Partners from across the North West Region of Europe (UK, Ireland, France, Belgium and the Netherlands) met today in Paris to kick off the EU-funded Interrreg project “Green WIN“. The meeting, hosted by Voies Navigables de France (VNF), set out the schedule for this new transnational project, which looks at the environmental efficiency of water management on inland waterways, with a particular focus on pumping operations and how they can be made more efficient… and greener. The project is also tabled as an action under the Navigating a Changing Climate initiative under the aegis of PIANC.
From left to right: Leo Klatter and Hajo Aldershof from Rijkswaterstaat, Perrrine Lavelle, VNF, Jemima Bruntlett and Chris Barnett, CRT, Paula Treacy, Waterways Ireland, Nigel Taylor (sitting) and Darren Parkinson, CRT, Cédric Girard, VNF Bourgogne, Stan Forier, VLM, Rudy Priem and Anthony Petitprez, VNF (standing) and Karel Stevens, VLM. (In VNF’s Paris offices, November 12, 2018)
IWI is supporting the project through its knowledge base and communications. Green WIN addresses excess energy use and high carbon emissions in waterway management across North West Europe. Waterway management organisations (WMOs) rely on pumping equipment and systems to keep waterways operational, but need to adapt and make their infrastructure more carbon-efficient. Cost pressures restrict WMOs from taking such steps. The project tackles this by jointly trialling technologies and more efficient ways of deploying them. Pumping water has a big carbon impact across NWE, accounting for 25-33% of annual electricity use by WMOs, and roughly 20% of total emissions.
The project brings together the Canal and River Trust
(lead partner), Waterways Ireland
, Ministerie van Infrastructuur en Waterstaat (Netherlands), Université de Liège (Hydraulics in Environmental and Civil Engineering), Voies Navigables de France and Vlaamse Landmaatschappij. The project covers a range of waterways, both large commercial waterways and smaller waterways for recreational uses.
An audit of the current situation will assess the scope for improvement and developing ways to maximise the effectiveness of equipment. The second phase involves piloting new technologies, trialling new equipment and assessing the potential for modifications to existing. The third phase involves convincing other WMOs to use the processes developed and adopt the greener technologies piloted (with new or adapted equipment). The estimated net change to be demonstrated is 778 000 kWh of energy saved, and CO2 emissions reduced by 195 tonnes.
The main outputs and pilots will be an infrastructure audit, technology trials, investment, procurement and business planning guidelines (a Greener Pumping Technologies Toolkit) and an established support network. Green WIN will roll these out to other WMOs by encouraging them to carry out new installations as their existing equipment reaches ‘end of life’. Environmental groups, industry and water managers’ networks will act as advocates, promoting the outputs of the project and helping reduce barriers to wider uptake/greater public awareness.
Long-term effects will be greater take up of greener technologies by WMOs outside the partnership, lower energy usage, reduced emissions and more WMOs involved in taking forward the technologies demonstrated in the project.
IWI is acting as an advocate for the project, helping the partners to achieve wider uptake and greater public awareness of the benefits that Green WIN can deliver. Involvement from SMEs and industry feature strongly in the project, while other stakeholders are universities, environmental groups and water management networks.
The Caen Hill flight of 29 locks on the Kennet and Avon Canal, where back-pumping was installed in the mid-1990s. © S. Bower
Back-pumping on English canals
The Trust will research improvements to back-pumping at four critical sites on the system. The Kennet & Avon Canal has back-pumping systems at Seend – 5 locks, a rising main about 1km long and a static head of 12.60 m, and pumps that tend to fail when overheating – and Devizes – the famous Caen Hill Flight of 29 locks with a rising main 3.7 km in length and a static head of 72.50 m. Proposed replacement of the two Flygt pumps will need to feature technology that increases efficiency over the unusually high level of output at such an ‘energy-hungry’ site. The other sites are the 3 locks at Calcutt on the Grand Union Canal, with a rising main of 450m and static head of 4.93m, and Gloucester Dock, where water is pumped from the River Severn through four Weir pumps that were designed to be between 79.5 and 81% efficient. The proposed replacement needs to feature technology increasing this efficiency to more than 90% and extend the service period from beyond its current 24 000 running hours or three years.
Back-pumping on Ireland’s canals
Waterways Ireland are looking at improved back-pumping systems at four locations. Richmond Harbour on the Royal Canal has an old pump delivering 225 l/s from the Cramlin River, and the 11.6 kW installation is only 75% efficient. The dedicated pump house will be re-engineered to host two pumps. The Grand Canal is supplied with water from the River Brosna into Shannon Harbour over locks 35-36. Here too, the pumps are old and affected by ongoing difficulties with weed, debris and blockages. An old 1994 pump delivers water from Lough Allen across Drumshanbo and Drumleague Locks to maintain water levels for navigation on the Lough Allen canal. The fourth pumping station is at locks 16-18 on the Grand Canal, where the pumps are relatively new but system controls need to be optimised; variable speed drives could improve efficiency.
‘High-consumption’ canals on VNF system
VNF pumps up to 1 m3/s from the river Saône over a static head of 10.75 m at Crissey lock on the Canal du Centre. Under the project, VNF aims to trial a dual pump system with higher performance, featuring improved starter engines and motors, also delivering greater efficiency through automation. The Stock pumping station at Diane-Cappelle pumps water into the Canal de la Sarre. It is one of the highest energy-use pumping stations operated by VNF, consuming around 370 MWh/year. The pumping station at Briare on the Canal de Briare supplies water from the Loire to the canal’s summit level and several reservoirs. The station was partially restored in 1995 and is one of the major pumping stations operated by VNF (6 motor pumps with of 720m3/h capacity, pumping 3-5 millions m3 of water per year). It has high energy consumption (around 750 MWh/year). Technologies proposed need to integrate pumping station automation and water flow and energy monitoring.
Broader system research
The University of Liège has the laboratory facilities and brings complementary academic expertise to the partnership, supported by the ‘sub-partner’ Service Public de Wallonie, Direction Générale Mobilité et Voies Hydrauliques. Green WIN partners will work in their laboratory to carry out the early stage testing of small-scale models or full-size versions of pumping equipment that will later be trialled in the pilots in Ireland, France and the UK. The laboratory can also host hydraulic modelling to test multiple scenarios on a ‘dummy’ waterway network (probably based on the network downstream of Liège). A second strand of the project looks at network optimisation and ‘Smarter Management’ techniques, standardisation of how WMOs measure CO2 emissions from equipment/technologies and if equipment featuring RE components can deliver CO2 reductions.
The Rhineland-Palatinate Environmental Authority in Germany is an associate partner. Like other partners, they represent national and regional interests, and operate across several sectors. Expertise in integrated water management, facilitating waterway freight transport and addressing environmental issues, and harmful effects to water systems are all needed in Green WIN. Another sub-partner is Trinity College Dublin, which will support WI with trials of Pumps as Turbines (PAT) technologies. The project will run through to May 2021.