Andrew Watson

Over the coming weeks the power house will be constructed and then the gearbox and generator added. Once the Archimedean Screw is commissioned it will generate clean green elcetricity for the Osney Lock community – a long awaited dream that came to life 🙂

Update: Gear box and generator connected.

Gearbox and generator connected
Gearbox and generator connected
Medieval Water Mills in Ireland

A  presentation on Medieval Water Mills in Ireland will take place on Monday 10th March at 7.30pm at Engineers Ireland, 22 Clyde Road, Dublin 4.

This is a free event hosted by the Heritage Society, in association with the Civil division and the Local Government division.

Old Mill and Mill Wheel

Ireland currently has the largest corpus of pre-10th century water-mill sites (both horizontal and vertical-wheeled) in the world. These provide vital insights into the development of water-powered prime movers elsewhere in Europe, where sites of similar date are generally rare. Indeed, while the precursors of the modern reaction turbine can be found in late Roman Tunisia, the earliest excavated examples of horizontal water wheels with dished or scooped paddles (as found in Pelton wheels) have been excavated in Ireland.

Using recent archaeological evidence from Ireland, this talk will seek to re-evaluate the relationship between mills employing horizontal and vertical water-wheels, and will challenge the notion that vertical wheeled grain mills were necessarily more efficient and productive than mills with horizontal waterwheels.

Water wheel

Dr Colin Rynne BA PhD – Senior Lecturer at UCC’s Archaeology Department.

Dr Rynne has widely published on water power in medieval Ireland and Europe and on the post-medieval and industrial archaeology of Ireland.  His research interests include medieval agriculture, medieval and post-medieval iron working in Ireland and Irish industrial archaeology.  Current research interests include a study of the 17th-century colonial landscapes created in south east Munster by Richard Boyle, 1st Earl of Cork.  He is also completing a major publication on the archaeology of waterpower in early medieval Ireland and Europe, c. AD 600-1100.

Medieval Water Mill excavated at Kilbegley, Co. Roscommon.

One of the best preserved early Medieval Water Mills in Europe was excavated in Kilbegley, Co. Roscommon in 2007. The  beautifully preserved horizontal watermill dates back to between 650–850 AD. During the excavation the remains of the whole lower floor of the mill, with its flume (the chute that carries the water), undercroft, wheel-hub, paddles and a number of other features largely intact were discovered. Artefacts that tell us about the lives of the monks and millers, like ringed-pins, bracelet fragments and leather were also found.

The excavation revealed that the millwrights and monks had an incredibly sophisticated and talented ability to survey and understand hydrological techniques, as the water from the mill came from small springs and local ground water rather than a river.

All of the structural timbers from the mill have been preserved and are currently stored with the National Museum of Ireland until a suitable location to house and display them can be found close to the place they were discovered.

Kilbegley Medieval Water Mill ~ Photo Credit Neil Jackman author of 'The Mill at Kilbegley'
Kilbegley Medieval Water Mill ~ Photo Credit Neil Jackman author of ‘The Mill at Kilbegley’

A book on the excavation ‘The Mill at Kilbegley’  authored by Neil Jackman with Caitríona Moore and Colin Rynne and edited by Tadhg O’Keefe is now available.

You can also hear the story of the mill, and all the other fascinating archaeological sites discovered in advance of the construction of the M6 by downloading the FREE audioguide – The M6 A Route Through Time.

Thank you to Neil Jackman who very kindly allowed me to include the information and photo of the excavation of Kilbegley Medieval Water Mill.

Hydropower installation and restoration of Penllergare Valley Woods

Located on the northern fringe of Swansea, Penllergare Valley Woods was once a famous gentry estate and home to John Dillwyn Llewelyn, the notable 19-century horticulturalist, philanthropist and pioneering photographer. It is Llewelyn’s design, vision and influence behind the picturesque and romantic landscapes of the park.

Hydropower installation and restoration of Penllergare Valley Woods
Photo credit ~ One Historic Garden ~ Penllergare Valley Woods

For almost half a century Penllergare Valley Woods was neglected, vandalised and threatened by development and so the Penllergare Trust was formed in 2000 as an independent charity with the aim of restoring and regenerating the Grade II listed Penllergare Valley Woods to its former stunning glory. The leases of Valley Woods were finally assigned to the Trust on 26th April 2012, effectively securing them for public benefit until 2116 – that’s 104 years! This in turn initiated the award of £2.4m by the Heritage Lottery Fund through it’s Parks for People Programme to support the first phase of an ambitious £2.9m restoration scheme focussed on the upper end of the valley.

Hydropower installation and restoration of Penllergare Valley Woods
Manmade waterfall at Penllergare Valley Woods

It’s a place where you can enjoy the sound of birds, delight in the profusion of wild flowers, discover evidence of exotic plantings and uncover for yourself the hidden features of a grand design. Wildlife research carried out by Swansea Council has found the estate is very significant for amphibians and acts as a “corridor” for animals to thrive and move about.

Hydropower installation and restoration of Penllergare Valley Woods
Photo Credit ~ One Historic Garden ~ Woodland walkway at Penllergare Valley Woods

The restoration of Penllergare Valley Woods will provide an essential green space to relax, explore and have fun in as well as creating jobs and providing training opportunities for local people. The involvement of local volunteers was vital to the success of this project and it’s fantastic to see so many people  involved, learning new skills and playing their part in taking the local  heritage into the future.

Hydropower installation and restoration of Penllergare Valley Woods
The arrival on site of the 30kW closed compact Archimedean Screw – Photo ~ Philip James

As part of the upgrade and restoration of Penllergare Valley Woods a 30kW Archimedean Screw Hydro Turbine was installed to ensure a sustainable future for Penllergare Valley.

Hydropower installation and restoration of Penllergare Valley Woods
Lifting the Archimedean Screw into position

The development of the hydropower scheme in Penllergare Valley Woods will generate sufficient power to meet the needs of the sites new visitor centre and excess sold to the National Grid, raising an expected £10,000 per year for the trust.

Hydropower installation and restoration of Penllergare Valley Woods
Lowering the Archimedean Screw into position

The Archimedean Screw with a length of 11m and a capacity of 2880 m3/h is situated next to the waterfall at Penllergare Valley Woods. The hydropower scheme was designed by Mannpower Consulting Ltd and the Archimedean Screw was manufactured by Dutch company Landustrie.

Hydropower installation and restoration of Penllergare Valley Woods
The Archimedean Screw insitu beside the waterfall

The enclosed compact design was the preferred design of screw for this particular site as the design minimises the installation cost and doesn’t intrude on the existing landscape.

Archimedean Screw with ell pass running along side
Archimedean Screw with eel pass running along side

The Archimedean Screw is placed into the bank side and sits at an angle that roughly matches the existing natural profile of the ground.  Three clear panels along the length of the screw will enable the functioning of the screw to be monitored and the workings demonstrated. It could therefore be used to educate the public about hydro electricity and alternative energy sources. Once in-situ most surrounding areas will be dressed with soil and stone and this will enable it to blend in with the surrounding area.

Decorative stone arches containing drain down pipes for the lake
Decorative stone arches containing drain down pipes for the lake

Decorative stonework on the interior of the arches
Decorative stonework on the interior of the arches

We are heading over to begin the commissioning of the scheme at the beginning of February. Since our arrival on site the newly built Llewelyn Bridge has been opened to the public.

Photo Credit ~ Penllergare Valley Trust ~ The newly built Llewelyn Bridge
Photo Credit ~ Penllergare Valley Trust ~ The newly built Llewelyn Bridge

On the 9th April the Penllergare Valley Woods Archimedean screw hydro generator was commissioned and handed over to the Penllergare Trust. Initially, the electricity generated will feed the coffee shop, woodland centre and the office cabin by the car park, thus reducing significantly the running costs. The Trust are negotiating with Ofgem and their electricity provider to buy surplus electricity from them by feeding it in to the National Grid. All of the income derived from this will be ploughed back into running and maintaining Penllergare Valley Woods for everyone to enjoy.

The site of the Archimedean Screw installation and lake
The site of the Archimedean Screw installation and lake

The commissioning of the Archimedean Screw was based on the partially de-silted lake configuration. It will need to be adjusted once the lake works have been completed later in the Summer. In the meantime the Trust plan to move soil, place stones and later, plant trees and shrubs around the works to better integrate it all into the landscape. Once this work has been completed, the area around the turbine will be open for people to take a look and to see the screw turning through the specially designed viewing panels in the top of the screw housing.

Generating clean green electricity
Generating clean green electricity

If you are the owner of a potential hydro site or are a community group interested in developing a hydro project for community use please contact us. We design, install and commission hydropower schemes in Ireland and the UK.

Hydropower generation at Brett’s Sion Mill on the river Nore

Bretts Mill on the River Nore, dates back to the 14th Century. The mill has been in the Brett family since the 1800s and the present owner John is carrying on a proud tradition, except that his operation, making the finest native Irish hardwood flooring, uses hydroelectric and biomass energy on-site, with surplus exported to the national grid. The clean production of electricity at Brett’s saves approximately 5,000 tonnes of Carbon Dioxide (CO2) annually.

Bretts Sion Mills
The hydro turbine generating clean green energy

The undershot mill wheel, the oldest one of its type continually in use in Ireland  is a satisfactory solution to low-head hydropower in terms of construction, reliability and ease of maintenance. In addition, it is benign to fish movements and provides excellent aeration which is necessary for life in the river.  The paddles of the waterwheel are flat and are simply dragged round by the flowing water.

Bretts Sion Mills
Undershot waterwheel one of the oldest in continuous use in Ireland

By 1850, Ireland had around 6,400 watermills, according to the EU-funded SPLASH (Spatial Plans and Local Arrangement for Small Hydro) report. Nearly all of the old watermills have long since fallen into disuse, but the potential they represent is still there. Cost is a factor, but the report emphasises that small scale hydro schemes are a secure and reliable form of energy that should be used as part of the drive to promote renewable energy.

Old mill sites are ideal sites for hydropower because  in most cases the original structures are still insitu which in turn cuts down on the cost of civil work which greatly reduces the cost of a new install. The Irish Hydropower Association estimates, for example, that up to 600 old mill sites around the country could be redeveloped into hydropower generation sites.

Bretts Sion Mills
Kilkenny hurley on display

On the day we visited the mill John discovered that we were from Wexford and took great pride in showing us the gigantic hurley he had on display in one of his many workshops.  He makes the hurleys for the Kilkenny team and in his words “this is why they are winners” !! 🙂

Hydropower ~ Generation of renewable energy

Due to the global warming and the increase of both global power consumption and oil prices, generation of renewable and environmental energy is being promoted and subsidized worldwide. There are many forms of harvesting eco friendly and renewable sources, with hydropower being its most mature and largest source of renewable power. The power plants simply convert the energy from flowing water into electricity, in most cases using a dam/weir on a river to retain a large reservoir of water. This water is then released trough turbines in order to generate electricity. Hydropower plants produce no air emissions but in most cases affect the water quality, wildlife habitats and especially prevent the fish migration.

However the highly efficient Archimedean screw has been “re-invented” to generate electricity all year round at 24 hours per day, whilst obtaining the natural flow of the river, in combination with its natural fish friendliness and a small fish trap it is one of the few systems that is able to maintain or even improve the wildlife in and around the river.

Overview of an Archimedean Screw ~ Photo Credit: Landustrie
Overview of an Archimedean Screw ~ Photo Credit: Landustrie

A hydropower screw is a profitable source of income and entirely environmental friendly, once you possess the water rights of a flow. The  hydropower screw can be used in places or areas where there is a low head ≤10 meters and a flow of ≤15m³/s

Examples of the types of sites suitable for the installation of an Archimedean Screw:

  • Rivers
  • In an existing spillway, lock or in a weir system
  • To replace existing waterwheels or other types of generators
  • Old Mill sites
  • (Waste) Water treatment inlets / outlets
  • Cooling water outlets of power stations
  • Industrial process water (i.e. Paper industries or steel mills)
  • Anywhere where water is available at a higher level

If you own any of the above site types and would like to find out more about how the Archimedean Screw Hydro Turbine can be of benefit to you please contact us here and we will endeavour to point you in the right direction.

We offer a friendly one-stop shop for hydro development, from feasibility studies to licensing, to installation and commissioning and everything in between!
The beautifully restored and visually breathtaking Riverdale Water Mill

During the Summer we spent some time visiting various water mills around Ireland with The Mills and Millers of  Ireland – the society for the preservation of ancient and traditional Irish water mills. We have visited several mills over the years and Riverdale Water Mill has to be one of the most breathtaking of all the renovated mills we have visited to date.

Situated close to the shores of Lough Neagh on the River Goudy the beautifully restored Riverdale Water Mill is over 200 years old. All its original machinery, including the water wheel itself, is in full working order. Visually breathtaking, Riverdale surpasses all expectations.

Restaurant and Courtyard
Restaurant and Courtyard
The magnificent Water wheel
The magnificent Water wheel
The working water wheel
The working water wheel

 

The Millrace
The Millrace

The millrace on the right converges with the River Goudy as it leaves the mill pond.

View of barn and sluice gate
View of barn and sluice gate
The Sluice Gate
The Sluice Gate

The exquisitely landscaped grounds are stunning and full of delightful surprises at every turn. Riverdale Dam is truly a world unto itself , an ideal location for photographs throughout the year.

Stepping stones along the dam
Stepping stones along the dam
The Goudy river waterfall
The Goudy river waterfall
The Elevated pond
The Elevated pond
View of Mill and Mill pond
View of Mill and Mill pond
Enjoying life on the pond
Enjoying life on the pond
The pathways through the beautifully landscaped gardens
The pathways through the beautifully landscaped gardens
A haven for wildlife
A haven for wildlife

Across the road in the gardens of Riverdale House there is a stone and brick built shower house which was used by the workers at Riverdale Water Mill.  After a long day of  threshing the mill workers would step into the shower and once inside another worker would throw a bucket of water on them from the top of the building.

Frank inspecting the shower
Frank inspecting the shower

The fully restored farmyard which includes both a restaurant and a barn can accommodate functions such as local heritage events and weddings.

If you are the owner of an old mill or indeed a mill site and would like to find out more please contact us here for further information and we will endevour to point you in the right direction.

All photographs are copyright of Eco Evolution