Geothermal well downhole heat exchanger design analysis Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/p2676x817

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • The low temperature geothermal resource at Klamath Falls, Oregon is widely used for heating buildings. A common technique for using this resource consists of a heat exchanger down in the well inside a casing which extends the full length of the well. Slots are cut in the casing to allow circulation of the geothermal water into the casing and past the downhole heat exchanger. This results in thermosyphoning between the inside and outside of the casing. Mathematical models of thermosyphoning through the well casing were developed for both with and without downhole heat exchanger present. Results of the model without heat exchanger present showed that thermosyphoning is sufficient to account for observed flow rates through the casing. Model results with heat exchanger included show the substantial influence of thermosyphoning on heat transfer rates and indicate several promising approaches to maximizing output. Because of the importance of scaling and corrosion on the success of a downhole heat exchanger installation, a study of available literature on scaling and corrosion relevant to downhole heat exchangers in low temperature geothermal systems was made and recommendations for corrosion control were developed. Scaling was not deemed severe enough to justify available control measures.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome, 24-bit Color) using ScandAll PRO 1.8.1 on a Fi-6770A in PDF format. CVista PdfCompressor 5.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-11-01T16:33:31Z (GMT) No. of bitstreams: 1 KreitlowDavidB1978.pdf: 979974 bytes, checksum: 96e6410ae32e2859eb07c9b41dde1c18 (MD5)
  • description.provenance : Approved for entry into archive by Deborah Campbell(deborah.campbell@oregonstate.edu) on 2013-11-04T23:20:19Z (GMT) No. of bitstreams: 1 KreitlowDavidB1978.pdf: 979974 bytes, checksum: 96e6410ae32e2859eb07c9b41dde1c18 (MD5)
  • description.provenance : Submitted by Madison Medley (mmscannerosu@gmail.com) on 2013-10-31T21:39:30Z No. of bitstreams: 1 KreitlowDavidB1978.pdf: 979974 bytes, checksum: 96e6410ae32e2859eb07c9b41dde1c18 (MD5)
  • description.provenance : Made available in DSpace on 2013-11-04T23:20:20Z (GMT). No. of bitstreams: 1 KreitlowDavidB1978.pdf: 979974 bytes, checksum: 96e6410ae32e2859eb07c9b41dde1c18 (MD5) Previous issue date: 1977-06-06

Relationships

In Administrative Set:
Last modified: 08/07/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items