阅读说明：本技术 具有自动诱导结晶的相变储能箱及其应用 (Phase change energy storage box with automatic induced crystallization and application thereof ) 是由 李建强 王会 郭立江 吴刘 于 2019-10-08 设计创作，主要内容包括：一种具有自动诱导结晶的相变储能箱及其应用,该相变储能箱包括：箱体,其上设有相变材料入口和相变材料出口；成核剂存储盒,其设置在箱体内部侧壁上,用于为相变材料提供成核剂；换热盘管,其设置在箱体内部且设有换热进口和换热出口；相变材料,其填充在箱体内部,用于储存相变能；测温装置,用于监测相变材料的温度；以及控制装置,其通过测温装置监测到的温度从而控制成核剂存储盒释放成核剂。本发明的自动诱导结晶的相变储能箱,通过添加成核剂诱导结晶,改善相变材料过冷度问题,提高成核速率,有效的提高了结晶效率,解决材料相变后储存的热量不能及时释放的问题,适合大规模工业化生产的需要。(a phase change energy storage box with automatic induced crystallization and application thereof are provided, the phase change energy storage box comprises: the box body is provided with a phase-change material inlet and a phase-change material outlet; the nucleating agent storage box is arranged on the side wall inside the box body and is used for providing nucleating agent for the phase-change material; the heat exchange coil is arranged in the box body and is provided with a heat exchange inlet and a heat exchange outlet; the phase change material is filled in the box body and used for storing phase change energy; the temperature measuring device is used for monitoring the temperature of the phase-change material; and the control device controls the nucleating agent storage box to release the nucleating agent through the temperature monitored by the temperature measuring device. According to the phase change energy storage tank capable of automatically inducing crystallization, the nucleating agent is added to induce crystallization, so that the problem of supercooling degree of the phase change material is solved, the nucleation rate is increased, the crystallization efficiency is effectively improved, the problem that the heat stored after the phase change of the material cannot be released in time is solved, and the phase change energy storage tank is suitable for the requirement of large-scale industrial production.)

1. A phase change energy storage tank with self-induced crystallization, comprising:

The box body is provided with a phase-change material inlet and a phase-change material outlet;

the nucleating agent storage box is arranged on the side wall inside the box body and is used for providing nucleating agent for the phase-change material;

The heat exchange coil is arranged in the box body and is provided with a heat exchange inlet and a heat exchange outlet, and the heat exchange medium in the heat exchange coil transfers the energy in the box body to the outside of the box body;

The phase change material is filled in the box body and used for storing phase change energy;

The temperature measuring device is used for monitoring the temperature of the phase-change material; and

And the control device controls the nucleating agent storage box to release the nucleating agent through the temperature monitored by the temperature measuring device.

2. The phase change energy storage tank of claim 1,

Nucleating agent storage box is through pivot and box internal connection, and controlling means makes nucleating agent storage box release nucleating agent through control pivot autogiration.

3. The phase change energy storage tank of claim 1,

the nucleating agent storage box and the rotating shaft are subjected to antiseptic treatment.

4. The phase change energy storage tank of claim 1,

The temperature measuring devices are respectively arranged at the top, the middle and the bottom of the interior of the box body;

The temperature measuring device comprises a thermocouple.

5. the phase change energy storage tank of claim 1,

the heat exchange medium comprises water or heat transfer oil.

6. The phase change energy storage tank of claim 1,

The phase-change material inlet is arranged at the top of the box body;

the phase-change material outlet is arranged at the bottom of the box body.

7. the phase change energy storage tank of claim 1,

the phase change material comprises an inorganic phase change material.

8. The phase change energy storage tank as claimed in claim 7,

The inorganic phase-change material comprises sodium acetate trihydrate, magnesium nitrate hexahydrate and calcium chloride hexahydrate.

9. the phase change energy storage tank of claim 1,

The phase change energy storage box comprises a heat insulation layer with a heat insulation effect, and the heat insulation layer is arranged outside the box body.

10. Use of a phase change energy storage tank according to any of claims 1-9 in the field of phase change energy storage.

Technical Field

The invention relates to the field of phase change energy storage, in particular to a phase change energy storage box with automatic induced crystallization and application thereof.

background

the phenomenon in which the liquid temperature is lower than the freezing point but is not solidified or crystallized is called a supercooling phenomenon. The phenomenon usually exists in inorganic hydrated salt phase-change energy storage materials, the discharge performance of the stored heat of the materials is influenced, and if the materials are excessively cooled seriously, the stored heat cannot be released in time.

Supercooled liquid is unstable, and crystallization can be induced by only adding a small amount of crystals of the substance, and the temperature of supercooled liquid is raised back to the freezing point. Based on the principle, the invention can automatically induce the phase change energy storage material to crystallize, solves the problem that the material cannot be crystallized when reaching a certain temperature due to the supercooling degree, and improves the energy storage and heat exchange efficiency of the phase change energy storage box.

disclosure of Invention

It is therefore one of the primary objectives of the present invention to provide a phase change energy storage tank with auto-induced crystallization and its application, so as to at least partially solve at least one of the above technical problems.

To achieve the above object, as one aspect of the present invention, there is provided a phase change energy storage tank with auto-induced crystallization, comprising:

The box body is provided with a phase-change material inlet and a phase-change material outlet;

the nucleating agent storage box is arranged on the side wall inside the box body and is used for providing nucleating agent for the phase-change material;

The heat exchange coil is arranged in the box body and is provided with a heat exchange inlet and a heat exchange outlet, and the heat exchange medium in the heat exchange coil transfers the energy in the box body to the outside of the box body;

the phase change material is filled in the box body and used for storing phase change energy;

The temperature measuring device is used for monitoring the temperature of the phase-change material; and

and the control device controls the nucleating agent storage box to release the nucleating agent through the temperature monitored by the temperature measuring device.

As another aspect of the invention, the invention also provides an application of the phase change energy storage box in the field of phase change energy storage.

based on the technical scheme, the phase change energy storage box with the automatic induced crystallization function and the application thereof have at least one of the following advantages compared with the prior art:

According to the phase change energy storage tank capable of automatically inducing crystallization, the nucleating agent is added to induce crystallization, so that the problem of supercooling degree of the phase change material is solved, the nucleation rate is increased, the crystallization efficiency is effectively improved, the problem that the heat stored after the phase change of the material cannot be released in time is solved, and the phase change energy storage tank is suitable for the requirement of large-scale industrial production.

drawings

Fig. 1 is a schematic structural diagram of a phase change energy storage box for auto-induced crystallization according to embodiment 1 of the present invention.

description of reference numerals:

1. A control device; 2. a nucleator storage box; 3. a rotating shaft; 4. a box body; 5. a heat-insulating layer; 6. a phase change material; 7. a heat exchange coil; 8. a heat exchange outlet; 9. a heat exchange inlet; 10. a phase change material inlet; 11 a phase change material outlet; 12. and a thermocouple.

Detailed Description

in order that the objects, technical solutions and advantages of the present invention will become more apparent, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the following specific embodiments.

the invention discloses a phase change energy storage box with automatic induced crystallization, which comprises:

The box body is provided with a phase-change material inlet and a phase-change material outlet;

The nucleating agent storage box is arranged on the side wall inside the box body and is used for providing nucleating agent for the phase-change material;

The heat exchange coil is arranged in the box body and is provided with a heat exchange inlet and a heat exchange outlet, and the heat exchange medium in the heat exchange coil transfers the energy in the box body to the outside of the box body;

The phase change material is filled in the box body and used for storing phase change energy;

The temperature measuring device is used for monitoring the temperature of the phase-change material; and

and the control device controls the nucleating agent storage box to release the nucleating agent through the temperature monitored by the temperature measuring device.

Wherein, nucleating agent storage box is through pivot and box internal connection, and controlling means makes nucleating agent storage box release nucleating agent through control pivot autogiration.

wherein, the nucleating agent storage box and the rotating shaft are both subjected to antiseptic treatment.

The temperature measuring devices are respectively arranged at the top, the middle and the bottom of the interior of the box body;

The temperature measuring device comprises a thermocouple.

Wherein the heat exchange medium comprises water or heat transfer oil.

The phase change material inlet is arranged at the top of the box body;

the phase-change material outlet is arranged at the bottom of the box body.

wherein the phase change material comprises an inorganic phase change material.

Wherein the inorganic phase-change material comprises sodium acetate trihydrate, magnesium nitrate hexahydrate and calcium chloride hexahydrate.

The phase change energy storage box comprises a heat insulation layer with a heat insulation effect, and the heat insulation layer is arranged outside the box body.

The invention also discloses an application of the phase change energy storage box in the field of phase change energy storage.

In an exemplary embodiment, the phase change energy storage box with the automatic induced crystallization function comprises a box body, wherein a nucleating agent storage box is arranged on the right side wall of the inner part of the box body; the nucleating agent storage box is internally provided with the nucleating agent and is connected with the temperature control system through a rotating shaft; the heat exchange coil is uniformly arranged in the box body, the heat insulation layer is arranged outside the box body, and the phase change material is filled in the box body; the invention can solve the problem that the phase-change material in the phase-change energy storage box can not be automatically crystallized due to supercooling after reaching the phase-change temperature. The addition of the nucleating agent can induce the phase change energy storage material to crystallize rapidly, and is one of effective and economical measures for reducing the supercooling degree of the material.

In another exemplary embodiment, the present invention provides a phase change energy storage tank with self-induced crystallization that is effective to induce crystallization upon reaching a phase change temperature such that it releases a large amount of latent heat at a desired time. The phase change energy storage box with the automatic induced crystallization comprises a box body, a control device is arranged on one side of the upper portion of the outer portion of the box body, the control device can control the rotating shaft to rotate automatically, the rotating shaft is connected with a nucleating agent storage box, sufficient nucleating agents are arranged in the nucleating agent storage box, the heat exchange coil pipe is evenly distributed in the box body, heat exchange media in the heat exchange coil pipe are imported and exported through heat exchange to transfer energy to the outside, phase change materials are filled in the box body, the top of the box body is provided with an inlet of the phase change materials, and the lower right side of.

During the use, controlling means monitors the temperature situation of inside material through built-in temperature element, and when reaching predetermined phase transition temperature, controlling means transmission disturbance makes the pivot of connecting nucleating agent storage box rotatory downwards, and the nucleating agent in the nucleating agent storage box groove contacts with phase transition material and takes place the effect, and the induced phase transition material crystallization.

wherein, the thermocouples are distributed on the upper part, the middle part and the lower part of the energy storage box;

wherein, the nucleating agent storage box and the rotating shaft both need to be subjected to anticorrosive treatment, and the nucleating agent storage box mainly plays a role in corrosion prevention.

wherein, the box outside parcel heat preservation mainly plays the effect that prevents to take place the heat exchange with the external world.

The heat exchange medium is a liquid carrier, such as water, heat transfer oil, and the like, but is not limited thereto.

wherein, the phase-change material is an inorganic phase-change material; aiming at the inorganic phase-change material, the material has the effect of automatically inducing crystallization and can effectively solve the supercooling phenomenon.

the technical solution of the present invention is further illustrated by the following specific embodiments in conjunction with the accompanying drawings. It should be noted that the following specific examples are given by way of illustration only and the scope of the present invention is not limited thereto.

As shown in fig. 1, a phase change energy storage box with automatic induced crystallization, includes box 4, outside top one side of box 4 is equipped with controlling means 1, controlling means 1 links to each other with thermocouple 12, and the automatic rotation of controlling means 1 steerable pivot 3, pivot 3 links to each other with nucleating agent storage box 2, and nucleating agent storage box 2 embeds sufficient nucleating agent, the inside evenly distributed heat exchange coil 7 of box 4, and heat exchange medium passes through heat transfer import 9, heat transfer export 8 in the heat exchange coil 7 with energy transfer to the external world, and the inside phase change material 6 that fills of box, the phase change roof portion is equipped with phase change material import 10, and the right side bottom is equipped with phase change material export 11. The entire connection is shown in fig. 1.

The phase change energy storage material adopted in the embodiment is sodium acetate (hydrated salt phase change energy storage material), the phase change temperature is 58 ℃, the nucleating agent is disodium hydrogen phosphate dodecahydrate, and the heat exchange medium is water;

the specific heat storage process and the heat release process are as follows: the heat storage process: the electric energy in valley electricity is utilized to heat carrier water to enable the carrier water to load heat, the carrier water flows in from the heat exchange inlet 9 and flows through the heat exchange coil 7, heat exchange between the heat flow carrier and the phase change energy storage material 6 around the heat exchange coil 7 is achieved through the heat exchange coil 7, and the heat flow carrier water flows out from the heat exchange outlet 8. After sufficient time, sensible heat in the hot fluid water is gradually transferred to the phase change energy storage material to enable the temperature of the phase change energy storage material to rise until the phase change temperature is reached to trigger the phase change energy storage material to generate phase change, and the storage of the sensible heat and the latent heat is completed.

the heat release process: the cold carrier flows in from the heat exchange inlet 9 and flows through the heat exchange coil 7, and the cold fluid exchanges energy with the phase-change material 6 through the heat exchange coil 7, so that the temperature of the cold fluid is reduced. At the beginning, the phase change material 6 releases its sensible heat part first, and when the temperature gradually decreases to reach the phase change temperature point, the phase change material 6 cannot release a large amount of heat due to the supercooling phenomenon. At this time, the temperature signal monitored by the thermocouple 12 is transmitted to the control device, and when the temperature signal reaches the phase transition temperature point, the nucleating agent storage box 2 is opened to release a small amount of nucleating agent, trigger the nucleating agent to rapidly crystallize to generate phase transition, and release a large amount of heat. The cold fluid flows out from a medium outlet 8 through the heat-exchange coil 7 to a heating user.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.