Geothermal power harnessing improvement

[Stanley514]

If I undestend it right, one of the main problems of geothermal power plants (especially hot rocks power) is low power density under current technologies.It means we need to drill lot of very deep holes to exact enough energy and drilling constitute main cost of it.I thought on possibility to increase energy circulation between hot and cold sinks,so after drilling only one hole we could harness much energy from large territory.For example could we use some material with very high melting point such as molten salt as an energy carrier?Could it carry much more energy than water?

 

[Aaron Barnard]

Yes, it is possible to use molten salt as an energy carrier in geothermal power plants. In fact, molten salt has been used as a heat transfer medium in geothermal power plants since the 1970s. Molten salt has a much higher thermal capacity than water, meaning that it can absorb and store more energy. This allows for greater efficiency and more energy to be extracted from a single source of geothermal energy. Additionally, molten salt can be used to increase the temperature of a geothermal energy source, allowing for more efficient energy extraction.