CN102162433B - Solar heat-storage power generating method with gas afterburning function and device thereof - Google Patents

Solar heat-storage power generating method with gas afterburning function and device thereof Download PDF

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Publication number
CN102162433B
CN102162433B CN201110045328A CN201110045328A CN102162433B CN 102162433 B CN102162433 B CN 102162433B CN 201110045328 A CN201110045328 A CN 201110045328A CN 201110045328 A CN201110045328 A CN 201110045328A CN 102162433 B CN102162433 B CN 102162433B
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heat
circulation
fluid
chamber
outlet
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CN201110045328A
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CN102162433A (en
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倪明江
肖刚
骆仲泱
高翔
岑可法
方梦祥
周劲松
施正伦
程乐鸣
王勤辉
王树荣
余春江
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浙江大学
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy
    • Y02E10/46Conversion of thermal power into mechanical power, e.g. Rankine, Stirling solar thermal engines

Abstract

The invention discloses a solar heat-storage power generating method with gas afterburning function and a device thereof. The device is composed of a heat collector, a heat accumulator, a Stirling engine, a generator, a supercharger, a heat exchanger and a circulating fluid exchanging valve, wherein the outlet of the heat collector is connected with the inlet of the heat accumulator; the outlet of the heat accumulator is connected with the inlet of a heat exchanging chamber of the Stirling engine; the outlet of the heat exchanging chamber is connected with the inlet of a cooling chamber; the outlet of the cooling chamber is connected with the inlet of the supercharger; the outlet of the supercharger is connected with the inlet of a temperature increasing chamber; the outlet of the temperature increasing chamber is respectively connected with the inlet of the heat collector and the inlet of the heat accumulator through the circulating fluid exchanging valve; and the Stirling engine is connected with the generator. According to the invention, a gas afterburning system is adopted, and the defects of generating power fluctuation and even shutdown caused by discontinuous and unstable sun light are overcome; since the heat accumulator is adopted, the inlet temperature of the heat exchanging chamber of the Stirling engine is more stable, and the stability of the generating system is increased.

Description

A kind of solar heat-preservation electricity-generating method and device thereof that has the combustion gas afterburning

Technical field

The present invention relates to the solar energy thermal-power-generating field, relate in particular to a kind of solar heat-preservation electricity-generating method and device thereof of combustion gas afterburning.

Background technique

Global solar radiation amount about 1.7 * 10 17W, wherein China accounts for 1% (1.8 * 10 15W is equivalent to 1.9 trillion tons of mark coal/years), be present year 680 times of total energy consumption of China.Electric power is maximum secondary energy of consumption in the world, and solar energy generation technology is an effective means of alleviating current energy crisis, and application prospect is extremely wide.

Solar energy generation technology mainly is divided into photovoltaic generation and solar energy thermal-power-generating two big classes.Photovoltaic generation mainly is to utilize the photoelectric effect of photovoltaic battery panel to generate electricity, and when unglazed or sunlight intensity fluctuation, complete generation outage of photovoltaic generating system or generated output fluctuation are impacted very big to electrical network.Solar energy thermal-power-generating mainly is through parabolic mirror sunlight to be gathered together, and directly utilizes external heating motor (like Stirling engine) generating, or produces the steam driven steam turbine power generation of HTHP through heat-exchanger rig.Solar energy thermal-power-generating efficient is higher, can be stored in evening or the continuation generating of unglazed time through heat, still, when running into the rainy weather of seasonal variations or long period, also unstable thereupon even necessary shutdown of the operation of solar heat power generation system.

Therefore, be necessary very much to develop a kind of method for electric generation using solar energy that can unite conventional energy resource or other renewable energy sourcess, increase the operation stability and the reliability of power generation system.

Summary of the invention

The object of the invention is to overcome the deficiency of existing solar heat power generation system, and a kind of solar heat-preservation electricity-generating method and device thereof that has the combustion gas afterburning is provided.

The solar heat-preservation electricity-generating method that has the combustion gas afterburning is: when sunny by day; Sunlight after the gathering sees through bilayer and vacuumizes the silica glass protective housing; Be radiated on the heat-absorbent surface that is provided with fin; Dark light absorbent on heat-absorbent surface and the fin is converted into heat with sunlight, and the circulation of fluid after the supercharging preheating is taken away heat rapidly, makes the circulation of fluid temperature of heat collector outlet reach 900 ℃~1400 ℃; On sunlight deficiency or the daytime of overcast and rainy day; Launch combustion gas afterburning system; Utilize to assemble the back solar radiation simultaneously being provided with the heat that transforms on the heat-absorbent surface of fin and the heat circulation of fluid of combustion gas afterburning generation, make the outlet temperature of circulation of fluid reach 900 ℃~1400 ℃; Subsequently, circulation of fluid gets into thermal accumulator and carries out heat exchange, and the part heat is stored in the thermal accumulator; Simultaneously the thermal accumulator outlet temperature is maintained 700 ℃~950 ℃, subsequently, circulation of fluid gets into the heat exchanging chamber of Stirling engine; Part heat transferred Stirling engine is used for the acting generating, and the circulation of fluid temperature stabilization of heat exchanging chamber outlet gets into cooling chamber subsequently at 300 ℃~600 ℃; After circulation of fluid is cooled to 150 ℃~200 ℃; Utilize pressure-increasing machine that circulation of fluid is carried out supercharging, heating the indoor preheating of carrying out then, the circulation of fluid after the supercharging preheating gets into heating in the heat collector once more; At night, the circulation of fluid after the supercharging preheating directly gets into thermal accumulator and absorbs heat, and makes thermal accumulator outlet port circulation of fluid temperature stabilization at 700 ℃~950 ℃; Subsequently, circulation of fluid gets into the heat exchanging chamber of Stirling engine, and part heat transferred Stirling engine is used for the acting generating; The circulation of fluid temperature stabilization of heat exchanging chamber outlet is at 300 ℃~600 ℃ entering cooling chambers; After circulation of fluid is cooled to 150 ℃~200 ℃, utilize pressure-increasing machine that circulation of fluid is carried out supercharging, carry out preheating then in the chamber of heating; Circulation of fluid after the supercharging preheating gets into thermal accumulator once more and absorbs heat, and circulation drives Stirling engine acting generating according to this.

The solar heat-preservation electricity generating device that has the combustion gas afterburning is made up of heat collector, thermal accumulator, Stirling engine, generator, pressure-increasing machine, heat exchanger and circulation of fluid switch valve; Wherein the outlet of heat collector is connected with the thermal accumulator inlet; The thermal accumulator outlet is connected with the inlet of the heat exchanging chamber of Stirling engine; The outlet of heat exchanging chamber is connected with the cooling chamber inlet; Cooling chamber outlet is connected with the pressure-increasing machine inlet, the pressure-increasing machine outlet with heat chamber inlet and be connected, the chamber of heating exports to be passed through the circulation of fluid switch valve and enters the mouth with thermal accumulator with the inlet of heat collector respectively and be connected; Stirling engine is connected with generator.

Combustion gas afterburning system adopts the heat-accumulation combustion mode, the sensible heat that discharges flue gas is stored in be used for warm-up combustion-supporting air in the regenerative heat exchanger, reduces the combustion gas use amount.

Described heat collector vacuumizes silica glass, gas combustion chamber, circulation of fluid heat-absorbing chamber, outlet, induced draught fan, flue gas switch valve, air switch valve, blower by gas storage tank, combustion gas total valve, regenerative heat exchanger, combustion gas switch valve, gas burner, inlet, heat-absorbent surface, fin, guide plate, concurrent heating heat exchanging plate, bilayer and forms; Circulation of fluid heat-absorbing chamber top is provided with bilayer and vacuumizes silica glass; Bilayer vacuumizes the silica glass both sides and is arranged with two inlets; Circulation of fluid heat-absorbing chamber tilt is arranged the heat-absorbent surface that is provided with fin; Be provided with the middle circular flow body opening that is provided with of heat-absorbent surface of fin, the heat-absorbent surface below is provided with guide plate, and the guide plate below is provided with the concurrent heating heat exchanging plate; The concurrent heating heat exchanging plate with gas combustion chamber and circulation of fluid heat-absorbing chamber separately, after guide plate boot cycle fluid flows through from the heat-absorbent surface back side again from the concurrent heating heat exchanging plate top channel flow mistake on gas combustion chamber top.Be provided with outlet in the middle of the concurrent heating heat exchanging plate; The gas combustion chamber both sides are respectively equipped with gas burner, and two gas burners are connected with gas storage tank with the combustion gas total valve through the combustion gas switch valve, and the gas combustion chamber both sides are respectively equipped with regenerative heat exchanger; Two regenerative heat exchanger one ports connect through the air switch valve; The air switch valve is connected with blower, and two regenerative heat exchanger another port connect through the flue gas switch valve, and the flue gas switch valve is connected with induced draught fan.It is streamlined curved surface that described bilayer vacuumizes silica glass, and the boot cycle fluid flows, and makes incident ray as much as possible be vertical or near perpendicular to minute surface, has reduced optical loss.

Compared with prior art, the present invention has the following advantages:

1, the present invention has adopted combustion gas afterburning system, can be in long-time sunlight intensity makeup energy during not enough or rainy weather, overcome that sunlight is discontinuous and unstable to cause generated output to fluctuate even the shortcoming of shutdown.

2, the present invention has adopted circulation of fluid to absorb and has transmitted heat, can absorb heat energy that solar energy and combustion gas afterburning produced at the same time or separately and thermal energy transfer is arrived the Stirling engine hot junction, generates electricity, and has increased the flexibility of system.

3, the present invention has adopted big capacity thermal accumulator; When sunlight is sufficient, can reduce its temperature through the partial heat energy that absorbs circulation of fluid at the heat exchanging chamber inlet of Stirling engine; Circulation of fluid can improve temperature through the partial heat energy that absorbs big capacity thermal accumulator when sunlight is not enough or when unglazed; Make its heat exchanging chamber inlet temperature remain on comparatively stable scope, increased the stability of power generation system at Stirling engine.

4, the present invention has adopted heat exchanger and pressure-increasing machine, can effectively reclaim heat energy and improve the pressure head of circulation of fluid, reduces heat-energy losses.

Description of drawings:

Fig. 1 is the structural representation that has the solar heat-preservation electricity generating device of combustion gas afterburning;

Among the figure: gas storage tank 1; Combustion gas total valve 2; Regenerative heat exchanger 3; Combustion gas switch valve 4; Gas burner 5; Inlet 6; Heat-absorbent surface 7; Fin 8; Guide plate 9; Concurrent heating heat exchanging plate 10; Bilayer vacuumizes silica glass 11; Circulation of fluid switch valve 12; Heat exchanger 13; Heat chamber 14; Cooling chamber 15; Pressure-increasing machine 16; Generator 17; Stirling engine 18; Heat exchanging chamber 19; Thermal accumulator 20; Gas combustion chamber 21; Circulation of fluid heat-absorbing chamber 22; Outlet 23; Induced draught fan 24; Flue gas switch valve 25; Air switch valve 26; Blower 27; Heat collector 28.

Embodiment:

The solar heat-preservation electricity-generating method that has the combustion gas afterburning is: when sunny by day; Sunlight after the gathering sees through bilayer and vacuumizes silica glass 11 protective housings; Be radiated on the heat-absorbent surface 7 that is provided with fin 8; Dark light absorbent on heat-absorbent surface and the fin is converted into heat with sunlight, and the circulation of fluid after the supercharging preheating is taken away heat rapidly, makes the circulation of fluid temperature of heat collector 28 outlets reach 900 ℃~1400 ℃; On sunlight deficiency or the daytime of overcast and rainy day; Launch combustion gas afterburning system; Utilize to assemble the back solar radiation simultaneously being provided with the heat that transforms on the heat-absorbent surface of fin and the heat circulation of fluid of combustion gas afterburning generation, make the outlet temperature of circulation of fluid reach 900 ℃~1400 ℃; Subsequently, circulation of fluid gets into thermal accumulator 20 and carries out heat exchange, and the part heat is stored in the thermal accumulator 20; Simultaneously the thermal accumulator outlet temperature is maintained 700 ℃~950 ℃, subsequently, circulation of fluid gets into the heat exchanging chamber 19 of Stirling engine 18; Part heat transferred Stirling engine 18 is used for the acting generating, and the circulation of fluid temperature stabilization of heat exchanging chamber outlet gets into cooling chamber 15 subsequently at 300 ℃~600 ℃; After circulation of fluid is cooled to 150 ℃~200 ℃; Utilize 16 pairs of circulation of fluids of pressure-increasing machine to carry out supercharging, in heating chamber 14, carry out preheating then, the circulation of fluid after the supercharging preheating gets into heating in the heat collector 28 once more; At night, the circulation of fluid after the supercharging preheating directly gets into thermal accumulator and absorbs heat, and makes thermal accumulator outlet port circulation of fluid temperature stabilization at 700 ℃~950 ℃; Subsequently, circulation of fluid gets into the heat exchanging chamber 19 of Stirling engine 18, and part heat transferred Stirling engine is used for the acting generating; The circulation of fluid temperature stabilization of heat exchanging chamber outlet is at 300 ℃~600 ℃ entering cooling chambers; After circulation of fluid is cooled to 150 ℃~200 ℃, utilize pressure-increasing machine that circulation of fluid is carried out supercharging, carry out preheating then in the chamber of heating; Circulation of fluid after the supercharging preheating gets into thermal accumulator once more and absorbs heat, and circulation drives Stirling engine acting generating according to this.

Described combustion gas afterburning system adopts the heat-accumulation combustion mode, the sensible heat of discharging flue gas is stored in be used for warm-up combustion-supporting air in the regenerative heat exchanger, reduces the combustion gas use amount.

As shown in Figure 1; The solar heat-preservation electricity generating device that has the combustion gas afterburning is made up of heat collector 28, thermal accumulator 20, Stirling engine 18, generator 17, pressure-increasing machine 16, heat exchanger 13 and circulation of fluid switch valve 12; Wherein the outlet 23 of heat collector 28 is connected with thermal accumulator 20 inlets; Thermal accumulator 20 outlets are connected with the inlet of the heat exchanging chamber 19 of Stirling engine 18, and the outlet of heat exchanging chamber 19 is connected with cooling chamber 15 inlets, and cooling chamber 15 outlets are connected with pressure-increasing machine 16 inlets; Pressure-increasing machine 16 outlet with heat chamber 14 inlets and be connected, heat chamber 14 outlets passing through circulation of fluid switch valve 12 and enter the mouth with thermal accumulator 20 with the inlet 6 of heat collector 28 respectively and be connected; Stirling engine 18 is connected with generator 17.

As shown in Figure 1, described heat collector 28 vacuumizes silica glass 11, gas combustion chamber 21, circulation of fluid heat-absorbing chamber 22, outlet 23, induced draught fan 24, flue gas switch valve 25, air switch valve 26, blower 27 by gas storage tank 1, combustion gas total valve 2, regenerative heat exchanger 3, combustion gas switch valve 4, gas burner 5, inlet 6, heat-absorbent surface 7, fin 8, guide plate 9, concurrent heating heat exchanging plate 10, bilayer and forms; Circulation of fluid heat-absorbing chamber 22 tops are provided with bilayer and vacuumize silica glass 11, and bilayer vacuumizes silica glass 11 both sides and is arranged with two inlets 6, and circulation of fluid heat-absorbing chamber tilt is arranged the heat-absorbent surface 7 that is provided with fin 8; Be provided with the heat-absorbent surface 7 middle circular flow body openings that are provided with of fin 8; Heat-absorbent surface 7 belows are provided with guide plate 9, and guide plate 9 belows are provided with concurrent heating heat exchanging plate 10, and concurrent heating heat exchanging plate 10 was opened gas combustion chamber 21 and circulation of fluid heat-absorbing chamber in 22 minutes; Be provided with outlet 23 in the middle of the concurrent heating heat exchanging plate 10; Gas combustion chamber 21 both sides are respectively equipped with 5, two gas burners 5 of gas burner and are connected with gas storage tank 1 with combustion gas total valve 2 through combustion gas switch valve 4, and gas combustion chamber 21 both sides are respectively equipped with regenerative heat exchanger 3; Two regenerative heat exchanger 3 one ports connect through air switch valve 26; Air switch valve 26 is connected with blower 27, and two regenerative heat exchanger 3 another port connect through flue gas switch valve 25, and flue gas switch valve 25 is connected with induced draught fan 24.

Described bilayer vacuumizes silica glass 11 and is streamlined curved surface, and the boot cycle fluid flows, and makes incident ray as much as possible be vertical or near perpendicular to minute surface, has reduced optical loss.

After described guide plate 9 boot cycle fluids flow through from heat-absorbent surface 8 back sides again from the concurrent heating heat exchanging plate 10 top channel flow mistakes on gas combustion chamber 21 tops.

Working procedure of the present invention:

When sunlight was sufficient, the sunlight after the gathering saw through bilayer and vacuumizes the silica glass protective housing, is radiated on the heat-absorbent surface that is provided with fin, and the dark light absorbent on heat-absorbent surface and the fin is converted into heat with sunlight.Circulation of fluid after the supercharging preheating gets into heat collector from two side entrances; Circulation of fluid is washed away the obverse and reverse of the heat-absorbent surface that has fin; Fin helps to strengthen flow disturbance, increases the coefficient of heat transfer heat is taken away rapidly, and the circulation of fluid temperature is brought up to 900 ℃~1400 ℃; Circulation of fluid after the heating gets into thermal accumulator, the part heat is stored in the big capacity thermal accumulator, and with the circulation of fluid temperature stabilization at 700 ℃~950 ℃; Circulation of fluid gets into the heat exchanging chamber in Stirling engine hot junction subsequently; Part heat transferred Stirling engine is used for acting generating, and the circulation of fluid of heat exchanging chamber outlet gets into the cooling chamber of heat exchanger, circulation of fluid is cooled to 150 ℃~200 ℃ after; Utilize pressure-increasing machine that circulation of fluid is carried out supercharging; Carry out preheating in the chamber of heating of heat exchanger then, the circulation of fluid after the supercharging preheating gets into heating in the heat collector once more, and circulation drives Stirling engine acting generating according to this.

When long-time deficiency of sunlight or rainy weather, opening combustion gas afterburning system is that heat generating system provides heat energy, keeps the operation stability and the reliability of power generation system.Adopt the heat-accumulation combustion mode, the sensible heat of the combustion product gases of discharging is stored in is used for warm-up combustion-supporting air in the regenerative heat exchanger, reduce the combustion gas use amount; At this moment; After circulation of fluid after the supercharging preheating has the solar thermal collector of combustion gas afterburning system from the entering of two side entrances; The positive and negative that washes away the heat-absorbent surface that has fin on the one hand absorbs heat; Absorb the heat that fuel gas buring produces through the concurrent heating heat exchanging plate on the other hand, the circulation of fluid temperature is brought up to 900 ℃~1400 ℃; Circulation of fluid after the heating gets into big capacity thermal accumulator; The part heat is stored in the big capacity thermal accumulator; And with the circulation of fluid temperature stabilization at 700 ℃~950 ℃, circulation of fluid gets into the heat exchanging chamber in Stirling engine hot junction subsequently, and part heat transferred Stirling engine is used for the acting generating; The circulation of fluid of heat exchanging chamber outlet gets into the cooling chamber of heat exchanger; After circulation of fluid is cooled to 150 ℃~200 ℃, utilize pressure-increasing machine that circulation of fluid is carried out supercharging, carry out preheating in the chamber of heating of heat exchanger then; Circulation of fluid after the supercharging preheating gets into heating in the solar thermal collector that has combustion gas afterburning system once more, and circulation drives Stirling engine acting generating according to this.

In night when unglazed; Circulation of fluid after the supercharging preheating directly gets into big capacity thermal accumulator through the circulation of fluid switching valve, with the heat energy that stores in the big capacity thermal accumulator of absorption, and the circulation of fluid temperature is heated to 700 ℃~950 ℃; Circulation of fluid gets into the heat exchanging chamber in Stirling engine hot junction subsequently; Part heat transferred Stirling engine is used for acting generating, and the circulation of fluid of heat exchanging chamber outlet gets into the cooling chamber of heat exchanger, circulation of fluid is cooled to 150 ℃~200 ℃ after; Utilize pressure-increasing machine that circulation of fluid is carried out supercharging; Carry out preheating in the chamber of heating of heat exchanger then, the circulation of fluid after the supercharging preheating gets into big capacity thermal accumulator heating once more, and circulation drives Stirling engine acting generating according to this.

Embodiment:

Device in this enforcement is made up of heat collector, thermal accumulator, Stirling engine, generator, pressure-increasing machine, heat exchanger and circulation of fluid switch valve; Wherein the outlet of heat collector is connected with the thermal accumulator inlet; The thermal accumulator outlet is connected with the inlet of the heat exchanging chamber of Stirling engine; The outlet of heat exchanging chamber is connected with the cooling chamber inlet; Cooling chamber outlet is connected with the pressure-increasing machine inlet, the pressure-increasing machine outlet with heat chamber inlet and be connected, the chamber of heating exports to be passed through the circulation of fluid switch valve and enters the mouth with thermal accumulator with the inlet of heat collector respectively and be connected.0.35 meter of heat collector inlet diameter, the heat-absorbent surface angle of inclination is 30 ° in the circulation of fluid heat-absorbing chamber, long 0.8 meter of thermal accumulator, 0.36 meter of diameter, cross section percent opening 6%; Stirling engine rated power 1kW.In the East China summer fine, the solar energy density behind the focusing system optically focused is about 300 kW/m 2~500kW/m 2, the sunshine duration is about 10 hours.The mass flow rate of circulation of fluid is about 9.2kg/h, feeds heat collector from two side entrances, and inlet temperature is about 250 ℃~300 ℃; The circulation of fluid outlet temperature is 1000 ℃~1400 ℃, and after big capacity thermal accumulator made its cooling, circulation of fluid was 750 ℃~900 ℃ in the temperature of Stirling engine heat exchanging chamber inlet, and the Stirling engine generated output is 0.80 kW~0.95 kW.The circulation of fluid of heat exchanging chamber outlet is successively through cooling chamber, pressure-increasing machine and heat the chamber, and the circulation of fluid after the supercharging preheating gets into heating in the heat collector once more.In night, operation cycle fluid switching valve makes its switching-over, and circulation of fluid directly gets into big capacity thermal accumulator, and outlet temperature is about 700 ℃~900 ℃, and generated output is 0.65 kW~0.85kW.

Claims (4)

1. solar heat-preservation electricity-generating method that has the combustion gas afterburning; It is characterized in that: when sunny by day; Sunlight after the gathering sees through bilayer and vacuumizes silica glass (11) protective housing, is radiated on the heat-absorbent surface (7) that is provided with fin (8), and the dark light absorbent on heat-absorbent surface and the fin is converted into heat with sunlight; Circulation of fluid after the supercharging preheating is taken away heat rapidly, makes the circulation of fluid temperature of heat collector (28) outlet reach 900 ℃~1400 ℃; On sunlight deficiency or the daytime of overcast and rainy day; Launch combustion gas afterburning system; Utilize to assemble the back solar radiation simultaneously being provided with the heat that transforms on the heat-absorbent surface of fin and the heat circulation of fluid of combustion gas afterburning generation, make the outlet temperature of circulation of fluid reach 900 ℃~1400 ℃; Subsequently, circulation of fluid gets into thermal accumulator (20) and carries out heat exchange, and the part heat is stored in the thermal accumulator (20); Simultaneously the thermal accumulator outlet temperature is maintained 700 ℃~950 ℃; Subsequently, circulation of fluid gets into the heat exchanging chamber (19) of Stirling engine (18), and part heat transferred Stirling engine (18) is used for the acting generating; The circulation of fluid temperature stabilization of heat exchanging chamber outlet is at 300 ℃~600 ℃; Get into cooling chamber (15) subsequently, circulation of fluid is cooled to 150 ℃~200 ℃ after, utilize pressure-increasing machine (16) that circulation of fluid is carried out supercharging; In heating chamber (14), carry out preheating then, the circulation of fluid after the supercharging preheating gets into heating in the heat collector (28) once more; At night, the circulation of fluid after the supercharging preheating directly gets into thermal accumulator and absorbs heat, and makes thermal accumulator outlet port circulation of fluid temperature stabilization at 700 ℃~950 ℃; Subsequently, circulation of fluid gets into the heat exchanging chamber (19) of Stirling engine (18), and part heat transferred Stirling engine is used for the acting generating; The circulation of fluid temperature stabilization of heat exchanging chamber outlet is at 300 ℃~600 ℃ entering cooling chambers; After circulation of fluid is cooled to 150 ℃~200 ℃, utilize pressure-increasing machine that circulation of fluid is carried out supercharging, carry out preheating then in the chamber of heating; Circulation of fluid after the supercharging preheating gets into thermal accumulator once more and absorbs heat, and circulation drives Stirling engine acting generating according to this.
2. a kind of solar heat-preservation electricity-generating method that has the combustion gas afterburning according to claim 1 is characterized in that described combustion gas afterburning system adopts the heat-accumulation combustion mode.
3. solar heat-preservation electricity generating device that has the combustion gas afterburning of method design according to claim 1; It is characterized in that device is made up of heat collector (28), thermal accumulator (20), Stirling engine (18), generator (17), pressure-increasing machine (16), heat exchanger (13) and circulation of fluid switch valve (12); Wherein the outlet (23) of heat collector (28) is connected with thermal accumulator (20) inlet; Thermal accumulator (20) outlet is connected with the inlet of the heat exchanging chamber (19) of Stirling engine (18); The outlet of heat exchanging chamber (19) is connected with cooling chamber (15) inlet; Cooling chamber (15) outlet is connected with pressure-increasing machine (16) inlet; Pressure-increasing machine (16) exports and heats chamber (14) inlet and is connected, heats chamber (14) outlet and enters the mouth with thermal accumulator (20) with the inlet (6) of heat collector (28) respectively through circulation of fluid switch valve (12) and be connected; Stirling engine (18) is connected with generator (17); Described heat collector (28) is by gas storage tank (1); Combustion gas total valve (2); Regenerative heat exchanger (3); Combustion gas switch valve (4); Gas burner (5); Inlet (6); Heat-absorbent surface (7); Fin (8); Guide plate (9); Concurrent heating heat exchanging plate (10); Bilayer vacuumizes silica glass (11); Gas combustion chamber (21); Circulation of fluid heat-absorbing chamber (22); Outlet (23); Induced draught fan (24); Flue gas switch valve (25); Air switch valve (26); Blower (27) is formed; Circulation of fluid heat-absorbing chamber (22) top is provided with bilayer and vacuumizes silica glass (11); Bilayer vacuumizes silica glass (11) both sides and is arranged with two inlets (6); Circulation of fluid heat-absorbing chamber tilt is arranged the heat-absorbent surface (7) that is provided with fin (8); Be provided with the middle circular flow body opening that is provided with of heat-absorbent surface (7) of fin (8); Heat-absorbent surface (7) below is provided with guide plate (9), and guide plate (9) below is provided with concurrent heating heat exchanging plate (10), and concurrent heating heat exchanging plate (10) separates gas combustion chamber (21) and circulation of fluid heat-absorbing chamber (22); Be provided with outlet (23) in the middle of the concurrent heating heat exchanging plate (10); Gas combustion chamber (21) both sides are respectively equipped with gas burner (5), and two gas burners (5) are connected with gas storage tank (1) with combustion gas total valve (2) through combustion gas switch valve (4), and gas combustion chamber (21) both sides are respectively equipped with regenerative heat exchanger (3); Two regenerative heat exchanger (3) one ports connect through air switch valve (26); Air switch valve (26) is connected with blower (27), and two regenerative heat exchangers (3) another port connects through flue gas switch valve (25), and flue gas switch valve (25) is connected with induced draught fan (24).
4. a kind of solar heat-preservation electricity generating device that has the combustion gas afterburning according to claim 3 is characterized in that it is streamlined curved surface that described bilayer vacuumizes silica glass (11).
CN201110045328A 2011-02-25 2011-02-25 Solar heat-storage power generating method with gas afterburning function and device thereof CN102162433B (en)

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