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Seawater desalination system driven by combination of solar energy and ocean thermal energy

A kind of solar energy and marine technology, which is applied in the direction of generating mechanical power by solar energy, solar thermal power generation, and mechanisms for generating mechanical power. Utilization efficiency, improving energy utilization efficiency, and improving the effect of full utilization

Inactive Publication Date: 2014-04-30
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reverse osmosis method has an obvious disadvantage, that is, the high-pressure pump it uses consumes a lot of electricity, which will inevitably increase the cost of producing fresh water.
However, the ocean temperature difference power generation described in the prior art has a relatively low grade due to the limited ocean temperature difference and cannot be directly used to drive high-pressure pumps, making it impossible to combine the two

Method used

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  • Seawater desalination system driven by combination of solar energy and ocean thermal energy
  • Seawater desalination system driven by combination of solar energy and ocean thermal energy

Examples

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example 1

[0030] Such as figure 1 As shown, a seawater desalination system driven jointly by solar energy and ocean temperature difference in the present invention includes four loops of a heat source circulation loop, a power circulation loop, a cold source circulation loop and a seawater desalination loop.

[0031] The heat source circulation loop is to use the warm water pump 1 to pump out the warm seawater on the surface of the ocean, heat it through the solar collector 2, then send it to the evaporator 3 to release heat, and finally discharge it back into the ocean.

[0032] The power cycle loop is a Rankine cycle with low-boiling point organic matter as the circulating working medium, and this cycle is a subcritical or supercritical cycle. When using a subcritical cycle, the circulating working fluid can be R123, R134a, R152a, R245fa, isopentane, etc.; when using a supercritical cycle, the circulating working medium can be R143a, R218, R125, R41, CO 2 Wait. When this cycle works...

example 2

[0036] Such as figure 2 As shown, a seawater desalination system driven jointly by solar energy and ocean temperature difference in the present invention includes four loops of a heat source circulation loop, a power circulation loop, a cold source circulation loop and a seawater desalination loop.

[0037] The difference between it and Example 1 is that the installation position of the solar heat collector 2 is different. In this example, the solar heat collector 2 is installed in the middle of the evaporator 3 and the organic turbine 4 in the power cycle loop, and is arranged in the high-temperature circulating working fluid communication section .

[0038] Its heat source circulation loop is to use the warm water pump 1 to pump out the warm sea water on the surface of the ocean, then directly send it to the evaporator 3 to release heat, and then discharge it back into the ocean.

[0039] In the power cycle loop, the low-boiling-point circulating working fluid absorbs heat...

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Abstract

The invention relates to a seawater desalination system driven by combination of solar energy and ocean thermal energy. The seawater desalination system comprises a heat source circulating loop, a power circulating loop, a cold source circulating loop and a seawater desalination loop. The power circulating loop comprises an organic turbine utilizing cycle working fluids to act. The heat source circulating loop comprises a warm water pump for pumping warm seawater. The output end of the warm water pump supplies the heat source for evaporating cycle working fluids through an evaporator. The cold source circulating loop comprises a cold water pump for pump cold seawater. The output end of the cold water pump the cold source for condensing the cycle working fluids through a condenser. The seawater desalination loop is a reverse osmosis desalination system which comprises a high-pressure pump and a reverse osmosis device. The power output end of the organic turbine is connected with the drive shaft of the high-pressure pump. Solar energy collectors are disposed in the heat source circulating loop or the power circulating loop. The solar energy collectors are connected between the warm water pump and the evaporator or between the evaporator and the organic turbine.

Description

technical field [0001] The invention belongs to the field of recovery and utilization of medium and low temperature heat sources, and relates to a seawater desalination system driven jointly by solar energy and ocean temperature difference. Background technique [0002] With the rapid development of the country's economy, the country's demand for energy is increasing, while our country's reserves of fossil fuels are getting less and less, and the burning of fossil fuels is deteriorating the environment. Therefore, the development of new energy has become our country's solution to the energy crisis. and an effective way to achieve sustainable development. The ocean is a huge energy pool, containing a variety of renewable energy sources, among which ocean temperature difference reserves are the largest, and it is recognized by the international community as one of the most potential energy sources for development. At the same time, seawater can also be used for freshwater pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03G6/06F01K23/10
CPCY02E10/46
Inventor 王江峰戴义平王建永赵攀王漫
Owner XI AN JIAOTONG UNIV
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