| Title | Downhole Heat Exchanger Experiments - Rotorua Geothermal Field |
|---|---|
| Authors | Dunstall, M. and D. H. Freeston |
| Year | 1988 |
| Conference | New Zealand Geothermal Workshop |
| Keywords | |
| Abstract | The need for research for the application of downhole heat exchangers (DHE) in the Rotorua Geothermal field has arisen from the increased use of DHEs for heating and the limited performance information available to assist effective and efficient design. An experiment was designed in which two 4 in. diameter wells located at the Works depot in Te Ngae Road have been used. RR679 is fitted with a 'U1 tube DHE and well RR520, approximately 15 m away, is monitored for interference effects. The design and installation of the test facility is described and results of some experiments presented. A theoretical model of the installation is also presented which enables studies to be made of the major well and DHE design parameters. |