Mills and Millers Ireland ~ AGM and Autumn Event

The Society of Mills and Millers of Ireland was launched in 2001 to encourage and assist in the preservation and appreciation of mills as part of our industrial, architectural and landscape heritage. There are hundreds of mills and mill sites spread across the country and while many are beautifully refurbished or put to good use, there are also many others which could be restored or renovated while preserving their traditional context. The society aims to promote interest and awareness in this aspect of Ireland’s industrial heritage by building up knowledge and expertise in areas such as law, architecture, renewable energy and manufacturing and making information available through publications, lectures and events.

Mills & Millers of Ireland will hold their AGM on Saturday 8th October 2011 at 11.00am in the Glenavon House Hotel, Drum Road, Cookstown, Co Tyrone.

Tel: (048) or (028) 86764949. Registration tea, coffee from 10.30am.

At 12.00 noon following the AGM  Mr Norman Kerr will give a presentation on linen processes. At 2.30pm following lunch in the hotel a guided tour of Wellbrook Beetling Mill, the last working water-powered linen beetling mill  has been organised.

Following the tour a visit to the restored Gleshygolgan Flax Mill, Plumbridge  incorporating a hydro electric scheme has also been organised.

Fee for the day €25 – if AGM only, no charge.

Booking details can be found on Mills and Millers of Ireland website.

Romney Weir is turning the screw on CO2

Romney weir is turning the screw on CO2. Two Archimedean Screw hydro turbines, rated at 150kW each and designed by Mann Power Consulting Ltd., are to be installed on the weir to generate clean, green electricity that will be used locally.  With a total capacity of 300kW this will be one of the largest Archimedean Screw hydro schemes installed to date in the UK and Ireland. The largest single screw was recently installed at Shane’s Castle in Northern Ireland, rated at 214kW it is the largest ever manufactured Archimedean Screw hydro generator and was designed and supplied by Mann Power .

Romney Weir ‘A’ is in Windsor. The weir was built in the 1790’s and is used to control water levels between Old Windsor lock and Boveney lock. The Romney Weir hydro scheme will utilise just two of the ten existing weir bays and have little effect on current weir operations. Weirs were originally built to control water levels for navigation and flood risk purposes but can now take advantage of new technology to provide energy.

Romney Weir

To help ensure the £1.7million project both generates clean energy and improves the local environment the old Denil type fish pass will be replaced with a Larinier style fish pass which will enable over 12 species of fish including trout and perch, as well as endangered eels, to migrate up this stretch of river,  some for the first time in over 200 years.

The scheme will be fitted with a number of environmental protection measures including rubber bumpers on the turbine blades to minimise risk to fish.

A  four metre flood gate will also be linked to the scheme and will open automatically when river levels are high to ensure there is no increased risk from flooding

Pile driving completed at Romney Weir

The project, which was granted planning permission in August 2008, will consist of two four meter diameter Archimedes screw type turbines occupying two bays in the Romney Weir and will generate 300 kilowatts per hour at peak times, enough to power  600 households. It is estimated the turbines will reduce carbon dioxide emissions by 790,000 kilos per year. This clean, green electricity will be used to power Windsor Castle.

The two 150kW turbines at the Landustrie factory

Mann Power Consulting Ltd., the UK based Archimedean Screw specialists designed the equipment for the Romney Weir project.  After various consultations it was decided that the most suitable turbine for the site was an Archimedean Screw Hydro Turbine which was manufactured by Landustrie based in Holland. The Landy screws are four meters in diameter, 6 meters long and each has the capacity of 150 kW. A unique feature of each screw is the number of blades or helices; here being 5 instead of usually 2 or 3. This is the first five bladed Archimedes Screw Hydro Turbine to be installed in the world to date.

Dave Mann visiting Landustrie in Holland

 

The turbines on route to Romney

The two 150kW Archimedean Screw turbines arrived on site in the early hours of Wednesday morning 7th September 2011.

The two turbines in the compound awaiting installation

 

Turbine floating to the weir on a pontoon

Installing the Archimedean Screws

The two Archimedean Screws installed on Romney Weir

The golden brown colour of the turbines and their housings were chosen by the residents of Eton, who look out onto the weir.

The turbines in-situ at Romney Weir

Sluice gates and Larinier Fish Pass

Four Hydraulic Rams have been installed to automatically move and adjust the two 94 tonne turbines as the river level changes.

Hydraulic ram being craned into place

 

The two hydraulic rams in-situ

 

Commissioning of the scheme is expected to take place in the coming weeks.

 

The fish-friendly Archimedean Screw hydro turbine.

 The Archimedean Screw turbine provides a fish-friendly alternative to conventional turbines, ideally suited to low-head (1m-10m) sites, and sites with fish protection issues. Extensive fish passage tests have conclusively demonstrated that the large water chambers and slow rotation of the Archimedean Screw allow fish of all sizes, and debris, safe passage through the turbine. As a result, the Environment Agency has agreed that no screening is required. Literally thousands of fish passages have been monitored and recorded using underwater cameras at the intake, inside the chamber of the Screw itself and at the outflow to assess the effect of the Screw on salmonids (including smolts and kelts), brown trout and eels. The trials looked at fish passage across a broad spectrum of sizes and turbine speeds, possibly the most impressive of which was the safe passage of a kelt measuring 98cm in length and weighing 7.6kg. In addition, behavioural and migrational patterns across the species have been shown to be entirely unaffected by the turbine.

Dave Mann commissioned the fish passage studies instrumental in persuading the Environment Agency to accept the technology. Mann Power have a proven track record of successful installation throughout the UK and Ireland. One of the first challenges presented to Mann Power when Dave Mann set up the consultancy firm in 2003 was to find a hydropower solution for a community project in North Yorkshire, situated in a low head site within a Site of Special Scientific Interest with particular stipulations for the protection of an endangered fish species. The result of extensive research into possible solutions culminated in the introduction of the Archimedean Screw turbine – already widely used in continental Europe – for the first time into the UK, and Mann Power have been at the forefront of supplying this equipment for hydro generation projects since 2004. Mann Power now supplies this equipment throughout the UK and Ireland, as well as providing expert consultancy services.

Dave Mann, a member of the British Hydropower Association Council, has been instrumental in the design, installation and commissioning of all but a few of all Archimedean screw power generation sites in the UK and Ireland to date with over twenty schemes fully operational and a further forty or so at various stages of development. Mann Power have commissioned several independent studies to verify the Archimedean Screw’s fish-friendly credentials and also its efficiency. Mann Power is established within the national hydropower industry as a leader in the field of designing bespoke hydro-generation installations, specialising in low head and ‘difficult’ sites which previously may have been considered unsuitable for such applications.

Eco Evolution work in colaboration with Mann Power Consulting on hydro sites throughout the island of Ireland and the UK.

We also design modern water wheels for electricity generation.

 

All photographs copyright of Mann Power Consulting and Eco Evolution.

 

 

 

 

 

 

Fish-friendly Hydro for Omagh – Part I

Omagh District Council has recently commenced work on a hydro project utilising the weir on the Camowen River, adjacent to Omagh Leisure Complex, to generate electricity through an Archimedean Screw hydro turbine. The hydro scheme uses the same intake point that was used to feed the headrace to Scott’s Mills that started operations about 1850 in the town.The development of the hydro scheme on the Camowen River will generate sufficient power to meet the needs of Omagh Leisure Complex with excess electricity sold back to the national grid.

Rated at 121 kilowatts the hydro turbine is predicted to save in excess of 133 tonnes of Carbon Dioxide (CO2) annually and will make a major contribution to the Council’s green philosophy. This project will complement the Council’s initiatives to develop ‘green’ energy from renewable sources, including the installation of a biomass boiler at Omagh Leisure Complex. The revenue generated by the electricity from the hydro scheme will be contributed to a sustainability fund, which would become a resource to support other sustainability projects in the district.

Omagh Leisure Complex is amongst the most modern leisure facilities having almost doubled in size from its opening in 1982 with further expansion planned. Set in 26 acres of landscaped grounds the complex caters for everyone from the casual swimmer to the serious athlete.

This project to develop a hydro turbine on the Camowen River will create a very valuable resource for renewable energy, with many benefits being re-invested to the community and providing a valuable educational resource for Omagh. Not only will the provision of this renewable energy help protect the environment, but it will also contribute to achieving the Council’s target for energy consumption from renewable sources.

Site on the Camowen river prior to works commencing
Bank cleared in readiness for construction of the hydro scheme

With flood protection in place ground works begin

The Council is very conscious of the importance of the Camowen River as a fishery, and of the concerns of anglers. After various consultations it was decided that the most suitable turbine for the site was an Archimedean Screw.
The Archimedean Screw turbine provides a fish-friendly alternative to conventional turbines, ideally suited to low-head (1m-10m) sites, and sites with fish protection issues. Extensive fish passage tests have conclusively demonstrated that the large water chambers and slow rotation of the Archimedean Screw allow fish of all sizes, and debris, safe passage through the turbine. As a result, the Environment Agency has agreed that no screening is required.
Literally thousands of fish passages have been monitored and recorded using underwater cameras at the intake, inside the chamber of the Screw itself and at the outflow to assess the effect of the Screw on salmonids (including smolts and kelts), brown trout and eels. The trials looked at fish passage across a broad spectrum of sizes and turbine speeds, possibly the most impressive of which was the safe passage of a kelt measuring 98cm in length and weighing 7.6kg. In addition, behavioural and migrational patterns across the species have been shown to be entirely unaffected by the turbine.

Pile driving and deep excavation for the intake channel

Foundations laid

Reinforced concrete works at power house location

Pre-cast culvert units aligned to form part of the intake channel
Sluice gate installed
The power house and intake channel have now been constructed.

Construction of the Intake Channel

Intake channel leading to the power house

 

Power house and sluice gate

Larinier fish pass to improve fish passage at site

Dual flight Larinier Fish Pass with resting pool installed alongside screw location

This Hydro project is the second of only two Archimedean Screw Hydro projects to date in Northern Ireland. Mann Power Consulting and Eco Evolution are installing both turbines. Mann Power Consulting based in Yorkshire are the pioneers of the Archimedean Screw in the UK and Ireland and Eco Evolution based in Co. Wexford are their authorised representative for the whole of Ireland.

Mann Power Consulting and Eco Evolution are the Archimedean Screw generating specialists in the UK and Ireland. Mann Power Managing Director, Dave Mann, brought the Archimedean screw as a generating turbine into the UK for the first time in 2004. Dave commissioned the fish passage studies instrumental in persuading the Environment Agency to accept the technology. Mann Power have a proven track record of successful installation throughout the UK and Ireland and their services are split into five distinct stages allowing clients complete flexibility to decide their own project timescale. They offer a fully integrated 3-D design and build capability and they are the sole distributors of Rehart Archimedean screws in the UK and Ireland.

The first ever Archimedean Screw generator in Northern Ireland was only recently installed at Shane’s Castle in Antrim. Rated at 214 kilowatts this is the largest single Archimedean Screw generator ever manufactured. Eco Evolution and Mann Power recently installed the massive Rehart manufactured machine at Shane’s Castle. It is expected that the scheme will be commissioned shortly and it will then be fully operational.

The predicted annual output is a massive 1,125,000 kilowatt-hours. To put this in perspective, an average household uses less than 5,000 kilowatt-hours per year, so this hydro scheme has the potential to power more than 225 houses. This scheme will also save an impressive 484 tonnes or more of Carbon Dioxide (CO2) emissions by generating clean, green electricity.

Eco Evolution are also currently working on a smaller 20 kilowatt private scheme in Co. Antrim that is at the early stages of development. This scheme will provide power to a farm with excess electricity sold back to the national grid.

Incentive payments in way of Northern Ireland Renewable Obligation Certificates (NIROCs) are available for renewable generators including hydro. NIROCs are available for the electricity generated by the hydro turbine, this electricity can then be used on site with the excess exported to the national grid. There is an Export Tariff available for any excess electricity that is exported to the national grid.

The Eco Evolution professional team offers a friendly one-stop shop for hydro development, from feasibility studies to licensing, to installation and commissioning and everything in between.

Eco Evolution are also currently seeking suitable investment sites for hydro development around the country. Leases on suitable sites with potential in excess of 50 kilowatts would be considered.

All photographs copyright of Eco Evolution.

Fish-friendly Hydro for Omagh – Part II

The installation of the Archimedean Screw.