A heat storage agent and its preparation method and application

Abstract

The invention discloses a heat storage agent and a preparation method and application thereof. The heat storage agent of the invention is in a ratio unit of 100 ml, and includes the following components: 40 ml of ethylene glycol, 50 ml of negative ion water, 5 ml of sodium metasilicate, 2 ml of silicate, 2 ml of triethanolamine, 0.2 ml of hydrochloric acid, 0.3 ml of chromium zinc, 0.2 ml of sodium nitrate, and 0.3 ml of 2-hydroxybenzoic acid; the heat storage agent not only meets the requirements of heat storage, but also meets the requirements of antifreeze, anticorrosion, and antirust, and can be filled in various heating equipment such as energy storage tanks, heaters, floor heating pipes, etc., to increase the heat storage capacity of the product and improve the heat storage rate of the product.

Description

Technical Field

[0001] The present invention relates to the field of chemical technology, and in particular to a heat storage agent and a preparation method and application thereof. Background Art

[0002] In the existing field of thermal energy storage technology, although traditional heat storage materials such as hot water can meet the heat storage needs to a certain extent, their application scope and performance are obviously limited. In particular, for heating equipment that needs to operate in extremely low temperature environments, such as outdoor energy storage tanks, heating systems, and floor heating pipes, traditional heat storage materials often face problems such as high freezing point, easy freezing, corrosion and rust to the equipment, which not only reduces the heat storage efficiency, but also shortens the service life of the equipment and increases maintenance costs. Therefore, there is an urgent need for a new type of heat storage agent with excellent antifreeze, anticorrosion, and antirust properties to effectively improve the heat storage capacity and heat storage rate of various heating equipment, reduce energy consumption, and extend the life of the equipment. Summary of the invention

[0003] The purpose of the present invention is to provide a heat storage agent and a preparation method and application thereof to address the deficiencies of the prior art, so as to solve the problems of high freezing point, easy freezing, corrosion and rust to equipment faced by traditional heat storage materials.

[0004] In a first aspect, the present invention provides a heat storage agent, which comprises the following components in a unit of 100 ml: 40 ml of ethylene glycol, 50 ml of negative ion water, 5 ml of sodium metasilicate, 2 ml of silicate, 2 ml of triethanolamine, 0.2 ml of hydrochloric acid, 0.3 ml of chromium zinc, 0.2 ml of sodium nitrate, and 0.3 ml of 2-hydroxybenzoic acid.

[0005] Furthermore, the physicochemical shape of the heat storage agent is a density of 1.10±0.05 g / cm at 20°C. 3 .

[0006] Furthermore, the specific heat capacity of the heat storage agent increases with increasing temperature.

[0007] Furthermore, the freezing point of the heat storage agent is -60°C to -10°C.

[0008] Furthermore, the boiling point of the heat storage agent is 108°C to 190°C.

[0009] In a second aspect, the present invention provides a method for preparing a heat storage agent, comprising:

[0010] The following raw materials are provided in a ratio of 100 ml: ethylene glycol 40 ml, negative ion water 50 ml, sodium metasilicate 5 ml, silicate 2 ml, triethanolamine 2 ml, hydrochloric acid 0.2 ml, chromium zinc 0.3 ml, sodium nitrate 0.2 ml, 2-hydroxybenzoic acid 0.3 ml;

[0011] The raw materials are mixed and stirred to prepare a heat storage agent.

[0012] In a third aspect, the present invention provides an application of the above-mentioned heat storage agent in the field of energy storage heating.

[0013] The beneficial effects of the present invention are as follows: the heat storage agent of the present invention has the following characteristics: high heat storage density, capable of storing a large amount of thermal energy in a smaller volume or mass; temperature stability, capable of maintaining a relatively stable temperature during the process of storing and releasing heat; reusability, performance will not significantly decrease after multiple cycles of heat absorption and release; safety, not prone to danger under normal conditions of use; non-toxic, odorless, harmless, antifreeze, anti-corrosion, and rust-proof, and can be widely used in the field of energy storage heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a flow chart of the method for preparing the heat storage agent. DETAILED DESCRIPTION

[0015] The following non-limiting embodiments can enable ordinary technicians in the field to understand the present invention more comprehensively, but do not limit the present invention in any way. It is necessary to point out that the following embodiments cannot be understood as limiting the scope of protection of the present invention. If technical personnel skilled in the art make some non-essential improvements and adjustments to the present invention based on the above-mentioned content of the present invention, they still fall within the scope of protection of the present invention.

[0016] The embodiment of the present invention provides a heat storage agent, which is a compound. The heat storage agent is a chemical material that can undergo a phase change at a specific temperature and absorb or release heat. It can store and release heat in various ways to help control the temperature of the surrounding environment or store heat energy.

[0017] In this embodiment, 100 ml is used as the unit ratio, and includes the following components: 40 ml of ethylene glycol, 50 ml of negative ion water, 5 ml of sodium metasilicate, 2 ml of silicate, 2 ml of triethanolamine, 0.2 ml of hydrochloric acid, 0.3 ml of chromium zinc, 0.2 ml of sodium nitrate, and 0.3 ml of 2-hydroxybenzoic acid.

[0018] Among them, ethylene glycol has antifreeze and heat conduction effects and needs to be mixed with negative ion water in a certain ratio. Sodium metasilicate has the highest active alkalinity and pH buffer index among inorganic electrolytes and has an anti-corrosion effect on metals. Silicate, triethanolamine, hydrochloric acid, and chromium zinc also play an anti-corrosion and descaling role, forming a protective film for metals and serving as organic anti-scaling agents. Sodium nitrate and 2-hydroxybenzoic acid are organic corrosion inhibitors.

[0019] Specifically, the physicochemical properties of the heat storage agent of the present invention are as follows: density 1.10±0.05 g / cm at 20°C 3The specific heat capacity of the heat storage agent increases with the increase of temperature.

[0020] The heat storage agent of the present invention is a new type of heat energy exchange conduction medium designed and formulated based on the fact that the existing heating equipment is generally filled with water as a heat conduction medium, which is easy to rust, corrode the equipment, and freeze and damage the equipment in winter. It is non-toxic, tasteless, harmless, antifreeze, anti-corrosion, and anti-rust, and the specific heat capacity increases with the increase of temperature; the freezing point of the heat storage agent is -60℃ to -10℃, and the boiling point of the heat storage agent is 108℃ to 190℃. It can meet the requirements of heat storage and antifreeze, anti-corrosion, and anti-rust. It can be filled in various heating equipment such as energy storage tanks, heaters, floor heating pipes, etc., to increase the heat storage capacity of the product and improve the heat storage rate of the product. Under the condition of the same power consumption, the cumulative value of the released heat increases, reducing costs and increasing efficiency, making better use of electrical energy, and improving the conversion rate of electrical energy to heat energy.

[0021] The present invention also provides a method for preparing a heat storage agent, comprising:

[0022] Step 1, with 100 ml as the ratio unit, provide the following raw materials: 40 ml of ethylene glycol, 50 ml of negative ion water, 5 ml of sodium metasilicate, 2 ml of silicate, 2 ml of triethanolamine, 0.2 ml of hydrochloric acid, 0.3 ml of chromium zinc, 0.2 ml of sodium nitrate, and 0.3 ml of 2-hydroxybenzoic acid;

[0023] Step 2: Mix and stir the raw materials to prepare a heat storage agent.

[0024] The embodiment of the present invention also provides an application of the above-mentioned heat storage agent in the field of energy storage heating. The heat storage agent can be widely used in the field of energy storage heating, taking advantage of the preferential time periods of peak and valley electricity prices and improving energy storage efficiency; effectively increasing thermal conductivity, improving thermal energy utilization, thereby saving energy and reducing energy consumption, especially in the fields of construction, industry, air conditioning, and heating, and has broad application prospects.

[0025] The above-described embodiments of the present invention do not limit the protection scope of the present invention.

Claims

1. A heat storage agent, characterized in that: The unit of 100 ml includes the following components: 40 ml of ethylene glycol, 50 ml of negative ion water, 5 ml of sodium metasilicate, 2 ml of silicate, 2 ml of triethanolamine, 0.2 ml of hydrochloric acid, 0.3 ml of chromium zinc, 0.2 ml of sodium nitrate and 0.3 ml of 2-hydroxybenzoic acid.

2. A heat storage agent according to claim 1, characterized in that: The physical and chemical form of the heat storage agent is a density of 1.10±0.05 g / cm at 20°C. 3 .

3. A heat storage agent according to claim 1, characterized in that: The specific heat capacity of the heat storage agent increases with increasing temperature.

4. A heat storage agent according to claim 1, characterized in that: The freezing point of the heat storage agent is -60°C to -10°C.

5. A heat storage agent according to claim 1, characterized in that: The boiling point of the heat storage agent is 108°C to 190°C.

6. A method for preparing a heat storage agent, characterized in that: include: The following raw materials are provided in a ratio of 100 ml: ethylene glycol 40 ml, negative ion water 50 ml, sodium metasilicate 5 ml, silicate 2 ml, triethanolamine 2 ml, hydrochloric acid 0.2 ml, chromium zinc 0.3 ml, sodium nitrate 0.2 ml, 2-hydroxybenzoic acid 0.3 ml; The raw materials are mixed and stirred to prepare a heat storage agent.

7. Use of the heat storage agent as claimed in claim 1 in the field of energy storage heating.

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