CN203396115U - Nanometer fused salt phase change energy storage solar furnace - Google Patents

Nanometer fused salt phase change energy storage solar furnace Download PDF

Info

Publication number
CN203396115U
CN203396115U CN201320515538.7U CN201320515538U CN203396115U CN 203396115 U CN203396115 U CN 203396115U CN 201320515538 U CN201320515538 U CN 201320515538U CN 203396115 U CN203396115 U CN 203396115U
Authority
CN
China
Prior art keywords
heat
fused salt
energy storage
phase change
change energy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320515538.7U
Other languages
Chinese (zh)
Inventor
黄金
肖俊兵
祝盼盼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong University of Technology
Original Assignee
Guangdong University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong University of Technology filed Critical Guangdong University of Technology
Priority to CN201320515538.7U priority Critical patent/CN203396115U/en
Application granted granted Critical
Publication of CN203396115U publication Critical patent/CN203396115U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00—Arrangements for storing heat collected by solar heat collectors
    • F24S60/10—Arrangements for storing heat collected by solar heat collectors using latent heat
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)

Abstract

The utility model discloses a nanometer fused salt phase change energy storage solar furnace. The nanometer fused salt phase change energy storage solar furnace consists of a Fresnel condenser, a phase change energy storage heat exchanger, a longitude-latitude dual-shaft tracker, support rods, V-shaped balance supports and a bottom bracket; the condensing focal point of the Fresnel condenser is provided with the phase change energy storage heat exchanger which has heat absorption, heat release and heat storage functions simultaneously, is internally provided with a nanometer fused salt composite phase change energy storage material, and is provided with a heat absorption cavity and a heat release furnace head; a temperature preservation and heat insulation layer is wrapped outside the phase change energy storage heat exchanger. The solar furnace can meet heat utilizing requirement of general family life on hot water, cooking, barbecue and the like; compared with a traditional direct-light-condensation-type solar cooker, the nanometer fused salt phase change energy storage solar furnace has the advantages of high heat collection temperature, no need of outdoor operation, capability of being used continuously at night, and the like.

Description

A kind of nanometer fused salt phase-change accumulation energy solar furnace
Technical field
The utility model belongs to solar energy development and utilizes technical field, relates to a kind of nanometer fused salt phase-change accumulation energy solar furnace.
Background technology
Solar range is one of solar thermal utilization product, especially more common in NORTHWEST CHINA Bu rural area.Solar cooker is owing to not consuming conventional energy resource and biomass energy has broad application prospects in rural area.Solar cooker is the another solar energy focus technology after solar water heater is universal.The design of employing scientific optimization, development cost is low, volume is little, the thermal efficiency is high, the thermal-arrest solar cooker of long service life, has broad application prospects.
Solar cooker is mainly divided into Direct-type and two kinds of solar cookers of indirect-type.Successfully realize business-like Direct-type solar cooker and mainly contain two kinds, box-type solar collector and light-focusing type solar cooker.Box-type solar collector is mainly equipped with individual layer or double glazing and is formed by double-layer heat insulation case, its operation principle is " greenhouse effects ", the shortwave radiation that is the sun can enter incubator through glass at an easy rate, and the long-wave radiation that cryogenic object sends can not be passed through, thereby form into having more few transfer mode that can flow, heat is put aside.The heat-collecting temperature of this solar cooker is generally lower than 100 ℃, but simple in structure, easy to operate, is mainly used in insulation and stewing prepared food thing.The common optically focused multiplying power of light-focusing type solar cooker is more than 50 times, and optically focused temperature is more than 300 ℃, light-focusing type solar cooker because of the advantages such as its optically focused temperature is high, simple in structure, cheap be the most common in current solar cooker, apply the most successful solar cooker.Indirect-type solar cooker (also claiming indoor solar cooker), due to the direct irradiation that operator can avoid sunlight, also enjoys researcher to pay close attention to.Indirect-type solar cooker is generally usingd flat-plate collector, vacuum tube collector, groove type paraboloid thermal-collecting tube as heat collector, usings conduction oil, water etc. as heat-conduction medium, utilizes high-temperature pump to drive and forms a kind of indoor solar cooker, and some also conducts heat with heat pipe.Due to the intermittent problems of solar energy, even if one day sun is very good, but at dusk the time-division there is no the sun, just can not adopt Direct-type solar cooker evening.Therefore the solar cooker with heat accumulation arises at the historic moment, and with the accumulation of heat of sensible heat mode, is heat storage type solar cooker the earliest, and conventional sensible heat heat-storing material has: organic synthesis oil, sand and mineral oil.The shortcoming of sensible heat heat storage type solar cooker maximum is that its heat storage medium specific heat is low, and in cooking process, along with the reduction of heat storage medium temperature, its heat release efficiency also constantly reduces.Latent heat heat accumulation type solar cooker is because its high energy storage density and nearly quasi-isothermal operating temperature receive much concern and have prospect most.Conventional latent-heat storage material has: stearic acid (phase transition temperature is 55 ℃), magnesium nitrate hexahydrate (phase transition temperature is 89 ℃) and both mixtures, acetamide (phase transition temperature is 82 ℃), antifebrin (phase transition temperature is 118 ℃) and alusil alloy (phase transition temperature is 557 ℃).In general, although Direct-type solar cooker cost is low, simple in structure, keep away the hardship of being exposed to the sun under unavoidable burning sun, in situation with good conditionsi, user is unwilling to use; Indirect-type solar cooker can be easily at in-house operation, but cost is high, and complex structure particularly also need to be with the warm driving of height, and heat pipe type solar cooker is also immature, and service life is short.
Utility model content
The purpose of this utility model is to provide a kind of nanometer fused salt phase-change accumulation energy solar furnace.This solar furnace adopts the downward optically focused of Fresnel Lenses, Fresnel optical collector focuses on the solar radiant energy of low energy-flux density to possess heat absorption simultaneously by refractive power transmission mode, on the Latent Heat Storage Exchanger of heat release and heat storage function, after solar radiant energy line focus, energy-flux density increases, by the heat-absorbing chamber absorption with heat absorbing coating on Latent Heat Storage Exchanger, be converted to heat energy simultaneously, principle based on phase-change thermal storage, in the nanometer fused salt composite phase-change energy storage material of thermal energy storage in Latent Heat Storage Exchanger, cooled and solidified by nanometer fused salt composite phase-change energy storage material discharges when needed.
the utility model above-mentioned purpose is achieved by the following technical programs:
A kind of nanometer fused salt phase-change accumulation energy solar furnace that the utility model provides, comprises that Fresnel optical collector 1, Latent Heat Storage Exchanger 2, longitude and latitude biaxial tracker 3, strut 4, V font balance bracket 5 and collet 6 form; Described Fresnel optical collector 1 is supported by some struts 4, the other end of strut 4 is arranged on V font balance bracket 5, V font balance bracket 5 is arranged on the latitude axle of longitude and latitude biaxial tracker 3, one end of described Latent Heat Storage Exchanger 2 be placed on V font balance bracket 5 with collet 6 on, the other end is aimed at the optically focused focus of Fresnel optical collector 1, and the warp beam of longitude and latitude biaxial tracker 3 connects the base of nanometer fused salt phase-change accumulation energy solar furnace.
Described Fresnel optical collector 1 is formed by polymethyl methacrylate (PMMA) hot pressing, is shaped as circle or square, and optically focused multiplying power is 100～1000 times.
Described Latent Heat Storage Exchanger 2 is cylinder, its outer parcel insulation heat insulation layer 9, and upper and lower two ends are burner insulation cover 7 and heat-absorbing chamber insulation cover 13, centre is Latent Heat Storage Exchanger inner bag 10; At the two ends up and down of Latent Heat Storage Exchanger inner bag 10, be heat release burner 8 and heat-absorbing chamber 12, heat release burner 8 is outer is burner insulation cover 7, and heat-absorbing chamber 12 is outer is heat-absorbing chamber insulation cover 13, and metal clavate rib 11 for 4～6 heat conduction is installed at heat-absorbing chamber 12 back; The optically focused focus that heat-absorbing chamber 12 is aimed at Fresnel optical collector 1; Described Latent Heat Storage Exchanger inner bag 10 is equipped with nanometer fused salt composite phase-change energy storage material; When described Latent Heat Storage Exchanger 2 absorbs heat, heat-absorbing chamber insulation cover 13 is opened, and burner insulation cover 7 covers; During heat release, heat-absorbing chamber insulation cover 13 covers, and burner insulation cover 7 is opened; During heat accumulation, burner insulation cover 7 and heat-absorbing chamber insulation cover 13 all cover.
The principal phase that the expanded graphite that described nanometer fused salt composite phase-change energy storage material is 1～5% by mass fraction and mass fraction are 95～99% becomes Material cladding and forms, recombination process is for to join the expanded graphite of described ratio in the aqueous solution of main phase-change material, by drying and dehydrating after ultrasonic dispersion, described main phase-change material is sodium nitrate (NaNO 3) and potassium nitrate (KNO 3) binary salt-mixture, its mass ratio is 4～6:6～4, described nanometer fused salt composite phase-change energy storage material phase transition temperature is 210～230 ℃, latent heat of phase change is 120～150J/g.
with respect to prior art, the utlity model has following advantage and beneficial effect:
(1) compare with traditional light-focusing type solar cooker, this nanometer fused salt phase-change accumulation energy solar furnace possesses heat storage function, and its Latent Heat Storage Exchanger is movable to office operation, without outdoor operation and night, without the solar time, can continue the advantages such as use.
(2) the utility model creatively adopts aqueous solution technology, utilizes ultrasonic wave means, expanded graphite is peeled off and disperseed to prepare a kind of nanometer fused salt composite phase-change energy storage material, and being applied in described nanometer fused salt phase-change accumulation energy solar furnace.The nanometer fused salt composite phase-change energy storage material phase transition temperature of preparation is at 210～230 ℃, and latent heat of phase change is 120～150J/g, nontoxic, corrodes littlely, and main phase-change material is cheap nitrate, and wide material sources are easy to get.This nanometer fused salt composite phase-change energy storage material has that phase transition temperature is high, latent heat of phase change is large, thermal conductivity factor is high, the characteristic of stable performance, thereby, relatively traditional light-focusing type solar cooker, this nanometer fused salt phase-change accumulation energy solar furnace heat-collecting temperature is high, except meeting hot water for family life, stewing boiling etc. demand, can also realize and decoct the heat demand such as stir-fry, barbecue.
Accompanying drawing explanation
Fig. 1 is the structural representation of nanometer fused salt phase-change accumulation energy solar furnace of the present utility model.
Wherein: 1. Fresnel optical collector, 2. Latent Heat Storage Exchanger, 3. longitude and latitude biaxial tracker, 4. strut, 5. V font balance bracket, 6. collet.
Fig. 2 is the structural representation of Latent Heat Storage Exchanger of the present utility model.
Wherein: 7. burner insulation cover, 8. heat release burner, 9. insulation heat insulation layer, 10. Latent Heat Storage Exchanger inner bag, metal clavate ribs, 12. heat-absorbing chambers, 13. heat-absorbing chamber insulation covers for 11. heat conduction.
Fig. 3 is the DSC curve of the nanometer fused salt composite phase-change energy storage material prepared of embodiment.
Fig. 4 is the ESEM picture of the nanometer fused salt composite phase-change energy storage material prepared of embodiment.
The specific embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment
As shown in Figure 1, a kind of nanometer fused salt phase-change accumulation energy solar furnace, it is mainly consisted of the Fresnel optical collector 1 of optically focused from the top down, Latent Heat Storage Exchanger 2 and the longitude and latitude biaxial tracker 3 of in-built nanometer fused salt composite phase-change energy storage material.
Fresnel optical collector 1 is formed by polymethyl methacrylate (PMMA) hot pressing, can be circular or square, optically focused multiplying power is 100～1000 times of scopes, Fresnel optical collector 1 is supported by some struts 4, strut 4 is fixed on V font balance bracket 5, V font balance bracket 5 is fixed on the latitude axle of longitude and latitude biaxial tracker 3, and V font balance bracket 5 is mainly used in offsetting that weight because of Latent Heat Storage Exchanger 2 produces compared with high pulling torque.
By Latent Heat Storage Exchanger 2 be placed on V font balance bracket 5 with collet 6 on, Latent Heat Storage Exchanger inner bag in Latent Heat Storage Exchanger 2 Shang Xia 10 two ends be heat release burner 8 and heat-absorbing chamber 12, at heat-absorbing chamber 12 back, be equipped with 4～6 for the metal clavate rib 11 of heat conduction, the heat-absorbing chamber 12 of Latent Heat Storage Exchanger 2 is aimed at the optically focused focus of Fresnel optical collector 1 simultaneously, Latent Heat Storage Exchanger 2 wall coated outside have insulation heat insulation layer 9, outside heat release burner 8, there is burner insulation cover 7, outside heat-absorbing chamber 12, there is heat-absorbing chamber insulation cover 13, described Latent Heat Storage Exchanger 2 is removable, possesses heat absorption simultaneously, heat release and heat storage function, when Latent Heat Storage Exchanger absorbs heat, heat-absorbing chamber insulation cover is opened, burner insulation cover covers, during heat release, heat-absorbing chamber insulation cover covers, burner insulation cover is opened, during heat accumulation, burner insulation cover and heat-absorbing chamber insulation cover all cover.
The principal phase that the expanded graphite that described nanometer fused salt composite phase-change energy storage material is 1～5% by mass fraction and mass fraction are 95～99% becomes Material cladding and forms, recombination process is for to join the expanded graphite of described ratio in the aqueous solution of main phase-change material, by drying and dehydrating after ultrasonic dispersion, described main phase-change material is sodium nitrate (NaNO 3) and potassium nitrate (KNO 3) binary salt-mixture, mass ratio is 4～6:6～4.
The preparation of nanometer fused salt composite phase-change energy storage material, takes that 12g tests pure sodium nitrate and 8g tests pure potassium nitrate, after mixing, is dissolved in deionized water, obtains the aqueous solution of main phase-change material; Take 0.5g expanded graphite, add in aqueous solution, be uniformly mixed rear ultrasonic dispersion 90min, ultrasonic power is 700W, drying and dehydrating then, baking temperature is 280 ℃ of left and right, 5 hours drying times, to guarantee that moisture fully evaporates, finally grind seal up for safekeeping stand-by.Test shows, nanometer fused salt composite phase-change energy storage material phase transition temperature is 220.9 ℃, and latent heat of phase change is 128.7J/g, sees accompanying drawing 3.

Claims (3)

1. a nanometer fused salt phase-change accumulation energy solar furnace, is characterized in that: comprise that Fresnel optical collector (1), Latent Heat Storage Exchanger (2), longitude and latitude biaxial tracker (3), strut (4), V font balance bracket (5) and collet (6) form; Described Fresnel optical collector (1) is supported by some struts (4), the other end of strut (4) is arranged on V font balance bracket (5), V font balance bracket (5) is arranged on the latitude axle of longitude and latitude biaxial tracker (3), one end of described Latent Heat Storage Exchanger (2) be placed on V font balance bracket (5) with collet (6) on, the other end is aimed at the optically focused focus of Fresnel optical collector (1), and the warp beam of longitude and latitude biaxial tracker (3) connects the base of nanometer fused salt phase-change accumulation energy solar furnace.
2. nanometer fused salt phase-change accumulation energy solar furnace according to claim 1, is characterized in that: described Fresnel optical collector (1) is shaped as circular or square.
3. nanometer fused salt phase-change accumulation energy solar furnace according to claim 1, it is characterized in that: described Latent Heat Storage Exchanger (2) is cylinder, its outer parcel insulation heat insulation layer (9), upper and lower two ends are burner insulation cover (7) and heat-absorbing chamber insulation cover (13), and centre is Latent Heat Storage Exchanger inner bag (10); At the two ends up and down of Latent Heat Storage Exchanger inner bag (10), be heat release burner (8) and heat-absorbing chamber (12), heat release burner (8) is outer is burner insulation cover (7), heat-absorbing chamber (12) is outer is heat-absorbing chamber insulation cover (13), and 4～6 metal clavate ribs (11) for heat conduction are installed at the back of heat-absorbing chamber (12); Heat-absorbing chamber (12) is aimed at the optically focused focus of Fresnel optical collector (1); Described Latent Heat Storage Exchanger inner bag (10) is equipped with nanometer fused salt composite phase-change energy storage material.
CN201320515538.7U 2013-08-22 2013-08-22 Nanometer fused salt phase change energy storage solar furnace Expired - Fee Related CN203396115U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320515538.7U CN203396115U (en) 2013-08-22 2013-08-22 Nanometer fused salt phase change energy storage solar furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320515538.7U CN203396115U (en) 2013-08-22 2013-08-22 Nanometer fused salt phase change energy storage solar furnace

Publications (1)

Publication Number Publication Date
CN203396115U true CN203396115U (en) 2014-01-15

Family

ID=49907642

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320515538.7U Expired - Fee Related CN203396115U (en) 2013-08-22 2013-08-22 Nanometer fused salt phase change energy storage solar furnace

Country Status (1)

Country Link
CN (1) CN203396115U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103471256A (en) * 2013-08-22 2013-12-25 广东工业大学 Nanometer molten salt phase-change energy storage solar furnace
CN104482666A (en) * 2014-09-29 2015-04-01 翟思羽 Solar constant temperature barbecuing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103471256A (en) * 2013-08-22 2013-12-25 广东工业大学 Nanometer molten salt phase-change energy storage solar furnace
CN103471256B (en) * 2013-08-22 2015-06-24 广东工业大学 Nanometer molten salt phase-change energy storage solar furnace
CN104482666A (en) * 2014-09-29 2015-04-01 翟思羽 Solar constant temperature barbecuing device

Similar Documents

Publication Publication Date Title
CN103471256B (en) Nanometer molten salt phase-change energy storage solar furnace
Kalidasan et al. Phase change materials integrated solar thermal energy systems: Global trends and current practices in experimental approaches
Sharma et al. Solar cooker with latent heat storage systems: A review
CN106014891B (en) A kind of groove type solar association circulating power generation system
CN201259343Y (en) Multi-surface compound wire focusing groove type solar medium and high temperature heat collection and heat storage system
CN103438586B (en) Solar energy optical-thermal collector, photo-thermal electricity collection plate and solar heating hot-water heating system
CN103629829A (en) Stirling heat engine solar heat collector
Wollele et al. Design and experimental investigation of solar cooker with thermal energy storage
CN105066479A (en) Composite cavity type solar absorber
CN203396115U (en) Nanometer fused salt phase change energy storage solar furnace
CN201779886U (en) Solar heat-collecting unit structure
CN203296823U (en) Multiple-towered goose-queue-arranged solar heat collecting and generating system
CN209541198U (en) A kind of high temperature type solar energy optical-thermal photovoltaic devices
CN209165805U (en) A kind of high-efficiency multi-function domestic solar combined unit
CN203041937U (en) Steam power autorotation solar oven
Mawire Solar thermal energy storage for solar cookers
CN201401942Y (en) Photoelectric wind integrated energy-storage radiator
CN203203270U (en) Solar light-concentration heat utilization system for high-rise building
CN203464512U (en) Solar photothermal collector, photothermal electric collection board and solar heating hot water system
CN101985918A (en) High temperature efficient ground solar steam generating set
CN204880792U (en) Flat medium temperature heat collector
Kanimozhi et al. Experimental study on solar cooker using phase change materials
CN103390673A (en) Groove type light-gathering photoelectricity and thermal energy hybrid generating system and control method
CN203642527U (en) Solar thermal collector for Stirling heat engine
CN204145411U (en) Plate-tube type solar photoelectric light-heat assembly

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140115

Termination date: 20160822

CF01 Termination of patent right due to non-payment of annual fee