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针对传统海水淡化方法由于高能耗在电力缺乏地区无法应用的问题,提出了太阳技术与膜蒸馏技术的相结合,并组装了1套小规模太阳能膜蒸馏海水淡化装置。研究了流量、进口温度、太阳光照度等因素对集热管出口温度的影响,和太阳照度、流量对膜蒸馏淡水通量的影响。结果表明,可以通过采用多集热管、低流速的方法,使得在总流量不变的情况下提高集热管出口温度。在照度为64 klx条件下,质量流量为2.054 g/s时膜蒸馏淡水通量最大,为168.9 g/(m2·h)。装置效果良好,实现了利用太阳能进行海水淡化的过程,可为缺水缺电的海岛及海洋平台的淡水供应提供一个选择。
Aiming at the problem that the traditional desalination method can not be applied in the area lacking electricity due to high energy consumption, a combination of solar technology and membrane distillation technology is proposed, and a set of small-scale solar membrane distillation seawater desalination device is assembled. The influences of flow rate, inlet temperature and solar irradiance on the outlet temperature of the collector tube were studied. The effects of solar irradiance and flux on the membrane freshwater flux were studied. The results show that it is possible to increase the temperature of the outlet of the heat pipe by keeping the total flow rate unchanged by adopting the method of collecting tubes and low flow rate. Under the condition of illuminance of 64 klx, the flux of membrane distillation freshwater is the highest, which is 168.9 g / (m2 · h) when the mass flow rate is 2.054 g / s. The device works well, enabling the use of solar energy for seawater desalination, providing an option for fresh water supply to islands and offshore platforms lacking water and electricity.