TY - BOOK AU - Wahidi, R. ED - TI - A simple hydraulic solar tracking system. En : Proceedings of the symposium on the outlook for energy in the third world U1 - 333.79 PY - 1983/// CY - Tehran PB - Ministry of Energy KW - ENERGIA SOLAR KW - AREAS RURALES KW - CONGRESOS Y CONFERENCIAS KW - IR N1 - 05713 N2 - Most of the people living in villages burn wood, bushes, etc., for house energy needs. This causes land erosion, which is critical in rural areas. Solar concentrators like other solar systems could be used to supply part of the needed energy in such areas. In this paper, a new control systems is introduced in rural areas, which seems to be cheaper than the available ones. This system works almost on the same principle as the one used as water clocks, in ancient Greece. To the author, such a system has not been used for tracking the sun. It consists of two separate tanks, a floater, and a connecting rod. A tank is located at a higher level than other tank and is connected to it via a valve ER -