Download or read book Application of Downhole Heat Exchangers to the Rotorua Geothermal Field written by and published by . This book was released on 1990 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Downhole Heat Exchangers Performance Analysis written by Michael Graham Dunstall and published by . This book was released on 1992 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Response to Exploitation of Rotorua Geothermal Field written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The concern about possible decline in Whakarewarewa spring activity led to the creation of the rotorua Monitoring Program and the rotorua Task Force. Both will shortly issue their final reports (Ministry of Energy 1985a, b). Under the Monitoring Program a considerable database was collected about aquifer, well and spring behavior. From this it has been concluded that exploitation has had the following effects: (1) geothermal aquifer pressures have fallen by up to 0.5 bar; geothermal aquifer pressures beneath Whakarewarewa have fallen by about 0.2 bar; and (3) geothermal flow from Whakarewarewa has been reduced by about half. The effects on the springs could be reduced by reducing withdrawal particularly near Whaka, reinjection (including the use of downhole heat exchangers), or a combination of these.

Download or read book Proceedings of The 20th New Zealand Geothermal Workshop 1998 written by S. F. Simmons and published by . This book was released on 1998 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Utilities and Geothermal written by Geothermal Resources Council and published by . This book was released on 1993 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Rotorua Geothermal Field written by New Zealand. Geophysics Division and published by . This book was released on 1985 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geothermal Energy for New Zealand s Future written by J. V. Lawless and published by . This book was released on 1981 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Direct Use Geothermal Remote Heat Exchanger written by Maximilian; New Zealand Heavy Engineering Research Association Bischoff and published by . This book was released on 2012 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quarterly Bulletin written by and published by . This book was released on 2007-05 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings written by and published by . This book was released on 1976 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Rapporteurs' summaries": pages [xxxi]-cxxxii.

Download or read book Geothermal Energy Update written by and published by . This book was released on 1976 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration. Technical Information Center and published by . This book was released on 1977 with total page 982 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings written by and published by . This book was released on 1989 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geothermal Downhole Heat Exchangers written by He-Song Pan and published by . This book was released on 1983 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the World Geothermal Congress 1995 written by Enrico Barbier and published by . This book was released on 1995 with total page 928 pages. Available in PDF, EPUB and Kindle. Book excerpt: Four hundred and fifty-four papers arranged in 15 sections.

Download or read book Natural Convection Heat Transfer Models for Downhole Heat Exchanger Applications in Shallow Geothermal Systems written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Downhole heat exchangers are widely used at Klamath Falls, Oregon, for low temperature heating applications. The design of such systems leads to the consideration of several interesting problems of buoyancy driven heat transfer in enclosures. Two models are considered: (i) free convection in the uncased wellbore and (ii) thermosyphoning through and around the wellbore casing which is perforated at two or more depths. Preliminary temperature measurements in the uncased well indicate little bulk vertical flow in the upper part of the well and possible circulation in the lower part. An analytical model is formulated to investigate this problem, and the results are compared with the results of some previous investigations of natural convection in similar enclosures. An analytical model is developed for the thermosyphoning case to determine the limitations of energy extraction for downhole heat exchangers that rely on thermosyphoning as the major mechanism of circulation in the well. Theoretical results from the model are presented showing that observed energy extraction rates are possible as a result of thermosyphoning only.