1. Publishable summary

Transcription

1 1. Publishable summary Summary description of project context and objectives: BB GREEN represents research to develop next generation fast and efficient commuter ferries for operation in sheltered waters. Whereas current State of the Art conventional ferries use conventional all wet hull forms (catamarans and monohulls), BB GREEN will utilize air supported vessel (ASV) technology. With ASV hulls up to 85% of the fully laden displacement will be supported on one or more cushions of pressurized air. By means of a lift fan system, a cavity of air is developed underneath the hull, separating most of the normally wetted surface areas from water contact; and reducing overall hull/water resistance significantly. A battery electric driveline taking power from sustainable energy sources, stored in a newly developed battery pack, will replace diesel engines used on fast ferries today. Overall project objective is to develop an energy efficient, low wake wash ferry, offering 30 knots + performance, with Zero emissions (CO2 /NOX/particles) to water and air. Secondary spin off solutions, for further extending the market potential of the new concept, will be similar vessels with either low emission diesel engines and/or diesel/electric hybrid drivelines. Although several sub-goals related to critical single factors have been set, the overall goal, proving feasibility of the proposed innovative new transport solution, will prevail. BB GREEN is a 3 year, market driven venture, where dissemination and exploitation of the results and achievements will be given the highest priority. Work performed since the beginning of the project and main results achieved: Year 1: Assessment of market requirements, including identifying and studying suitable routes and operations, have been main start up task, headed by Dutch ferry operator Aqualiner. A high number of applications, all over Europe have been identified, both as current single routes and route networks, and as potential new operation with the proposed technology. In parallel project initiator and coordinator, SES Europe AS, Norway, with input from all partners have performed a first assessment of possibly critical factors related to the concept as such, the proposed new hull form, the battery electric drive line, and operational issues. In overall the first assessment concluded favourably; although some concerns, mainly related to practical day to day operation and safety were raised. The proposed radical propulsion system, large diameter surface piercing propellers could be a complicating factor; but adequate replacements have been proposed, reducing overall risk and boosting probability of a commercial success. The ASV technology, the IPR of Effect Ships International AS (ESI), was proposed due to a combination of favourable features; including low resistance, high load carrying capability

2 and presumed low wake wash. Although for different applications, ESI has already successfully tested both ASV catamarans and ASV mono hulls. To make the most suitable selection various mono- and cat versions have been designed and evaluated by SES Europe and SSPA Sweden, ending up with two final candidate hull forms, one of each set up. Next phase during the first project year has been final design development of the two candidate hull forms, leading to construction and outfitting of two tank testing models. Due to the higher number of test parameters, where the lift fan system and air cushion enclosure arrangement are vital parts, testing ASV models are much more complex than testing conventional hulls. SSPA Sweden has for more than a decade worked closely with Effect Ships / SES Europe on testing and optimization of ASV technology. To date more than fully instrumented runs have been carried out in the facilities in Gothenburg, Sweden. The tank testing of two models as a matter of fact superseded expectations. The ASV cat was significantly better than conventional SOA hull forms; however the ASV mono was even better (approx 15% better still than the ASV cat). The latter has therefore been chosen as the BB GREEN hull form. Some conclusive highlights from the tank testing: - Hull resistance reduction of more than 40% at design speed range (22 30 knots +). - Equally favorable results also at lower speeds - down to 10 knots. - Very low fan energy consumption (3-6% of total power) - Low wake wash (particularly wake wash energy). - Competitive onboard motions in sea state typical for the targeted operations. BB GREEN- Underwater picture of the ASV mono in the SSPA towing tank. Feb Reduced wetted surfaces and reduced hull resistance.

3 Wave energy (J/m) Grant Agreement no: , Project acronym: BB GREEN Call identifier: FP7-SST-2008-RTD-1. Hull resistance full scale BB GREEN Cat and Mono vs. SOA conventional hulls. As can be seen hull resistance for the BB GREEN ASV s and particularly the ASV mono show a remarkable reduction at all speeds, also at low speeds (red curve) Wash wave energy 35m from CL hull (All measurements reduced to a25m3 vessel) Other projects H-SES 2910-A H-SES 2932-A Full scale results E40 mod 3019 E40 mod 3052 ALiCat mod 3036 BBG CAT mod BBG MONO mod 3409 Froude no, FnD Wash wave energy comparisons BB GREEN vs. various conventional hulls and other ASV hulls. Please observe the BB GREEN Mono mod 3409 (red circles). Throughout the first year of the project partner SE has in collaboration with HIV (Vestfold University College), Norway worked to develop a possible design expression for a BB GREEN ferry. The new BB GREEN design has used the selected ASV mono hull form. Please see enclosed images of the proposed BB GREEN commercial design below.

4 Preliminary design: BB GREEN commercial fast commuter images by. SE and HIV, June Selecting the most appropriate battery cell technology has been another important issue during first year of the project. Partner Amberjac Projects has evaluated different battery chemistries. According to tank testing results, a BB GREEN vessel, at design speed (30 knots), consumes approximately 21 kwh of energy pr NM of operation. The battery pack in a full scale 20 m

5 BB GREEN ferry will have an energy capacity of 400 kwh, giving an effective range of approx 14 NM between each recharge. For the planned concept feasibility test vessel, a 200 kwh (1/2 size) battery is envisaged. During the first year of the project Amber (now no longer a partner) conducted accelerated cell testing of their Lithium Ione Titianate cells, indicating excellent suitability for heavy duty BB GREEN type of applications. The selected battery cells have been selected due to their high number of recharging cycles and ability to take quick charge (in minutes); both vital capabilities for a commercial waterborne ferry application. The proposed construction material and method for BB GREEN will be infused carbon sandwich; excelling over glass reinforced plastics (GRP) and aluminium due to unique combination of light weight and excellent strength properties. Diab AS has during the first year of the project prepared an engineering package for the hull and superstructure to be used as a key part in the tender specification, now completed by Diab and SES Europe. The tendering process for the planned full scale test vessel will commence when the project has been granted a continuation by the Commission. Yards and builders across Europe will be invited to participate in the tender process, which will not only be about building the test vessel, SOA know how on latest solutions in advanced hull forms and composite construction will also be transferred to the winning yard. With the exception of a proposed change in the propulsion system, from large diameter surface piercing props, to highly operational friendly contra rotating duo-prop pod propulsion, the results and achievements in BB GREEN during first year are fully in line with objectives and plans. The project is very optimistic for the continuation and has suggested to the Commission to give the project approval to be continued. Year 2 updates: Discussions around selection of most suitable and low risk propulsion system for the BB GREEN prototype have continued. Additional verification of performance and capabilities of contra rotating pod propulsion (CRPP) vs. large diameter Surface Piercing Props (SPP) have been prepared during year 2. The hull forms for the two tank testing models were designed to match both propulsion systems mentioned above. As part of these assessments, the project has also considered the results from another ASV mono hulled test vessel, Ariel with Volvo Penta CRPP carefully, see illustration below. The evaluations have been related to how well the two candidates would function in practical date to day use on the targeted routes and operations. Manoeuvring / handling; safety issues and overall propulsion efficiency throughout the targeted speed range have among other been verified.

6 Illustration: ASV test vessel «Ariel» under way at 30 + knots. Propulsion: Volvo Penta CRRP (IPS). On request from EU (scientific officer and project reviewer), partner SSPA has during year 2 prepared an addendum to the reporting from the tank testing on CRPP vs. SPP. The results came out positively in favour of CRPP for the full speed range; and these conclusions have been used to support the change to CRPP. Illustrated below, comparison of required total propulsive power (PDtot) for CRPP vs. SPP by partner SSPA.

7 During year 2, a final general arrangement and layout for the proposed BB GREEN test vessel / prototype has been completed and approved by the consortium, (Milestone MS3). SE. assisted by naval designer Mauro Sculli has been responsible for the design. A few renderings are presented below. Illustrations above: Renderings of the BB GREEN design. April Design M. Sculli.

8 During year 2 the project has received the Commission s acceptance on BB GREEN concept feasibility and continuation of the project, as well as acceptance for building the proposed battery pack. Efforts have also been invested in preparing the electric drivelines, the propulsion system and the lift fan system. Updates on arrangements and composite engineering of hull and superstructure have also been updated towards launching of the tender competition for building the test vessel. The tender invitation has been extensively disseminated, through invitations and follows up press releases- and coverage of the planned vessel in the international maritime press. The interest for the BB GREEN low emission initiative has been very positive and a large number of construction yards have expressed interest in participating with a tender offer within the deadline of June 21 st Deadline for delivery of the BB GREEN prototype is set to May 1 st Dissemination and publicity of project related information has been very active during year 2 of the project with close to 50 articles and press coverage in national and international maritime media and web based newsletters. The project coordinator (SE) and end user partner Aqualiner have also participated in several maritime conferences, exhibitions and venues across Europe with BB GREEN related papers and presentations. Parallel with the proposed BB GREEN ASV Mono hull form; Effect Ships International AS, the owner of the ASV technology and IPR has developed and extensively tank tested yet another ASV hull form designed for more demanding sea states. This hull could be used together with the proposed BB GREEN superstructure provided the potential owner / operators would like to use the BB GREEN concept on more demanding routes or in tougher sea states. In terms of hull resistance/powering, the tank testing results for this design match closely the excellent low resistance of the selected BB GREEN hull form; confirming the design flexibility of the ASV concept, as well as increasing potential use / applications. Illustration: ASV BB GREEN type of fast commuter ferry with hull form for more demanding routes and operations; here showing with an alternative superstructure. Design M. Sculli.

9 At the date of reporting the project web site; is ready for publishing. Expected final results: Achieve full scale, on route documentation of the proposed high efficiency BB GREEN fast commuter ferry concept. Contribute to moving a significant part of commuter transport away from roads and onto waterways - where applicable. Through dissemination of final full scale test results and demonstration activities with the full scale prototype encourage current and new waterborne passenger transport operations to consider the low emission BB GREEN type of vessels. When in commercial service, BB GREEN vessels may play an important role in reducing traffic congestions on roads particularly during peak hours. The expected socio economical as well as environmental impacts are foreseen to be very favourable. Developing a fast and efficient new waterborne transport solution and demonstrating zero emission passenger transport on routes in Europe will be a significant achievement with the limited budget of the project. Continue using all available media and dissemination sources to increase awareness of the new BB GREEN concept. The project foresees excellent exploitation opportunities with the new technology when proper full scale documentation is available. To achieve best possible dissemination and demonstration effects with the prototype vessel, the project expects to continue using the BB GREEN prototype also extensively after the official closing date of the project. Contact details for BB GREEN: Project coordinator: SES Europe AS, subsidiary of Effect Ships International AS Sandefjord, Norway. Office phone: Int Contact person: Technical manager Tor Livgard. tor.livgard@effectships.com, Mobile phone: Int SSPA Sweden AB Gothenburg, Sweden. Office phone: Int Contact person: Vice president Bjorn Allenstrom. bjorn.allenstrom@sspa.se Lloyds Register EMEA London, England UK. Contact phone: Int Contact person: Senior Specialist Kim Tanneberger. address: Kim.Tanneberger@lr.org Mobile: Int + 44 (0)

10 Diab AS Oslo, Norway. Contact number: Int Contact person: Man dir Ulf Kristiansen. address: ulf.kristiansen@no.diabgroup.com Mobile phone: Int Aqualiner Rotterdam, The Netherlands. Contact number: Int Contact person: Man dir Gerbrand Schutten. address: office@aqualiner.nl Mobile phone: Int