Solar thermal systems are technologies that capture and utilize sunlight to generate heat. They typically consist of solar collectors, which absorb sunlight and convert it into thermal energy, and a heat transfer system that moves this energy to where it is needed. These systems can be used for various applications, including heating water for residential use, space heating, and even powering industrial processes. There are different types of solar thermal systems, such as flat-plate collectors and evacuated tube collectors. Flat-plate collectors are commonly used for heating water in homes, while evacuated tube collectors are more efficient and suitable for colder climates. Overall, solar thermal systems provide a renewable and sustainable way to harness solar energy for heating purposes.