New Desalination Technology And Devices

Seawater desalination is one of the effective methods to obtain freshwater resources in the world. But seawater desalination is of high input, high consumption, high cost, and low utilization coefficient. Moreover, the energy of seawater desalination currently used is mainly in the form of fossil-based energy. The paper presents a new type of seawater desalination technology based on the oceanic thermal energy. The use of oceanic thermal energy in seawater desalination is a manifestation of making full use of natural energy. Not only could this method save a lot of fossil energy which is growing tense, but also reduce the energy consumption and the cost of seawater desalination.The main work of experimental research is as follows:(1) Study a new type of seawater desalination technology. The computer simulation on the technology of the whole process has been done to obtain the technological parameters, including the parameter of each pipeline, the power of power equipment, the energy consumption of the system, and so on.(2) Design and calculate the core equipment of the new-type seawater desalination, including the type selection, and the design of the structure and the main dimensions of the evaporator; the type selection, the calculation of heat transfer area of the condenser; and the setting height of the evaporator and the condenser.(3) Establish mathematical model and complete the theoretical calculations. Analysis the influence of worm water's temperature, evaporation temperature and cold water's temperature on the system.(4) Establish the new-type seawater desalination system. Determine the technological process and parameters of the new-type seawater desalination. Design and select the auxiliary equipments. Establish experimental steps, and do some experiments.