Seawater desalting device and method of off-grid type photovoltaic photo-thermal coupled heat pump

Abstract

The invention discloses a sweater desalting device of an off-grid type photovoltaic photo-thermal coupled heat pump. The sweater desalting device of the off-grid type photovoltaic photo-thermal coupled heat pump comprises a direct-expansion type solar heat pump system, a material water tank, a heat storage water tank, a flash tank and a master controller, wherein the direct-expansion type solar heat pump system comprises a photovoltaic photo-thermal evaporator; the photovoltaic photo-thermal evaporator is connected with a second tee joint, a gas-liquid separator, a compressor, a condenser, a liquid storage device, a drying filter, a visual liquid lens, a throttling device and a first tee joint by a pipeline in sequence; and the first tee joint is connected with a first solenoid valve, a regenerative heat evaporator, a condensing evaporator, a second solenoid valve and the second tee joint by a pipeline in sequence. The invention further discloses a method for desalting the sweater by utilizing the seawater desalting device of the off-grid type photovoltaic photo-thermal coupled heat pump. According to the seawater desalting device and the seawater desalting method of off-grid type photovoltaic photo-thermal coupled heat pump disclosed by the invention, the renewable energy sources can be sufficiently utilized and the energy utilization efficiency is improved, so that the off-grid operation of the sweater desalting device in remote areas including an island without power supply and the like is realized.

Description

technical field [0001] The invention belongs to the fields of solar photovoltaic photothermal technology and seawater desalination technology, and relates to an off-grid photovoltaic photothermal coupled heat pump seawater desalination device and a method for desalinating seawater or brackish water by using the device. technical background [0002] Water is the source of all life. With the continuous development of industry and agriculture and the rapid growth of population, the demand for fresh water will increase sharply. The shortage of fresh water will be a serious problem that many countries will face in the future. Especially in some islands and remote saltwater lake areas, most of the water resources are seawater or brackish water, and there is a serious shortage of fresh water. At the same time, energy supply is relatively difficult, but solar energy is abundant. Therefore, using solar energy to desalinate seawater or brackish water is the solution to these problems....

AI Technical Summary

Problems solved by technology

The device mainly has the following three problems: the use of the spotlight tracking device increases the complexity of the system; the latent heat of condensation of the secondary steam is not used; the evaporation temperature may be high due to the concentration of sunlight, causing the lubricating oil in the compressor to Carbonization, causing the system to malfunction

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