Patent DE-102008052964-A1 (DE)
Title: Water distillation plant comprises solar collectors, which operate evaporator and condenser connected with the evaporator for the evaporated cleaned water, and pre-heater for preheating the water to be distilled supplied to the evaporator
Inventor: TUERK PETER
IPC: C02F1/14
Filed: 2008-10-23
Abstract: The water distillation plant comprises solar collectors (1), which operate an evaporator (2) and a condenser (5) connected with the evaporator for the evaporated cleaned water, and a pre-heater for preheating the water to be distilled supplied to the evaporator. Each solar collector has an absorber for the solar radiation which is enclosed in a transparent housing upwardly extending from below, and a metal tube, which is heat-conductively connected with the absorber and extends in a longitudinal direction of the housing. The metal tube is filled with a liquid. The water distillation plant comprises solar collectors (1), which operate an evaporator (2) and a condenser (5) connected with the evaporator for the evaporated cleaned water, and a pre-heater for preheating the water to be distilled supplied to the evaporator. Each solar collector has an absorber for the solar radiation which is enclosed in a transparent housing upwardly extending from below, and a metal tube, which is heat-conductively connected with the absorber and extends in a longitudinal direction of the housing. The metal tube is filled with a liquid, where a top end of the metal tube protruding from the housing is provided with a condenser head for condensing the evaporated liquid in the metal tube. The evaporator is formed by a vessel with the water to be distilled. The condenser head of the solar collector protrudes into the vessel. The pre-heater is formed by a double-jacket heat exchanger, which forms the condenser for the water evaporated in the evaporator. The water evaporated in the evaporator is supplied to an inner tube of the exchanger and the water to be distilled is supplied to an annular space between the inner tube and an outer tube of the exchanger. A floating valve (24) is provided in the evaporator for regulating the supply of the water to be distilled, is formed for regulating the filling level in the evaporator, is arranged between the double-jacket tube and the evaporator, and is formed for supplying the preheated water to the evaporator. The evaporator vessel is formed by a tube, which is penetrated by sleeves that form the receptions, in which the condenser head is plunged. The evaporator vessel is made of stainless steel, copper alloy and/or titanium, or plastic containing metal mesh. The water distillation plant has a frame including the evaporator, double-jacket heat exchanger and the solar collectors that obliquely upwardly extend. The double-jacket heat exchanger is arranged on the frame over the evaporator and is connected with the evaporator over a riser tube (4). A storage container for the water to be cleaned is arranged on the frame over the double-jacket heat exchanger and is connected with the double-jacket heat exchanger over a down pipe. The frame is processably formed. The water distillation plant includes a device for adjusting the inclination of the solar collectors that obliquely upwardly extend.