Key points
Designing and constructing a new solar power project is a complex operation that requires a variety of skills and expertise. For one project in Spain, the systems integrator selected a range of Bürkert products to ensure the cleanliness of the process water in order to maintain efficiency and productivity.
The solar-thermal plant uses parabolic-through concentrating solar power (CSP) technology. Parabolic mirrors direct the sun’s rays to a glass collector through which oil flows and gets heated up to around 400ºC.The hot oil is used to turn water into steam which is used to drive a turbine that turns the generator.
In this case the plant has two 50 MW generators and the water used in the process is groundwater. All of the impurities need to be removed before it can be used to power the turbine, otherwise the impurities would gradually build up on the turbine blades leading to corrosion and possible imbalance of the rotor.
In addition, the purified water is used to clean the mirrors regularly. If this was done with untreated water the mirrors would suffer from a build-up of contaminants, which would reduce the efficiency of the energy collection process.
Effective process design
To meet the water quality requirements of the solar plant, a treatment process using reverse osmosis was proposed to remove the impurities from the water supply.
The tier 1 contractor, responsible for the construction of the complete solar installation employed a systems integrator to deliver the reverse osmosis process. For its part, the systems integrator approached Bürkert for assistance with the design and implementation of the control system.
The reverse osmosis equipment is designed and manufactured in a skid format that simplifies the installation process and reduces the amount of time required on site.
Implementing a fluid control system successfully requires a number of objectives to be met. From the measurement and control of the technical parameters to the visualisation of the process itself.
Efficient data display
Bürkert designers worked closely with the systems integrator to create a simplified yet flexible solution based around the Type 8619 multiCELL controller. One of the key benefits of the 8619, is the ability to deal with up to 6 channels of data, which reduces the total number of displays required throughout the installation.
At the time of the design, the 8619 was the only controller capable of displaying flow measurements as well as analytical data such as conductivity, redox, pH and temperature. The Type 8619 can be configured to display any combination of these parameters depending on the needs of the installation.
Furthermore, once the Type 8619 has been programmed, all the settings can be transferred to a memory card and then uploaded onto any number of similar devices.
This project required two identical skids and this feature reduced the amount of time required for the setup of the second skid. This has significant benefits for OEMs, minimising any errors between builds, removing the need for programming technicians for every unit and increasing productivity.
Simplifying the procurement process
Bürkert’s wide range of products was an important factor for the integrator, reducing the number of suppliers and the number of processes required to complete the project.
In all, the project incorporated 12 Type 8619 multiCELL units, as well as 18 Type 8200 probe holders (8200s provide a sealed fixed mount for a range of 120mm analytical probes), used in this instance to measure pH, oxidation-reduction potential (ORP) and temperature.
In addition, 16 Type 8030 paddle wheel flowmeters, 36 pressure sensors and 18 temperature sensors were also sourced from Bürkert, along with two pneumatic control cabinets and Type 8640 valve islands.
Ruben Nalda, Area Sales Manager for Bürkert in Spain, explains: “The project integrators expressed considerable satisfaction with the Bürkert solution, feeling that it offered a very cost effective and flexible approach, supported by high quality and reliable sensors.”
Once the construction of the reverse osmosis units had been completed, Bürkert offered to help with the commissioning process to ensure that all of its products were operating correctly. In fact, the intuitive design of the Type 8619 and the sensors connected to it, allowed the equipment to be correctly installed and configured by the engineers building the reverse osmosis skids.
For OEMs, the intuitive operation of Bürkert’s products means that the manufacturer can provide its own technical support to customers, without the need for Bürkert assistance. Once a design has been conceived and implemented, it can provide reliable and cost-effective service without further intervention, reducing costs and reliance on third parties for ongoing support.
Kirsty Anderson
Bürkert Fluid Control Systems
Fluid Control Centre, 1 Bridge End, Cirencester, Gloucestershire, GL7 1QY, United Kingdom
Tel: +44 (0)1285 648720 Fax: +44 (0)1285 648721
Web: www.burkert.co.uk
Email: kirsty.anderson@burkert.com
Burkert Fluid Control Systems
- 01285648720
- sales.uk@burkert.com
- http://www.burkert.com/
- Fluid Control Centre 1 Bridge End Gloucestershire Cirencester GL7 1QY GB
About us
Bürkert is present in thirtyfive countries around the world. We also work with a large network of distributors and partners, which means we are as close as possible to our customers. This global presence ensures full service and support to all of our customers in every country around the world. Research is the lifeblood of our company.
At Bürkert, we are never satisfied with the status quo and are continually seeking new technologies and solutions for our customers. Every year, our people develop new and highly advanced products and solutions, ranging from integrated process measurement and control units to the most sophisticated systems used in pharmaceutical research. To be a market leader, we are also an R&D leader.
Therefore, our investment in research & development is one of the highest in our industry. In our research centres in Germany and France, 150 people are committed to working for a common future for our company and our customers. We are committed to offering our expertise wherever it is needed, anywhere in the world. This global presence ensures that our advances in fluid control technology are also global.
What we do in a nutshell
Manufacture of process equipment. One of the few manufacturers to provide solutions for the complete control loop.
Where we supply to
UK Ireland, Europe
Industries we supply to
Food and Beverage, Pharmaceutical Cosmetics Toiletries, Water and Wastewater
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