Shell-tube-type phase-change energy storage heat exchanger

Abstract

The invention discloses a shell-tube-type phase-change energy storage heat exchanger. The shell-tube-type phase-change energy storage heat exchanger comprises a heat exchanger shell cylinder, a heat source fluid inlet and a heat source fluid outlet, wherein the heat source fluid inlet and the heat source fluid outlet are formed in the two sides of the heat exchanger shell cylinder; the upper sidewall and the lower side wall of the heat exchanger shell cylinder are provided with a phase-change material filling port and a phase-change material discharging port correspondingly; and a plurality groups of heat exchange round tubes of which the two ends communicate with the heat source fluid inlet and the heat source fluid outlet correspondingly are arranged in the heat exchanger shell cylinder, and fins are evenly distributed on the outer wall of each heat exchange round tube. According to the shell-tube-type phase-change energy storage heat exchanger, by designing arrangement of the heatexchange round tubes, the heat exchanger fully adapts to the flowing and heat exchanging characteristics in the heat exchange process of a phase-change material, a temperature field and a velocity field achieve the synergistic effect, the heat exchange uniformity is improved, and the heat exchange rate is increased; furthermore, by additionally arranging the fins, the heat exchange area of the heat exchanger is effectively increased, the heat exchange coefficient is increased, and convection heat exchange is enhanced; in addition, by designing arrangement of the fins, the flow guiding effect of the fins is fully utilized, mutual disturbance among multiple tube bundles is enhanced, convergency and circulation of a liquid-phase area are promoted, the heat exchange rate is increased, and theheat exchange efficiency is improved.

Description

technical field [0001] The invention belongs to the field of strengthening heating equipment, and in particular relates to a shell-and-tube type phase change energy storage heat exchanger. technical background [0002] Energy is the driving force for the development of the entire society and economic growth. In the past two hundred years, fossil energy has always served as the main supplier of energy demand in human society, but there are also many shortcomings in the process of utilization, such as limited reserves and uneven distribution. and environmental pollution. According to the statistics of relevant departments, since 2011 in my country, the proportion of coal energy in the overall energy has been declining year by year, while the proportion of wind, nuclear, solar energy and other emerging energy has shown an overall upward trend. However, in the process of using alternative clean energy, there are often conflicts of time and space mismatch, such as the intermitte...

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Problems solved by technology

[0004] Aiming at the problems of bulky volume and low heat exchange efficiency of current phase change heat storage heat exchangers, the purpose of the present invention is to provide a more compact and efficient shell-and-tube phase change heat storage heat exchanger

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