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Application research of thermoelectric refrigeration in air gap membrane distillation system.

[In Chinese. / En chinois.]

Author(s) : YANG S., YANG X., TIAN R., et al.

Type of article: Article

Summary

A Parallel-Connected AGMD system was designed, which uses thermoelectric refrigeration instead of mechanical refrigeration to provide refrigeration capacity for membrane distillation. With the analysis of matching method between membrane distillation and thermoelectric refrigeration, the basic requirements of the optimum matching mode have been given out. A thermoelectric refrigeration membrane distillation cold chamber with water cooled heat dissipation components was built to research the refrigeration performance of a TEC with air-cooled model in its cold side. The results show that the cryogenic temperature of the thermoelectric refrigeration membrane distillation cold chamber can meet the membrane distillation operation requirement under constant intensity of heat dissipation. Under the experimental conditions of inlet water of 20°C and 100L/h and air flow rate of 660m3/h, when the working current of TEC is 5.5 A, the thermoelectric refrigerating capacity is 87.1 W and cooling efficiency is 1.3, which reaches the maximum of both. The corresponding theoretical distillation flux is calculated to be 40 kg/(m2•h). This investigation establishes the foundation for the theoretical research and practical application of solar air gap membrane distillation system with thermoelectric refrigeration.

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Pages: 86-92

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