Distillation and desalination system for comprehensively utilizing solar energy chimney and windmill and desalination method thereof
A solar chimney, distillation and desalination technology, applied in the field of solar energy utilization devices, can solve the problems of limited fresh water production, low energy conversion efficiency, limited water vapor condensation rate, etc., and achieve good comprehensive economic benefits, enhanced evaporation effect, and good thermal insulation effect. Effect
Inactive Publication Date: 2011-03-23
TIANJIN SEA WATER DESALINATION & COMPLEX UTILIZATION INST STATE OCEANOGRAPHI
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Problems solved by technology
The disadvantage of using this structure solar chimney for seawater desalination is that this device still heats and evaporates seawater through the heating surface. Due to the limited heating area and large heat capacity of seawater, the evaporation temperature of seawater in the distillation pool does not increase significantly; In the solar distillation pool, the water vapor still relies on the heat transfer mode of natural convection, so the condensation rate of the water vapor is also greatly limited, the actual energy conversion efficiency of the device is low, and the fresh water output is limited
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[0017] The shape of the heat collection shed 14 is designed to be circular, with a diameter of 400m and an area of 1.26×10 5 m 2 , the material can be selected transparent plastic or glass. The heat collecting shed 14 adopts a double-layer interlayer structure, and the interlayer has a gap of 20 cm. The junction of the heat collecting shed 14 from its outer edge to the solar chimney 11 is at an installation inclination angle of 2°. The outer edge of the upper floor of the heat collecting shed 14 keeps a distance of 2m from the ground. A heat storage material 15 is laid under the heat collection shed 14. The heat storage material 15 can be sandstone or concrete block solid heat storage material, or a capsule made of PVC polyester composite material is filled with water or heat transfer oil liquid. Heat storage material or filled with Na 2 SO 4 .10H 2 O or CaCl 2 .6H 2 O molten salt material. The solar chimney 11 is built in the central position of the heat collecting...
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The invention discloses a distillation and desalination system for comprehensively utilizing a solar energy chimney and a windmill, which comprises the solar energy chimney positioned above a heat-collecting shed that is a sandwich structure formed by double-layer transparent material; a source water pool and a fresh water pool are arranged on the periphery of the heat-collecting shed; and heat accumulation material is paved below the heat-collecting shed; a concentrated brine pool is arranged right below the solar energy chimney; the outer wall of the chimney is coated with heat insulating material; an indirect-type condenser and the windmill are arranged at the top part of the solar energy chimney; a generator is arranged on a rotating shaft of the windmill; a source water feeding pipeline is connected between the source water pool and an inlet of the indirect-type condenser; a water-delivery pump is arranged in the source water feeding pipeline; the generator is connected with the water-delivery pump by an electric wire; a nozzle for atomizing source water is arranged in the solar energy chimney; a source water draining pipeline is connected between an outlet of the indirect-type condenser and the nozzle; a fresh water collecting tank is arranged below the indirect-type condenser; and the pipeline is connected between the fresh water collecting tank and the fresh water pool. The distillation and desalination system adopts the complementary advantages of wind energy and solar energy.
Description
technical field [0001] The invention relates to a solar energy utilization device, in particular to a novel system for desalination of seawater and brackish water comprehensively utilized by solar chimneys and windmills. Background technique [0002] Fresh water is one of the material foundations for the survival and development of human society. With the rapid development of my country's national economy and industrial and agricultural production, water consumption and water demand in various places will continue to increase, and the contradiction between supply and demand of water resources will become increasingly acute. In addition, the distribution of fresh water resources in my country is extremely uneven. There are a large number of deserts and semi-desert areas in the western inland areas. In these areas, there is little rainfall and severe water shortage. Many water sources have high salt content and cannot be directly drunk. Also can not be used for industry and ag...
Claims
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IPC IPC(8): C02F103/08C02F1/14F03D9/00F03D9/25
CPCY02E10/72Y02E10/465Y02A20/124Y02A20/141Y02A20/142Y02A20/212Y02E10/46Y02P80/10
Inventor 冯厚军谢春刚赵河立吕庆春张令品齐春华谢峰
Owner TIANJIN SEA WATER DESALINATION & COMPLEX UTILIZATION INST STATE OCEANOGRAPHI