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Cooling and dehumidifying type seawater desalination system with heat pump circulation and working method thereof

A heat pump cycle, wet technology, applied in chemical instruments and methods, seawater treatment, heating water/sewage treatment, etc., can solve the problems of external heating source environmental problems, reduced energy utilization efficiency, and unrecoverable heat, etc., to improve energy utilization efficiency. , the effect of reducing geographical restrictions and eliminating dependencies

Inactive Publication Date: 2021-06-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0002] In the conventional humidification and dehumidification seawater desalination system, it is necessary to provide an external heat source to drive the system, which limits the application of the seawater desalination method. At the same time, the incoming seawater is used to cool the hot and humid air to produce fresh water, but the concentrated seawater after the humidification process is usually discharged directly, and the heat Unable to recycle, leading to lower energy utilization efficiency and economical decline of traditional humidification and dehumidification seawater desalination systems, and the use of external heating sources may also lead to serious environmental problems

Method used

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  • Cooling and dehumidifying type seawater desalination system with heat pump circulation and working method thereof

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Embodiment Construction

[0010] Refer below figure 1 Describe the operation of a cooling dehumidification desalination system with a heat pump cycle.

[0011] The seawater is heated by the condenser after being boosted by the seawater pump, and then enters the humidifier through the top of the humidifier to humidify the air introduced from the blower to the air inlet at the lower end of the humidifier, and the remaining seawater is discharged through the seawater outlet at the bottom of the humidifier , into the evaporator through the circulating pump to release heat to the refrigerant, recover sensible heat, the seawater discharged from the outlet of the evaporator and the seawater pump outlet are combined and then passed into the condenser; the humidified air passes through the humidification The air outlet at the upper end of the device is discharged into the dehumidifier to release heat to the refrigerant, and then the precipitated fresh water is discharged from the outside, and the air enters the...

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Abstract

The invention discloses a cooling and dehumidifying type seawater desalination system with heat pump circulation and a working method thereof. Heat pump circulation and humidification and dehumidification processes are combined in the system and the system is used for a seawater desalination process. The system comprises a seawater pump, a condenser, a humidifier, an air blower, a circulating pump, an evaporator, a mixer, a compressor, a motor, a first throttling valve, a dehumidifier, an induced draft fan and a second throttling valve. According to the principle of energy transfer between the heat pump system and water and air, the system is driven by the condenser of the heat pump system; the energy utilization efficiency of seawater desalination is improved through heat recovery of heat pump circulation. Meanwhile, the application limitation of a traditional humidification and dehumidification seawater desalination system caused by an additional heat source is avoided, and the national strategic requirements of energy conservation, emission reduction and sustainable development of water resources are met.

Description

technical field [0001] The invention relates to a cooling and dehumidifying seawater desalination system with a heat pump cycle and a working method thereof, belonging to the fields of energy and power engineering and seawater desalination. Background technique [0002] In the conventional humidification and dehumidification seawater desalination system, it is necessary to provide an external heat source to drive the system, which limits the application of the seawater desalination method. At the same time, the incoming seawater is used to cool the hot and humid air to produce fresh water, but the concentrated seawater after the humidification process is usually discharged directly, and the heat Unable to recycle, resulting in lower energy utilization efficiency and economical decline of traditional humidification and dehumidification seawater desalination systems, and the use of external heat sources may also lead to serious environmental problems. Therefore, on the basis o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04C02F1/16C02F103/08
CPCC02F1/04C02F1/16C02F2103/08C02F2303/10Y02A20/124
Inventor 安浩浩何纬峰周萱路裕韩东岳晨蒲文灏
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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