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What methods of seawater desalination?
by：Lvyuan Filter
2021-01-22
It is reported that by the end of 1990, the world has been installed desalination device of water production capacity of 13 million cubic meters/day.
By 2000, that number has doubled.
Rapid increase of desalinated water, will produce a series of problems, one of the most prominent is the energy problem.
It is estimated that the daily production of 13 million cubic meters of desalinated water consume 1 every year.
300 million tons of crude oil.
compared with the traditional power source and heat source, solar energy has the advantages of safety, environmental protection, solar desalination technology with conventional energy consumption, no pollution, fresh water received higher purity and respected by people gradually. However, the early use of solar energy for seawater desalination, mainly use the solar energy for distillation. Scientists from Europe's 'reverse osmosis membrane solar lang Ken cycle' desalination route.
according to the eu framework programme, the system without energy storage, and can get higher conversion rate of fresh water. Scientists also examines the environmental and social economic impact of the system, and formulate the marketing strategy. It is understood that this 'reverse osmosis membrane solar lang Ken cycle' the commercial application of seawater desalination system will focus on the Mediterranean coast, there are plenty of solar energy, and there is plenty of water.
desalination method are many, such as distillation, ion exchange method, dialysis method, reverse osmosis membrane method and so on, but will consume large amounts of fuel or electricity. European scientists have recently developed a kind of high efficient, low cost of solar desalination technology.
reverse osmosis membrane water desalination is a traditional seawater desalination technology. In the reverse osmosis membrane technology, sea water at high pressure through the filter membrane, subject to the conditions of filtration membrane pore size, some don't need the material will be in high voltage side. The energy needed for this technology is only for water pressure. Even so, in order to obtain higher productivity, reverse osmosis membrane technology is still energy-intensive and expensive.
in order to reduce the cost and energy consumption, can adopt a method: using low temperature organic lang Ken cycle ( ORC） The combination of solar cells method for reverse osmosis membrane pressure of mechanical energy.
is a kind of low temperature waste heat utilization of thermodynamic cycle, can be heat into electricity, mechanical and other forms of energy. Solar energy can provide heat energy needed for the ORC, and then converted into mechanical energy for water pressure.
in order to improve the thermal efficiency of the waste heat conversion process, researchers pay close attention to what the use of the supercritical fluid of ORC. And the development of the independent European scientists solar desalination system was based on an innovative supercritical ORC in low temperature.
compared with the traditional power source and heat source, solar energy has the advantages of safety, environmental protection, solar desalination technology with conventional energy consumption, no pollution, fresh water received higher purity and respected by people gradually. However, the early use of solar energy for seawater desalination, mainly use the solar energy for distillation. Scientists from Europe's 'reverse osmosis membrane solar lang Ken cycle' desalination route.
according to the eu framework programme, the system without energy storage, and can get higher conversion rate of fresh water. Scientists also examines the environmental and social economic impact of the system, and formulate the marketing strategy. It is understood that this 'reverse osmosis membrane solar lang Ken cycle' the commercial application of seawater desalination system will focus on the Mediterranean coast, there are plenty of solar energy, and there is plenty of water.
desalination method are many, such as distillation, ion exchange method, dialysis method, reverse osmosis membrane method and so on, but will consume large amounts of fuel or electricity. European scientists have recently developed a kind of high efficient, low cost of solar desalination technology.
reverse osmosis membrane water desalination is a traditional seawater desalination technology. In the reverse osmosis membrane technology, sea water at high pressure through the filter membrane, subject to the conditions of filtration membrane pore size, some don't need the material will be in high voltage side. The energy needed for this technology is only for water pressure. Even so, in order to obtain higher productivity, reverse osmosis membrane technology is still energy-intensive and expensive.
in order to reduce the cost and energy consumption, can adopt a method: using low temperature organic lang Ken cycle ( ORC） The combination of solar cells method for reverse osmosis membrane pressure of mechanical energy.
is a kind of low temperature waste heat utilization of thermodynamic cycle, can be heat into electricity, mechanical and other forms of energy. Solar energy can provide heat energy needed for the ORC, and then converted into mechanical energy for water pressure.
in order to improve the thermal efficiency of the waste heat conversion process, researchers pay close attention to what the use of the supercritical fluid of ORC. And the development of the independent European scientists solar desalination system was based on an innovative supercritical ORC in low temperature.
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