System and method for testing frosting property of empty bath type vaporizer

Abstract

The invention relates to the technical field of empty bath type vaporizers, in particular to a system and a method for testing the frosting property of an empty bath type vaporizer. The system comprises a low-temperature liquid storage tank, a vacuum heat insulation pipeline, a super-cooler, a test section, a vaporizer and a temperature and pressure test device; liquid nitrogen is automatically compressed by the low-temperature liquid storage tank, the compressed liquid nitrogen is conveyed to the super-cooler for pre-cooling through the vacuum heat insulation pipeline, the liquid nitrogen reaching certain super-cooling degree is fed into the test section for vaporization, the test medium flowing out of the test section is totally vaporized by the empty bath type vaporizer and heated to an environmental temperature, and then the quantity and the flow rate of the test medium are measured by a gas mass flow meter. The growth of a frost layer on the surface of a finned pipe is in a progressive development process, the process enables the thickness of the frost layer and the surface temperature of the finned pipe to tend to stable values, the operating parameter and the environmental parameter of the finned pipe have certain influence on the growth speed of the frost layer, and by contrast, the environmental humidity has the most remarkable influence on the growth speed of the frost layer.

Description

[technical field] [0001] The invention relates to the technical field of an air-bath evaporator, in particular to a test system and method for frosting characteristics of an air-bath evaporator. [Background technique] [0002] As we all know, the air bath vaporizer is a heat exchange vaporizer device, in order to improve the heat transfer coefficient, it is realized by increasing the heat exchange area. [0003] my country currently has a large production scale and equipment of air bath vaporizers. For this type of product, my country currently has neither national standards nor industry standards, let alone access thresholds or relevant regulations. On the other hand, due to the The carburetor has a simple structure and is more convenient to manufacture and produce. Many companies can easily realize the production of this type of carburetor. In addition, the country has no industry threshold or relevant regulations for this industry, which makes the carburetor products in my...

AI Technical Summary

Problems solved by technology

[0003] my country currently has a large production scale and equipment of air bath vaporizers. For this type of product, my country currently has neither national standards nor industry standards, let alone access thresholds or relevant regulations. On the other hand, due to the The carburetor has a simple structure and is more convenient to manufacture and produce. Many companies can easily realize the production of this type of carburetor. In addition, the country has no industry threshold or relevant regulations for this industry, which makes the carburetor products in my country vary in performance and price. The lack of uniformity makes the whole industry more chaotic. The root cause of this situation is the lack of testing systems and testing methods for empty bath vaporizers. Manufacturers and users lack the mechanism responsible for the heat and mass transfer process involved in empty bath vaporizers Necessary understanding, not to mention in-depth research and optimized design, it is precisely because of this reason that security accidents occur frequently

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