System for evaluating condensation heat transfer effect

Abstract

The invention relates to a system for evaluating a condensation heat transfer effect. The system comprises a test section, a steam generation system, a cooling water system, an auxiliary condensation system, a data acquisition and monitoring system and a visual observation system, wherein the test section consists of a condensation chamber and a cooling chamber. An evaluating device of the invention can comprehensively evaluate the condensation heat transfer effect of a metal surface through test data, the condensation shape of steam on the metal surface, the dynamic behavior of a liquid film/liquid drop and the like.

Description

【Technical field】 [0001] The invention relates to the technical field of heat transfer evaluation, in particular to a condensation heat transfer effect evaluation system. 【Background technique】 [0002] With the development of steam power engineering towards high-temperature, high-pressure, and large-capacity units, the proportion of nuclear power in conventional power continues to grow, and the demand for wall cooling of rocket engines and various high-heat loads, as well as petroleum, chemical, food, and low-temperature engineering The emergence of various new types of evaporators, condensers and phase-change heat exchangers in the field of boiling and condensation has promoted the vigorous development of research work in the field of boiling and condensation. It is still the most important research of heat and mass transfer researchers at home and abroad. one of the directions. [0003] Vapor condensation is a process in which vapor is cooled or releases latent heat unde...

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Problems solved by technology

In 1930, Schimidt et al. first discovered the phenomenon of droplet condensation, which has a much higher heat transfer intensity than film condensation. After that, although domestic and foreign scholars have been committed to the research on the realization of droplet condensation through surface treatment, the mechanism of droplet condensation and its industrial application , and the dropwise condensation can be maintained for tens of thousands of hours in the laboratory, but so far, the dropwise condensation has not been applied in indu...

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