Assessment of Heat Losses of Steaming Ground by Calorimetry
- Location
- Wairakei, New Zealand; Taupo Volcanic Zone
- Conference
- New Zealand Geothermal Workshop
- Year
- 2002
- Session
- Thermal Manifestations
- Language
- English
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Abstract
The total heat flux at steaming ground sites was measured using a water-filled ground calorimeter; the flux varies between c. 0.03 and 2.3 kW/ m2 at sites where boiling temperatures occur at depths of c. 4 m and 0.1 m respectively. Analysis of various soil parameters and temperature logs points to a 'heat pipe' transfer mechanism. This maintains a high conductive transfer in a thin surface layer. In addition, convective transfer of ascending vapour through the surface layer increases the total flux.
Copyright 2002, University of Auckland. Readers who download papers from this site should honour the copyright of the original authors, and may not copy or distribute the work further without the permission of the original publisher.