Wellhead scaling problems in geothermal power plants addressed using a needle valve derivative

Reynir Smari Atlason, Runar Unnthorsson

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


One of the most frequent problems in geothermal power plants is scaling. If scaling is allowed to build in the wellhead it can hinder the flow from the well. In this study we investigate how exactly that problem was solved at HS Energy in Iceland. We look at the problem, describe it and how it has been successfully solved. The solution, a valve called the Elli valve, which can be regarded a derivative of the Giffard’s injector, is then described. This valve has been shown to allow for a better flow control, less problems with regards to scaling removal and has economical advantages over other control valves. This solution should allow geothermal power plants dealing with scaling problems to use the presented solution to solve it effectively, in a cost efficient manner.
Original languageEnglish
Title of host publicationASME 2014 power conference
PublisherAmerican Society of Mechanical Engineers
Publication date2014
ISBN (Electronic)9780791846087
Publication statusPublished - 2014
Externally publishedYes


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  • 2014 ASME Power conference

    Reynir Smari Atlason (Participant)


    Activity: Attending an eventConference organisation or participation

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