A Temperature-Profile Method for Estimating Flow Processes in Geologic Heat Pipes

Birkholzer, J.T.

United States. Department of Energy. Yucca Mountain Project Office.

关键词: Storage;    Radioactive Wastes;    Gas-Flow Processes;    Water;    04 Oil Shales And Tar Sands;   

DOI  :  10.2172/850439
RP-ID  :  NA
RP-ID  :  NA
RP-ID  :  850439

美国|英语

来源: UNT Digital Library

【 摘 要 】

Above-boiling temperature conditions, as encountered, for example, in geothermal reservoirs and in geologic repositories for the storage of heat-producing nuclear wastes, may give rise to strongly altered liquid and gas flow processes in porous subsurface environments. The magnitude of such flow perturbation is extremely hard to measure in the field. We therefore propose a simple temperature-profile method that uses high-resolution temperature data for deriving such information. The energy that is transmitted with the vapor and water flow creates a nearly isothermal zone maintained at about the boiling temperature, referred to as a heat pipe. Characteristic features of measured temperature profiles, such as the differences in the gradients inside and outside of the heat pipe regions, are used to derive the approximate magnitude of the liquid and gas fluxes in the subsurface, for both steady-state and transient conditions.