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Abstract

Summary

Implementation of the CO2-solubility model of into a simulation tool for the Bruchsal power plant yields results that indicate single-phase flow at 22 bar, at the production temperature of 124 °C, 130 g/L total dissolved solids and at a CO2-content of 0.3 wt.%. This, however, contradicts the observation in Bruchsal. The simulation was adjusted to 22 bar and 124 °C, yielding a CO2-content of 0.85 wt.%. The simulation is validated against gas breakout pressure measurements, which indicate that single-phase flow was not reached until 31.7 bar (operating conditions 22 bar). Using this pressure as a minimum value, the minimum CO2-content at single-phase conditions is estimated at 0.86 wt.%, which is in accordance with the results from the modified simulation tool. The general applicability of the new simulation tool has to be validated at other sites, before it can be implemented into a holistic power plant model. The successful validation at Bruchsal indicates that the new simulation tool and its implementation into holistic models is a promising tool for predicting NGC behaviour early in the development of geothermal power plants already in the exploration stage.

© EAGE Publications BV
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/content/papers/10.3997/2214-4609.202021019
2020-11-16
2024-04-25

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.202021019
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CO2 Handling in Binary Geothermal Systems – a Modelling Approach for Bruchsal, Germany
Conference Proceedings 2020, 1 (2020); https://doi.org/10.3997/2214-4609.202021019
/content/papers/10.3997/2214-4609.202021019
/content/papers/10.3997/2214-4609.202021019
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