Phase-change heat storing and supplying unit

Abstract

The invention discloses a phase-change heat storing and supplying unit. The phase-change heat storing and supplying unit comprises a heating - heat storing - heat exchanging unit which is arranged independently, the heating - heat storing - heat exchanging unit comprises a heat storing tank body, phase-change materials, a heating pipe and heat exchange coils, wherein the phase-change materials are placed in the heat storing tank body, and the heating pipe and the heat exchange coils are arranged in the phase-change material; a heat exchange device is arranged outside the heat storing tank body; an outlet of the heating pipe is connected with the heat exchange coils, outlets of the heat exchange coil are connected with an inlet of the heat exchange device, and an outlet of the heat exchange device is connected with an inlet of the heating pipe; and conduction oil is placed in the heating pipe. According to the phase-change heat storing and supplying unit, the functions of input, storage and output of heat and the like can be achieved; the cost is low, and the using range of temperature parameters is wide; the phase-change heat storing and supplying unit has the characteristics that the structure is simple, modular workshop production can be achieved, transportation is convenient, and field installation is simple and easy and can be applied to multiple fields; and the phase-change materials adopted by the heat supplying unit are alcohols, are free of supercooling and precipitation phenomenon, and have stable performance, and the phase change temperature of the phase-change materials can be adjusted between 90 to 120 DEG C.

Description

technical field [0001] The invention belongs to the technical field of heat storage, and in particular relates to a phase-change heat storage and heat supply unit. Background technique [0002] There are two types of commonly used heat storage methods, namely, sensible heat storage and latent heat storage. Sensible heat storage is mainly to store heat energy through the rise or fall of the temperature of a certain material. Sensible heat storage is the one with the simplest principle, the most mature technology, the most abundant material sources and the cheapest cost among various heat storage methods. Therefore, it is also the most widely used and promoted in practice. The basic principle of latent heat storage is that when a substance changes from a solid state to a liquid state (melting), from a liquid state to a gaseous state (gasification), or directly from a solid state to a gaseous state (sublimation), it will absorb phase change heat; When the process is reversed,...

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Problems solved by technology

[0004] At present, alcohols such as xylitol, erythritol, and galactitol are most commonly used in the food field due to their high prices, and are rarely used in the industrial field

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