CN106225264A - A kind of photothermal conversion device and method - Google Patents
A kind of photothermal conversion device and method Download PDFInfo
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- CN106225264A CN106225264A CN201610750647.5A CN201610750647A CN106225264A CN 106225264 A CN106225264 A CN 106225264A CN 201610750647 A CN201610750647 A CN 201610750647A CN 106225264 A CN106225264 A CN 106225264A
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
Abstract
The present invention relates to a kind of photothermal conversion device and method, including housing, light hot receiver, balance bunker；Housing is provided with the double Shell of inner shell and shell, constitutes the thermal of closing between inner shell and shell, is filled with heat storage medium in thermal；Being provided with heating chamber in the bottom of inner shell, be provided with torus on the top of inner shell, heating is filled with heat conduction with phase change medium in chamber, is filled with fluid heat carrier medium in torus；Light hot receiver is arranged in described heating chamber；The upper end of torus connects a thermal medium output pipe, is communicated with the top gaseous state interface in described heating chamber on the top of balance bunker, is communicated with thermal medium output pipe liquid interface in the lower end of balance bunker；The invention has the beneficial effects as follows: use the transmission of heat conduction with phase change media implementation high temperature heat, improve the temperature adaptation scope of the heat-conducting medium of photothermal conversion device output, the exportable high temperature heat conducting medium being higher than 1000 DEG C, can make full use of solar energy in the environment that sunlight collecting variable quantity is big.
Description
Technical field
The invention belongs to clean energy resource system, particularly relate to utilize a kind of photothermal conversion device of solar energy and method.
Background technology
Utilize field to there is multiple technologies scheme at house clean energy resource at present, include that photo-thermal is sent out in field of solar energy utilization
The modes such as electricity, photovoltaic generation and solar water.Photothermal conversion device is the nucleus equipment of too heat-energy utilizing device, due to from certainly
The solar energy that so boundary gathers is very big with the variable quantity of the factor such as weather, time, and common solar energy heat conversion device cannot be fitted
Answer the situation that solar energy variable quantity is big, equipment cannot be made when solar energy acquisition amount is relatively low normally to work, in solar energy acquisition amount
Time excessive, heat-conducting medium cannot adapt to too high temperature, hampers and makes full use of solar energy, constrains Solar use skill
The development of art.
Summary of the invention
The purpose of the present invention is to propose to the technical scheme of a kind of photothermal conversion device and method, improve photothermal conversion device pair
The adaptability of the solar energy acquisition that variable quantity is big, improves solar energy composite utilization benefit.
To achieve these goals, the technical scheme is that a kind of photothermal conversion device, convert light energy into heat energy
Being supplied to heat energy utilization equipment (7), described photothermal conversion device includes housing (1), light hot receiver (2), balance bunker (3)；Institute
State housing and be provided with the double Shell of inner shell and shell, between described inner shell and shell, constitute the thermal (1-1) of closing, institute
State and thermal is filled with heat storage medium (0-1)；Heating chamber (1-2), upper at described inner shell it is provided with in the bottom of described inner shell
Portion is provided with torus (1-3), is communicated with managing (1-8) between described heating chamber and torus, the upper end connection of described communicating pipe
The bottom of described torus, the lower end of described communicating pipe extend into the bottom in described heating chamber；Described heating chamber is filled with phase
Become heat-conducting medium (0-2-1), described heat conduction with phase change medium when temperature is increased to phase transition temperature from solid state transformation be liquid
Material, is filled with fluid heat carrier medium (0-2-2) in described torus；Described smooth hot receiver is arranged in described heating chamber；
The upper end of described torus connects a thermal medium output pipe (5-1), and the other end of described thermal medium output pipe connects institute
Stating the thermal medium entrance of heat energy utilization equipment, the lower end of described torus connects a reflux pipe (5-2), described reflux pipe
The other end connect described heat energy utilization equipment thermal medium outlet；Described balance bunker is the cavity closed, at described balance bunker
Top be provided with gaseous state interface, be provided with liquid interface in the lower end of described balance bunker, described gaseous state interface is by being provided with compressor
(4) heating the top in chamber described in pipeline communication, thermal medium output pipe described in described liquid orifice, at described balance bunker
Inside it is filled with noble gas, preserves described fluid heat carrier medium in the bottom of described balance bunker.
Further, the position of described housing is less than described heat energy utilization equipment, and the position of described balance bunker is higher than described
Heat energy utilization equipment.
Further, it is provided with in described smooth hot receiver and receives heat conduction cone (2-2) injecting light, receive at described photo-thermal
The outer surface of device is provided with conducting strip (2-3,2-4), and described conducting strip contacts with the heat conduction with phase change medium in described heating chamber.
Further, described reflux pipe is provided with temperature sensor (5-4).
Further, the heat storage medium (0-1) filled in described thermal is phase-change heat accumulation medium, and described phase-transition heat-storage is situated between
Matter includes ternary chlorine compound；Noble gas in described balance bunker is nitrogen.
Further, the heat conduction with phase change medium (0-2-1) filled in described heating chamber is metallic tin.
Further, the fluid heat carrier medium (0-2-2) filled in described torus is conduction oil.
Further, described heat energy utilization equipment (7) is Stirling engine expanding end heater.
A kind of photo-thermal conversion method, described method is the light of the photothermal conversion device described in claim 1 to 7 any one
Thermal conversion method；It is characterized in that, described method includes:
Described smooth hot receiver (2) receives the light source containing heat energy and produces the heat conduction with phase change in heating chamber described in energy heats
Medium (0-2-1), described heat conduction with phase change medium heats the fluid heat carrier medium (0-2-2) in described torus, the most described storage
Heat storage medium (0-1) in hot chamber absorbs and stores heat energy；
Heat energy is delivered to described heat energy utilization equipment by thermal medium output pipe (5-1) by heated fluid heat carrier medium
(7) fluid heat carrier medium, completing heat energy utilization returns to by reflux pipe (5-2) bottom of described torus, complete heat
Circulation can be utilized；
When the temperature of described heat conduction with phase change medium exceedes after phase transition temperature is changed into liquid, start compressor (4), by described balance
Noble gas in storehouse (3) is filled with in heating chamber, forms inflation interlayer (1-4) at the top in described heating chamber, makes in heating chamber
Heat conduction with phase change medium by described communicating pipe (1-8) entering described torus, the fluid heat carrier medium in described torus leads to
The liquid interface of lower end, overbalance storehouse enters balance bunker, and after whole fluid heat carrier mediums enter balance bunker, described phase transformation is led
Heat energy is delivered to described heat energy utilization equipment (7) by thermal medium output pipe (5-1) by thermal medium, completes the phase of heat energy utilization
Become heat-conducting medium and returned to the bottom of described torus by reflux pipe (5-2), complete heat energy utilization circulation；
When the temperature of described heat conduction with phase change medium reduces, will add before the temperature of heat conduction with phase change medium is reduced to phase transition temperature
During noble gas is returned to described balance bunker in hot chamber, make the described heat conduction with phase change medium back flow in entrance torus to heating
Chamber, makes the described fluid heat carrier medium in entrance balance bunker be back in torus, and fluid heat carrier medium is exported by thermal medium
Heat energy is delivered to described heat energy utilization equipment (7) by pipeline (5-1), and the fluid heat carrier medium completing heat energy utilization passes through return duct
Road (5-2) returns in described torus, completes heat energy utilization circulation.
Further, described heat conduction with phase change medium is metallic tin, when the temperature of described heat conduction with phase change medium is higher than 300 DEG C
Shi Qidong compressor, is filled with the noble gas in described balance bunker in heating chamber；When the temperature of described heat conduction with phase change medium is low
By during in heating chamber, noble gas is returned to described balance bunker in 250 DEG C time；
Described temperature sensor (5-4) detects the temperature of described heat conduction with phase change medium.
The invention has the beneficial effects as follows: use conventional liquid heat-carrying agent to carry out conventional heat energy transmission, use phase transformation to lead
Thermal medium realizes high temperature heat transmission, improves the temperature adaptation scope of the heat-conducting medium of photothermal conversion device output, exportable
High temperature heat conducting medium higher than 1000 DEG C, can make full use of solar energy in the environment that sunlight collecting variable quantity is big.
With embodiment, the present invention is described in detail below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is present configuration figure；
Fig. 2 is photo-thermal receiver architecture figure of the present invention；
Fig. 3 is the A direction view of Fig. 2；
Fig. 4 be fluid heat carrier medium of the present invention carry out heat energy utilization circulation schematic diagram:
Fig. 5 is the present invention to be switched to heat conduction with phase change medium by fluid heat carrier medium and carries out heat energy utilization circulation schematic diagram；
Fig. 6 is the present invention to be switched to fluid heat carrier medium by heat conduction with phase change medium and carries out heat energy utilization circulation schematic diagram.
Detailed description of the invention
Embodiment one:
As shown in Figure 1, Figure 2, a kind of photothermal conversion device, convert light energy into heat energy and be supplied to heat energy utilization equipment 7, heat energy utilization sets
Standby is Stirling engine expanding end heater, and Stirling engine is a kind of external-heat electromotor.
Photothermal conversion device includes housing 1, light hot receiver 2, balance bunker 3.
The position of housing is less than heat energy utilization equipment, and the position of balance bunker is higher than described heat energy utilization equipment.
Housing is provided with inner shell and shell double Shell, constitutes thermal 1-1 of closing, accumulation of heat between inner shell and shell
Chamber is filled with heat storage medium 0-1；The heat storage medium filled in thermal is a kind of phase-change heat accumulation medium, uses ternary chlorination
Thing, ternary chlorine compound is the mixture of potassium chloride, sodium chloride and magnesium chloride.
Be provided with heating chamber 1-2 in the bottom of inner shell, be provided with torus 1-3 on the top of inner shell, heating chamber and torus it
Between be communicated with pipe 1-8, the bottom in the communication loop chamber, upper end of communicating pipe, the lower end of communicating pipe extend into heating chamber bottom.
Heating is filled with heat conduction with phase change medium 0-2-1 in chamber, and heat conduction with phase change medium is when temperature is increased to phase transition temperature
Being the material of liquid from solid state transformation, the heat conduction with phase change medium in the present embodiment is metallic tin.
Being filled with fluid heat carrier medium 0-2-2 in torus, fluid heat carrier medium is liquid heat conductive material, the present embodiment
In, the fluid heat carrier medium filled in torus is conduction oil, and the conduction oil of the present embodiment is that maximum operating temperature is not less than 360
DEG C conduction oil.
Light hot receiver is arranged in heating chamber；Light hot receiver is provided with cylinder blanket 2-1, is provided with in light hot receiver
Receiving the heat conduction cone 2-2 injecting light, the outer surface at photo-thermal receiver casing is provided with annular conducting strip 2-3, receives at photo-thermal
The two ends of device shell are provided with rectangle conducting strip 2-4, and conducting strip contacts with the heat conduction with phase change medium in heating chamber.Light hot receiver
Receive the light inputted by light guide 6.
The upper end of torus is provided with fluid heat carrier medium outlet 1-6, and it is defeated that fluid heat carrier medium outlet connects a thermal medium
Going out pipeline (5-1), the other end of thermal medium output pipe connects the heating medium inlet of heat energy utilization equipment；Under torus
End is provided with fluid heat carrier medium import 1-7, and fluid heat carrier medium import connects a reflux pipe (5-2), reflux pipe another
One end connects the Crude product input of heat energy utilization equipment.
Balance bunker is arranged on the platform higher than heat energy utilization equipment；Balance bunker is the cavity closed, upper at balance bunker
Portion is provided with gaseous state interface 3-1, is provided with liquid interface 3-2 in the lower end of balance bunker；It is provided with noble gas on the top in heating chamber to connect
Mouth 1-5, the gaseous state interface of balance bunker connects inert gas interface by being provided with the inert gas duct 4-1 of compressor 4；Balance bunker
Liquid interface exported by fluid heat carrier medium expiration and inspiration pipe 5-3 connection thermal medium at the peak of thermal medium output pipe
Pipeline.
Being filled with noble gas 0-3 in balance bunker, in the present embodiment, the noble gas in balance bunker is nitrogen.In balance
Fluid heat carrier medium is preserved in the bottom in storehouse.
Reflux pipe is provided with temperature sensor 5-4.
Embodiment two:
A kind of photo-thermal conversion method, described method is the photo-thermal conversion method of embodiment one photothermal conversion device；Described method bag
Include:
Such as Fig. 4, light hot receiver 2 receives the light source containing heat energy of light guide 6 input and produces heating chamber described in energy heats
In heat conduction with phase change medium 0-2-1, heat conduction with phase change medium is the metallic tin that heat-conductive characteristic is good, and heat conduction with phase change medium adds thermal potential
Fluid heat carrier medium 0-2-2 in the torus of top, the heat storage medium in thermal absorbs and stores partial heat energy simultaneously.
In the present embodiment, use the self-loopa heating heat energy utilization equipment that is heated of fluid heat carrier medium, when fluid heat-carrying is situated between
Matter (conduction oil) can flow up after being heated, and heated fluid heat carrier medium is defeated by heat energy by thermal medium output pipe 5-1
Delivering to heat energy utilization equipment 7, the fluid heat carrier medium completing heat energy utilization returns to described torus by reflux pipe 5-2
In, complete heat energy utilization circulation；
Such as Fig. 5, the phase transition temperature (or fusing point) as the stannum of heat conduction with phase change medium is 232 DEG C, when the temperature of heat conduction with phase change medium
Exceed (the present embodiment is when the temperature of heat conduction with phase change medium is higher than 300 DEG C) after phase transition temperature is changed into liquid, start compressor
4, and open ventilating control valve 4-2, the noble gas in balance bunker 3 is filled with in heating chamber, is formed at the top in heating chamber and fill
Air-casing 1-4, makes the heat conduction with phase change medium in heating chamber enter torus, the fluid heat-carrying in torus by communicating pipe 1-8
Medium enters balance bunker by the liquid interface of balance bunker lower end, after whole fluid heat carrier mediums enter balance bunker, closes
Compressor, stops inflating in heating chamber；Now heat conduction with phase change medium substitution fluid heat-carrying agent carries out heat energy utilization circulation.Phase
Become heat-conducting medium, by thermal medium output pipe 5-1, heat energy is delivered to described heat energy utilization equipment 7, complete the phase of heat energy utilization
Become heat-conducting medium and returned to the bottom of described torus by reflux pipe 5-2, complete heat energy utilization circulation.
Such as Fig. 6, when the temperature of described heat conduction with phase change medium reduces, (the present embodiment is less than when the temperature of heat conduction with phase change medium
When 250 DEG C), noble gas in heating chamber is returned to described flat before the temperature of heat conduction with phase change medium is reduced to phase transition temperature
In weighing apparatus storehouse, operational approach is, opens recycle control valve 4-3, and in heating chamber, noble gas is back in balance bunker, makes entrance circulate
Heat conduction with phase change medium back flow in chamber, to heating chamber, makes the fluid heat carrier medium in entrance balance bunker be back in torus, stream
Body heat-carrying agent substitutes heat conduction with phase change medium and carries out heat energy utilization circulation.Fluid heat carrier medium passes through thermal medium output pipe 5-1
Heat energy is delivered to described heat energy utilization equipment 7, and the fluid heat carrier medium completing heat energy utilization is returned to by reflux pipe 5-2
The bottom of described torus, completes heat energy utilization circulation.
Photothermal converter is to receive the high density sunlight focusing that the transmission of sunlight bounce transmission device comes, and is converted into heat
Can, while phase-transition heat-storage, it being conducted to fluid heat carrier medium, fluid heat carrier medium relies on self thermodynamic cycle, for Stirling
Electromotor automatic transport heat energy.
Housing 1 and the associated components thereof of photothermal converter are made by heating resisting metal material.
In the quiescent state, exocoel 1-1 fills ternary chlorine compound phase-change heat accumulation medium 0-1；Heating cavity of resorption 1-2 fills metallic tin
(or ashbury metal) 0-2-1, circulation epicoele 1-3 fill conduction oil 0-2-2；Indifferent gas gap 1-4 is then to be situated between in switching fluid heat-carrying
It is used for during matter accommodating compressed inert 0-3.
Light hot receiver 2 projects the photo-thermal energy of the high-energy focusing hot spot F come for receiving light heat transfer catheters transmitting terminal,
It is translated into medium and high temperature thermal energy conduction to heat conduction with phase change medium.
Light hot receiver 2 is the core component of photothermal converter.Light hot receiver 2 is cylindrical hermetic housing structure.Circle
Cylindricality enclosure is the absorption space of high-energy focusing hot spot F.It is to fill to put heat conduction with phase change outside cylindrical hermetic housing 2-1
The heating cavity of resorption 1-2 of medium 0-2-1.
Inside cylindrical hermetic housing 2-1, closely it is covered with the positive rib of multiaspect accepting high-energy focusing hot spot F along inner wall surface
Cone heat conduction cone 2-2, the cone of heat conduction cone 2-2 is directed to housing axle center；At the outside cylinder of cylindrical hermetic housing 2-1, along post
Face axially spaced-apart arranges annular conducting strip 2-3.In hull outside termination, it is arranged laterally at a spacing vertical rectangle conducting strip along end face
2-4.Housing is provided with taper photo-thermal and receives conduit 2-5, and photo-thermal receives conduit 2-5 and is welded as a whole with photothermal converter housing 1.
Metallic plasma magnetron sputtering technique process is carried out on the surface of polygonal prism cone heat conduction cone 2-2.Make polygonal prism
Cone heat conduction cone 2-2 Surface Creation optical absorption characteristics surface.To improve light thermal absorptivity, reduce photo-thermal reverse radiation.
The high-energy focusing hot spot F come because of light heat transfer catheters 6 projection has very high temperature.The polygonal prism of light hot receiver 2
Cone 2-2 must possess high temperature resistant, anti-yaw damper and low thermal resistance performance.
The light principle of light hot receiver 2: according to stealth technique principle, sunlight focuses on light beam and receives conduit 2-5 at photo-thermal
Interior along light transmission direction focusing project heat conduction cone 2-2 surface, wherein the overwhelming majority luminous energy be heat energy by sorption enhanced.On a small quantity
Luminous energy is reflected by heat conduction cone 2-2 surface.Because the intensive layout of 2-2 is bored in multiple heat conduction, the luminous energy reflected by heat conduction cone 2-2 surface is only
Until being absorbed totally by heat conduction cone 2-2, heat energy can be converted at each heat conduction cone 2-2 surface interreflection.And seldom can be reverse
Return incident direction.
Light heat ray through pole multiple reflections, makes light hot receiver 2 inner chamber be formed close to optical black on heat conduction cone 2-2
Degree of depth grey body；Because arranging multiple heat conduction cone 2-2 light hot receiver 2 inner chamber is intensive, thus increase optical heat radiation heating surface
Long-pending；Reduce heat transfer interface thermal resistance, thus improve heat transfer efficiency.
The heat conduction principle of light hot receiver 2: the high density from light heat transfer catheters 6 focuses on light beam through light heat transfer catheters
The high-energy focusing hot spot F that 2-5 passage pools in focus is radiated in polygonal prism cone 2-2, because multiple heat conduction cone 2-2 has very
High surface area, overwhelming majority light heat ray is absorbed by heat conduction cone 2-2 after forming medium and high temperature heat energy, by conducting strip (2-3,2-4)
It is conducted to metallic tin (or ashbury metal) 0-2-1.
The money saving function of heat energy: for making hot systems keep stable, the operating mode of equilibrium, photothermal converter is provided simultaneously with accumulation of heat merit
Energy.Heat accumulation function is realized in phase transition temperature experience solid-liquid state change by ternary chlorine compound.
Ternary chlorine compound is mixed according to a certain percentage by potassium chloride, sodium chloride and magnesium chloride, is allowed to phase transition temperature close
400°C.So that its near this temperature by solidification, fusing expiration and inspiration heat energy, maintain unit temp stable.
Self thermodynamic cycle transporting heat energy of binary fluid heat-carrying agent (including 0-2-1,0-2-2): for making solar energy adopt
The heat energy that collection transmitting device collects realizes wide temperature range (low temperature-middle temperature-high temperature) transmission, improves the thermodynamics effect of thermal power machinery
Rate, reduces the kinetic energy consumption of heat energy conveying, maintains hot systems stable operation.Photothermal conversion device uses conduction oil 0-2-2 and gold
Belong to stannum (or ashbury metal) 0-2-1 binary fluid heating agent conveying heat energy.Make the whole hot systems can be from room temperature to 1200C °
Normally work in wide temperature province, gather and at fluid heat carrier medium 0-2 under different illumination conditions adapting to whole hot systems
Transporting heat energy during different temperatures.Device can use conduction oil 0-2-2 at the interval fluid heat carrier medium of temperature low, middle (less than 400C °)；
Metallic tin (or ashbury metal) 0-2-1 can be used at the interval fluid heat carrier medium 0-2 of high temperature (higher than 300C °).300C ° to 400C °
Between be two kinds of fluid heat carrier medium handover operation temperature ranges.Two kinds of fluid heat carrier medium handover operation temperature ranges of system
It is as the criterion with the temperature measured by temperature sensor 5-4.
Because binary fluid heat-carrying agent is to realize switching with indifferent gas under photothermal converter inner sealing environment, therefore conduction oil
0-2-2 and metallic tin (or ashbury metal) 0-2-1 will not occur oxidation deterioration.
The system operation logic of photothermal converter: under room temperature state, the middle temperature phase change heat storage material in photothermal converter
Ternary chlorine compound 0-1 and metallic tin (or its alloy) 0-2-1 are solid-state, and conduction oil 0-2-2 is liquid.
When light hot receiver accepts and spreads out of heat energy, directly heat metallic tin (or its alloy) 0-2-1 at heating chamber 1-2.
Metallic tin (or its alloy) 0-2-1 heat up after simultaneously by thermal energy conduction to ternary chlorine compound 0-1 in accumulation of heat exocoel 1-1 and circulation
Conduction oil 0-2-2 in epicoele 1-3.When conduction oil 0-2-2 reaches uniform temperature, start along circulating line setting path from
Move and circulate.Send out electromotor for Stirling and uninterruptedly carry heat.
When reaching metallic tin melt temperature through conduction oil 0-2-2 heating, first metallic tin (or its alloy) 0-2-1 melts
Accumulation of heat also has mobility simultaneously.When circulating heat conduction oil 0-2-2 temperature stabilization higher than metallic tin (or its alloy) 0-2-1 fusing point with
During upper uniform temperature, start compressor (inertia air pump) 4, aspirate the noble gas 0-3 in balance bunker 3 and pass through inert gas tube
Road 4-1 compresses into the indifferent gas gap 1-4 in the 1-2 of heating chamber.It is expressed to metallic tin (or its alloy) 0-2-1 circulate epicoele 1-
3, take over conduction oil 0-2-2 Automatic Cycle conveying heat.The system that realizes in middle temperature and is progressively transitioned under the condition of high temperature operation.Quilt
The conduction oil 0-2-2 displaced is forced in balance bunker 3 by metallic tin (or its alloy) 0-2-1.
When metallic tin (or its alloy) 0-2-1 reaches 400 C °, ternary chlorine compound 0-1 in thermal 1-1 start by
Step melts heat absorption, saves peak value heat energy.
After ternary chlorine compound 0-1 in thermal 1-1 is all melted, system temperature continues to raise, in maintaining system certainly
Temperature is also progressively transitioned into condition of high temperature operation.
When the external world reduces to heat, and when system temperature is less than 400 C °, the first heat release of ternary chlorine compound 0-1 solidifies, solidification
Institute's liberated heat is for continue heat supply with hot spot, and maintenance system is run at middle temperature state；Temperature be reduced to metallic tin (or its
Alloy) before 0-2-1 freezing point, system is switched to conduction oil 0-2-2 circulation pattern.This is kept by the mode of switching thermal medium
Special woods electromotor and whole hot systems are in wide temperature range stable operation.
The compression indifferent gas 0-3 that binary fluid thermal medium 0-2 in photothermal converter provides with compressor 1-4 promotes metal
Mutual switchover operation between stannum (or its alloy) 0-2-1 and conduction oil 0-2-2 two medium.
For reducing thermal loss, photothermal converter and relevant armamentarium thereof, pipeline must tightly arrange effectively insulating
Layer.
Photothermal converter must be placed lower than the position of the conjuncted machine of Stirling generating-heat pump；Balance bunker 3 and compressor 4 palpus
It is arranged on the position higher than photothermal converter and Stirling engine.
Because the position of photothermal converter is far below Stirling engine expanding end heater 7, therefore fluid heat carrier medium is through light
After hot receiver 2 adds thermal expansion, rely on self heat power to high bit flow, at the expanding end heater entering Stirling engine
After 7, convert heat into mechanical energy contraction of lowering the temperature.Because Stirling engine expanding end heater 7 is in a high position, therefore cooling is received
Self heat power of fluid heat carrier medium after contracting reduces and settles to low level.After flowing through photothermal converter accumulation heat, then connect
Light hot receiver 2 heats and enters subsequent cycle.
The potential difference that fluid heat carrier medium disposes by equipment, utilizes hot, forms self heat power to the thermogenetic temperature difference
Circulation.Thoroughly break away from outer powered.Both can reduce power consumption, be avoided that again because power-equipment abrasion and occur leakage and
Mechanical breakdown.Thus realize the economy of hot systems device external power-free, safety, long-acting operation.
Claims (10)
1. a photothermal conversion device, converts light energy into heat energy and is supplied to heat energy utilization equipment (7), it is characterised in that be described
Photothermal conversion device includes housing (1), light hot receiver (2), balance bunker (3)；Described housing is provided with the double of inner shell and shell
Layer housing, constitutes the thermal (1-1) of closing between described inner shell and shell, is filled with heat storage medium in described thermal
(0-1)；Be provided with in the bottom of described inner shell heating chamber (1-2), be provided with torus (1-3) on the top of described inner shell, described in add
Being communicated with between hot chamber and torus managing (1-8), the upper end of described communicating pipe connects the bottom of described torus, described connection
The lower end of pipe extend into the bottom in described heating chamber；Described heating chamber is filled with heat conduction with phase change medium (0-2-1), described phase transformation
Heat-conducting medium is to be the material of liquid when temperature is increased to phase transition temperature from solid state transformation, is filled with fluid in described torus
Heat-carrying agent (0-2-2)；Described smooth hot receiver is arranged in described heating chamber；The upper end of described torus connects a heat and is situated between
Matter output pipe (5-1), the other end of described thermal medium output pipe connects the thermal medium entrance of described heat energy utilization equipment, institute
The lower end stating torus connects a reflux pipe (5-2), and the other end of described reflux pipe connects described heat energy utilization equipment
Thermal medium outlet；Described balance bunker is the cavity closed, and is provided with gaseous state interface on the top of described balance bunker, in described balance
The lower end in storehouse is provided with liquid interface, and described gaseous state interface heats the top in chamber by being provided with described in the pipeline communication of compressor (4),
Thermal medium output pipe described in described liquid orifice, is filled with noble gas in described balance bunker, at described balance bunker
Described fluid heat carrier medium is preserved in bottom.
A kind of photothermal conversion device the most according to claim 1, it is characterised in that the position of described housing is less than described heat
Can utilize equipment, the position of described balance bunker is higher than described heat energy utilization equipment.
A kind of photothermal conversion device the most according to claim 1, it is characterised in that be provided with reception in described smooth hot receiver
Injecting heat conduction cone (2-2) of light, the outer surface at described smooth hot receiver is provided with conducting strip (2-3,2-4), described conducting strip
Contact with the heat conduction with phase change medium in described heating chamber.
A kind of photothermal conversion device the most according to claim 1, it is characterised in that be provided with temperature on described reflux pipe
Sensor (5-4).
A kind of photothermal conversion device the most according to claim 1, it is characterised in that the accumulation of heat filled in described thermal is situated between
Matter (0-1) is phase-change heat accumulation medium, and described phase-change heat accumulation medium includes ternary chlorine compound；Noble gas in described balance bunker is
Nitrogen.
A kind of photothermal conversion device the most according to claim 1, it is characterised in that the phase transformation filled in described heating chamber is led
Thermal medium (0-2-1) is metallic tin.
A kind of photothermal conversion device the most according to claim 1, it is characterised in that the fluid filled in described torus carries
Thermal medium (0-2-2) is conduction oil.
A kind of photothermal conversion device the most according to claim 1, it is characterised in that described heat energy utilization equipment (7) is this
Special woods engine expansion end heater.
9. a photo-thermal conversion method, described method is the photo-thermal of the photothermal conversion device described in claim 1 to 7 any one
Conversion method；It is characterized in that, described method includes:
Described smooth hot receiver (2) receives the light source containing heat energy and produces the heat conduction with phase change in heating chamber described in energy heats
Medium (0-2-1), described heat conduction with phase change medium heats the fluid heat carrier medium (0-2-2) in described torus, the most described storage
Heat storage medium (0-1) in hot chamber absorbs and stores heat energy；
Heat energy is delivered to described heat energy utilization equipment by thermal medium output pipe (5-1) by heated fluid heat carrier medium
(7) fluid heat carrier medium, completing heat energy utilization returns to by reflux pipe (5-2) bottom of described torus, complete heat
Circulation can be utilized；
When the temperature of described heat conduction with phase change medium exceedes after phase transition temperature is changed into liquid, start compressor (4), by described balance
Noble gas in storehouse (3) is filled with in heating chamber, forms inflation interlayer (1-4) at the top in described heating chamber, makes in heating chamber
Heat conduction with phase change medium by described communicating pipe (1-8) entering described torus, the fluid heat carrier medium in described torus leads to
The liquid interface of lower end, overbalance storehouse enters balance bunker, and after whole fluid heat carrier mediums enter balance bunker, described phase transformation is led
Heat energy is delivered to described heat energy utilization equipment (7) by thermal medium output pipe (5-1) by thermal medium, completes the phase of heat energy utilization
Become heat-conducting medium and returned to the bottom of described torus by reflux pipe (5-2), complete heat energy utilization circulation；
When the temperature of described heat conduction with phase change medium reduces, will add before the temperature of heat conduction with phase change medium is reduced to phase transition temperature
During noble gas is returned to described balance bunker in hot chamber, make the described heat conduction with phase change medium back flow in entrance torus to heating
Chamber, makes the described fluid heat carrier medium in entrance balance bunker be back in torus, and fluid heat carrier medium is exported by thermal medium
Heat energy is delivered to described heat energy utilization equipment (7) by pipeline (5-1), and the fluid heat carrier medium completing heat energy utilization passes through return duct
Road (5-2) returns in described torus, completes heat energy utilization circulation.
A kind of photo-thermal conversion method the most according to claim 9, it is characterised in that described heat conduction with phase change medium is metal
Stannum, starts compressor, is filled with by the noble gas in described balance bunker when the temperature of described heat conduction with phase change medium is higher than 300 DEG C
In heating chamber；When the temperature of described heat conduction with phase change medium is less than 250 DEG C, noble gas in heating chamber is returned to described balance
In storehouse；
Described temperature sensor (5-4) detects the temperature of described heat conduction with phase change medium.
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