Heat accumulating type pure air heating system

Abstract

The invention discloses a heat accumulating type pure air heating system. The heat accumulating type pure air heating system comprises six heaters arranged in parallel, first air inlet pipelines and an air outlet pipeline, wherein the effective power of each heater is about 9 MW, the heaters are FD07 air tunnel low-line metal sheet heat accumulation heaters, the first air inlet pipelines are connected to the first air inlet ends of the heaters to supply cold air to the heaters, each heater corresponds to one first air inlet pipeline, and the air outlet pipeline is connected to the air outlet ends of the six heaters and mixes and outputs hot air output by the six heaters. The six heaters are arranged in parallel, the effective power of each heater is 9 MW, and the heaters are FD07 air tunnel low-line metal sheet heat accumulation heaters, so that the heating system is formed, and the effective power of the heating system can reach 50 MW.

Description

technical field [0001] The invention relates to the field of heating equipment, in particular to a regenerative air heating system. Background technique [0002] Although many new heating technologies have emerged in recent years, three heating methods are generally used in airflow heating: [0003] (1) Heat exchange heating method: The heat of the heating element is transferred to the air flow by means of forced convection as the main heat exchange method. [0004] The heat exchange heating method is divided into two types: instant heat type and heat storage type. Instantaneous heaters generally do not work when there is no air flow, and when there is air flow, other types of energy are converted into heat energy and transferred to the air flow. During operation, the balance between input energy and output energy must always be maintained, and it can usually run continuously; Regenerative heaters generally store other types of energy in the form of heat energy in the heat...

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Problems solved by technology

[0011] (1) If a single large heater is used, the inner diameter of the shell is about Φ1.5m, the shell thickness is about 70mm, and the material is heat-resistant low-alloy steel. After investigating the domestic processing manufacturers, the heater shell and the shell connecting flange The manufacturing and processing of high temperature and high pressure stop valve (DN350) and flue valve (DN500) are difficult, and technical research is required, the investment is high and risky, and the cycle is unpredictable;

[0012] (2) The large oil volume and air volume of the single large heater have high requirements for ignition and combustion technology, which need to be developed and are not easy to realize

[0013] Therefore, at present, there is no regenerative heater with an effective power of 50MW in China.

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