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

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...

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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

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