Hi GWB Forum,
I am currently working on my thesis on corrosion and scaling in thermal waters of geothermal power stations. I hope GWB can help me analyse these reactions in geothermal brines (high pressure, high temperature). Therefore I downloaded the student version.
I have the following questions.
1) Can GWB simulate corrosion?
2) As far as I know mineral precipitation can only be calculated with the standard version of GWB. Is there a way to simulate scaling/precipitation in the student version?
3) As far as I know pressure is not included in the calculation, but how can I consider pressure? Do I have to use another database of GWB to include pressure in the calculation? Do I have to use a totally different software like PhreeqC to consider high pressure?
4) Does GWB automatically calculate the amount of CO2 contained in thermal water, if I include other parameters like HCO3-, pH etc.
For example I have an analysis of thermal water, where the brine was first degassed and content of CO2 was measured. Then the amount of ions like HCO3- was measured. Since I can only put either CO2 or HCO3- into the calculation, does GWB conclude CO2 content from the other values like HCO3- or in other words is one of both values sufficient?
For instance I'd like to simulate scaling/precipitation of calcite in a geothermal power station, that pumps the brine from a depth of about 4350 m through pumps, heat exchangers etc. and reinjects it. If I can calculate the solubility of minerals like calcite or can simulate the precipitation for the different locations/parameters in the power station, I can estimate the extent and location of scaling. The pressure is an important parameter in this example because the brine loses pressure, which leads to degasing of CO2, which leads to precipitation. That's why I need to consider it.
Thanks in advance for the answers.