Why do solar multi-stage flash evaporation systems, solar multi-stage boiling distillation systems a

Introduction Why do solar multi-stage flash evaporation systems, solar multi-stage boiling distillation systems and solar compression distillation systems have development prospects? The primary way to desalinate seawater is through solar distillation technology.

Why do solar multi-stage flash evaporation systems, solar multi-stage boiling distillation systems a

The primary way to desalinate seawater is through solar distillation technology. At present, it seems that solar multi-stage flash evaporation system, solar multi-stage boiling distillation system and solar compression distillation system are very popular seawater desalination technologies. promising.

Not long ago, Kuwait built a solar seawater desalination device that uses trough-shaped parabolic solar collectors and a 7-meter thermal storage tank. 000 liters to provide heat to flash evaporation systems up to 12 stages, which can distill water every day. Get almost 10 tons of fresh water. This device can also operate continuously at night and in unsatisfactory solar radiation conditions. Its daily water production per unit area of ​​illumination is even 10 times shigher than that of traditional solar stills. We see that the potential of combining solar energy systems with conventional desalination devices is enormous. Theoretical calculations show that multistage boiling distillation has more advantages than multistage flash evaporation systems and requires lower requirements for the same coefficient of performance. Vapor compression solar systems also offer broad prospects, especially in areas where electricity is relatively cheap. Among the different types of multistage boiling distillation systems, multistage stacked tube evaporation systems are most suitable for using solar energy as a heat source. This device has many advantages, the most important of which is that it can work stably at any time between 0 and 100% of theinput steam volume and it can automatically adjust the working state according to the steam volume. Additionally, the required heating temperature is between 70 and 100°C, which can be easily achieved with paraboloid or trough-shaped vacuum tube solar collectors.

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