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Low-pressure solar seawater desalination device using ejector

A technology of ejector and solar energy, which is applied in the field of solar energy utilization and seawater desalination, and can solve the problems of low cooling power of natural air cooling, waste of latent heat of condensation, waste of energy, etc.

Inactive Publication Date: 2011-07-27
徐同德
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  • Application Information

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Problems solved by technology

Due to the small heat flux density of solar energy and the low cooling power of natural air cooling, the evaporation and condensation rates are low, which limits the production of fresh water, and the latent heat of condensation released by the condensation of water vapor is wasted and cannot be recycled again. It is a kind of energy. waste

Method used

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  • Low-pressure solar seawater desalination device using ejector
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  • Low-pressure solar seawater desalination device using ejector

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Embodiment Construction

[0012] Accompanying drawing is a kind of specific embodiment of the present invention. A low-pressure solar seawater desalination device using an ejector, mainly composed of an ejector (1), a thin-wall heat exchange device (2), a steam generator (3), a fresh water storage device (4), and a seawater degassing device (5) , solar heat collector (6), fresh water flow pump (7), sea water flow pump (8), vacuum exhaust pump (9), pressure control valve (14) and auxiliary condenser (15). Its structure is that the injection port of the ejector (1) is connected with the outlet of the evaporation chamber of the thin-wall heat exchange device (2), the outlet of the ejector (1) is connected with the inlet of the condensation chamber of the thin-wall heat exchange device (2), and the thin-wall The steam outlet of the condensing chamber of the wall heat exchange device (2) is connected to the inlet of the pressure control valve (14-a), and the outlet of the pressure control valve (14-a) is co...

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Abstract

A Low-pressure solar seawater desalination device using an ejector belongs to the technical fields of solar energy utilization and seawater desalination. In the device, solar energy is used as an auxiliary heat source; the self gravity of seawater is used to counteract the atmospheric pressure; the suction effect of the ejector is used to generate a negative pressure lower than the saturation pressure of seawater; the ejector is used to generate a temperature difference between seawater and condensed water steam; the condensation heat of water steam is recycled; the thin-wall arched structure where the heat exchanging wall ascends slowly in a thin-wall heat exchanging device is used to increase the heat conduction power and the heat exchange area; therefore the evaporation and the condensation are performed at a low temperature difference, and the COP of the ejector is greatly improved. The desalination process has low energy consumption and high fresh water yield, and the seawater desalination cost is reduced.

Description

technical field [0001] The invention relates to a low-pressure seawater desalination device using a solar heat collector as a heat source and an injector. The device uses the high-temperature heat transfer oil from the solar collector to heat a small part of the fresh water distilled from seawater to generate high-temperature water vapor, which enters the ejector and absorbs the low-pressure water vapor generated by seawater flash in the thin-walled heat exchange device. , water vapor at a higher temperature and pressure is ejected as the heat source of the thin-walled heat exchange device, heating the seawater in it, and at the same time condensing itself to produce fresh water. The invention utilizes renewable energy to realize seawater desalination, and belongs to the technical field of solar energy utilization and seawater desalination. Background technique [0002] All the fresh water resources of human beings come from the precipitation of the natural climate, but the...

Claims

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Application Information

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IPC IPC(8): C02F1/14C02F103/08
CPCY02A20/124Y02A20/142Y02A20/212
Inventor 徐同德汤志远
Owner 徐同德
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