Evolution of centrifugal distillation system with a thermoelectric heat pump for space missions
Part 2. Study of the variable characteristics of a multi-stage distillation system with a thermoelectric heat pump
Keywords:
thermoelectricity, heat pump, distillerAbstract
The work presents the results of testing a multi-stage (5 stages) centrifugal distiller (CD) with the use of a thermoelectric heat pump (THP) to reduce power consumption. In the experiments, measurements were made of the local (online) data of distillation system, such as the temperature of the liquids (initial and distillate), current production, total salt content, specific power consumption at different speeds of distiller rotor, ТНР power, and the degree of concentration. The total duration of the tests was more than 700 hours, the amount of processed liquid (NaCl and urine) was more than 2000 kg. The study of three distillers and two ТНРs and a comparison of their results showed their identity, which characterizes high quality workmanship of these devices. The obtained operating parameters (revolutions n and ТНР power) can be used to optimize the design and operating modes of the entire CD + ТНР system. Bibl. 28, Fig. 8, Tabl. 1.
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