There are multiple solutions of that sort but all failed due to high maintenance costs Usually the liquid is some sort of oil that csn reach higher temperature

There are multiple solutions of that sort but all failed due to high maintenance costs Usually the liquid is some sort of oil that csn reach higher temperature and then the oil is used to heat water Another design uses hundreds of mirror centered around a high tower with molten salts as the heat medium The really good part of this design is that the molted salts can produce energy for 3-4h after the sun is set.