CN107167013B - A kind of accumulation of energy heat-exchanger rig - Google Patents
A kind of accumulation of energy heat-exchanger rig Download PDFInfo
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- CN107167013B CN107167013B CN201710507956.4A CN201710507956A CN107167013B CN 107167013 B CN107167013 B CN 107167013B CN 201710507956 A CN201710507956 A CN 201710507956A CN 107167013 B CN107167013 B CN 107167013B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/021—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material and the heat-exchanging means being enclosed in one container
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The present invention relates to accumulation of energy heat-exchanger rigs, including accumulation of energy heap, heat exchanger, heating tube and wind turbine；Around accumulation of energy heap be equipped with insulating layer A, between accumulation of energy heap and insulating layer A there are gap be used as air duct, while accumulation of energy heap in be equipped with divulge information groove；It is connected by pipeline between wind turbine and heat exchanger, the other end of wind turbine is accessed by pipeline in the A of air duct, and the other end of heat exchanger passes through pipeline and accesses in the B of air duct, wherein air duct A and air duct B refers to the air duct formed between both ends and insulating layer A opposite in accumulation of energy heap；Electric heating tube is threaded through in accumulation of energy heap for heating accumulation of energy heap, air-flow enters accumulation of energy heap under wind turbine drive by air duct A, accumulation of energy heap heats air-flow, and the present invention utilizes low ebb electric heating energy heap, and utilizes accumulation of energy heap slow release heat air-flow, by becoming hot wind, after hot wind enters heat exchanger heat exchange, become cold wind and be again introduced into wind turbine, air duct A is again introduced under wind turbine drive, it is moved in circles with this, realizes the purpose of accumulation of energy heat exchange.
Description
Technical field
The invention belongs to phase-change accumulation energy transducing fields, are related to a kind of accumulation of energy heat-exchanger rig.
Background technology
Currently, building and heating and industrial or agricultural heat can consume the high-grade energies such as a large amount of fossil energy, electric power, while also producing
The pollutants such as a large amount of carbon dioxide are given birth to.Therefore, it is response national energy conservation and emission reduction and the renewable call of the energy, needs
It develops and uses the cheap reproducible energy and is used for building and heating and industrial or agricultural heat preservation and heat supply technology.
Trough-electricity is that country encourages the cheap energy that uses, but the problem of due to the period, trough-electricity cannot often fill
The utilization divided is also applied to building and heating and industrial or agricultural heating field more and more widely.In order to store heat, people invent
The miscellaneous technology that heat is stored with heat accumulating.
Electric power is cleaning and the convenient energy, higher electricity price are to restrict the widely used principal element of user, still, from
For the interests of State Grid's system, serious peak load difference must adjust, and otherwise not only influence the efficiency of whole system,
The investment for necessarily increasing power construction, than construction storage station come, user side have a large capacity and a wide range use energy storage equipment and production
Product are the most economical, and people are known as this storage station without construction investment.In this respect, electric heating phase-change accumulation energy is for hot charging
It is two kinds of main application forms of electric heating accumulation of energy to set with electric heating water storage energy storage heating plant, and phase-changing energy-storing is substantially better than water storage energy storage,
But never ripe phase-change material and phase change energy storage technology can carry out large-scale engineer application for the former, therefore, this at
The significance of fruit, which is that, provides this material and technology.
Phase-change material is exactly a kind of material that can store thermal energy.Biofacies is issued in specific temperature (such as phase transition temperature)
While variation, along with neither endothermic nor exothermic, it is possible thereby to control the temperature of ambient enviroment or to store thermal energy.Heat or
Cold stores, it is released again when needed, to improve the utilization rate of the energy.It can be improved in terms of building
Building field energy use efficiency reduces building energy consumption, for entire society is energy saving and environmental protection all have it is significant
Economic benefit and social influence.When can efficiently use solar energy using phase-changing energy-storing building materials come accumulation of heat or electric load low ebb
The electric power of phase comes accumulation of heat or cold-storage, makes that the hot-fluid fluctuating range between Indoor environment and outdoor weakens, action time is delayed by,
To reduce indoor temperature fluctuation, improves comfort level and save energy consumption.
Phase-change material can be divided into：Organic phase change material and inorganic phase-changing material.Organic phase-change material mainly include paraffin,
Aliphatic acid and polyalcohol, such phase-change material performance is stablized, non-corrosive, but its heat storage capacity is poor.Therefore research at present
Most still the stronger inorganic phase-changing material of heat storage capacity, the heat storage capacity of most inorganic matter energy storage materials of phase change are stronger extensively
But there is corrosivity, limit its extensive utilization.
Therefore, how the excellent phase-change material of processability and to efficiently use phase-change material be the skill for needing to solve at present
Art problem.
Invention content
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of accumulation of energy heat-exchanger rigs.The accumulation of energy of the present invention is changed
The energy (such as electric power) heating phase-change material that thermal can not be consumed using outside, by thermal energy storage in phase-change material, together
Shi Liyong wind turbines circulating current constantly between phase-change material and heat exchanger, phase-change material slowly release the heating tube thermal energy of absorption
It puts and forms hot wind into air-flow, after hot wind enters heat exchanger heat exchange, become cold wind and be again introduced into wind turbine, under wind turbine drive again
It is secondary to enter air duct A, it is moved in circles with this, realizes the purpose of accumulation of energy heat exchange.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of accumulation of energy heat-exchanger rig, the accumulation of energy heat-exchanger rig include accumulation of energy heap, heat exchanger, heating tube and wind turbine；Accumulation of energy
Around heap be equipped with insulating layer A, between accumulation of energy heap and insulating layer A there are gap be used as air duct, while accumulation of energy heap in be equipped with use
In the groove of ventilation；
It is connected by pipeline between wind turbine and heat exchanger, the other end of wind turbine is accessed by pipeline in the A of air duct, heat exchanger
The other end passes through pipeline and accesses in the B of air duct, wherein air duct A and air duct B refer to both ends and insulating layer A opposite in accumulation of energy heap it
Between the air duct that is formed；
The heating tube is threaded through in accumulation of energy heap for heating accumulation of energy heap, and air-flow is entered under wind turbine drive by air duct A
Accumulation of energy heap, air-flow is heated as hot wind after hot wind enters heat exchanger heat exchange by accumulation of energy heap to be become cold wind and is again introduced into wind turbine,
It is again introduced into air duct A under wind turbine drive, is moved in circles with this, realizes the purpose of accumulation of energy heat exchange.Heat exchanger is arranged in accumulation of energy heap
Top, thermal efficiency higher；
The accumulation of energy heap stores exoergic material by rare-earth ceramic high temperature and forms；The rare-earth ceramic high temperature stores exoergic material
Phase-change material and rare-earth ceramic；The aperture of the rare-earth ceramic is 450-1000nm, porosity of=50%；Phase-change material is uniformly embedding
Enter in the hole of rare-earth ceramic；Phase-change material volume accounts for the 1/2-2/3 of its embedded hole inner volume；
The phase-change material is inorganic salt mixt, and the phase transition temperature that the inorganic salt mixt is become liquid from solid-state is
820-920℃；The rare-earth ceramic includes the solid solution of zirconium oxide and rare earth oxide；Molding when the rare-earth ceramic sintering
Temperature is 1480-1560 DEG C.
As preferred technical solution：
Preferably, it also is provided with insulating layer B outside the pipeline other than insulating layer A and device；The heating tube is electric heating tube；
Rare-earth ceramic high temperature stores exoergic material use mold and becomes brick shape, and brick shape surface is provided with ventilation groove, and brick shape is dilute
Native ceramic high temperature stores exoergic material and is built into accumulation of energy heap；
It is equipped with heat exchanger tube in heat exchanger, cold water is connected in heat exchanger tube；
Connecting line and wind turbine between connecting line, heat exchanger between wind turbine and air duct A and air duct B and heat exchanger
Between connecting line between be equipped with shut-off valve.
Preferably, the electric heating tube is that rare earth calls out energy electric heating tube；The insulating layer A or B be 3 centimetres of silicate aluminum boards and
The composite heat-insulating layer that 10 centimetres of aerogel heat-insulating heat preservation felt materials are formed.
The heating tube is electric heating tube, and specially rare earth calls out energy electric heating tube；Wherein, it is specific to call out energy electric heating tube for rare earth
Energy ceramic electric heating element, Tianjin Lang Hua Science and Technology Ltd.s are called out for rare earth disclosed in Chinese patent CN201611156150.7
Own this product of production, electrical heating efficiency improve 20% or more.The product is a kind of thermal energy of addition rare earth oxide activation
Wide spectrum (including far infrared, ultraviolet, visible light) absorbs transition material, and electricity is wasted luminous that in acting adstante febre
Dividing can wake up and utilize, and referred to as nano rare earth calls out energy ceramics.Material attachment is sintered in arbitrary moulding in more advanced red
On the ceramic matrixes such as outer electric heating material, silicon carbide, cordierite, SiO2, forms rare earth and call out energy ceramics.The material passes through 10 years
Research and development experiment, the thermal conversion efficiency of electric energy is reached 90% or more, compared with traditional heating mode, energy saving 24-32%, work
It is efficient, energy-saving effect is apparent.
The insulating layer A or B is the compound guarantor that 3 centimetres of silicate aluminum boards and 10 centimetres of aerogel heat-insulating heat preservation felt materials are formed
Warm layer.Wherein, for silicate aluminum board in internal layer, aerogel heat-insulating keeps the temperature felt material layer and atmosphere outside.Aerogel heat-insulating is kept the temperature
Felt material is also the own this product of production of Tianjin Lang Hua Science and Technology Ltd.s.Specific preparation method is see being Chinese patent Shen
It please technical solution disclosed in numbers 2017102791275.
The critically important part of accumulation of energy heat-exchanger rig of the present invention is heat preservation, and heat preservation of the invention is using 3 centimetres of alumina silicate
Plate adds 10 centimetres of aerogel heat-insulating heat preservation felt materials, it is ensured that surface temperature when device works is less than 30 DEG C, subtracts to greatest extent
Few heat scatters and disappears.
One layer of ceramic wafer can also be bonded with binder outside the accumulation of energy heap of the present invention, played to the further of phase-change material
The problem of sealing, preventing phase-change material from revealing.But the ceramic wafer does not influence the ventilation effect of accumulation of energy heap.
Preferably, the inorganic salt mixt includes the component of following parts by weight：12-18 parts of lithium fluoride；Sodium chloride 50-
70 parts；15-35 parts of potassium chloride；20-30 parts of sodium carbonate.
Preferably, the inorganic salt mixt further includes the calcium chloride of 20-30 parts by weight.
Preferably, the inorganic salt mixt further includes magnesium fluoride, sodium fluoride, barium carbonate, potassium carbonate, sodium sulphate or sulfuric acid
One kind in potassium；Addition of the above-mentioned substance in phase-change material is 5-10 parts.
Preferably, the rare-earth ceramic includes the component of following parts by weight：92-98 parts of aluminium oxide；Zirconium oxide and rare earth
5-8 parts of the solid solution of oxide；1-3 parts of magnesia.
Preferably, the rare earth oxide is specially one kind in lanthana, yttrium oxide or cerium oxide；Rare earth oxide with
The molar ratio of zirconium oxide is 0.05-0.5:1.
Preferably, the preparation method of the solid solution of zirconium oxide and rare earth oxide is：Zirconyl chloride solution is utilized into ammonium hydroxide
Solution adjusts pH value to 8, and standing filters afterwards for 24 hours, washes, and colloidal sol is made；Then colloidal sol is heated to 80 DEG C, adds rare earth nitre
Then acid salt solution utilizes ammonia spirit to adjust pH value to 7, adds hydrogen peroxide, filter, burn after mixing slowly reaction 2-4h
Knot；The temperature curve used when sintering is is warming up to 350 DEG C by the heating rate of 1 DEG C/min, after keeping the temperature 1h at 350 DEG C, by phase
Same heating rate is warming up to 800-920 DEG C, after then keeping the temperature 1h at 800 DEG C, Temperature fall；Zirconium oxide and rare-earth oxidation is made
The solid solution of object；
The rare earth nitrate solution is filtering after rare earth nitrades are dissolved in the deionized water of its 8-10 times of volume number
Solution obtained；
The zirconyl chloride solution is obtained molten after zirconium oxychloride is dissolved in the deionized water of its 6-8 times of volume number
Liquid；
The addition of rare earth nitrades is 0.05-0.5 with the ratio between the molal quantity of zirconium oxychloride based on oxide:1；
The ratio of the addition and rare earth nitrades of hydrogen peroxide corresponding weight based on oxide is 1:2-1；
A concentration of 1mol/L of the ammonia spirit.
Preferably, the preparation method of rare-earth ceramic high temperature storage exoergic material is：By the inorganic salt mixt in phase-change material
Mixed liquor is made in heated at constant temperature dissolving after mixing, then rare-earth ceramic is placed in above-mentioned mixed liquor after boiling 5-10 minutes, will be dilute
Native ceramics, which take out, to be put in 740-860 DEG C of stove with stove Temperature fall, and rare-earth ceramic high temperature is made and stores exoergic material.
The present invention also provides the preparation methods that a kind of rare-earth ceramic high temperature stores exoergic material, include the following steps：
(1) by 1-3 parts of 5-8 parts of solid solution, magnesia, the cellulose of 92-98 parts of aluminium oxide, zirconium oxide and rare earth oxide
60-80 parts of solution and 100-150 deionized waters, are put into mixed grinding in grinder, and mixed serum is then made, then will mix
Molding in slurries injection mold is closed, rare-earth ceramic is made in the high temperature sintering after the drying of molding finished product；
(2) mixed liquor is made in heated at constant temperature dissolving after mixing the inorganic salt mixt in phase-change material, then by rare earth
Ceramics are placed in above-mentioned mixed liquor boil 5-10 minutes after, rare-earth ceramic is taken out be put in 740-860 DEG C of stove with stove from
So cooling is made rare-earth ceramic high temperature and stores exoergic material.
Preferably, cellulose solution is that cellulose powder is dissolved in the deionized water of its 30-50 times of volume number to be made；Institute
It is one kind in hydroxymethyl cellulose, hydroxyethyl cellulose or hydroxypropyl cellulose to state cellulose；The molecular weight of the cellulose
For 6000-30000；
The grinder is sand mill, and the ball radius in sand mill is 0.8-2mm, grinding rate 800-1600rpm,
Milling time is 20-40 minutes.
Preferably, the magnesia is the particle after 500 mesh screens；The heating temperature of the inorganic salt mixt
It is 820-920 DEG C；The sintering temperature curve of high temperature sintering is after the drying of molding finished product：It heats up from room temperature with 24 hours time
To 1480-1560 DEG C, then with stove natural cooling.
Advantageous effect
The energy (such as electric power) heating phase-change material that the accumulation of energy heat-exchanger rig of the present invention can not be consumed using outside, will be warm
It can be stored in phase-change material, while utilize wind turbine circulating current constantly between phase-change material and heat exchanger, phase-change material will
The heating tube thermal energy of absorption is released slowly to form hot wind in air-flow, hot wind enter heat exchanger heat exchange after, become cold wind again into
Enter in wind turbine, is again introduced into air duct A under wind turbine drive, is moved in circles with this, realize the purpose of accumulation of energy heat exchange.
The inorganic phase-changing material that the present invention uses is inorganic salt mixt, by corrosivity is relatively strong, fusing point is higher, latent heat is relatively low
Villiaumite and other inorganic salts it is compound after, the fusing point in the inorganic salt mixt of formation decreases, while latent heat increases, to the greatest extent
It while possible accumulation of energy, and avoids phase transition temperature excessively high, so that the stronger villiaumite gasification of corrosivity is decomposed, corrode ceramic material.
For the inorganic phase-changing material that the present invention uses for inorganic salt mixt, the inorganic salt mixt that the present invention uses is not letter
Single compounding, is can just have presently embodied phase transition temperature and latent heat under the conditions of mixture ratios only cited by the present invention
Energy.
The elasticity and toughness of the solid solution of zirconium oxide and rare earth oxide produced by the present invention greatly improve, elastic deformation
At 20% or more, the still intact presence of above-mentioned solid solution；The solid solution of zirconium oxide and rare earth oxide produced by the present invention
Heat resisting temperature greatly improves, and heat resisting temperature is at 1500 DEG C or so；The solid solution of zirconium oxide and rare earth oxide produced by the present invention
The density of body further increases, and etchant gas hardly enters, and corresponding corrosion resistance further enhances.
The rare-earth ceramic equally used includes the ceramic material toughness that rare earth oxide and zirconia solid solution are modified and resistance to
Corrosion and forming temperature all greatly improve, and the lapping being more suitable for around phase-change material prolongs the service life.
The rare-earth ceramic of the present invention uses cellulose pore-creating, and aperture is smaller and abundant, has good capillary effect, works as rare earth
When ceramics are immersed in the inorganic salt mixt of liquid, inorganic salt mixt is rapidly entered in capillarity in hole, fast implements this
The preparation of the energy-accumulation material of invention.
It, can not after its cooling since the inorganic salt mixt of the present invention enters in liquid in rare-earth ceramic hole
Duct is fully taken up, when it absorbs heat again becomes liquid, will not go out in hole, cause the corrosion to ceramic base material.
The rare earth oxide and zirconia solid solution of the present invention also acts as the work of nucleating agent in phase-change material phase transition process
With reduction phase separation.
The rare-earth ceramic high temperature of the present invention stores exoergic material without leakage problem, does not generate pollution to environment, composition is stablized, phase
Become good reversibility, service life is long, and device is simple, easy to use.
Description of the drawings
Fig. 1 is the structural schematic diagram of the accumulation of energy heat-exchanger rig of the present invention；
Fig. 2 is the structural schematic diagram of the accumulation of energy heap of the present invention；
Wherein, 1- accumulation of energys heap, 1-1- grooves, 2- heating tubes, the air ducts 3-1- A, 3-2- air duct B, 4- wind turbines, 5- heat exchangers,
5-1 heat exchanger tubes, 6- shut-off valves, 7- insulating layers A, 8-insulating layer B.
Specific implementation mode
The invention will be further elucidated with reference to specific embodiments.It should be understood that these embodiments are merely to illustrate this hair
It is bright rather than limit the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, art technology
Personnel can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Fixed range.
Embodiment 1-6
The rare-earth ceramic high temperature of the present invention stores the preparation method of exoergic material, includes the following steps：
(1) by 1-3 parts of 5-8 parts of solid solution, magnesia, the cellulose of 92-98 parts of aluminium oxide, zirconium oxide and rare earth oxide
60-80 parts of solution and 100-150 deionized waters, are put into mixed grinding in grinder, and mixed serum is then made, then will mix
Molding in slurries injection mold is closed, rare-earth ceramic is made in the high temperature sintering after the drying of molding finished product；
(2) mixed liquor is made in heated at constant temperature dissolving after mixing the inorganic salt mixt in phase-change material, then by rare earth
Ceramics are placed in above-mentioned mixed liquor boil 5-10 minutes after, rare-earth ceramic is taken out be put in 740-860 DEG C of stove with stove from
So cooling is made rare-earth ceramic high temperature and stores exoergic material.
Wherein, cellulose solution is that cellulose powder is dissolved in the deionized water of its 30-50 times of volume number to be made；Fiber
Element is one kind in hydroxymethyl cellulose, hydroxyethyl cellulose or hydroxypropyl cellulose；The molecular weight of cellulose is 6000-
30000；
Grinder is sand mill, and the ball radius in sand mill is 0.8-2mm, grinding rate 800-1600rpm, grinding
Time is 20-40 minutes.
Magnesia is the particle after 500 mesh screens；The heating temperature of inorganic salt mixt is 820-920 DEG C；System
The sintering temperature curve of high temperature sintering is after the drying of mould finished product：It is warming up to 1480-1560 DEG C from room temperature with 24 hours time, so
Afterwards with stove natural cooling.
The preparation method of the solid solution of zirconium oxide and rare earth oxide is：Zirconyl chloride solution is adjusted using ammonia spirit
To 8, standing filters pH value afterwards for 24 hours, washes, colloidal sol is made；Then colloidal sol is heated to 80 DEG C, it is molten adds rare earth nitrades
Then liquid utilizes ammonia spirit to adjust pH value to 7, adds hydrogen peroxide, filter, be sintered after mixing slowly reaction 2-4h；Sintering
The temperature curve of Shi Caiyong is to be warming up to 350 DEG C by the heating rate of 1 DEG C/min, after keeping the temperature 1h at 350 DEG C, by identical heating
Rate is warming up to 800-920 DEG C, after then keeping the temperature 1h at 800 DEG C, Temperature fall；The solid solution of zirconium oxide and rare earth oxide is made
Body；
Rare earth nitrate solution is that filtering is made after rare earth nitrades are dissolved in the deionized water of its 8-10 times of volume number
Solution；
Zirconyl chloride solution is solution obtained after zirconium oxychloride is dissolved in the deionized water of its 6-8 times of volume number；
The addition of rare earth nitrades is 0.05-0.5 with the ratio between the molal quantity of zirconium oxychloride based on oxide:1；
The ratio of the addition and rare earth nitrades of hydrogen peroxide corresponding weight based on oxide is 1:2-1；
A concentration of 1mol/L of ammonia spirit.
Rare-earth ceramic high temperature used by 1-6 of the embodiment of the present invention stores preparation process condition such as the following table 1 institute of exoergic material
Show.
Rare-earth ceramic high temperature used by 1 embodiment 1-6 of table stores the preparation process condition of exoergic material
It is as shown in table 2 below that the rare-earth ceramic high temperature of 1-6 of the embodiment of the present invention stores the corresponding raw material of exoergic material.
Rare-earth ceramic high temperature in 2 embodiment 1-6 of table stores the corresponding raw material of exoergic material
Rare-earth ceramic high temperature made from preparation method through embodiment 1-6 stores exoergic material, including phase-change material and rare earth
Ceramics；The aperture of rare-earth ceramic is 450-1000nm, porosity of=50%；Phase-change material is uniformly embedded into the hole of rare-earth ceramic
It is interior；Phase-change material volume accounts for the 1/2-2/3 of its embedded hole inner volume；
Phase-change material is inorganic salt mixt, and the phase transition temperature that inorganic salt mixt is become liquid from solid-state is 820-920
℃；Rare-earth ceramic includes the solid solution of zirconium oxide and rare earth oxide；Forming temperature when rare-earth ceramic is sintered is 1480-1560
℃。
Inorganic salt mixt includes the component of following parts by weight：
12-18 parts of lithium fluoride；
50-70 parts of sodium chloride；
15-35 parts of potassium chloride；
Inorganic salt mixt further includes the calcium chloride of 20-30 parts by weight.
Inorganic salt mixt further includes one kind in magnesium fluoride, sodium fluoride, barium carbonate, potassium carbonate, sodium sulphate or potassium sulfate；
Addition of the above-mentioned substance in phase-change material is 5-10 parts.
Rare-earth ceramic includes the component of following parts by weight：
92-98 parts of aluminium oxide；
5-8 parts of the solid solution of zirconium oxide and rare earth oxide；
1-3 parts of magnesia.
Rare earth oxide is specially one kind in lanthana, yttrium oxide or cerium oxide；Rare earth oxide and zirconium oxide rub
You are than being 0.05-0.5:1.
Rare-earth ceramic high temperature made from preparation method of the present invention through embodiment 1-6 stores exoergic material component detail such as following table
Shown in 3.
It is detailed that rare-earth ceramic high temperature in 3 embodiment 1-6 of table stores the corresponding component of exoergic material
Two, performance detection
The phase transition temperature of phase-change material is tested using differential scanning calorimetry (DSC) (DSC), rare-earth ceramic high temperature stores exoergic material
Latent heat, specific heat (Gu) and thermal coefficient, the results are shown in Table 4.
The density that the rare-earth ceramic high temperature of the present invention stores exoergic material is 2-3g/cm3, specific heat (Gu) it is 1.8-2.0KJ/
(kg.K), thermal coefficient 0.6-0.9W/mK；Latent heat is 400-800KJ/kg.
Rare-earth ceramic high temperature in 4 embodiment 1-6 of table stores the corresponding performance parameter of exoergic material
The inorganic phase-changing material that the present invention uses is inorganic salt mixt, by corrosivity is relatively strong, fusing point is higher, latent heat is relatively low
Villiaumite and other inorganic salts it is compound after, the fusing point in the inorganic salt mixt of formation decreases, while latent heat increases, to the greatest extent
It while possible accumulation of energy, and avoids phase transition temperature excessively high, so that the stronger villiaumite gasification of corrosivity is decomposed, corrode ceramic material.
Embodiment 7-12
As shown in Figs. 1-2, it is the accumulation of energy heat-exchanger rig of the present invention, accumulation of energy heat-exchanger rig includes accumulation of energy heap 1, heat exchanger 5, adds
Heat pipe 2 and wind turbine 4；Around accumulation of energy heap 1 be equipped with insulating layer A 7, between accumulation of energy heap 1 and insulating layer A 7 there are gap conduct
Air duct, while the groove 1-1 for ventilation is equipped in accumulation of energy heap 1；
It is connected by pipeline between wind turbine 4 and heat exchanger, the other end of wind turbine 4 is accessed by pipeline in the A 3-1 of air duct, is changed
The other end of hot device is accessed by pipeline in the B 3-2 of air duct, wherein air duct A 3-1 refer to phase in accumulation of energy heap 1 with air duct B 3-2
To both ends and insulating layer A 7 between the air duct that is formed；
Heating tube is threaded through in accumulation of energy heap 1 for heating accumulation of energy heap 1, air-flow under the drive of wind turbine 4 by air duct A 3-1 into
Enter accumulation of energy heap 1, air-flow is heated as hot wind after hot wind enters heat exchanger heat exchange by accumulation of energy heap 1 to be become cold wind and be again introduced into wind turbine
In 4, air duct A 3-1 are again introduced under the drive of wind turbine 4, are moved in circles with this, realize the purpose of accumulation of energy heat exchange；
Connecting line and wind between connecting line, heat exchanger between wind turbine 4 and air duct A 3-1 and air duct B 3-2
Shut-off valve 6 is equipped between connecting line between machine 4 and heat exchanger.
Rare-earth ceramic high temperature stores exoergic material use mold and becomes brick shape, and brick shape surface is provided with ventilation groove 1-1, brick shape
Rare-earth ceramic high temperature stores exoergic material and is built into accumulation of energy heap 1；
It is equipped with heat exchanger tube 5-1 in heat exchanger 5, cold water is connected in heat exchanger tube 5-1；
Heating tube 2 is electric heating tube, and electric heating tube is that rare earth calls out energy electric heating tube.Insulating layer A7 is insulating layer；Insulating layer
It also is provided with insulating layer B8 outside pipeline and device other than A7；Insulating layer A or B are that 3 centimetres of silicate aluminum boards and 10 centimetres of aeroges are exhausted
The composite heat-insulating layer that heat heat preservation felt material is formed.
The rare-earth ceramic high temperature that the accumulation of energy heat-exchanger rig of 7-12 of the embodiment of the present invention uses stores exoergic material such as the following table 5 institute
Show.
The rare-earth ceramic high temperature that 5 accumulation of energy heat-exchanger rig of table uses stores exoergic material
Two, performance detection
Use heating power for the accumulation of energy heap in the heating tube heating embodiment 7-12 of 100Kw, the number of heating tube sets 50
The mode of heating of root, heating tube is electrical heating, and the volume of accumulation of energy heap is 1 cubic metre, and the wind speed that wind turbine drives is 0.2m/s, is found
After electric heating tube works 8 hours, accumulation of energy heap in embodiment 7-12 can slowly heat release 12 hours or more, and at 12 hours
Inside the cold water in heat exchanger can be heated to 65 degree from 10 degree.
Claims (9)
1. a kind of accumulation of energy heat-exchanger rig, it is characterized in that：The accumulation of energy heat-exchanger rig includes accumulation of energy heap, heat exchanger, heating tube and wind
Machine；Insulating layer A is equipped with around accumulation of energy heap, between accumulation of energy heap and insulating layer A there are gap as air duct, while in accumulation of energy heap
Equipped with the groove for ventilation；
Be connected by pipeline between wind turbine and heat exchanger, the other end of wind turbine is accessed by pipeline in the A of air duct, heat exchanger it is another
End passes through in pipeline access air duct B, wherein air duct A and air duct B refers to shape between both ends and insulating layer A opposite in accumulation of energy heap
At air duct；
The heating tube is threaded through in accumulation of energy heap for heating accumulation of energy heap, and air-flow enters accumulation of energy under wind turbine drive by air duct A
Heap, air-flow is heated as hot wind after hot wind enters heat exchanger heat exchange by accumulation of energy heap to be become cold wind and is again introduced into wind turbine, in wind
Machine is again introduced into air duct A under driving, and is moved in circles with this, realizes the purpose of accumulation of energy heat exchange；
The accumulation of energy heap stores exoergic material by rare-earth ceramic high temperature and forms；It includes phase transformation that the rare-earth ceramic high temperature, which stores exoergic material,
Material and rare-earth ceramic；The aperture of the rare-earth ceramic is 450-1000nm, porosity of=50%；Phase-change material is uniformly embedded into
In the hole of rare-earth ceramic；Phase-change material volume accounts for the 1/2-2/3 of its embedded hole inner volume；
The phase-change material is inorganic salt mixt, and the phase transition temperature that the inorganic salt mixt is become liquid from solid-state is 820-
920℃；The rare-earth ceramic includes the solid solution of zirconium oxide and rare earth oxide；Forming temperature when the rare-earth ceramic sintering
It is 1480-1560 DEG C；
The inorganic salt mixt includes the component of following parts by weight：12-18 parts of lithium fluoride；50-70 parts of sodium chloride；Potassium chloride
15-35 parts；20-30 parts of sodium carbonate.
2. a kind of accumulation of energy heat-exchanger rig according to claim 1, it is characterised in that：Pipeline other than insulating layer A and device
It also is provided with insulating layer B outside；The heating tube is electric heating tube；
Rare-earth ceramic high temperature stores exoergic material use mold and becomes brick shape, and brick shape surface is provided with ventilation groove, brick shape rare earth pottery
Porcelain high temperature stores exoergic material and is built into accumulation of energy heap；
It is equipped with heat exchanger tube in heat exchanger, cold water is connected in heat exchanger tube；
Between connecting line and wind turbine and heat exchanger between connecting line, heat exchanger between wind turbine and air duct A and air duct B
Connecting line between be equipped with shut-off valve.
3. a kind of accumulation of energy heat-exchanger rig according to claim 2, it is characterised in that：The electric heating tube is that rare earth calls out energy electricity
Heating tube；The insulating layer A or B is the compound guarantor that 3 centimetres of silicate aluminum boards and 10 centimetres of aerogel heat-insulating heat preservation felt materials are formed
Warm layer.
4. a kind of accumulation of energy heat-exchanger rig according to claim 1, it is characterised in that：The inorganic salt mixt further includes
The calcium chloride of 20-30 parts by weight.
5. a kind of accumulation of energy heat-exchanger rig according to claim 4, which is characterized in that the inorganic salt mixt further includes fluorine
Change one kind in magnesium, sodium fluoride, barium carbonate, potassium carbonate, sodium sulphate or potassium sulfate；Addition of the above-mentioned substance in phase-change material
It is 5-10 parts.
6. a kind of accumulation of energy heat-exchanger rig according to claim 1, which is characterized in that the rare-earth ceramic includes following weight
The component of number：92-98 parts of aluminium oxide；5-8 parts of the solid solution of zirconium oxide and rare earth oxide；1-3 parts of magnesia.
7. a kind of accumulation of energy heat-exchanger rig according to claim 6, which is characterized in that the rare earth oxide is specially to aoxidize
One kind in lanthanum, yttrium oxide or cerium oxide；The molar ratio of rare earth oxide and zirconium oxide is 0.05-0.5:1.
8. a kind of accumulation of energy heat-exchanger rig according to claim 6, which is characterized in that the solid solution of zirconium oxide and rare earth oxide
The preparation method of body is：Zirconyl chloride solution is adjusted into pH value to 8 using ammonia spirit, standing filters afterwards for 24 hours, washes, and is made
Colloidal sol；Then colloidal sol is heated to 80 DEG C, adds rare earth nitrate solution, ammonia spirit is then utilized to adjust pH value to 7, then
Hydrogen peroxide is added, filters, is sintered after mixing slowly reaction 2-4h；The temperature curve used when sintering is by the heating of 1 DEG C/min
Rate is warming up to 350 DEG C, and after keeping the temperature 1h at 350 DEG C, 800-920 DEG C is warming up to by identical heating rate, is then protected at 800 DEG C
After warm 1h, Temperature fall；The solid solution of zirconium oxide and rare earth oxide is made；
The rare earth nitrate solution is that filtering is made after rare earth nitrades are dissolved in the deionized water of its 8-10 times of volume number
Solution；
The zirconyl chloride solution is solution obtained after zirconium oxychloride is dissolved in the deionized water of its 6-8 times of volume number；
The addition of rare earth nitrades is 0.05-0.5 with the ratio between the molal quantity of zirconium oxychloride based on oxide:1；
The ratio of the addition and rare earth nitrades of hydrogen peroxide corresponding weight based on oxide is 1:2-1；
A concentration of 1mol/L of the ammonia spirit.
9. a kind of accumulation of energy heat-exchanger rig according to claim 1, it is characterised in that：Rare-earth ceramic high temperature stores exoergic material
Preparation method is：Mixed liquor is made in heated at constant temperature dissolving after inorganic salt mixt in phase-change material is mixed, then by rare earth
Ceramics are placed in above-mentioned mixed liquor boil 5-10 minutes after, rare-earth ceramic is taken out be put in 740-860 DEG C of stove with stove from
So cooling is made rare-earth ceramic high temperature and stores exoergic material.
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| JP4911002B2 (en) * | 2007-11-30 | 2012-04-04 | 株式会社豊田中央研究所 | Heat exchange type heat utilization apparatus and manufacturing method thereof |
| CN101607195A (en) * | 2009-07-14 | 2009-12-23 | 顾冬萍 | Cerium oxide and zirconium oxide based sosoloid catalyst, preparation method and application thereof |
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