Abstract
Mathematical model of the solar seawater desalination system based on heat pump cycle was established, which was solved by programming with MATLAB language. The system performance was analyzed by changing four variables, including the initial temperature of water tank, drive hot water temperature drop, the mass concentration of LiBr dilute solution and the system startup temperature. The results show that increasing the initial temperature of water tank is conducive to reducing the heat consumption of the auxiliary heat source and increasing the solar energy supply ratio; Increasing drive hot water temperature drop is beneficial to increase the fresh water production, but the heat of the auxiliary heat source required increases, and the solar energy supply ratio decreases; Increasing the mass concentration of LiBr dilute solution will not change the total heat consumption of the system, the heat consumption of auxiliary heat sources and the solar energy supply ratio, but the fresh water production will decrease; Increasing the system startup temperature will increase the heat consumption of the auxiliary heat source, reduce the solar energy supply ratio, and slightly reduce the fresh water production.
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