A more classic use of solar thermal energie is hard to imagine. This product of Bom Aqua is certainly innovative because it uses specially designed pump for ease of construction and maintenance. These objects are real good thrid world aid objects because they teaches people how they can rely on themselves and a about what the sun can mean for them.
The first solar thermal irrigationpump was also build in Africa in Egypt around 1912 by and american called mr. Schuman, helped by a brittish scientist. As you can see below it was quite a big installation. Here's a link to an article about it at the time, here one of our own posts about it.