CN101974313B - Phase change thermal storage material and manufacturing method thereof - Google Patents
Phase change thermal storage material and manufacturing method thereof Download PDFInfo
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- CN101974313B CN101974313B CN 201010290994 CN201010290994A CN101974313B CN 101974313 B CN101974313 B CN 101974313B CN 201010290994 CN201010290994 CN 201010290994 CN 201010290994 A CN201010290994 A CN 201010290994A CN 101974313 B CN101974313 B CN 101974313B
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Abstract
The invention discloses a phase change thermal storage material and a manufacturing method thereof. The material is formed by the way that 40-45wt% of silicon oxide, 9-11wt% of aluminium oxide, 0.06-0.3wt% of ferric oxide, 0.2-0.5wt% of calcium oxide, 0.05-0.4wt% of magnesium oxide, 3-4wt% of potassium oxide, 3-5wt% of sodium oxide and 6-11wt% of zinc oxide are uniformly ground and then are uniformly mixed with 22.8-38.69wt% of water.
Description
Technical field
The present invention relates to a kind of phase change heat storage material and manufacture method thereof, be specifically related to a kind of inorganic-phase variable heat-storing material and manufacture method thereof.
Background technology
Heat storage technology is to improve heat utilization rate, solve the important technology when using heat asynchronous with heat supply, can satisfy the important step in the field of various energy resources needs, heat storage technology is widely used, not only can be used for waste heat recovery, air-conditioning accumulation of heat, power peak regulation, and can be used for the discontinuous energy (wind energy, sun power etc.) and turn to and continue energy aspect.Use this technology capable of reducing energy consumption, save working cost, realize the efficient and rational utilization of energy.
Phase change material has the ability that changes its physical condition in certain temperature range.Take solid-liquid phase change as example, when being heated to temperature of fusion, just produce the phase transformation from solid-state to liquid state, in the process of fusing, the phase change material absorption also stores a large amount of latent heat; When phase change material cooled off, the heat of storage will be dispersed in the environment in certain temperature range and go, and carries out from liquid state to solid-state reverse transformation.In these two kinds of phase transition process, energy stored or that discharge is called latent heat of phase change.When physical condition changed, the temperature of material self almost remained unchanged before phase transformation is finished, and formed a wide temperature platform, although temperature-resistant, the latent heat that absorbs or discharge is quite large.
Existing heat accumulating phase change material can be divided into organic phase change material and inorganic phase-changing material.The classification phase change material of phase change material mainly comprises inorganic phase-changing material, organic phase change material and composite phase-change three classes.Wherein, the organic phase transformation mainly comprises paraffin, acetic acid and other organism; The organic phase change material stable in properties did not almost have the cold-peace problem of phase separation, but its shortcoming is also fairly obvious, and namely latent heat of phase change is low, and material density is less, caused thus organic phase-change heat-storing material unit volume heat storage capacity little; The mineral-type phase change material mainly contains crystalline hydrate salt, molten salts, metal or alloy class etc., the inorganic-phase variable heat-storing material has higher unit volume heat and good thermal conductivity, but existing inorganic phase-changing material has following shortcoming: produced easily cold-peace and be separated.If can solve the problem that cold-peace is separated by adding additive, then the inorganic-phase variable heat-storing material has fairly obvious advantage, and the accumulation of heat related industries also therefore can be developed.
Heat accumulating phase change material specifically is applied on the product, should possesses following condition: (1) unit volume is little, and accumulation of energy wants many; (2) thermal conductivity wants high, and in order to improve the molten amount of accumulation of heat, heat storage material is larger than important; (3) if heat-accumulating process pressure is large, manufacturing expense is high with regard to corresponding meeting, so the phase-transition heat-storage course pressure is low; (4) in order to improve rate of heat exchange, it is large that thermal conductivity is wanted; (5) in the phase transition process, avoid cold superheating phenomenon to occur; (6) such as the phase-changing energy-storing of area use on a large scale, occur the phase change process between liquid and the solid, therefore hinder heat exchange; (7) if the energy storage materials of phase change coefficient of expansion is large, then need firm shell, therefore can cause manufacturing expense to improve, so the material coefficient of expansion will reduce; (8) can not use inflammable substance and virose raw material; (9) if chemical reaction velocity is fast during high temperature, can occur the object corrosion phenomenon, thus the chemical property of this phase change material will be stablized and phase transition process in the temperature that the changes temperature when using want consistent.
Satisfy the material of above-mentioned whole requirements seldom in the phase change material of at present exploitation, the present invention aims to provide a kind of inorganic-phase variable heat-storing material that can satisfy above-mentioned whole requirements.
Summary of the invention
The objective of the invention is for solving the existing existing deficiency of phase change material, provide a kind of stable performance, cheap, wide material sources, easy to make, heat of phase transformation is large, nontoxic, nonflammable inorganic-phase variable heat-storing material.
For achieving the above object, the present invention adopts following technical scheme:
A kind of phase change heat storage material, this material is comprised of silicon oxide, aluminum oxide, ferric oxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, zinc oxide and water; Wherein the mass percent of silicon oxide is 40%-45%, the mass percent of aluminum oxide is 9%-11%, the mass percent of ferric oxide is 0.06-0.3%, the mass percent of calcium oxide is 0.2-0.5%, magnesian mass percent is 0.05%-0.4%, and the mass percent of potassium oxide is 3%-4%, and the mass percent of sodium oxide is 3%-5%, the mass percent of zinc oxide is 6%-11%, and the mass percent of water is 22.8%-38.69%.
A kind of method of making phase change heat storage material, it is characterized in that: with silicon oxide, aluminum oxide, ferric oxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, adding water after zinc oxide grinds evenly mixes, in the described phase change heat storage material, the mass percent of silicon oxide is 40%-45%, the mass percent of aluminum oxide is 9%-11%, the mass percent of ferric oxide is 0.06-0.3%, the mass percent of calcium oxide is 0.2-0.5%, magnesian mass percent is 0.05%-0.4%, the mass percent of potassium oxide is 3%-4%, the mass percent of sodium oxide is 3%-5%, the mass percent of zinc oxide is 6%-11%, and the mass percent of water is 22.8%-38.69%.
Adopt phase-changing energy-storing boiler, Heat from Low-temperature Flue Gas, refrigerator car, the freezer of above-mentioned phase change heat storage material.
After tested, the transformation temperature of above-mentioned phase change material is: 98.38 ℃-120.18 ℃; Heat of phase transformation is: 1063J/g-1481J/g.
Inorganic-phase variable heat-storing material of the present invention is mainly used in the accumulation of heat (boiler, water-heater, calorifier) of paddy electricity, cold-storage (freezer, refrigerator car, air-conditioning), particularly utilize phase change material to be applied to refrigerator-freezer heating, hot water pump system (recovery used heat), absorb solar heat, togs industry, physics medicine equipment, building heat preservation etc. field.
Phase change heat storage material of the present invention has the following advantages:
1) energy storage materials of phase change of the present invention without any environmental pollution, do not have corrodibility, do not have combustible material yet;
2) the material feedstock source is abundant, cheap;
3) material property is stable, and circulating, repeatedly the performance parameter variations such as heat of phase transformation, thermal conductivity is little;
4) heat storage performance exceeds 4 to 7 times than conventional energy-accumulation material and does not wait;
5) phase change material corrodibility is less, can be used in the interchanger of the materials commonly used such as copper, stainless steel, therefore practical, utilize this product to make phase-changing energy-storing boiler, Heat from Low-temperature Flue Gas, heat of phase transformation blower fan, can make freezer, refrigerator car etc. refrigeration equipment by cold-storage again; Also can regulate heat recuperation, industrial waste heat recycling, medicine equipment, drying plant etc. the wide spectrum of room temp and sun power;
6) phase change material of the present invention is very little to the toxic side effect of human body, thereby does not have potential safety hazard in the production practice;
7) energy-accumulation material that forms of this kind composition material possesses more efficient heat storage capacity than other energy-accumulation material, be higher than 3-4 doubly than other phase change heat storage material, utilize the phase-changing energy-storing boiler of above-mentioned phase change material in the greenhouse, relatively to save the 40%-50% expense with gas fired-boiler, and it is stable to possess safety performance, does not have inflammableness, without any public hazards, stable chemical performance, without any characteristics such as corrodibility;
Have more other same type of material when 8) this kind mixture has efficient heat accumulation function and can't possess comparable high-performance.The quality that the degree that this manufacture course of products stirs and speed do not affect this energy storage materials of phase change is characteristics.
Description of drawings
Further specify the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is the graphic representation of phase change heat storage material heat absorption of the present invention.
Embodiment
Further describe the present invention below in conjunction with embodiment, but the present invention is not construed as limiting.
Embodiment 1:
Get by mass percentage 40 parts of silicon oxide, 9 parts in aluminum oxide, 0.06 part of ferric oxide, 0.2 part in calcium oxide, 0.05 part in magnesium oxide, 3 parts of potassium oxides, 3 parts of sodium oxides, 6 parts in zinc oxide, be that 38.69 parts water mixes and obtains phase change material with above-mentioned materials as for adding mass percent after fully grinding in the mortar, the transformation temperature of this phase change material is 120.18 ℃, and heat of phase transformation is 1481J/g.
Embodiment 2:
Get by mass percentage 45 parts of silicon oxide, 11 parts in aluminum oxide, 0.3 part of ferric oxide, 0.5 part in calcium oxide, 0.4 part in magnesium oxide, 4 parts of potassium oxides, 5 parts of sodium oxides, 11 parts in zinc oxide, with above-mentioned materials as for after fully grinding in the mortar, adding mass percent and be 22.8 parts water mixes and obtains phase change material, the transformation temperature of this phase change material is 105.3 ℃, and heat of phase transformation is 1237J/g.
Embodiment 3:
Get by mass percentage 43 parts of silicon oxide, 10 parts in aluminum oxide, 0.1 part of ferric oxide, 0.3 part in calcium oxide, 0.12 part in magnesium oxide, 3.5 parts of potassium oxides, 4.5 parts of sodium oxides, 8 parts in zinc oxide, with above-mentioned materials as for after fully grinding in the mortar, adding mass percent and be 30.48 parts water mixes and obtains phase change material, the transformation temperature of this phase change material is 103.5 ℃, and heat of phase transformation is 1311J/g.
Embodiment 4:
Get by mass percentage 42 parts of silicon oxide, 9.3 parts in aluminum oxide, 0.1 part of ferric oxide, 0.4 part in calcium oxide, 0.1 part in magnesium oxide, 3.3 parts of potassium oxides, 4.1 parts of sodium oxides, 10 parts in zinc oxide, with above-mentioned materials as for after fully grinding in the mortar, adding mass percent and be 30.7 parts water mixes and obtains phase change material, referring to Fig. 1, the transformation temperature of this mixture is 98.38 ℃, and heat of phase transformation is 1063J/g.
Claims (6)
1. phase change heat storage material, this material is by silicon oxide, aluminum oxide, ferric oxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, zinc oxide and water evenly mix, in described phase change heat storage material, the mass percent of silicon oxide is 40%-45%, the mass percent of aluminum oxide is 9%-11%, the mass percent of ferric oxide is 0.06-0.3%, the mass percent of calcium oxide is 0.2-0.5%, magnesian mass percent is 0.05%-0.4%, the mass percent of potassium oxide is 3%-4%, the mass percent of sodium oxide is 3%-5%, and the mass percent of zinc oxide is 6%-11%, and the mass percent of water is 22.8%-38.69%.
2. the manufacture method of a phase change heat storage material, it is characterized in that: with silicon oxide, aluminum oxide, ferric oxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, zinc oxide and water mix after being positioned over and fully grinding in the mortar, in described phase change heat storage material, the mass percent of silicon oxide is 40%-45%, the mass percent of aluminum oxide is 9%-11%, the mass percent of ferric oxide is 0.06-0.3%, the mass percent of calcium oxide is 0.2-0.5%, magnesian mass percent is 0.05%-0.4%, the mass percent of potassium oxide is 3%-4%, the mass percent of sodium oxide is 3%-5%, the mass percent of zinc oxide is 6%-11%, and the mass percent of water is 22.7%-37.68%.
3. a phase-changing energy-storing boiler is characterized in that adopting phase change heat storage material as claimed in claim 1 or 2.
4. a Heat from Low-temperature Flue Gas is characterised in that and adopts phase change heat storage material as claimed in claim 1 or 2.
5. a refrigerator car is characterized in that adopting phase change heat storage material as claimed in claim 1 or 2.
6. a freezer is characterized in that adopting phase change heat storage material as claimed in claim 1 or 2.
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| CN104293303A (en) * | 2013-07-19 | 2015-01-21 | 李义 | Thermal storage material capable of phase transition under normal pressure |
| CN104036866A (en) * | 2014-06-27 | 2014-09-10 | 国家电网公司 | Phase-change temperature-control type high-voltage cable |
| CN107099275B (en) * | 2017-04-28 | 2019-10-15 | 中南大学 | A kind of preparation method of blast furnace slag base composite phase-change heat accumulating |
| CN109261165B (en) * | 2018-08-24 | 2021-06-18 | 昆明理工大学 | Core-shell structure Al-Cu @ NiO-Al2O3Preparation method and application of high-temperature phase-change heat storage catalyst |
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| CN101294064A (en) * | 2008-06-24 | 2008-10-29 | 武汉理工大学 | Process for producing stephanoporate composite inorganic phase-changing material |
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Application publication date: 20110216 Assignee: Beijing Beihai Building Material Co., Ltd. Assignor: Li Zhouque Contract record no.: 2014990000594 Denomination of invention: Phase change thermal storage material and manufacturing method thereof Granted publication date: 20130116 License type: Exclusive License Record date: 20140725 |
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