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dc.contributor.authorHawthorn, Donalden
dc.contributor.authorWilson, Ianen
dc.date.accessioned2019-01-11T00:31:59Z
dc.date.available2019-01-11T00:31:59Z
dc.date.issued2020-01-19en
dc.identifier.issn0145-7632
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/287840
dc.description.abstractUnexpected fouling in condensers on Central Electricity Generating Board power stations operating on the river Trent in the UK in the 1970s prompted an extensive investigation of the phenomenon. Fouling was caused by deposition of calcium phosphate rich scale on the cooling water side. A fouling test rig was specially constructed to study the performance of different chemical treatments. The rig ran two tubes in parallel, one with un-dosed water, and the latter’s data sets from over 100 ‘control’ tests were analysed to determine the mechanism and rate of fouling. The trends could not be explained in terms of conventional scaling indices. Insight into the mechanism was provided by separating precipitation (loss from solution) and deposition (adhesion of some of the precipitated mass to the heated surface): scaling was found to be caused by the deposition of particulates in the recirculating cooling water, driven by the change in pH as the water went through the evaporative cooling stage. Quantitative expressions for fouling were generated from tests on 1.83 m long tubes and were found to give a reasonable prediction of the fouling behaviour observed on a full sized (18.3 m long) single condenser tube on an operating condenser. The results indicated that recirculating water systems need to be approached very differently to once-through systems, and the use of scaling indices for such systems is not recommended.
dc.publisherTaylor & Francis
dc.titleCalcium Phosphate Scale Formation in Power Station Condensers Fed by Cooling Towers: A Case of When Not to Use Scaling Indicesen
dc.typeArticle
prism.endingPage148
prism.issueIdentifier2en
prism.publicationDate2020en
prism.publicationNameHEAT TRANSFER ENGINEERINGen
prism.startingPage138
prism.volume41en
dc.identifier.doi10.17863/CAM.35155
dcterms.dateAccepted2018-07-30en
rioxxterms.versionofrecord10.1080/01457632.2018.1522082en
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2020-01-19en
dc.contributor.orcidWilson, Ian [0000-0003-3950-9165]
dc.identifier.eissn1521-0537
rioxxterms.typeJournal Article/Reviewen
cam.orpheus.successThu Jan 30 10:52:28 GMT 2020 - Embargo updated*
rioxxterms.freetoread.startdate2021-01-19


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