Crossing arrangement method for gas boiler smoke latent heat recovery device

Abstract

The invention provides a crossing arrangement method for a gas boiler smoke latent heat recovery device, belongs to the technical field of the design of gas boiler tail heated faces and particularly relates to a crossing arrangement method for a gas boiler smoke latent heat recovery device. The problem that a traditional thermodynamic calculation method is not suitable for the design of a boiler tail heated face latent heat recovery device is solved. The latent heat recovery device comprises a plurality of condensers and a plurality of air pre-heaters. The smoke side, air side and working medium side of the latent heat recovery device are measured, performance curves of the multiple condensers and the multiple air pre-heaters are drawn according to measured data, the area formed by the performance curves of all the condensers and the air pre-heaters is the arrangement area of the gas boiler tail heated face, and the condenser and air pre-heater arrangement form corresponding to the comprehensive performance curve of the maximum comprehensive performance value is selected as the arrangement structure of the latent heat recovery device. The crossing arrangement method is mainly usedfor arrangement design of the gas boiler tail heated face.

Description

technical field [0001] The invention belongs to the technical field of design of a heating surface at the rear of a gas boiler, and in particular relates to a cross arrangement method of latent heat recovery devices for flue gas of a gas boiler. Background technique [0002] In order to recover the latent heat of vaporization in the flue gas generated by gas combustion, natural gas boilers have generally been equipped with condensers and air preheaters in recent years. However, due to the short use time of condensing boilers in my country, mature design concepts have not yet been fully formed. This is reflected in the fact that so far, there is no design method or standard for condensing boilers in my country. In particular, there is no clear method in the industry on how to arrange the heating surface at the tail of the condensing boiler. The main reason is that when the condenser and the air preheater are arranged crosswise, Because the water vapor releases the latent heat o...

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Problems solved by technology

[0002] In order to recover the latent heat of vaporization in the flue gas generated by gas combustion, natural gas boilers have generally been equipped with condensers and air preheaters in recent years. However, due to the short use time of condensing boilers in my country, mature design concepts have not yet been fully formed. This is reflected in the fact that so far, there is no design method or standard for condensing boilers in my country. In particular, there is no clear method in the industry on how to arrange the heating surface at the tail of the condensing boiler. The main reason is that when the condenser and the air preheater are arranged crosswise, Due to the latent heat of vaporization released by water vapor, the water vapor turns into liquid water, so the traditional thermal calculation method is no longer suitable for the design of such waste heat recovery devices

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