CN100545449C - Utilize the thermo-acoustic engine system of temperature-variable heat source - Google Patents
Utilize the thermo-acoustic engine system of temperature-variable heat source Download PDFInfo
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- CN100545449C CN100545449C CNB2007100987367A CN200710098736A CN100545449C CN 100545449 C CN100545449 C CN 100545449C CN B2007100987367 A CNB2007100987367 A CN B2007100987367A CN 200710098736 A CN200710098736 A CN 200710098736A CN 100545449 C CN100545449 C CN 100545449C
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/002—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using the energy of vibration of fluid columns
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2243/00—Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by volume changes
- F02G2243/30—Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by volume changes having their pistons and displacers each in separate cylinders
- F02G2243/50—Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by volume changes having their pistons and displacers each in separate cylinders having resonance tubes
- F02G2243/54—Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by volume changes having their pistons and displacers each in separate cylinders having resonance tubes thermo-acoustic
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Abstract
The invention provides a kind of thermo-acoustic engine system that utilizes temperature-variable heat source, comprise resonatron, the mechanical energy output unit is arranged on the described resonatron, at least two-stage row ripple loop, all shared described resonatrons of capable ripple loop, each described capable ripple loop has high-temperature heat-exchanging, described high-temperature heat-exchanging has inlet opening and the delivery outlet that is used for the input and output of heat transport fluid medium, the described high-temperature heat-exchanging delivery outlet of previous stage row ripple loop is connected with the described high-temperature heat-exchanging inlet opening of back one-level row ripple loop, and the operating temperature of the described high-temperature heat-exchanging of the described row of two-stage at least ripple loop begins to reduce successively to back one-level row ripple loop from previous stage row ripple loop.The present invention has improved the conversion efficiency of heat and has been of compact construction.
Description
Technical field
The present invention relates to thermoacoustic engine, particularly utilize the thermo-acoustic engine system of temperature-variable heat source.
Background technique
Thermoacoustic engine is that a kind of thermoacoustic effect that utilizes is with the energy conversion device of thermal power transfer for acoustic energy, it has the following advantages: do not have moving element in the system, conventional mechanical ubiquitous wearing and tearing of institute and vibration have fundamentally been eliminated, stable and reliable operation, long service life; Use hotwork to be the energy, can utilize solar energy, used heat etc. as driving source, this is very meaningful for solving adynamic problem from far-off regions; As working medium, help environmental protection with inert gas, so have boundless development prospect.At present, the heat sound conversion efficiency of traveling wave thermoacoustic engine has reached 30%, near the conversion efficiency of internal-combustion engine.
In nature and engineering application, the main at present two class thermal source carriers that exist: a class thermal source carrier is a solid dielectric, and another kind of thermal source carrier is a flowing medium.For the solid thermal source carrier, the utilization of its heat can be carried out under fixing temperature, for example, utilizes solar energy or isotope active material etc. to the solid heating and maintain certain thermal equilibrium temperature.For the heat source fluid carrier, the utilization of its heat embodies under the temperature that changes often, i.e. the acquisition of heat often needs the cooling of fluid to realize.Present thermo-acoustic engine system is at the fixed temperature heat-carrying agent.Fig. 1 is existing traveling wave thermoacoustic engine structural representation, and it mainly is made up of a capable ripple loop 5 and a resonatron 6.Row ripple loop high-temperature heat-exchanging 2 must maintain certain temperature, and the regenerator 1 between it and the room temperature heat exchanger 3 could keep certain temperature gradient like this, and system could work.Keeping high-temperature heat-exchanging 2, to be in the method for constant high temperature a lot, such as adopting electric heater or the like.But under the situation that adopts the heat source fluid carrier, high-temperature heat-exchanging can not be kept stationary temperature, all be to obtain high-temperature flue gas by fuel combustion to form the heat source fluid carrier, enter from the inlet of high-temperature heat-exchanging, the heat exchange of high-temperature flue gas in high-temperature heat-exchanging provides heat for thermoacoustic engine, and the temperature of the heat transport fluid medium after the heat exchange reduces and discharges through the outlet of high-temperature heat-exchanging.In this case, present thermo-acoustic engine system just can not utilize the heat of heat transport fluid medium expeditiously, if the temperature such as high-temperature flue gas is about 1000 ℃, the design mean temperature of high-temperature heat-exchanging is about 950 ℃, the temperature that flue gas flows out high-temperature heat-exchanging is about 900 ℃, and flue gas heat only has been utilized a very little part so, and the overwhelming majority will be discharged, be not utilized, caused great energy loss.Therefore, just wish to have and a kind ofly can make full use of the heat of heat transport fluid, the thermo-acoustic engine system of raising the efficiency.
Summary of the invention
The objective of the invention is to overcome present thermoacoustic engine and when utilizing temperature-variable heat source, have the deficiency that in full force and effectly to utilize heat, a kind of thermo-acoustic engine system that utilizes temperature-variable heat source is provided.
For this reason, the invention provides a kind of thermo-acoustic engine system that utilizes temperature-variable heat source, comprise resonatron, the mechanical energy output unit is arranged on the described resonatron; Also comprise two-stage row ripple loop at least, all shared described resonatrons of capable ripple loop, each described capable ripple loop has high-temperature heat-exchanging, described high-temperature heat-exchanging has inlet opening and the delivery outlet that is used for the input and output of heat transport fluid medium, the described high-temperature heat-exchanging delivery outlet of previous stage row ripple loop is connected with the described high-temperature heat-exchanging inlet opening of back one-level row ripple loop, and the operating temperature of the described high-temperature heat-exchanging of the described row of two-stage at least ripple loop reduces to back one-level row ripple loop successively from previous stage row ripple loop.
The present invention installs two or more capable ripple loops on the resonatron of traveling wave thermoacoustic engine, the design temperature of the high-temperature heat-exchanging on each row ripple loop has nothing in common with each other, design temperature from the previous stage loop backward one-level successively decrease successively; The high-temperature heat-exchanging that heat transport fluid flows into loops at different levels successively carries out heat exchange, and motor can absorb the heat of heat transport fluid at different temperature sections.
In technique scheme, described capable ripple loop is communicated with in proper order by feedback pipe, first cryogenic heat exchanger, regenerator, described high-temperature heat-exchanging, thermal buffer channel and second cryogenic heat exchanger and constitutes, and described capable ripple loops at different levels are connected with shared described resonatron at separately the second cryogenic heat exchanger place and in the outside of described thermal buffer.
In technique scheme, described capable ripple loops at different levels also comprise cryogenic heat exchanger and feedback pipe, between described high-temperature heat-exchanging and described cryogenic heat exchanger, be provided with regenerator and thermal buffer, a dividing plate is arranged between described regenerator and the described thermal buffer, the described cryogenic heat exchanger of described dividing plate extend past and in the outside of described cryogenic heat exchanger as the wall of described feedback pipe.
In technique scheme, the shared cryogenic heat exchanger of described capable ripple loops at different levels also also comprises regenerator and thermal buffer channel respectively, the high-temperature heat-exchanging of previous stage row ripple loop, regenerator and shared cryogenic heat exchanger around the space in back one-level row ripple loop is set.
In technique scheme, on the two ends of described resonant cavity, be connected with the described row of two-stage at least ripple loop respectively.
In technique scheme, the described thermal buffer channel of described capable ripple loops at different levels coaxially is in the inside of described regenerator.
In technique scheme, the multistage capable ripple loop of all row ripple loops formation circumference symmetric figures is nested, all described regenerators, described thermal buffer channel and described feedback pipe coaxial arrangement.
In technique scheme, capable ripple loops at different levels also comprise regenerator and a shared cryogenic heat exchanger, and the high-temperature heat-exchanging of all capable ripple loops forms an integral high-temperature heat exchanger, and described integral high-temperature heat exchanger is arranged on the inside of described regenerator.
In technique scheme, described integral high-temperature heat exchanger is formed by at least one fluid conduit systems, is arranged on the inside of described regenerator.
In technique scheme, described regenerator is bent to the shape of the cylinder with hollow portion, described system also comprises thermal buffer channel, described thermal buffer channel coaxially is arranged on the hollow portion of described regenerator, described thermal buffer channel is divided at least two sections in the axial direction, have and be used to make working gas to enter into the gap of described thermal buffer channel between described section and section, described gap width is more than or equal to one of percentage of described thermal buffer channel length.
Compared with prior art, the present invention has following technique effect:
1, the present invention adopts the capable ripple loop of at least two different operating temperature, and engine system can absorb the heat of heat transport fluid at different temperature sections, has improved the conversion efficiency of heat;
2, the present invention adopts at least two coaxial or nested arrangement of capable ripple loop, makes engine system be of compact construction when having high conversion efficiency.
Description of drawings
Fig. 1 is the traveling wave thermoacoustic engine of a typical prior art conventional construction;
Fig. 2 is a thermo-acoustic engine system schematic representation in one embodiment of the invention, is the traveling wave thermoacoustic engine system that the temperature-variable heat source of three capable ripple loops is housed;
Fig. 3 is certain one-level row ripple loop schematic representation of thermo-acoustic engine system in one embodiment of the invention;
Fig. 4 is the schematic representation of the traveling wave thermoacoustic engine system of temperature-variable heat source that five capable ripple loops are housed in one embodiment of the invention, and capable ripple loop structure of each level wherein as shown in Figure 3;
Fig. 5 is the traveling wave thermoacoustic engine system of the temperature-variable heat source of symmetric arrangement in one embodiment of the invention;
Fig. 6 is for being equipped with the traveling wave thermoacoustic engine system of the temperature-variable heat source of six capable ripple loops in one embodiment of the invention;
Fig. 7 is the traveling wave thermoacoustic engine system of temperature-variable heat source coaxial in one embodiment of the invention;
Fig. 8 (a)-(c) is for being equipped with the traveling wave thermoacoustic engine system of the temperature-variable heat source of four capable ripple loops in one embodiment of the invention; Wherein Fig. 8 (a) represents that coaxial and high-temperature heat-exchanging is arranged on the traveling wave thermoacoustic engine system of the temperature-variable heat source of regenerator inside; The thermo-acoustic engine system of Fig. 8 (b) expression present embodiment can be regarded the thermoacoustic engine of four coaxial construction equivalently as; Fig. 8 (c) expression is along the sectional drawing of A-A line among Fig. 8 (b).
The reference character Schedule:
The 1----regenerator, the 2----high-temperature heat-exchanging, the 3----cryogenic heat exchanger,
The 4----thermal buffer channel, 5----feeds back pipe, the 6----resonatron,
The 7----end face, the 8----gap, the 9----inlet opening,
The 10----delivery outlet.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Understand the present invention for the ease of the technician, before providing specific embodiments of the invention, the multistage capable ripple loop of the different temperatures work that is installed on the resonatron of thermoacoustic engine that the present invention is proposed is realized the heat energy ladder, to raise the efficiency.To make an explanation to it theoretically below.
Supposing to have quality is the heat transport fluid of m, and its temperature is 1000K, and specific heat capacity is C
p, room temperature heat exchange temperature T
0Be 300K.If only design on the thermoacoustic engine a capable ripple loop arranged, the average design temperature of hot end heat exchanger is 950K, the temperature of heat transport fluid after outflow heat exchanger is 900K, and the thermal efficiency of thermoacoustic engine equals Carnot efficiency, and then total merit can changing out of this thermoacoustic engine can be expressed as:
If two capable ripple loops are installed on traveling wave thermoacoustic engine, allow the heat transport fluid that flows out from the heat exchanger of first order loop flow into the heat exchanger of second level loop again, and the average design temperature of the high-temperature heat-exchanging of second level loop is 850K, the temperature that fluid flows out is 800K, and then the loop sound merit that can change out again in the second level is:
So behind the loop that two different designs temperature have been installed, total the merit that same heat transport fluid can be changed out become 133.1mC
p, efficient greatly improves.
Same, if the 3rd capable ripple loop is installed, the hot end heat exchanger design temperature is 750K, and the temperature of fluid outflow is 700K, and then the sound merit that can change out again of third level loop is:
So behind the loop that three different designs temperature have been installed, total the merit that same heat transport fluid can be changed out become 193.1mC
p, efficient rises again to some extent.
Under limit case, n capable ripple loop is installed on the thermoacoustic engine, the design temperature of first row ripple loop is 1000K, the design temperature of last row ripple loop is 400K (this temperature should be higher than the temperature of shaking that opens of motor), the temperature difference of each loop is 600/n, and total the merit amount of then should heat sound starting to change out is:
When n → ∞, W
Always=325.11mC
p, this moment, the utilization efficiency of heat energy of system reached capacity.
Above calculation specifications utilize heat energy can improve the utilization ratio of thermoacoustic engine heat energy by multistage capable ripple loop cascade.Further describe the present invention below in conjunction with embodiment.
Embodiment 1:
As shown in Figure 2, as an example, three capable ripple loops on the resonatron of thermo-acoustic engine system, have been connected.With first row ripple loop of left side shown in scheming is that first order row ripple loop is an example, the project organization of each row ripple loop is: connect feedback pipe 5, cryogenic heat exchanger 3 (such as adopting the room temperature heat exchanger 3 that carries out exchange heat with room temperature), regenerator 1, high-temperature heat-exchanging 2, thermal buffer channel 4 successively from resonatron 6 beginnings, the other end of thermal buffer channel 4 is such as linking to each other with resonatron 6 by another same cryogenic heat exchanger 3.Each grade high-temperature heat-exchanging all has inlet opening 9 and the delivery outlet 10 that is used for the input and output of heat transport fluid medium, and the high-temperature heat-exchanging delivery outlet 10 of first order row ripple loop is connected with the high-temperature heat-exchanging inlet opening of second level row ripple loop, the rest may be inferred, and the high-temperature heat-exchanging delivery outlet of penultimate stage row ripple loop is connected with the high-temperature heat-exchanging inlet opening of the capable ripple loop of afterbody; The operating temperature of high-temperature heat-exchanging begins to the end from first order row ripple loop, and one-level row ripple loop reduces successively; Because the optimum-size of each parts of row ripple loop is relevant with the design temperature of high-temperature heat-exchanging, so the size of each loop is different, the design of finishing each loop size is that those skilled in the art can be competent at.The average heat exchange temperature of the high-temperature heat-exchanging design of first order row ripple loop is about 600 ℃, and partial average heat exchange temperature is about 500 ℃, and the average heat exchange temperature of the third level is about 400 ℃.The temperature that heat transport fluid flows into first order high-temperature heat-exchanging is 650 ℃, temperature during outflow is 550 ℃, enter the high-temperature heat-exchanging of second level loop subsequently, temperature when flowing out second level high-temperature heat-exchanging is 450 ℃, and then heat transport fluid enters the high-temperature heat-exchanging of third level loop again, and through after the heat exchange, the temperature of heat transport fluid has been reduced to 350 ℃, discharge heat transport fluid this moment again, the heat of loss greatly reduces.Adopt the thermo-acoustic engine system of present embodiment just can improve the utilization ratio of temperature-variable heat source greatly such as the heat of heat transport fluid.
Embodiment 2:
Single-stage traveling wave thermoacoustic engine among Fig. 1 also can be designed to structure shown in Figure 3.In Fig. 3, regenerator 1, thermal buffer channel 4, feedback pipe 5 and resonatron 6 have adopted square structure, regenerator 1 and thermal buffer channel 4 are set between high-temperature heat-exchanging 2 and cryogenic heat exchanger 3, separate by a dividing plate between regenerator 1 and the thermal buffer channel 4, this dividing plate extend past cryogenic heat exchanger 3, and in the outside of cryogenic heat exchanger 3 as the madial wall of feedback pipe 5, the outer side wall of feedback pipe 5 is to be formed by the monolithic case that constitutes capable ripple loop.As shown in Figure 4, for the structure that makes a plurality of capable ripple loops is more compact, the dividing plate of multistage capable ripple loop is linked to be an integral body.Single loop adopts after the structure shown in Figure 3, a plurality of capable ripple loops can be installed together compactly, and as shown in Figure 4, and the room temperature heat exchanger 3 of each loop and high-temperature heat-exchanging 2 can directly link together the structure that is made of one.Each grade high-temperature heat-exchanging all has inlet opening and the delivery outlet that is used for the input and output of heat transport fluid medium, and the high-temperature heat-exchanging delivery outlet of first order row ripple loop is connected with the high-temperature heat-exchanging inlet opening of second level row ripple loop, the rest may be inferred, and the high-temperature heat-exchanging delivery outlet of penultimate stage row ripple loop is connected with the high-temperature heat-exchanging inlet opening of the capable ripple loop of afterbody; In the present embodiment, it is very short that being used between the high-temperature heat-exchangings at different levels carried the linkage structure of heat transport fluid, can make generally the two-stage high-temperature heat-exchanging near, in high-temperature heat-exchanging 2, heat transport fluid is flowed toward more senior loop direction by first order loop, carrying out along with heat exchange in high-temperature heat-exchanging 2, the temperature of heat transport fluid will progressively descend, the hot-side temperature of the close high-temperature heat-exchanging 2 of regenerators 1 at different levels so also will progressively reduce, and common Pyatyi row ripple loop has been shown among Fig. 4.The temperature that enters high-temperature heat-exchanging 2 such as heat transport fluid is 1000 ℃, and the temperature that flows out the capable ripple of afterbody loop high-temperature heat-exchanging is 400 ℃.The design of present embodiment can also make structure simple more compact when making full use of heat.
Embodiment 3:
As shown in Figure 5, the regenerator 1 of each in the present embodiment grade, high-temperature heat-exchanging 2, thermal buffer channel 4, feedback pipe 5 and shared cryogenic heat exchanger have adopted square structure, but the regenerator of previous stage and thermal buffer channel are not close but form certain space away from each other and with high-temperature heat-exchanging and shared cryogenic heat exchanger as different from Example 2, the high-temperature heat-exchanging that in this space, holds the back one-level, regenerator and thermal buffer channel, regenerator at different levels is in the same place with thermal buffer channel is adjacent, and shared same cryogenic heat exchanger 3, the loop of back one-level is wrapped in the loop inside of previous stage, separate by dividing plate between the regenerator of each grade, dividing plate extends a part to the resonant cavity 6 interior walls that form feedback pipes 5 at different levels, and such structure also is compact.Another characteristics of present embodiment have also been arranged multistage capable ripple loop same as described above at the other end of resonatron, and such symmetric arrangement can reduce the vibration of system effectively, reduce noise.Each grade high-temperature heat-exchanging all has inlet opening (such as the surface, top that is positioned at high-temperature heat-exchanging can be set) and the delivery outlet (such as the surface below that is positioned at high-temperature heat-exchanging can be set) that is used for the input and output of heat transport fluid medium, and the high-temperature heat-exchanging delivery outlet of first order row ripple loop is connected by connecting tube with the high-temperature heat-exchanging inlet opening of second level row ripple loop, the rest may be inferred, and the high-temperature heat-exchanging delivery outlet of penultimate stage row ripple loop is connected by connecting tube with the high-temperature heat-exchanging inlet opening of the capable ripple loop of afterbody; The operating temperature of high-temperature heat-exchanging begins to the end from first order row ripple loop, and one-level row ripple loop reduces successively; Every end of resonant cavity shows level Four row ripple loop among the figure, the operating temperature that designs every grade is respectively 500 ℃ such as the mean temperature that is the high-temperature heat-exchanging of the loop from the first order to the fourth stage, 400 ℃, 300 ℃, 200 ℃, the initial temperature of heat transport fluid is 550 ℃, and is every through 100 ℃ of its temperature declines of a high-temperature heat-exchanging, temperature when flowing out last high-temperature heat-exchanging is 150 ℃, has so just improved the utilization ratio of thermal source greatly.In addition, as shown in Figure 5, be to tilt to install that the benefit of doing like this is exactly the area of contact that has increased regenerator and high-temperature heat-exchanging and cryogenic heat exchanger, helps heat exchange more being connected between regenerators at different levels and high-temperature heat-exchanging and the cryogenic heat exchanger.
Embodiment 4:
As shown in Figure 6, in the present embodiment, on the resonatron of motor, connected the capable ripple loop of 6 coaxial configurations.First order row ripple loop with left side in scheming is an example, the project organization of the capable ripple loop of each coaxial configuration is: connect feedback pipe 5, cryogenic heat exchanger 3, regenerator 1, high-temperature heat-exchanging 2 successively from resonatron 6 beginnings, thermal buffer channel 4 is arranged on regenerator 1 inner installation coaxial with it, and the two ends of thermal buffer channel 4 link to each other with cryogenic heat exchanger 3 with high-temperature heat-exchanging 2 respectively.Each grade high-temperature heat-exchanging all has inlet opening (such as the left side that the figure that is arranged in high-temperature heat-exchanging can be set) and the delivery outlet (such as the right side that the figure that is positioned at high-temperature heat-exchanging can be set) that is used for the input and output of heat transport fluid medium, and the high-temperature heat-exchanging delivery outlet of first order row ripple loop is connected by connecting tube with the high-temperature heat-exchanging inlet opening of second level row ripple loop, the rest may be inferred, and the high-temperature heat-exchanging delivery outlet of penultimate stage row ripple loop is connected by connecting tube with the high-temperature heat-exchanging inlet opening of the capable ripple loop of afterbody; The operating temperature of high-temperature heat-exchanging begins to the end from first order row ripple loop, and one-level row ripple loop reduces successively, the operating temperature of capable ripple loops at different levels is designed to be respectively 900 ℃ such as the mean temperature from the high-temperature heat-exchanging of the loop of six grades of the first order to the, 800 ℃, 700 ℃, 600 ℃, 500 ℃, 400 ℃, the initial temperature of heat transport fluid is 950 ℃, every through 100 ℃ of its temperature declines of a high-temperature heat-exchanging, temperature when flowing out last high-temperature heat-exchanging is 350 ℃, and the thermoacoustic engine that this coaxial capable ripple loop cascade forms has not only improved the utilization ratio of thermal source greatly, and multistage loop common resonant pipe makes the total compactness.
Embodiment 5:
As shown in Figure 7, be the form of a plurality of capable ripple loop coaxial arrangement, i.e. all regenerators 1, thermal buffer channel 4 and feedback pipe 5 coaxial arrangement.The regenerator 1 of first order loop and feedback pipe 5 are positioned at the outermost surface of whole coaxial configuration, and the thermal buffer channel 4 of first order loop is positioned at the bosom of whole coaxial configuration; The regenerator of back one-level loop and feedback pipe are positioned at the inside of previous stage loop, and then the thermal buffer channel of one-level loop is positioned at the skin of previous stage loop, and multistage so capable ripple loop forms nested form.Compare Fig. 5 and 6, this structure is obviously compact more.Each grade high-temperature heat-exchanging all has inlet opening (such as the surface, top that is positioned at high-temperature heat-exchanging can be set) and the delivery outlet (such as the surface below that is positioned at high-temperature heat-exchanging can be set) that is used for the input and output of heat transport fluid medium, and the high-temperature heat-exchanging delivery outlet of first order row ripple loop is connected by the pipeline (not shown) with the high-temperature heat-exchanging inlet opening of second level row ripple loop, the rest may be inferred, and the high-temperature heat-exchanging delivery outlet of penultimate stage row ripple loop is connected with the high-temperature heat-exchanging inlet opening of the capable ripple loop of afterbody; The operating temperature of high-temperature heat-exchanging begins to the end from first order row ripple loop, and one-level row ripple loop reduces successively, such as for the level Four loop among Fig. 7, the mean temperature of the high-temperature heat-exchanging of the loop from the first order to the fourth stage is respectively 900 ℃, 800 ℃, 700 ℃, 600 ℃, the initial temperature of heat transport fluid is 950 ℃, every through 100 ℃ of its temperature declines of a high-temperature heat-exchanging, the temperature when flowing out last cryogenic heat exchanger is 550 ℃.In addition, as shown in Figure 7, be to tilt to install that the benefit of doing like this is exactly the area of contact that has increased regenerator and high-temperature heat-exchanging and cryogenic heat exchanger, helps heat exchange more being connected between regenerators at different levels and high-temperature heat-exchanging and the cryogenic heat exchanger.
Embodiment 6:
Shown in Fig. 8 (b), row ripple loop is a coaxial configuration in the present embodiment, connect feedback pipe 5, shared cryogenic heat exchanger 3, regenerator 1 successively from resonatron 6 beginning, regenerator 1 is the shape that is bent to the cylinder with hollow portion, and thermal buffer channel 4 coaxially is arranged on the hollow portion of regenerator 1; High-temperature heat-exchanging 2 adopt the form of fluid conduit systems make fluid by and carry out heat exchange with regenerator 1, this fluid conduit systems enters regenerator 1 from an end of regenerator 1, after passing regenerator 1, the other end at regenerator 1 comes out, and this heat exchanging pipe also extends to from cryogenic heat exchanger 3 in the present embodiment.In the present embodiment, be 10 centimetres such as vertical total length of thermal buffer channel 4, can be divided into four sections, between section and section, leave gap 8, gap width is not less than one of percentage of thermal buffer channel 4 length, is 1cm such as the width in gap 8; Gap between thermal buffer channel 4 and the end face 7 is 1cm.The capable ripple loop that this structure is actually a plurality of coaxial configurations merges together, shown in Fig. 8 (a), because the temperature of regenerator and thermal buffer channel all is that line style distributes in each loop, therefore can be merged together each regenerator and thermal buffer channel principle according to the temperature correspondent equal, it is in order to keep the flow performance of original each row ripple loop that thermal buffer channel is divided into the project organization that leaves the gap between several sections per two sections, Fig. 8 (a) structure just equivalence is the cascade of four capable ripple loops among Fig. 8 (b), its operating temperature is such as being designed to 1000K respectively, 900K, 800K, 700K, the feedback pipe 5 of the at different levels capable ripple loop among Fig. 8 (a) and resonatron 6 have also carried out merging the structure that forms Fig. 8 (b).Consider that heat transport fluid progressively reduces through temperature after the heat exchange in the high-temperature heat-exchanging, as long as heat exchange fully can be directly the heat exchanging pipe of high-temperature heat-exchanging is installed in the regenerator, heat transport fluid has been utilized heat energy to greatest extent directly being reduced to cryogenic temperature (such as room temperature) through temperature behind the regenerator like this.Among Fig. 8 (c) presentation graphs 8 (b) along the sectional drawing of A-A line, the heat exchanging pipe 2 of high-temperature heat-exchanging is the inside that is evenly distributed in regenerator 1 basically as can be seen, be to adopt many rectilinear heat exchanging pipes to be embedded in the regenerator in the present embodiment, can certainly other means realize that heat exchanging pipe embeds regenerator, such as adopting at least one spirality heat exchanging pipe to embed regenerator.
In fact in the present embodiment 6, if do not consider to keep the flow performance of capable ripple loops at different levels, just not be used on the thermal buffer channel 4 and reserve the gap, but (in the structure of present embodiment, removed in other words the whole wall of thermal buffer channel 4 is all open by its thermal buffer channel 4 of forming of wall all around with exactlying, but the inner space that reservation regenerator 1 surrounds is as the structure that plays hot buffer function), in fact such thermoacoustic engine structure forms the cascade of unlimited a plurality of capable ripple loop, the high usage of the heat from the high temperature heat source to the low-temperature heat source can be reached capacity.
It should be noted last that above embodiment is only unrestricted in order to technological scheme of the present invention to be described.Although the present invention is had been described in detail with reference to embodiment, those of ordinary skill in the art is to be understood that, technological scheme of the present invention is made amendment or is equal to replacement, do not break away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1, a kind of thermo-acoustic engine system that utilizes temperature-variable heat source, comprise resonatron, the mechanical energy output unit is arranged on the described resonatron, it is characterized in that, also comprise two-stage row ripple loop at least, all shared described resonatrons of capable ripple loop, each described capable ripple loop has high-temperature heat-exchanging, described high-temperature heat-exchanging has inlet opening and the delivery outlet that is used for the input and output of heat transport fluid medium, the described high-temperature heat-exchanging inlet opening of the described high-temperature heat-exchanging delivery outlet of previous stage row ripple loop and back one-level row ripple loop is to being communicated with, and the operating temperature of the described high-temperature heat-exchanging of the described row of two-stage at least ripple loop reduces to back one-level row ripple loop successively from previous stage row ripple loop.
2, thermo-acoustic engine system according to claim 1, it is characterized in that, described capable ripple loop is communicated with in proper order by feedback pipe, first cryogenic heat exchanger, regenerator, described high-temperature heat-exchanging, thermal buffer channel and second cryogenic heat exchanger and constitutes, and described capable ripple loops at different levels are connected with shared described resonatron at separately the second cryogenic heat exchanger place and in the outside of described thermal buffer channel.
3, thermo-acoustic engine system according to claim 1, it is characterized in that, described capable ripple loops at different levels also comprise cryogenic heat exchanger and feedback pipe, between described high-temperature heat-exchanging and described cryogenic heat exchanger, be provided with regenerator and thermal buffer channel, a dividing plate is arranged between described regenerator and the described thermal buffer channel, the described cryogenic heat exchanger of described dividing plate extend past and in the outside of described cryogenic heat exchanger as the wall of described feedback pipe.
4, thermo-acoustic engine system according to claim 1, it is characterized in that, the shared cryogenic heat exchanger of described capable ripple loops at different levels also also comprises regenerator and thermal buffer channel respectively, in the space at place back one-level row ripple loop is set at high-temperature heat-exchanging, regenerator and the shared cryogenic heat exchanger of previous stage row ripple loop.
5, thermo-acoustic engine system according to claim 1 is characterized in that, on the two ends of described resonatron, is connected with the described row of two-stage at least ripple loop respectively.
6, thermo-acoustic engine system according to claim 3 is characterized in that, the described thermal buffer channel of described capable ripple loops at different levels coaxially is in the inside of described regenerator.
7, thermo-acoustic engine system according to claim 3 is characterized in that, the multistage capable ripple loop of all row ripple loops formation circumference symmetric figures is nested, all described regenerators, described thermal buffer channel and described feedback pipe coaxial arrangement.
8, thermo-acoustic engine system according to claim 1, it is characterized in that, capable ripple loops at different levels also comprise regenerator and a shared cryogenic heat exchanger, the high-temperature heat-exchanging of all capable ripple loops forms an integral high-temperature heat exchanger, and described integral high-temperature heat exchanger is arranged on the inside of described regenerator.
9, thermo-acoustic engine system according to claim 8 is characterized in that, described integral high-temperature heat exchanger is formed by at least one fluid conduit systems, be arranged on described regenerator inside,
10, according to Claim 8 or 9 described thermo-acoustic engine systems, it is characterized in that, described regenerator is bent to the shape of the cylinder with hollow portion, described system also comprises thermal buffer channel, described thermal buffer channel coaxially is arranged on the hollow portion of described regenerator, described thermal buffer channel is divided at least two sections in the axial direction, has and is used to make working gas to enter into the gap of described thermal buffer channel between described section and section, and described gap width is more than or equal to one of percentage of described thermal buffer channel length.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100987367A CN100545449C (en) | 2007-04-25 | 2007-04-25 | Utilize the thermo-acoustic engine system of temperature-variable heat source |
| PCT/CN2008/070815 WO2008131687A1 (en) | 2007-04-25 | 2008-04-25 | Thermoacoustic engine system using temperature-change heat source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100987367A CN100545449C (en) | 2007-04-25 | 2007-04-25 | Utilize the thermo-acoustic engine system of temperature-variable heat source |
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| Publication Number | Publication Date |
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| CN101294554A CN101294554A (en) | 2008-10-29 |
| CN100545449C true CN100545449C (en) | 2009-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100987367A Expired - Fee Related CN100545449C (en) | 2007-04-25 | 2007-04-25 | Utilize the thermo-acoustic engine system of temperature-variable heat source |
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| Country | Link |
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| CN (1) | CN100545449C (en) |
| WO (1) | WO2008131687A1 (en) |
Cited By (2)
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| WO2012130169A1 (en) * | 2011-04-01 | 2012-10-04 | 中科力函(深圳)热声技术有限公司 | Two functional thermal driving traveling-wave thermo-acoustic refrigeration system |
| WO2012130168A1 (en) * | 2011-04-01 | 2012-10-04 | 中科力函(深圳)热声技术有限公司 | Two functional multi-stage traveling-wave thermo-acoustic system |
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| CN102562506B (en) * | 2010-12-08 | 2014-07-23 | 中国科学院理化技术研究所 | Open-type thermoacoustic generator |
| CN102042185B (en) * | 2010-12-22 | 2012-11-28 | 西安交通大学 | Plate type thermoacoustic nucleus with tapered channel and design method thereof |
| CN102141017B (en) * | 2011-01-24 | 2013-01-16 | 北京理工大学 | Thermo-acoustic engine based on moving standing wave orthogonal-superposition sound field |
| CN102734098B (en) * | 2011-04-01 | 2014-11-05 | 中科力函(深圳)热声技术有限公司 | Double-acting single-grade traveling wave thermo-acoustic system |
| CN103161712B (en) * | 2011-12-15 | 2015-09-09 | 中国科学院理化技术研究所 | A kind of Double-functional thermo-acoustic compressor system |
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Also Published As
| Publication number | Publication date |
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| WO2008131687A1 (en) | 2008-11-06 |
| CN101294554A (en) | 2008-10-29 |
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