CN104653243A - Low-grade thermally driven low-melting-point metallic phase transformation heat storage power generation system - Google Patents
Low-grade thermally driven low-melting-point metallic phase transformation heat storage power generation system Download PDFInfo
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Abstract
The invention discloses a low-grade thermally driven low-melting-point metallic phase transformation heat storage power generation system which comprises a phase transformation heat storage/release system, an organic working medium turbine power generation system and a cooling water circulating system, wherein the phase transformation heat storage/release system consists of a phase transformation heat storage heat exchanger and corresponding inlet/outlet connection pipes. Storage of low-grade heat can be realized by using the characteristic that metal gallium can generate solid-liquid phase transformation at lower temperature and higher latent heat of fusion; absorption of the low-grade heat is realized by using the characteristic of temperature gliding of a binary non-azeotropic mixed organic working medium (the boiling point of R245fa is 15.1 DEG C, and the boiling point of R601a is 27.8 DEG C); the organic combination of storage and absorption is more beneficial for high-efficiency storage and release of the low-grade heat below than 150 DEG C; by union of a first heat exchanger and a third heat exchanger, output power of the low-boiling-point organic working medium pushing turbine rotation during expansion is increased, and the capacity of converting the low-grade heat into high-grade electric energy is improved, so that the energy in the whole system can be fully used.
Description
Technical field
The invention belongs to power generation system field, particularly, relate to a kind of low-grade heat and drive low melting metal phase transformation heat accumulating power generating system.
Background technique
Low grade heat energy temperature is lower, in the exploitation of the energy, conversion, transport and utilize in process, energy is between supply and demand, often also exist quantitatively, with temporal difference in form, this energy supply and demand time difference and space parallax contradiction restrict the Main Bottleneck that high efficiente callback utilizes, such as: the peak-valley difference of electric load, solar energy, the intermittence of wind energy and ocean energy, the discontinuity etc. of the intermitten service of Industrial Stoves and industrial exhaust heat and used heat, existing heat recovery technology is mainly to be directly recycled as master, cannot realize the utilization of low-temperature level waste heat and heat energy across the time, trans-regional cascade utilization, cause comprehensive utilization rate of energy source lower, the low grade heat energy problem of less than 150 DEG C is particularly outstanding.And energy storage technology can solve the nonuniformity that energy supply and demand are distributed over time and space, effectively can improve energy utilization rate, be widely used in the thermal process, civil building heating etc. of " peak load shifting ", the Aero-Space of electric power, utilization of new energy resources, industry.
At present, according to form of energy used, energy storage technology can be divided into physics energy storage (pumped storage, compressed-air energy storage, flywheel energy storage etc.), electrochemical energy storage (secondary cell, flow battery etc.), chemical energy storage (Hydrogen Energy, synthetic natural gas etc.), power energy storage (superconducting coil energy storage, ultracapacitor energy storage etc.) and hot energy storage (fuse salt energy storage, sensible heat energy storage, hidden heat energy storage etc.).With regard to hot energy storage, sensible heat energy storage technology is simple to operate, with low cost, and shortcoming is in energy release process, and heat storage material temperature can not keep constant, and energy storage density is lower; Hidden heat energy storage utilizes material to absorb in phase transition process or releases latent heat of phase change to carry out the technology of energy storage and release, and heat storage material has the advantages such as latent heat of phase change is large, storage density is high, suction exothermic process is similar to isothermal, process is easy to control in phase transition process.Therefore, phase-change accumulation energy is a kind of energy storage mode having competitive ability, has become one of current topmost heat accumulation application form.
Compared to the application of High-temperature metal phase change heat storage, the research of low melting metal and alloy heat transfer heat storage material thereof is started late, from the aspect such as design and processing of the design of heat storage material, application and product, all have greatly improved space, as: the thermal physical property parameter of low melting metal or its alloy is on the low side, the research of low-melting alloy heat-exchange performance is less, and conduct heat heat storage material thermostability, corrosivity and the environmental effect research of high temperature static and dynamic lower low-melting alloy lacks.
In sum, the application of low melting metal or alloy heat transfer heat storage material is one of measure promoting low grade heat energy efficient storage and release.In addition, low grade heat energy is retrieved to say, organic Rankine bottoming cycle (organicRankine cycle, ORC) generation technology adopts low-boiling-point organic compound as working medium, it is at 60 ~ 70 DEG C, and even 40 ~ 50 DEG C just can gasify as steam, and promote decompressor work done, be high-grade electric energy by thermal power transfer lower for grade, therefore ORC generation technology reclaim low-grade energy and receive much concern in recent years.
With regard to the organic working medium being applicable to ORC, compared with one-component working medium, non-azeotropic mixed working medium (pure refrigerant different by two or more boiling points forms) has its unique advantage: due to temperature glide characteristic during non-azeotropic working medium phase transformation, as long as each component proportion is suitable in mixture, make mixed working fluid steam in inflation process close to constant entropy fluid (dT/dS → ± ∞), the heat transfer temperature difference between working medium with heat exchanging fluid just can be made to keep good mating, thus reduce the irreversible loss in heat transfer process.
Before address, supply and demand time difference and the space parallax contradiction of less than 150 DEG C low grade heat energies are particularly outstanding, and traditional heat recovery technology cannot reverse this situation, transformation of energy and utilization ratio on the low side.How breaking away from the constraint of traditional thinking mode, with the storage of new perspective close examination low grade heat energy and release, is an important topic of worth further investigated.
Application publication number is the patent " a kind of low-melting alloy phase transition heat accumulation unit being applied to solar dryer " of CN102620534A (Shen Qing Publication day is on August 1st, 2012), there is provided a set of based on the low melting metal element such as Sn, Zn, Bi composition, the phase transition heat accumulation unit in warm heat accumulation field in being applicable to.This device has convenient, the safe and reliable and heat exchange efficiency high of feeding and discharging, but this device be not suitable for the thermal source of less than 100 DEG C.
Application publication number is the patent " flue gas waste heat recovery system based on liquid metal heat-transfer " of CN102927843A (Shen Qing Publication day is on February 13rd, 2013), there is provided a set of system utilizing liquid metal to reclaim fume afterheat, this system has the features such as applicable warm area is wide, high temperature resistant, installation and maintenance are convenient.
Application publication number is the patent " supplement steam formula low boiling organic rankie cycle system " of CN103758595A (Shen Qing Publication day is on April 30th, 2014), the power generation system of medium-low temperature fluid within the scope of a set of efficiency utilization 100 ~ 350 DEG C or flue gas thermal source is provided, this system can overcome the contradiction of evaporating temperature and heat recovery rate, makes middle-low temperature heat resource obtain cascade utilization.
But above-mentioned two systems do not consider waste heat thermal source intermittent problems, and waste heat storage problem.Obviously, heat-storage medium and the heat-obtaining medium of seeking to be suitable for less than 150 DEG C low-grade heats become the top priority of dealing with problems.To some low melting metal, such as gallium, its fusing point is only 29.8 DEG C, and close to ambient temperature, compared with other low melting metal, the latent heat of fusion of gallium is higher, is about 80.12kJ/kg, and non-combustible, nontoxic, and price is relatively cheap.To some organic working medium, as R245fa and R601a, boiling point is respectively 15.1 DEG C and 27.8 DEG C, both ODP (ozone depletion potential, ODP) be zero, environment friendly is strong, and the former is master stream body, the latter is wet fluid, and both can close to constant entropy fluid after mixing with appropriate proportioning.
Summary of the invention
The present invention is directed to state of the art Problems existing, provide one with less than 150 DEG C low-grade heats for driving source, with the power generation system of low melting metal phase transformation accumulation of heat.
Low-grade heat of the present invention drives low melting metal phase transformation heat accumulating power generating system, comprises phase transformation storage/heat releasing system, organic working medium turbine power generation system and cooling water recirculation system;
Described phase transformation storage/heat releasing system comprises phase change thermal storage heat exchanger 1 and corresponding low-grade heat entrance 1a, low-grade heat outlet 1b and connecting tube, described phase change thermal storage heat exchanger 1 inner space is each side provided with finned first riffled tube 2a and finned second riffled tube 2b, wherein, the finned riffled tube one end of every root is connected with low-grade heat inlet pipe, the other end is connected with low-grade heat outlet conduit, preferably, these two finned riffled tube levels and parallel placement; Central space position between two finned riffled tubes is provided with a serpentine coil 3, and this serpentine coil one end is connected with organic working medium inlet pipe, and the other end is connected with organic working medium outlet conduit;
Described serpentine coil 3 horizontal positioned, and parallel with two finned riffled tubes; Low-grade heat entrance 1a place, be provided with one section of low-grade heat inflow entrance main pipeline, this main pipeline is decomposed into two branch pipe(tube)s in same point afterwards, and the other end of these two branch pipe(tube)s is connected riffled tube one end finned with two respectively; Low-grade heat outflow opening 1b place, two branch pipe(tube)s that one end is connected with two finned riffled tubes respectively, converge in same point at the other end, and form one section of low-grade heat outflow opening main pipeline;
Described phase change thermal storage heat exchanger inside is filled with appropriate low melting metal; Described low melting metal filling cap crosses finned first riffled tube 2a, finned second riffled tube 2b and serpentine coil 3.
Organic working medium is filled in described serpentine coil 3.
Low melting metal phase transformation heat accumulating power generating system is driven according to low-grade heat of the present invention, described organic working medium turbine power generation system comprises gas-liquid separator 4, organic working medium turbine 5, coupling 6, generator 7, First Heat Exchanger 8, second heat exchanger 9, liquid container 10, first recycle pump 11, the 3rd heat exchanger 12 and the second recycle pump 13, the organic working medium outlet of described phase change thermal storage heat exchanger 1, is connected by the entrance of pipeline with gas-liquid separator 4; The gas outlet of described gas-liquid separator 4 is connected by the entrance of pipeline with organic working medium turbine 5, the liquid outlet of described gas-liquid separator 4, be connected with the hot side liquid entrance of the 3rd heat exchanger 12 by pipeline, the hot side liquid outlet of 3rd heat exchanger 12, is connected by the exhaust duct of pipeline with organic working medium turbine 5; One end, described First Heat Exchanger 8 hot side is connected with the exhaust duct of organic working medium turbine 5, the other end is connected with the second hot side entrance of heat exchanger 9, First Heat Exchanger 8 cold side one end, to be exported with the first recycle pump 11 by pipeline and be connected, the other end is connected with the 3rd heat exchanger 12 cold side input port by pipeline; The hot side outlet of described second heat exchanger 9 is connected with liquid container 10 entrance by pipeline, and liquid container 10 is exported and is connected with the first recycle pump 11 entrance by pipeline; Described 3rd heat exchanger 12 cold side outlet port is connected with the second recycle pump 13 entrance by pipeline, and the second recycle pump 13 is exported and is connected with the organic working medium entrance of phase change thermal storage heat exchanger 1 by pipeline;
Described organic working medium turbine 5 is coaxially arranged with generator 7, and is connected by coupling 6;
Described cooling water recirculation system comprises blower fan 14, air cooling heat radiator 15, cooling water tank 16 and the 3rd recycle pump 17; Described air-cooled heat exchanger 15 one end is connected with the second heat exchanger 9 cold side outlet port by pipeline, and air cooling heat radiator 15 the other end is connected with cooling water tank 16 one end by pipeline; Described blower fan 14 is arranged on the side of air cooling heat radiator 15, and described cooling water tank 16 the other end is connected with the 3rd recycle pump 17 entrance by pipeline, and described 3rd recycle pump 17 is exported and is connected with the second heat exchanger 9 cold side input port by pipeline.
Less than 150 DEG C low-grade heat sources of the present invention are preferably heat smoke or hot water.
Described low melting metal is preferably gallium.
Described organic working medium is preferably the mixture of R245fa and R601a.
The quality proportioning of described R245fa and R601a specifically need be determined according to the temperature of less than 150 DEG C low-grade heat sources and flow thereof.As preferably, the heat flow of described less than 150 DEG C low-grade heat sources is 44.27 ~ 221.34kW, and the loading of described gallium is 0.43 ~ 2.1t, and described organic working medium loading is 0.11 ~ 0.54t, wherein, the mass ratio of described R245fa and R601a is 1:2 ~ 5:2.
The present invention compared with prior art has remarkable progress and good effect:
(1) utilize characteristic (fusing point is 29.8 DEG C) and the higher latent heat of fusion (80.1kJ/kg) that solid-liquid phase change can occur during gallium lower temperature, complete the storage of low-grade heat (temperature <150 DEG C); Utilize binary non-azeotrope to mix organic working medium (R245fa boiling point is 15.1 DEG C, and R601a boiling point is 27.8 DEG C) temperature glide characteristic, realize the absorption of low-grade heat; Both combinations, are more of value to efficient storage and the release of less than 150 DEG C low-grade heats.
(2) First Heat Exchanger and the 3rd heat exchanger combine setting, increase the output work promoting turbine rotation when low boiling organic working medium expands, improve ability low grade heat energy being converted to high-grade electric energy, the energy of whole system inside is fully utilized.
Accompanying drawing explanation
Fig. 1 is that low-grade heat of the present invention drives low melting metal phase transformation heat accumulating power generating system schematic diagram.
Reference character
1, phase change thermal storage heat exchanger 1a, low-grade heat entrance 1b, low-grade heat outlet
2a, the first riffled tube 2b, the second riffled tube 3, serpentine coil 4, gas-liquid separator
5, organic working medium turbine 6, coupling 7, generator 8, First Heat Exchanger
9, the second heat exchanger 10, liquid container 11, first recycle pump 12, the 3rd heat exchanger
13, the second recycle pump 14, blower fan 15, air cooling heat radiator 16, cooling water tank
17, the 3rd recycle pump
Embodiment
Low-grade heat as shown in Figure 1 drives low melting metal phase transformation heat accumulating power generating system, comprises phase transformation storage/heat releasing system, organic working medium turbine power generation system and cooling water recirculation system,
Phase transformation storage/heat releasing system comprises phase change thermal storage heat exchanger 1 and corresponding low-grade heat entrance 1a, low-grade heat outlet 1b and connecting tube, described phase change thermal storage heat exchanger 1 inner space is each side provided with a finned first riffled tube 2a and finned second riffled tube 2b, wherein, finned riffled tube 2a, 2b one end of every root is connected with low-grade heat inlet pipe, the other end is connected with low-grade heat outlet conduit, these two finned riffled tube 2a, 2b levels and parallel placement; Two finned central space positions between riffled tube 2a, 2b, a serpentine coil 3 is installed, this serpentine coil 3 one end is connected with organic working medium inlet pipe, the other end is connected with organic working medium outlet conduit, and this serpentine coil 3 horizontal positioned, and parallel with two finned riffled tube 2a, 2b; Low-grade heat flow ingress, be provided with one section of low-grade heat inflow entrance main pipeline, this main pipeline is decomposed into two branch pipe(tube)s in same point afterwards, and the other end of these two branch pipe(tube)s is connected riffled tube 2a, 2b one end finned with two respectively; Low-grade heat flow outlet port, one end is two branch pipe(tube)s being connected of riffled tube 2a, 2b finned with two respectively, converge in same point at the other end, and form one section of low-grade heat outflow opening main pipeline.
Organic working medium turbine power generation system comprises gas-liquid separator 4, organic working medium turbine 5, coupling 6, generator 7, First Heat Exchanger 8, second heat exchanger 9, liquid container 10, first recycle pump 11, 3rd heat exchanger 12 and the second recycle pump 13, the organic working medium outlet of phase change thermal storage heat exchanger 1, be connected by the entrance of pipeline with gas-liquid separator 4, the gas outlet of gas-liquid separator 4, be connected by the entrance of pipeline with organic working medium turbine 5, the liquid outlet of gas-liquid separator 4, be connected with the hot side liquid entrance of the 3rd heat exchanger 12 by pipeline, the hot side liquid outlet of 3rd heat exchanger 12, be connected with organic working medium turbine 5 exhaust duct by pipeline, one end, First Heat Exchanger 8 hot side is connected with organic working medium turbine 5 exhaust duct, the other end is connected with the second hot side entrance of heat exchanger 9, First Heat Exchanger 8 cold side one end, to be exported with the first recycle pump 11 by pipeline and be connected, the other end is connected with the 3rd heat exchanger 12 cold side input port by pipeline, the hot side outlet of second heat exchanger 9 is connected with liquid container 10 entrance by pipeline, liquid container 10 is exported and is connected with the first recycle pump 11 entrance by pipeline, 3rd heat exchanger 12 cold side outlet port is connected with the second recycle pump 13 entrance by pipeline, and the second recycle pump 13 is exported and is connected with the organic working medium entrance of phase change thermal storage heat exchanger 1 by pipeline.
Cooling water recirculation system comprises blower fan 14, air cooling heat radiator 15, cooling water tank 16 and the 3rd recycle pump 17, second heat exchanger 9 cold side outlet port is connected with air cooling heat radiator 15 one end by pipeline, air cooling heat radiator 15 the other end is connected with cooling water tank 16 one end by pipeline, blower fan 14 is arranged on the side of air cooling heat radiator 15, cooling water tank 16 the other end is connected with the 3rd recycle pump 17 entrance by pipeline, and the 3rd recycle pump 17 is exported and is connected with the second heat exchanger 9 cold side input port by pipeline.
Preferably, phase change thermal storage heat exchanger 1 shell is made up of transparency silica glass, and fills appropriate gallium in phase change thermal storage heat exchanger 1 inner space.Low boiling organic working medium is the mixture of R245fa and R601a.Organic working medium turbine 5 is coaxially arranged with generator 7, and is connected by coupling 6.
Its concrete technology flow process is as follows:
Less than (1) 150 DEG C heat smoke or hot water are through lower with temperature in the phase change thermal storage heat exchanger 1 respectively Solid Gallium heat exchange of two finned first riffled tube 2a and the second riffled tube 2b, and after Solid Gallium heat absorption, temperature raises, and is liquid by Solid State Transformation.The liquid organic working medium mixture of R245fa and R601a that temperature is lower is through serpentine coil 3 and the heat exchange of high-temperature liquid state gallium, and after the heat release of high-temperature liquid state gallium, temperature reduces, and transfer heat to liquid organic working medium mixture, gallium is solid-state by liquid state.After liquid organic working medium mixture heat absorption, temperature raises, and changes high pressure high temperature vapor into.
(2) by the organic working medium steam (wherein a small amount of liquid may be contained) of phase change thermal storage heat exchanger 1 High Temperature High Pressure out, gas-liquid separator 4 is entered through connecting tube.Enter organic working medium turbine 5 by gas-liquid separator 4 high pressure high temperature vapor out to expand, while promoting the rotation of organic working medium turbine 5, generated electricity by coupling 6 drive electrical generators 7.By gas-liquid separator 4 high-temp liquid out, enter the 3rd heat exchanger 12, after the fluid communication heat from First Heat Exchanger 8 cold side, mixed with the weary gas from organic working medium turbine 5 by pipeline, enter First Heat Exchanger 8 afterwards.Continued to enter the second heat exchanger 9 by the hot side of First Heat Exchanger 8 fluid out, after the cooling circulating water heat-shift from the 3rd recycle pump 17, temperature continues to reduce, and changes the organic worker quality liquid of mixing into, enters liquid container 10.Mix organic worker quality liquid, by liquid container 10, be delivered to First Heat Exchanger 8 and the 3rd heat exchanger 12 successively through the first recycle pump 11, and under the pumping action of the second recycle pump 13, return phase change thermal storage heat exchanger 1.
(3) recirculated cooling water flowed out by the second heat exchanger 9 cold side, enter air cooling heat radiator 15, pressure cooling is carried out by the High Rotation Speed of blower fan 14, cooling water after cooling flows into cooling water tank 16, and cooling water lower for temperature is pumped to the second heat exchanger 9 by cooling water tank 16 by the 3rd recycle pump 17, it is made to carry out heat exchange with the fluid from the hot side of First Heat Exchanger 8.
If take the heat smoke of 130 DEG C as low grade residual heat source, its flow is 10000Nm
3/ h, requires that flue-gas temperature is finally reduced to 70 DEG C.After adopting the phase-transition heat-storage power generation system described in the present invention, generator axle head electromotive power output is about 86.7kW, and wherein, in the present embodiment, gallium loading is 1.6t, organic mixed working fluid total amount is 0.4t, and the mass ratio of organic mixed working fluid R245fa and R601a is 3:2.0.4kg mark coal can be saved by often saving 1 degree of electricity, reduce discharging 0.997kg carbon dioxide, 0.03kg sulfur dioxide, 0.015kg nitrogen oxide meter, if this phase-transition heat-storage power generation system year runs 7500h, then can reduce discharging 260.1 tons of mark coals year, 648.3 tons of carbon dioxide, 19.5 tons of sulfur dioxide, 9.75 tons of nitrogen oxide.
Certainly; the present invention can also have various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can openly make various corresponding change and distortion according to of the present invention, but these change accordingly and are out of shape the protection domain that all should belong to claim of the present invention.
Claims (8)
1. low-grade heat drives a low melting metal phase transformation heat accumulating power generating system, comprises phase transformation storage/heat releasing system, organic working medium turbine power generation system and cooling water recirculation system, it is characterized in that,
Described phase transformation storage/heat releasing system comprises phase change thermal storage heat exchanger (1) and corresponding low-grade heat entrance (1a), low-grade heat outlet (1b) and connecting tube, described phase change thermal storage heat exchanger (1) inside installs finned first riffled tube (2a) and finned second riffled tube (2b) respectively, wherein, every root riffled tube one end is connected with low-grade heat inlet pipe, the other end is connected with low-grade heat outlet conduit, central space position between two riffled tubes is provided with a serpentine coil (3), this serpentine coil one end is connected with organic working medium inlet pipe, the other end is connected with organic working medium outlet conduit,
Described phase change thermal storage heat exchanger (1) inside is filled with low melting metal;
Fill organic working medium in described serpentine coil (3), described organic working medium is the mixture of R245fa and R601a.
2. phase-transition heat-storage power generation system according to claim 1, is characterized in that, described low melting metal is gallium.
3. phase-transition heat-storage power generation system according to claim 1, is characterized in that, the loading of described low melting metal is 0.43 ~ 2.1t, and described organic working medium loading is 0.11 ~ 0.54t, and wherein, the mass ratio of described R245fa and R601a is 1:2 ~ 5:2.
4. phase-transition heat-storage power generation system according to claim 1, is characterized in that, described finned first riffled tube (2a), finned second riffled tube (2b) and serpentine coil (3) parallel, horizontal are arranged.
5. according to the arbitrary described phase-transition heat-storage power generation system of claim 1-4, it is characterized in that, described low melting metal filling cap crosses finned first riffled tube (2a), finned second riffled tube (2b) and serpentine coil (3).
6. phase-transition heat-storage power generation system according to claim 1, it is characterized in that, described organic working medium turbine power generation system comprises gas-liquid separator (4), organic working medium turbine (5), coupling (6), generator (7), First Heat Exchanger (8), the second heat exchanger (9), liquid container (10), the first recycle pump (11), the 3rd heat exchanger (12) and the second recycle pump (13); The organic working medium outlet of described phase change thermal storage heat exchanger (1), is connected by the entrance of pipeline with gas-liquid separator (4); The gas outlet of described gas-liquid separator (4), be connected by the entrance of pipeline with organic working medium turbine (5), the liquid outlet of described gas-liquid separator (4), be connected with the hot side liquid entrance of the 3rd heat exchanger (12) by pipeline, the hot side liquid outlet of 3rd heat exchanger (12), is connected by the exhaust duct of pipeline with organic working medium turbine (5); One end, described First Heat Exchanger (8) hot side is connected with the exhaust duct of organic working medium turbine (5), the other end is connected with the second heat exchanger (9) hot side entrance, First Heat Exchanger (8) cold side one end, to be exported with the first recycle pump (11) by pipeline and be connected, the other end is connected with the 3rd heat exchanger (12) cold side input port by pipeline; The hot side outlet of described second heat exchanger (9) is connected with liquid container (10) entrance by pipeline, and liquid container (10) outlet is connected with the first recycle pump (11) entrance by pipeline; Described 3rd heat exchanger (12) cold side outlet port is connected with the second recycle pump (13) entrance by pipeline, and the second recycle pump (13) outlet is connected by the organic working medium entrance of pipeline with phase change thermal storage heat exchanger (1).
7. the phase-transition heat-storage power generation system according to claim 1 or 6, it is characterized in that, described cooling water recirculation system comprises blower fan (14), air cooling heat radiator (15), cooling water tank (16) and the 3rd recycle pump (17); Described air cooling heat radiator (15) one end is connected with the second heat exchanger (9) cold side outlet port of organic working medium turbine power generation system by pipeline, and air cooling heat radiator (15) the other end is connected with cooling water tank (16) one end by pipeline; Described blower fan (14) is arranged on the side of air cooling heat radiator (15), cooling water tank (16) the other end is connected with the 3rd recycle pump (17) entrance by pipeline, and described 3rd recycle pump (17) outlet is connected with the second heat exchanger (9) cold side input port of organic working medium turbine power generation system by pipeline.
8., according to the arbitrary described phase-transition heat-storage power generation system of claim 1-4, it is characterized in that, described low-grade heat is heat smoke or the hot water of less than 150 DEG C, and the heat flow of heat smoke or hot water is 44.27 ~ 221.34kW.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113007984A (en) * | 2019-12-20 | 2021-06-22 | 常州佳成干燥设备有限公司 | Waste heat recovery device for drying equipment |
| CN113776372A (en) * | 2021-11-12 | 2021-12-10 | 北京大臻科技有限公司 | Normal-temperature cold accumulation device based on orthosteric hydrogen conversion, cold accumulation method and cold taking method |
| CN114483232A (en) * | 2022-02-09 | 2022-05-13 | 西安交通大学 | Compressed air energy storage system based on organic flash evaporation circulation and control method |
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