Hit the ground running - BT Projects · a motivation letter and your CV to info@bt-projects. com...
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Q32019 Quarterly Flash Next phase in the construction of TTC-GD Contractor van der Straaten started the next construction phase of the Tidal Technology Center Grevelingendam (TTC-GD) on the 7th of June. General Managers Mr. Leonard Pekaar and Pieter Bloemendaal (BT Projects) gave the go-ahead by starting the pouring of concrete at the bottom of the Grevelingen, almost six meters below sea level. In April 2019, after the winter break, the welling of the steel construction of the TTC-GD at the Flakkeese Spuisluis in the Grevelingen was resumed. An impressive construction has been completed, and the pouring of concrete in the flow channels could be started. This phase of the construction is expected to be completed around the 1st of October 2019. At that time, around 1000 cubic meter concrete, 5000 square meter dam wall and 150 ton reinforcement steel will have been processed. Then the water can be let in. Graduated On June 28 our intern David Weijers defended successfully his thesis in mechanical engineering at the HAN University of Applied Sciences. David studied the application of low head hydropower as a water management utility while minimizing energetic losses and negative environmental impacts. This involved the development of a mathematical model that describes the behavior of the facility by combining fluid dynamics with mechanical and electrical engineering. We congratulate David with the attainment of his BSc degree and wish him succes in his future carreer. Interested in an internship. Please send a motivation letter and your CV to info@bt-projects. com Editorial Hit the ground running perfectly describes the situation at TTC-GD. Since October 2018, works on the steel construction had been pauzed, allowing BT Projects to prepare for all the works to continue in April 2019. A lot has put in motion to finish the welding of metal sheets on the dam walls in time. Those metal sheets are an essential part of the design of the TTC-GD, as it allows the water to flow smoothly whilst minimizing turbulence. Thereby creating a stable and constant environment to test and demonstrate new turbine technologies. With the start of this new phase, BT Projects gains momentum. The planning consists of the completion of the underwater civil construction of the center, leading to the opening of the sluice gates by October 1st. Salty water will once again be allowed to flow freely into lake Grevelingen, supporting the stabilisation of the natural environment and the local mussel culture. Hit the ground running Young Energy Society Challenge In June a filmcrew of Zeeland Film started shooting a 7 minute documentary on the TTC- GD. It will form part of a collection of 26 cuts on energy transition in Zeeland for the Young Energy Society Challenge (YESC) initiated by the Royal Zeeland Scientific Society in honor of their 250th existence. The aim is to raise awareness with all schools in Zeeland, and to challenge young people to come up with energy solutions. This is done through a Zeeland-wide campaign, workshops for teachers, pupils and students, innovative educational material and other activities.
Transcript of Hit the ground running - BT Projects · a motivation letter and your CV to info@bt-projects. com...
Q32019Quarterly Flash
Next phase in the construction of TTC-GDContractor van der Straaten started the next construction phase of the Tidal Technology Center Grevelingendam (TTC-GD) on the 7th of June. General Managers Mr. Leonard Pekaar and Pieter Bloemendaal (BT Projects) gave the go-ahead by starting the pouring of concrete at the bottom of the Grevelingen, almost six meters below sea level.
In April 2019, after the winter break, the welling of the steel construction of the TTC-GD at the Flakkeese Spuisluis in the Grevelingen was resumed. An impressive construction has been completed, and the pouring of concrete in the flow channels could be started. This phase of the construction is expected to be completed around the 1st of October 2019. At that time, around 1000 cubic meter concrete, 5000 square meter dam wall and 150 ton reinforcement steel will have been processed. Then the water can be let in.
Graduated On June 28 our intern David Weijers defended successfully his thesis in mechanical engineering at the HAN University of Applied Sciences.
David studied the application of low head hydropower as a water management utility while minimizing energetic losses and negative environmental impacts. This involved the development of a mathematical model that describes the behavior of the facility by combining fluid dynamics with mechanical and electrical engineering. We congratulate David with the attainment of his BSc degree and wish him succes in his future carreer.
Interested in an internship. Please send a motivation letter and your CV to info@bt-projects. com
EditorialHit the ground running perfectly describes the situation at TTC-GD. Since October 2018, works on the steel construction had been pauzed, allowing BT Projects to prepare for all the works to continue in April 2019.
A lot has put in motion to finish the welding of metal sheets on the dam walls in time. Those metal sheets are an essential part of the design of the TTC-GD, as it allows the water to flow smoothly whilst minimizing turbulence. Thereby creating a stable and constant environment to test and demonstrate new turbine technologies.
With the start of this new phase, BT Projects gains momentum.The planning consists of the completion of the underwater civil construction of the center, leading to the opening of the sluice gates by October 1st. Salty water will once again be allowed to flow freely into lake Grevelingen, supporting the stabilisation of the natural environment and the local mussel culture.
Hit the ground running
Young Energy Society ChallengeIn June a filmcrew of Zeeland Film started shooting a 7 minute documentary on the TTC-GD. It will form part of a collection of 26 cuts on energy transition in Zeeland for the Young Energy Society Challenge (YESC) initiated by the Royal Zeeland Scientific Society in honor of their 250th existence.
The aim is to raise awareness with all schools in Zeeland, and to challenge young people to come up with energy solutions. This is done through a Zeeland-wide campaign, workshops for teachers, pupils and students, innovative educational material and other activities.
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In the picture... is our technical expert in Computational Fluid Dynamics (CFD). Mr. Vineeth S. Maniyara graduated at TU Delft Electrical Engineering in Mathematics and Computer Science and specialised in Numerical Analysis. He and his team have been modelling the entire design of the TTC-GD, and performed endless CFD simulations to optimize the flows. With a trumpet shaped form as a result.
And not in vain, as the flowrates are beyond the requirements set by Rijkswaterstaat, part of the Dutch Ministry of Infrastructure and Water Management. This design will ensure sufficient inflow of water into the Grevelingen lake to support a balanced and sustainable ecosystem. The modelling also revealed the impact on the surface protection that is currently further being internalised. This exemplifies the endevours of TTC-GD with respect to dynamic engineering in order to attain high standards.
TTC-GD is proud to use its engineering power to contribute to the preservation of the aquatic life in lake Grevelingen and protect the Dutch coast.
New PartnershipOver the last few month, Flower Turbines, BT Projects and Tidal Technology Center Grevelingendam have discussed the possibilities to pilot and demonstrate urban wind technologies. This culminated in the signing of a cooperation agreement on the 20th of June 2019.
Technology Insight - Why Low Head Hydropower mattersIn mountainous areas, where the head in rivers is high, conventional (propeller, Kaplan, bulb) turbines can run very efficiently, although invasive civil works are required, and typically fish mortality is high. But below a head of 25 meter their efficiency and applicability drop sharply. Contrary to high head, there are many locations with ultra-low head available that are unexploited. Also, conventional high head hydropower is scaled up to MW level to compensate for their very high capital and operational costs. Often it is falsly believed that it is not feasible to economically generate electricity from low head locations. Demonstrations of turbines at TTC-GD will tell otherwise.
In addition, to obtain a license, developers need a turbine that is proven to be fish-friendly. The impact of a turbine on fish mortality depends on parameters like rotation and tip speed, blade design, blade position and movement relative to the direction of flow, and pressure differences. These same parameters also affect the performance of a turbine. Also hydro power affects the flow of water, and the design of plants need to take the effect on sedimentation and the impact thereof into account. This poses several technological challenges that can be tackeled by the application of an innovative system. This is exactly what will be studied at the Tidal Technology Center Grevelingendam. And can be applied around the world.
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