Preparation method for indirect devaporizer
An evaporative cooler, an indirect technology, used in heat exchange equipment, lighting and heating equipment, tubular elements, etc., can solve the problems of complex processing technology, limited service life, high process requirements, and achieve enhanced hydrophilicity and structural improvement. , the effect of uniform wall distribution
Inactive Publication Date: 2013-01-30
XI'AN POLYTECHNIC UNIVERSITY
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Problems solved by technology
The former is applicable to tube, plate-fin and heat pipe indirect evaporative coolers, but the process is complicated and the cost is high; the latter is only applicable to tube and heat pipe, not to plate-fin indirect evaporative coolers. And the process requirements are high, the long-term operation is easy to rot, the service life is limited, and the replacement is complicated
Method used
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[0034] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0035] The preparation method of indirect evaporative cooler of the present invention,
[0036] First, wash and dry the metal aluminum plate, and then clean the surface with acid and lye to remove rust and oil;
[0037] Process the surface-treated metal aluminum plate into a wick structure;
[0038] Process the metal aluminum plate processed in step 3 into a corrugated shape or a tube shape, and the corrugated shape is as image 3 As shown, the tubular shape is a round tube or an oval tube, and the structure is as follows Figure 4 shown. The secondary air exchanges heat and moisture with the water film on the wall surface of the heat exchange plate 3 and the heat exchange tube 4 to realize evaporative cooling, and the primary air and secondary air exchange heat through the metal aluminum wall of the heat exchange plate 3 and the heat exch...
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The invention discloses a preparation method for an indirect devaporizer, comprising the following steps: firstly, superficial treatment is carried out on metal aluminum plates; the metal aluminum plates after the superficial treatment are processed into a lampwick structure; then the metal aluminum plates are processed into a corrugated shape or a tubular shape; a plurality of corrugated metal plates are vertically arranged in parallel to form a heat exchanging plate set; a plurality of tubular metal plates are arranged in parallel in a plurality of rows to form a heat exchanging tube set; the upper part of the heat exchanging plate set or the upper part of the heat exchanging tube set is provided with a water distributor; the water distributor is connected with a water circulating pump and a trough through a pipeline to respectively form a plate fin type indirect devaporizer or a tubular type indirect devaporizer. In the preparation method, the lampwick structure formed by the surfaces of the metal aluminum plates is adopted to improve the structure of a heat exchanging surface, the wicking action is used to enhance the hydrophilicity of the heat exchanging wall surfaces of aluminum plates, the heat transferring medium of a secondary air side runner of the indirect devaporizer is strengthened, and the efficiency, the energy saving performance and the water saving performance of the indirect devaporizer are improved.
Description
technical field [0001] The invention belongs to the technical field of heat and mass exchange, and in particular relates to a preparation method of an indirect evaporative cooler. Background technique [0002] In the indirect evaporative cooler, the primary air and the secondary air are separated by the heat exchange element. On the secondary air side, a water film is formed on the heat exchange wall by spraying circulating water. The secondary air and water are in direct contact for heat and moisture exchange. The temperature of the water film is maintained at the wet bulb temperature of the secondary air, and the primary air transfers heat to the secondary air through the heat exchange element and the water film to achieve the purpose of cooling. In this process, the hydrophilicity of the heat exchange wall is one of the important factors affecting the heat exchange efficiency of the indirect evaporative cooler. [0003] Metal aluminum foil is generally used as the heat ...
Claims
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IPC IPC(8): F28F3/02F28F1/10F28F13/02F28F13/18F28F21/08
Inventor 黄翔汪超夏青
Owner XI'AN POLYTECHNIC UNIVERSITY