Direct steam generation: increasing temperatures is crucial for CSP
Direct Steam Generation could hold the secret to reaching higher steam temperatures and simplifying balance of plant configurations for large-scale solar thermal projects.
As the CSP industry moves forward into an era of large-scale development in the United States the ability to reach higher operational temperatures to improve the efficiency of solar thermal power production is at the forefront of R&D efforts. In a recent interview with CSP Today, Juergen Peterseim of Eckrohrkessel GmBH, emphasized the advantages of direct steam generation when compared to conventional heat transfer systems.
Experts argue that a key advantage of using direct steam as a heat transfer fluid is that it would allow for operational temperatures in excess of 500°C, at which steam turbines are more efficient and well developed for current industrial type applications. Specialist also argue that replacing oil with water in the HTF process will reduce the environmental risks in CSP, as well as simplify overall plant configuration for lowered investment and O&M costs. Peterseim also stated that “there is no need to circulate a second fluid which in turn reduces pumping power and parasitic losses”.
However, despite this potential, maintaining a stable fluid flow is the main challenge presented by direct steam generation. Peterseim went on to say that this challenge “is mainly caused by cloud covering of sections of the solar field”, explaining that “a reduced heat flux in one part of the plant can affect the water circulation to certain areas or reduce water access to others”. Therefore, hot spots that occur on absorber tubes as a result of this flow stratification would cause damage to balance of plant components and lead to extended plant downtime. He explained that to combat this “it is crucial to maintain a stable flow to ensure permanent cooling of the absorber tubes, and this can only be achieved by a very precise water circulation design”.
Peterseim will be discussing the advantages of Direct Steam Generation at the 2nd CSP Plant Optimization Summit later this year in San Francisco (7-8 September). The event is aimed at those looking to optimize plant efficiency and drive down LCOE in CSP, and will bring together leading developers, EPC groups and technology providers throughout the United States.
Small Steam Generation Systems - News
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In a recent interview with CSP Today, Juergen Peterseim of Eckrohrkessel GmBH, emphasized the advantages of direct steam generation when compared to conventional heat transfer systems. Experts argue that a key advantage of using direct steam as a heat
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Job for Floating Systems Engineer in United Kingdom (REF ...
Job Details
Location: United Kingdom
Salary: Salary commensurate with experience
Working Locations: Office / Offshore
Posted: 11 August 2011 at 06:00 (exp: 08/09/2011)
Key Requirements- Chartered Offshore, Structural, Marine, Civil Engineer (or equivalent).
- Experience in structural and naval architectural engineering of offshore floating production facilities and their station keeping systems - Strong knowledge of industry codes and standards - Understanding of the design, specification, construction and installation of offshore structures - Previous hands on experience in undertaking structural analysis
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Please click the apply button where you will then be brought to the BP portal. All applications need to be through the portal.
Job DescriptionDiscipline Engineers in Production Division work in their core discipline but are expected to have or develop generalist skills - maintenance, supply chain management, asset integrity etc. The work could be ‘in country’ or in BP’s main offices in Sunbury, Houston and elsewhere.
Additionally to support all divisions of the company there is a requirement to recruit engineers to work in centralised teams (Sunbury/Houston). This work involves some travel to operating sites to support local staff when necessary.
Applicants to this job specification would be considered for all Production Division jobs and for the centralised teams in Sunbury and Houston.
The job involves performing work relating to structural, naval architecture and mooring aspects of floating production facilities, in particular ensuring technical standards have sufficient rigor, providing ad-hoc Project and Operations support to the regional performance units, managing technology development, representing BP in external development project networks, assisting in capturing and sharing knowledge throughout the discipline.
The work involves:
- Review and update of BP technical practices and guidance documents covering marine aspects of floating production facilities.
- Providing support to discipline network via discipline network meetings, newsletters, website updates including uploading key technical reports.
- Coordinating marine lessons learnt from floater projects and operations and raise discipline awareness of best practice.
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