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A Heat Transfer Element for Thinning Liquid Film Thickness of Regenerative Condensing Heat Exchanger

A technology of condensing heat exchanger and liquid film thickness, which is applied in the direction of laminated components, heat transfer modification, air heater, etc., can solve the problem of no matching heat transfer components, etc., and achieve faster drainage rate and thinner thickness , The effect of increasing the drainage speed

Active Publication Date: 2021-02-19
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problem that there is no matching heat transfer element for the regenerative condensation heat exchanger, the present invention provides a heat transfer element for thinning the liquid film thickness of the regenerative condensation heat exchanger

Method used

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  • A Heat Transfer Element for Thinning Liquid Film Thickness of Regenerative Condensing Heat Exchanger
  • A Heat Transfer Element for Thinning Liquid Film Thickness of Regenerative Condensing Heat Exchanger
  • A Heat Transfer Element for Thinning Liquid Film Thickness of Regenerative Condensing Heat Exchanger

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings.

[0039] Such as Figure 1 to Figure 3 As shown, the present invention provides a heat transfer element for thinning the liquid film thickness of a regenerative condensing heat exchanger, including a first corrugated plate 1 and a second corrugated plate 2, such as figure 1 and figure 2 shown. The first corrugated plate 1 is composed of a series of inverted double herringbone corrugated channels 101 with a corrugation inclination of 30° to 50°, and a first vertical channel with a single crest and a single trough is added at the symmetry of the inverted single herringbone corrugated channel. The trapezoidal corrugated channel 102 and the first vertical plate 103 are added at the junction of two adjacent inverted double herringbone corrugated channels. The wave height of the first vertical trapezoidal corrugated channel 102 is 10 mm to 25 mm, the width of the first ver...

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Abstract

The invention discloses a heat transfer element for reducing the liquid film thickness of a regenerative condensing heat exchanger. The heat transfer element is combined with two first corrugated plates and a second corrugated plate of composite structure. The first corrugated plate has inverted double herringbone corrugated channels, the first vertical trapezoidal corrugated channel and the first vertical plate; the second corrugated plate has double herringbone corrugated channels, the second vertical trapezoidal corrugated channel and the second Vertical slab. The first corrugated plate and the second corrugated plate are stacked to form a condensation heat transfer channel composed of two different heat transfer channel units. When condensation occurs, the first corrugated plate and the second corrugated plate accelerate the draining speed of the condensate at the same time, which reduces the thickness of the condensate film and further improves the condensation heat transfer capacity of the regenerative condensing heat exchanger. The invention can accelerate the discharge of the condensate, reduce the thickness of the condensate film, strengthen the condensation heat transfer, and further improve the comprehensive performance of the regenerative condensation heat exchanger.

Description

technical field [0001] The invention belongs to the technical field of heat exchanger plates, and in particular relates to a heat transfer element used for reducing the liquid film thickness of a regenerative condensation heat exchanger. Background technique [0002] The flue gas produced by the combustion of gas-fired boilers has high water vapor content (close to 20% volume fraction), high heat (containing a large amount of latent heat) and SO x , NO x , CO 2 , CO and fly ash and other pollutants are low. Installing a condensing heat exchanger at the end of the gas boiler will not cause serious low-temperature corrosion problems, and can recover a large amount of moisture and waste heat in the flue gas. Therefore, condensing heat exchangers have been widely used in gas boiler waste heat recovery renovation projects. [0003] At present, finned tube condensing heat exchangers are generally used as the main equipment for flue gas cooling and water intake, but finned tube...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H8/00F24H9/00F28F13/04F28F3/02
CPCF24H8/00F24H9/00F28F3/02F28F13/04Y02B30/00
Inventor 王利民何洋李德超唐春丽车得福
Owner XI AN JIAOTONG UNIV
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