Mobile measurements for thermal water
Mobile fluid calorimeter measures specific heat capacity.
Exhibitors
Location
Hall 11, Stand B06
Description
Geothermal energy as a renewable energy source is experiencing growing interest. The principle is that geothermal energy, for example in the form of thermal water, is used either directly for heating purposes or to generate electricity. Already before a geothermal power station is built, the heat content of the local thermal water has to be examined. A partly high salt and gas content of the water complicates the predictability of relevant variables. Samples can so far only be analyzed in the laboratory. However, by taking samples on site and transporting them, the the thermal water is depressurised and cooled down - the material properties change. Scientists at the KIT Institute for Nuclear and Energy Technologies (IKET) have therefore developed a fluid calorimeter that can analyse thermal water of up to 170 degrees Celsius directly on site. Thus the water can also readily be checked when the geothermal plant is in operation, with the calorimeter being used as a mobile test stand that is directly linked to the power station network via a “bypass”. The thermal water is immediately fed from the plant into the flow tube of the calorimeter. Here, it flows past temperature probes at the tube entry and outlet as well as past an Ohm heater. Given a certain fluid mass flow, the heat capacity can be determined using the amount of heat contributed by the heater and the difference in temperature between the two probes. Here, the calorimeter ensures that pressure of up to 30 bar is maintained, and it also compensates heat losses. The test stand can be supplemented by further measurement apparatus to determine viscosity and density as well. Thus the mobile test stand is suitable for comprehensive measurement campaigns to determine the material sizes of thermal water and other liquids.
You can get an overview of this technology at KIT stand. More details can be exchanged individually with the responsible scientific employees of KIT after the industry fair.
Contact
Karlsruher Institut für Technologie (KIT)
- Kaiserstr. 12
- 76131 Karlsruhe
- Germany
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