单效蒸馏海水淡化装置热力性能实验研究

板式低温蒸馏海水淡化技术是远洋船舶的重要淡水制备方法，文章根据板式低温蒸馏的热力学原理，设计并制造了一台蒸馏海水淡化装置，并以产水率为优化目的进行了相关实验研究。结果表明：热源水入口温度和流量是影响系统产水率的重要参数，产水率随热源水入口温度(60～74℃)和流量(2000～3900 kg/h)的增大基本呈线性增大的趋势；进料水流量存在最优值(150 kg/h左右)，低于最优值时，产水率随进料水流量增大而增大，超过最优值后，进料水流量并不能显著提高产水率，甚至导致产水率下降，相关实验数据对海水淡化装置的优化设计提供了数据支持。

An Experimental Study on Thermal Performance of a Single Effect Distillation Desalination Device

Plate heat exchanger (PHE) freshwater generators are wildly applied at ocean vessels for freshwater supply. In this paper, based on the thermodynamics principle of PHE, a distillation desalination device was designed and manufactured. Water production rate of the investigated PHE device was tested to obtain an optimized setting. The experimental results showed that, the heat source water temperature at inlet and lfow rate are the two major factors that affect the freshwater generator performance. Basically, freshwater production rate is linearly with the increase of heat source water inlet temperature increases (60-74℃) and lfow (2 000-3 900 kg/h). Feed water lfow has an optimal value of about 150 kg/h, and the water production rate increases with the feed water lfow below the optimal value. Feed water lfow did not increase the rate of water production signiifcantly while the feed water lfow over the optimal value, and even led to the decrease of the water production rate. The obtained data can provide empirical reference for the design and optimization of PHE devices.