Nanometer refrigerant and application thereof

Abstract

The application belongs to the technical field of refrigerants, and particularly relates to a nano refrigerant and application thereof. The nano refrigerant comprises the following components in parts by weight: fluoroethane R161: 10-35 parts; tetrafluoropropene R1234YF: 30-75 parts; trifluoroiodomethane R13I1: 10-25 parts; and metal nano material: 2-5 parts. The refrigerant provided by the application is green, energy-saving and environment-friendly.

Description

Technical Field

[0001] This invention belongs to the field of refrigerant technology, specifically relating to a nano-refrigerant and its applications. Background Technology

[0002] Research on green, energy-saving, and environmentally friendly refrigerants primarily focuses on ozone layer protection as a key objective, with the development of HFC-type refrigerants being a major area of ​​research. Simultaneously, emphasis is placed on ozone layer protection and mitigating the greenhouse effect, requiring not only zero ODP (Ozone Depletion Potential) in the refrigerant but also compliance with domestic and international GWP (Global Welfare Potential).

[0003] Currently, 97% of large and extra-large water chiller units both domestically and internationally use R134 refrigerant, which is also a type of fluorinated product and belongs to the category of high-energy-consuming and high-polluting refrigerants. Although this type of product does not deplete the ozone layer and has an ODP of zero, its greenhouse gas emission index (GPI) reaches 1430, while the current domestic and international GPI emission standard is 500, making it a major culprit in global warming. Furthermore, the use of R134 (GWP: 1430) will be completely banned starting in 2029.

[0004] Therefore, it is necessary to develop green, energy-saving, and environmentally friendly refrigerants. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a nano-refrigerant and its applications. The refrigerant provided by this invention is green, energy-saving, and environmentally friendly.

[0006] The technical solution provided by this invention is as follows:

[0007] A nano-refrigerant comprising the following components in parts by weight: fluoroethane R161: 10-35 parts; tetrafluoropropylene R1234YF: 30-75 parts; trifluoroiodomethane R13I1: 10-25 parts; and metallic nanomaterials: 2-5 parts.

[0008] In the above technical solution:

[0009] R161 has high latent heat, good activity, and good thermal conductivity;

[0010] R1234YF has the same boiling point and similar glide temperature as the traditional R-134 refrigerant commonly used in large water chillers, which can improve the latent heat of vaporization of the refrigerant and improve the system operating efficiency.

[0011] R161 and R1234YF are slightly flammable gases; adding R13I1 can make them flame retardant.

[0012] Preferred components: R161: 15-35 parts; R1234YF: 35-55 parts; R13I1: 10-20 parts; Metal nanomaterials: 2-5 parts.

[0013] Preferred components: R-161: 14-30 parts; R1234YF: 30-55 parts; R13I1: 10-20 parts; Metal nanomaterials: 2-5 parts.

[0014] Preferred components: R-161: 13-35 parts; R1234YF: 40-65 parts; R13I1: 14-22 parts; Metal nanomaterials: 2-5 parts.

[0015] Preferred components: R-161: 13-17 parts; R1234YF: 30-70 parts; R13I1: 12-18 parts; Metal nanomaterials: 2-5 parts.

[0016] Preferred components: R-161: 20-25 parts; R1234YF: 50-65 parts; R13I1: 10-20 parts; Metal nanomaterials: 2-5 parts.

[0017] Preferred components: R-161: 10-15 parts; R1234YF: 65-75 parts; R13I1: 10-15 parts; Metal nanomaterials: 2-5 parts.

[0018] Preferred components: R-161: 12-15 parts; R1234YF: 55-75 parts; R13I1: 20-25 parts; Metal nanomaterials: 2-5 parts.

[0019] Preferred components: R-161: 20-30 parts; R1234YF: 55-65 parts; R13I1: 10-20 parts; Metal nanomaterials: 2-5 parts.

[0020] Specifically, the metal nanomaterial is selected from highly corrosion-resistant and wear-resistant two-dimensional vanadium carbide nanofilm materials, which can be selected from existing technologies or provided by this invention.

[0021] This invention also provides the application of nano-refrigerants as a replacement for R-134 refrigerant.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. The refrigerant provided by this invention has an ozone layer depletion potential (ODP) of zero and a greenhouse gas emission potential (GWP) of 12, which is one-one-twentieth of that of the traditional refrigerant R134. For example, a large chiller unit with a capacity of 1000 kW / H, operating for 3000 hours per year, can reduce carbon emissions by 360 tons per year by comparing the greenhouse gases of the new and old refrigerants.

[0024] 2. This invention replaces R-134 refrigerant in traditional large-scale chiller units (screw chillers, centrifugal chillers) with the energy consumption of the equipment, reducing energy consumption by more than 15%. For example, a 1000kW / H large-scale chiller unit that operates for 3000 hours per year consumes 3 million kWh of electricity per year. With a 15% energy saving, it saves 450,000 kWh of electricity.

[0025] 3. The product of this invention contains an additive of highly corrosion-resistant and wear-resistant nanomaterials. After the compressor of the refrigeration equipment is running, the compressor tank absorbs the nanoparticles, which increases the wear resistance of the compressor tank by 30% and extends the service life of the compressor by more than 30%.

[0026] 4. The refrigerant provided by this invention can directly replace R-134 in large-scale industrial and commercial air conditioning chiller units. Due to its large latent heat of vaporization, it cools down faster per unit time, resulting in high refrigeration efficiency. Data from three years and four months of field application in large screw chiller units of Hubei Grand Theatre Co., Ltd. has proven that it has good energy-saving effect. The average energy saving in large screw chiller units using R-134 as refrigerant in industrial and commercial air conditioning equipment reaches more than 17%.

[0027] 5. Trifluoroiodomethane exhibits superior flame retardancy and a lower GWP value. Laboratory tests conducted over two years and six months, involving 25 ignition cycles, have confirmed this. Furthermore, ignition point, flash point, and toxicity tests show an auto-ignition point of 685 degrees Celsius, demonstrating its strong flame retardancy. Therefore, the refrigerant provided by this invention is non-flammable, non-toxic, and has a flash point of 100 degrees Celsius (closed cup). It does not deplete the ozone layer and also has an extremely low greenhouse effect.

[0028] 6. The energy-saving refrigerant for industrial and commercial air conditioning chillers provided by this invention has a high unit cooling efficiency, so its filling amount is 75% of R-134.

[0029] 7. The refrigerant provided by this invention has a cooling capacity that is more than 5% higher than that of R-134, which can allow the compressor to unload earlier. At the same time, the refrigerant provided by this invention is a mixed refrigerant with a smaller average molecular weight than R-134, better flow performance, and lower delivery pressure, which reduces the working pressure of the compressor. Both early unloading and reduced working pressure can effectively extend the service life of the compressor. Attached Figure Description

[0030] Figure 1 This is a flowchart of the preparation process of the refrigerant provided by the present invention. Detailed Implementation

[0031] The principles and features of the present invention are described below. The embodiments given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0032] Unless otherwise specified, the test methods used in the embodiments are conventional methods; unless otherwise specified, the materials and reagents used are commercially available.

[0033] Example 1

[0034] A nano-energy-saving and environmentally friendly refrigerant that can replace R-134 is prepared by fully mixing the following raw materials in parts by weight: R-161: 10 parts; R1234YF: 65 parts; R13I1: 20 parts; metal nanomaterials: 5 parts. The preparation method is as follows:

[0035] S1. The purity of the three raw materials was tested using an Agilent colorimeter to ensure that their purity reached 99.96% of the refrigerant grade.

[0036] S2. Connect the new fully automatic mixing tank;

[0037] S3. Vacuum the new fully automatic mixing tank to achieve a negative pressure state;

[0038] S4. Add the qualified raw materials to the new fully automatic mixing tank according to the weight ratio;

[0039] S5. Start the new fully automatic mixing device and stir for three hours;

[0040] S6. After stirring for three hours, the finished product, i.e. the mixed refrigerant, is tested to check the accuracy of the weight ratio of each component.

[0041] S7. After the product is stirred in the mixing device for three hours, it is stabilized for three hours and then sampled and tested again.

[0042] S8. Connect the fully automatic dispensing machine at the lower end of the mixing device to dispense the finished product.

[0043] The process can be referenced. Figure 1 .

[0044] Example 2

[0045] A nano-energy-saving and environmentally friendly refrigerant that can replace R-134 is made by fully mixing the following raw materials in parts by weight: R-161: 20 parts; R1234YF: 45 parts; R13I1: 20 parts; metal nanomaterials: 5 parts. Its preparation method is basically the same as that in Example 1.

[0046] Example 3

[0047] A nano-energy-saving and environmentally friendly refrigerant that can replace R-134 is made by fully mixing the following raw materials in parts by weight: R-161: 20 parts; R1234YF: 50 parts; R13I1: 25 parts; metal nanomaterials: 5 parts. The preparation method is basically the same as in Example 1.

[0048] Example 4

[0049] A nano-energy-saving and environmentally friendly refrigerant that can replace R-134 is prepared by fully mixing the following raw materials in parts by weight: R-161: 25 parts; R1234YF: 50 parts; R13I1: 20 parts; metal nanomaterials: 5 parts. The preparation method is basically the same as in Example 1.

[0050] Example 5

[0051] A nano-energy-saving and environmentally friendly refrigerant that can replace R-134 is made by fully mixing the following raw materials in parts by weight: R-161: 25 parts; R1234YF: 45 parts; R13I1: 25 parts; metal nanomaterials: 5 parts. The preparation method is basically the same as in Example 1.

[0052] Example 6

[0053] A nano-energy-saving and environmentally friendly refrigerant that can replace R-134 is made by fully mixing the following raw materials in parts by weight: R-161: 35 parts; R1234YF: 40 parts; R13I1: 20 parts; metal nanomaterials: 5 parts. Its preparation method is basically the same as that in Example 1.

[0054] Example 7

[0055] A nano-energy-saving and environmentally friendly refrigerant that can replace R-134 is made by fully mixing the following raw materials in parts by weight: R-161: 35 parts; R1234YF: 40 parts; R13I1: 22 parts; metal nanomaterials: 3 parts. Its preparation method is basically the same as that in Example 1.

[0056] Example 8

[0057] A nano-energy-saving and environmentally friendly refrigerant that can replace R-134 is prepared by fully mixing the following raw materials in parts by weight: R-161: 35 parts; R1234YF: 40 parts; R13I1: 23 parts; metal nanomaterials: 2 parts. The preparation method is basically the same as in Example 1.

[0058] Performance testing:

[0059] Comparative Example 1 is R-134

[0060] The results of the various performance tests are shown in the table below:

[0061]

[0062]

[0063] Example of effect

[0064] The Hubei Theater Co., Ltd. conducted an energy consumption comparison of two chiller units (using the refrigerants prepared in Examples 1 to 8) for a total of 1215 working days. The energy saving rate was calculated by collecting daily data by computer. The compressors of Unit 1 and Unit 2 were working normally. The specific energy saving rate calculation method is as follows.

[0065]

[0066] Example 9

[0067] The preparation method of metal nanomaterials includes the following steps:

[0068] The two-dimensional transition metal carbide nanofilm was obtained by etching V3AlC2 with a hydrofluoric acid / hydrochloric acid mixed solution to remove the interlayer Al elements. The specific preparation method is as follows: 0.8 g of V3AlC2 powder (30 mesh) was added to 50 mL of hydrofluoric acid / hydrochloric acid mixed solution (volume ratio 1:4), and reacted at 95 °C for 8 h. After the reaction was complete, the solution was washed and purified several times with a mixture of ultrapure water, ethanol, and acetone (volume ratio 2:1) until the solution was neutral. After the precipitate was thoroughly dried, the two-dimensional vanadium carbide thin film material was obtained.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A nano-refrigerant, characterized in that, The composition includes the following components in parts by weight: R-161: 20-25 parts; R1234YF: 50-65 parts; R13I1: 10-20 parts; and metal nanomaterials: 2-5 parts, wherein the metal nanomaterials are selected from highly corrosion-resistant and wear-resistant two-dimensional vanadium carbide nanofilm materials.

2. A nano-refrigerant, characterized in that, The composition includes the following components in parts by weight: R-161: 10-15 parts; R1234YF: 65-75 parts; R13I1: 10-15 parts; metal nanomaterials: 2-5 parts, wherein the metal nanomaterials are selected from highly corrosion-resistant and wear-resistant two-dimensional vanadium carbide nanofilm materials.

3. A nano-refrigerant, characterized in that, The composition includes the following components in parts by weight: R-161: 12-15 parts; R1234YF: 55-75 parts; R13I1: 20-25 parts; and metal nanomaterials: 2-5 parts, wherein the metal nanomaterials are selected from highly corrosion-resistant and wear-resistant two-dimensional vanadium carbide nanofilm materials.

4. A nano-refrigerant, characterized in that, The composition includes the following components in parts by weight: R-161: 20-30 parts; R1234YF: 55-65 parts; R13I1: 10-20 parts; and metal nanomaterials: 2-5 parts, wherein the metal nanomaterials are selected from highly corrosion-resistant and wear-resistant two-dimensional vanadium carbide nanofilm materials.

5. An application of the nano-refrigerant according to any one of claims 1 to 4, characterized in that: Used to replace R-134 refrigerant.

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