CN103527271B - Passive low-temperature heat energy organic matter working medium electricity generation method - Google Patents

Passive low-temperature heat energy organic matter working medium electricity generation method Download PDF

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CN103527271B
CN103527271B CN201310496376.1A CN201310496376A CN103527271B CN 103527271 B CN103527271 B CN 103527271B CN 201310496376 A CN201310496376 A CN 201310496376A CN 103527271 B CN103527271 B CN 103527271B
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working medium
vaporizer
pressure
controlled valve
self
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CN201310496376.1A
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CN103527271A (en
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翁一武
薄泽民
吕小静
耿孝儒
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上海交通大学
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Priority claimed from US15/361,387 external-priority patent/US10060302B2/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00General layout or general methods of operation of complete plants
    • F01K13/006Auxiliaries or details not otherwise provided for
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K11/00Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00General layout or general methods of operation of complete plants
    • F01K13/02Controlling, e.g. stopping or starting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/16Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00Application
    • F05D2220/40Application in turbochargers

Abstract

The invention relates to a passive low-temperature heat energy organic matter working medium electricity generation method. Organic working media in a first evaporator and a second evaporator are heated and evaporated, when the pressure of the organic working media reaches set pressure, self-acting pressure control valves on outlets of the evaporators are triggered to be opened under the working pressure, organic matter working medium steam enters a turbine and pushes the turbine to act so that an electricity generator can be driven to output electric energy, low-pressure and low-temperature useless steam enters a condenser to be condensed after acting is conducted, the first evaporator and the second evaporator take turns to output working steam and unceasingly drive the turbine to act, and therefore electric energy can be outputted. Compared with the prior art, the passive low-temperature heat energy organic matter working medium electricity generation method is reliable in performance and achieves rising of the pressure when the working media are heated and evaporated in closed space so that operation can be conducted.

Description

Non-energy dynamic formula low-temperature heat energy organic matter working medium electricity-generating method

Technical field

The present invention relates to a kind of electricity-generating method, especially relate to a kind of non-energy dynamic formula low-temperature heat energy organic matter working medium electricity-generating method.

Background technique

Low-temperature heat source is often referred to the thermal source of temperature below 200 DEG C, its abundant species, and total amount is huge, mainly comprises solar heat, underground heat and industrial exhaust heat etc.According to statistics, China has the territory year solar radiation total amount of 2/3rds to be greater than every square meter 5000MJ, and the whole nation fief thermal resource amount can be about 3,300,000,000 tons of standard coals, and industrial energy consumption accounts for about 70% of national energy total amount, and industrial exhaust heat accounts for 15% of industrial energy consumption.Because low-temperature heat source is difficult to be recycled by the power generating equipment of routine, most low-temperature heat sources is discharged among environment in vain, causes waste and environmental pollution greatly.Therefore, how high efficiente callback utilizes the huge energy of this part total amount to become a focus of current energy source technical field.Wherein, organic substance working medium Rankine power generation system adopts low boiling working fluid, working substance steam can enter turbine expansion acting with higher pressure, single unit system structure is simple, technology is practical, thermal source utilization ratio is high, is more suitable for for utilizing these low-temperature heat sources than conventional steam Rankine cycle power generation system.

As far back as nineteen twenty-four, scientist just begins one's study and adopts low-boiling-point organic compound working medium diphenyl oxide as the organic matter Rankine cycle of working medium.Along with the reinforcement that people realize worldwide energy crisis; cause national governments and energy science and technology worker to the attention of organic matter Rankine cycle; the generating country such as the U.S., Japan, Israel, Italy, Germany, France drops into a large amount of human and material resources in succession, falls over each other research and development organic matter Rankine cycle generation technology.At present, organic substance working medium Rankine power generation system is mainly used in geothermal power station, sunlight heat, industrial exhaust heat and the generating of biomass energy heat.Abroad, the company grasping organic matter Rankine cycle generation technology mainly contains Electra Therm, Turboden, Eneftech, Ormat, Freepower, Green Energy Australasia and Infinityturbine etc.The development of China's organic substance working medium Rankine cycle generation technology and system starts from phase early 1970s.Although the organic substance working medium Rankine cycle generation technology of China has been developed for many years, China has technically still failed to make substantial breakthroughs at this.

Conventional organic substance working medium electricity-generating method could work under outside dynamic action, need to keep normal power generation state by after working medium pump pressurization, and working medium pump itself needs to consume a large amount of electric energy, cause overall system efficiency to reduce, control procedure also needs outside to provide electric power in addition.So the organic matter Rankine cycle power generation system of routine is large to outside degree of conditional independence, device maintenance cost is high, and the higher apparatus system efficiency that makes of parts energy consumption such as working medium pump is low simultaneously.

Summary of the invention

Object of the present invention is exactly providing a kind of reliable performance to overcome defect that above-mentioned prior art exists, relying on working medium to carry out the non-energy dynamic formula low-temperature heat energy organic matter working medium electricity-generating method operated by the rising that thermal evaporation realizes pressure at confined space.

Object of the present invention can be achieved through the following technical solutions:

Non-energy dynamic formula low-temperature heat energy organic matter working medium electricity-generating method, comprises the following steps:

Organic substance working medium in (1) first vaporizer is by thermal evaporation, first evaporator temperature and pressure constantly increase, when the pressure of organic substance working medium reaches setting pressure, first self-powering type voltage-controlled valve of the first evaporator outlet is opened under working pressure triggers, organic substance working substance steam enters turbine, promotion turbine does work, and drive electrical generators exports electric energy, and the weary gas of the low-pressure low-temperature after acting enters condenser condenses;

(2) condensed organic substance working medium flows into liquid container, treat to the greatest extent along with organic substance working medium in the first vaporizer consumes, pressure drop in vaporizer is to the setting value of self-powering type voltage-controlled valve, first self-powering type voltage-controlled valve and the 5th self-powering type voltage-controlled valve are closed automatically, second self-powering type voltage-controlled valve is opened automatically, under gravity, organic substance working medium in liquid container flows in the first vaporizer, again close through the second self-powering type voltage-controlled valve after a period of time, 5th self-powering type voltage-controlled valve is opened, organic substance working medium in first vaporizer is heated boosting wait and is circulated next time,

(3) when the first vaporizer refills liquid working substance, in second vaporizer, working medium is heated to setting pressure, 3rd self-powering type voltage-controlled valve is opened automatically, take over the first vaporizer and continue output services steam, turbine and generator is driven to export electric energy, second vaporizer filling working medium method is identical with the first vaporizer, 3rd self-powering type voltage-controlled valve, 5th self-powering type voltage-controlled valve is closed automatically, 4th self-powering type voltage-controlled valve is opened automatically, organic substance working medium flows into the second vaporizer from liquid container under gravity, after filling, 4th self-powering type voltage-controlled valve is closed automatically, 5th self-powering type voltage-controlled valve is opened automatically:

During (4) second vaporizers are filled organic substance working medium and are heated to operation point, in first vaporizer, by design, oneself is heated to setting value to organic substance power pressure, take over the second vaporizer output services steam, first vaporizer, two is output services steam in turn, continuous drive turbine acting, exports electric energy.

Described organic substance working medium is one or more in R245fa, R600, R600a, R141b or R142b.

Organic substance working medium in first vaporizer is by thermal evaporation, and temperature reaches 60 DEG C-180 DEG C, and pressure reaches setting pressure 0.5MPa-5MPa.

Organic substance working medium in second vaporizer is by thermal evaporation, and temperature reaches 60 DEG C-180 DEG C, and pressure reaches setting pressure 0.5MPa-5MPa.

The vapor (steam) temperature of described turbine entrance is 60 DEG C-180 DEG C, and pressure is 0.5MPa-5MPa.

Described turbine outlet pressure is 0.2MPa-1.0MPa, and outlet temperature is 30 DEG C-120 DEG C.

Described liquid container, than the position height 200-2000mm of the first vaporizer and the second vaporizer, utilizes gravitational potential energy difference fluid transfer working medium.

The thermal source heated vaporizer is underground heat, sunlight heat or industrial exhaust heat, and heat source temperature is 85 ~ 200 DEG C.

Low-temperature receiver condenser being carried out to condensation is underground water, river, seawater or air, and sink temperature is 0 ~ 40 DEG C.

The expansion ratio scope of described turbine is 1.5 ~ 15.

Compared with prior art, the present invention utilizes gravity for transport liquid working substance, and system, without working medium pump, relies on working medium to realize the rising of pressure at confined space by thermal evaporation; By self-powering type voltage-controlled valve, control realization generating is carried out to power generation process, whole power generation system structure is simple, reliable performance and cost is lower, be easy to realize miniaturization, practical.

Accompanying drawing explanation

Fig. 1 is the structural representation of the device that the method adopts.

In figure: 1 be turbine, 2 be generator, 3 be condenser, 4 be coupling for liquid container, 5 be the first vaporizer, 6 be the second vaporizer, 7 be the first self-powering type voltage-controlled valve, 8 be the second self-powering type voltage-controlled valve, 9 be the 3rd self-powering type voltage-controlled valve, 10 be the 4th self-powering type voltage-controlled valve, 11 is the voltage-controlled valve of the 5th self-powering type, 12.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.

The structure of non-energy dynamic formula organic substance working medium electricity generating device as shown in Figure 1, comprise: turbine 1, generator 2, condenser 3, liquid container 4, first vaporizer 5, second vaporizer 6, first self-powering type voltage-controlled valve 7, second self-powering type voltage-controlled valve 8, 3rd self-powering type voltage-controlled valve 9, 4th self-powering type voltage-controlled valve 10, 5th self-powering type voltage-controlled valve 11 and coupling 12, wherein outside low temperature heat source fluid is connected with the import and export of the first vaporizer 5 with the second vaporizer 6 heat source side respectively by pipeline, organic substance working medium in heating fumigators, first vaporizer 5 working medium side outlet is connected with turbine 1 entrance through the first self-powering type voltage-controlled valve 7, first vaporizer 5 working medium side entrance is connected with liquid container 4 bottom outlet through the second self-powering type voltage-controlled valve 8, second vaporizer 6 working medium side outlet is connected with turbine 1 entrance through the 3rd self-powering type voltage-controlled valve 9, second vaporizer 6 working medium side entrance is connected with liquid container 4 bottom outlet through the 4th self-powering type voltage-controlled valve 10, the axle of turbine 1 is connected with the axle of generator 2 by coupling 12, the outlet of turbine 1 is connected with condenser 3 working medium side entrance, the outlet of condenser 3 working medium side is connected with liquid container 4 top entry through the 5th self-powering type voltage-controlled valve 11, condenser 3 low-temperature receiver side is imported and exported and is connected with external source fluid respectively by pipeline.

The organic substance working medium that the present invention adopts has: R245fa, R600, R600a, R141b, R142b etc. or mixture.Liquid container of the present invention, than the relative position height 200-2000MM of vaporizer, utilizes gravitational potential energy difference fluid transfer working medium.

In use, the organic substance working medium in the first vaporizer 5, second vaporizer 6, by thermal evaporation, makes constantly to increase with temperature in vaporizer.Pass through appropriate design, in first vaporizer 5, power pressure first reaches turbine 1 design work pressure, the first self-powering type voltage-controlled valve 7 that first vaporizer 5 exports is opened under working pressure triggers, working steam enters turbine 1, promote turbine 1 to do work, drive electrical generators 2 exports electric energy, and the weary gas of the low-pressure low-temperature after acting enters condenser 3 condensation.Condensed liquid refrigerant flows into liquid container 4.Along with the consumption of working steam in the first vaporizer 5, pressure in vaporizer drops to the setting value of self-powering type voltage-controlled valve gradually, first self-powering type voltage-controlled valve 7 and the 5th self-powering type voltage-controlled valve 11 are closed automatically, second self-powering type voltage-controlled valve 8 is opened automatically, under gravity, liquid working substance in liquid container 4 flows in the first vaporizer 5 again, then the second self-powering type voltage-controlled valve 8 is closed again, 5th self-powering type voltage-controlled valve 11 is opened, and in the first vaporizer 5, working medium is waited for circulation once by heat source boosting in seal container.When first vaporizer 5 refills, namely the first self-powering type voltage-controlled valve 7, the 5th self-powering type voltage-controlled valve 11 close and the 3rd self-powering type voltage-controlled valve 9 opens time, in second vaporizer 8, power pressure is heated to design load, 3rd self-powering type voltage-controlled valve 9 is opened automatically, take over the first vaporizer 5 and continue output services steam, take turbine and generator output electric energy to.It is identical with the first vaporizer 5 that working medium method filled by second vaporizer 6,3rd self-powering type voltage-controlled valve 9,5 11 is closed automatically, 4th self-powering type voltage-controlled valve 10 is opened automatically, liquid refrigerant flows into the second vaporizer 6 from liquid container 4 under gravity, after filling, 4th self-powering type voltage-controlled valve 10 is closed automatically, and the 5th self-powering type voltage-controlled valve 11 is opened automatically.During second vaporizer 6 is filled working medium and is heated to operation point, in the first vaporizer 5, power pressure is heated to design load by design, just in time takes over the first vaporizer 5 output services steam.First vaporizer 5,26 output services steam in turn, thus can turbine be driven continuously to do work, export electric energy.

The present embodiment can utilize solar energy, underground heat, low temperature exhaust heat equitemperature scope at the low temperature heat energy of 60 DEG C ~ 200 DEG C as thermal source, the working pressure of vaporizer be liquid working substance heat source temperature at 60 ~ 200 DEG C time corresponding saturation pressure.With underground water, river, seawater or air for low-temperature receiver, sink temperature scope is 0 ~ 40 DEG C, the working pressure of condenser be liquid working substance cooling water or cooling air temperature at 0 DEG C ~ 40 DEG C time corresponding saturation pressure.This device can rely on underground water, river (sea) water or air to carry out work as low-temperature receiver, and the generated output that can realize by thousands of watts to hundreds of kilowatts, below can carry out specific operation.

Embodiment 1

Working medium R600a, heat source temperature 120 DEG C, cooling water temperature is 20 DEG C.Evaporator evaporation temperature is 100 DEG C, and evaporating pressure is 1.98MPa, and steam generation rate is 1.8kg/s; Condensing air condensing temperature is 30 DEG C, and condensing pressure is 0.403MPa, and heat exchanger efficiency is 0.9; Turbine expansion ratio is 5.0, and efficiency of turbine is 0.8.In addition, first, second vaporizer internal capacity is 0.2m3, and liquid container internal capacity is 0.4m3, and the inner initial liquid storage amount of liquid container is 120kg.The present invention carries out work by following steps:

(1) second self-powering type voltage-controlled valve is opened automatically, and in liquid container, the liquid working substance of about 30 DEG C flows into the first vaporizer under gravity, and after liquid level equilibrium, the second self-powering type voltage-controlled valve is closed, and is enclosed in by the liquid working substance of 60kg in the first vaporizer;

In (2) first vaporizers, liquid working substance is by thermal evaporation, and Temperature of Working and pressure constantly increase, and reach 100 DEG C, 1.98MPa, and this parameter is turbine inlet steam parameter;

First self-powering type voltage-controlled valve of (3) first evaporator outlets is opened under pressure automatically, working steam enters turbine expansion acting with the mass velocity of 1.8kg/s, take generator to and export electric energy, turbine outlet pressure and temperature are respectively 0.403MPa and 47.4 DEG C;

(4) working medium is condensed into the saturated liquid state of 30 DEG C within the condenser, flows into liquid container subsequently.

(5) in power generation process, the liquid working substance in the first vaporizer constantly by thermal evaporation, evaporates after about 26s completely.After this power pressure is dropped rapidly to condensing pressure, and now the second self-powering type voltage-controlled valve is opened automatically, and the first self-powering type voltage-controlled valve and five is closed automatically, and the saturated liquid refrigerant in liquid container flows under the influence of gravity in vaporizer.When the first vaporizer is filled after working medium process terminates, the second self-powering type voltage-controlled valve is closed automatically, and the 5th self-powering type voltage-controlled valve is opened automatically, and working medium is heated supercharging in the first vaporizer, takes over the second vaporizer, continue output services steam during projected working point to be achieved.

(6) when working medium filled by the first vaporizer, in second vaporizer, working medium reaches operation point by design, automatically open under the triggering of the 3rd self-powering type voltage-controlled valve working pressure in the second vaporizer, take over the first vaporizer output services steam, drive turbine and generator to export electric energy.When in the second vaporizer, working medium is evaporated full-time, second vaporizer need refill working medium, its method and the first vaporizer sample, and the 3rd self-powering type voltage-controlled valve, the 5th self-powering type voltage-controlled valve are closed automatically, 4th self-powering type voltage-controlled valve is opened, and in liquid container, working medium enters the second vaporizer under gravity; Meanwhile, in the first vaporizer, working medium reaches operation point by design, and the first self-powering type voltage-controlled valve is opened automatically, takes over the second vaporizer, continues output services steam, drives turbine and generator to export electric energy.

(7) the present invention adopts two vaporizers, and the first vaporizer and the second vaporizer export high temperature and high pressure steam in turn, drive turbine, drive electrical generators, thus assurance device can export electric energy continuously.

Under this example, system thermal efficiency is 13.7%, and generated output is 56.8KW.

Embodiment 2

Working medium R245fa, heat source temperature 120 DEG C, cooling water temperature is 20 DEG C.Evaporator evaporation temperature is 100 DEG C, and evaporating pressure is 1.26MPa, and steam generation rate is 4kg/s; Condensing air condensing temperature is 30 DEG C, and condensing pressure is 0.177MPa, and heat exchanger efficiency is 0.9; Turbine expansion ratio is 7.1, and efficiency of turbine is 0.8.In addition, first, second vaporizer internal capacity is 2m3, and liquid container internal capacity is 3m3, and the inner initial liquid storage amount of liquid container is 2400kg.The present invention carries out work by following steps:

(1) second self-powering type voltage-controlled valve is opened automatically, and in liquid container, the liquid working substance of about 30 DEG C flows into the first vaporizer under gravity, and after liquid level equilibrium, the second self-powering type voltage-controlled valve is closed, and is enclosed in by the liquid working substance of 1200kg in the first vaporizer;

In (2) first vaporizers, liquid working substance is by thermal evaporation, and Temperature of Working and pressure constantly increase, and the most always arrive 100 DEG C, 1.26MPa, this parameter is turbine inlet steam parameter;

First self-powering type voltage-controlled valve of (3) first evaporator outlets is opened under pressure automatically, working steam enters turbine expansion acting with the mass velocity of 4kg/s, take generator to and export electric energy, turbine outlet pressure and temperature are respectively 0.177MPa and 49.5 DEG C;

(4) working medium is condensed into the saturated liquid state of 30 DEG C within the condenser, flows into liquid container subsequently.

(5) in power generation process, the liquid working substance in the first vaporizer constantly by thermal evaporation, evaporates after 260s completely.After this power pressure is dropped rapidly to condensing pressure, and now the second self-powering type voltage-controlled valve is opened automatically, and the first self-powering type voltage-controlled valve and five is closed automatically, and the saturated liquid refrigerant in liquid container flows under the influence of gravity in vaporizer.When the first vaporizer is filled after working medium process terminates, the second self-powering type voltage-controlled valve is closed automatically, and the 5th self-powering type voltage-controlled valve is opened automatically, and working medium is heated supercharging in the first vaporizer, takes over the second vaporizer, continue output services steam during projected working point to be achieved.

(6) when working medium filled by the first vaporizer, in second vaporizer, working medium reaches operation point by design, automatically open under the triggering of the 3rd self-powering type voltage-controlled valve working pressure in the second vaporizer, take over the first vaporizer output services steam, drive turbine and generator to export electric energy.When in the second vaporizer, working medium is evaporated full-time, second vaporizer need refill working medium, its method and the first vaporizer sample, and the 3rd self-powering type voltage-controlled valve, the 5th self-powering type voltage-controlled valve are closed automatically, 4th self-powering type voltage-controlled valve is opened, and in liquid container, working medium enters the second vaporizer under gravity; Meanwhile, in the first vaporizer, working medium reaches operation point by design, and the first self-powering type voltage-controlled valve is opened automatically, takes over the second vaporizer, continues output services steam, drives turbine and generator to export electric energy.

(7) the present invention adopts two vaporizers, and the first vaporizer and the second vaporizer export high temperature and high pressure steam in turn, drive turbine, drive electrical generators, thus assurance device can export electric energy continuously.

Under this example, system thermal efficiency is 15.5%, and generated output is 92.6KW.

Embodiment 3

Working medium R141b, heat source temperature 120 DEG C, cooling water temperature is 20 DEG C.Evaporator evaporation temperature is 100 DEG C, and evaporating pressure is 0.675MPa, and steam generation rate is 20kg/s; Condensing air condensing temperature is 30 DEG C, and condensing pressure is 0.094MPa, and heat exchanger efficiency is 0.9; Turbine expansion ratio is 7.2, and efficiency of turbine is 0.8.In addition, first, second vaporizer internal capacity is 2m3, and liquid container internal capacity is 3m3, and the inner initial liquid storage amount of liquid container is 2400kg.The present invention carries out work by following steps:

(1) second self-powering type voltage-controlled valve is opened automatically, and in liquid container, the liquid working substance of about 30 DEG C flows into the first vaporizer under gravity, and after liquid level equilibrium, the second self-powering type voltage-controlled valve is closed, and is enclosed in by the liquid working substance of 1200kg in the first vaporizer;

In (2) first vaporizers, liquid working substance is by thermal evaporation, and Temperature of Working and pressure constantly increase, and the most always arrive 100 DEG C, 0.675MPa, this parameter is turbine inlet steam parameter;

First self-powering type voltage-controlled valve of (3) first evaporator outlets is opened under pressure automatically, working steam enters turbine expansion acting with the mass velocity of 4kg/s, take generator to and export electric energy, turbine outlet pressure and temperature are respectively 0.094MPa and 44.5 DEG C;

(4) working medium is condensed into the saturated liquid state of 30 DEG C within the condenser, flows into liquid container subsequently.

(5) in power generation process, the liquid working substance in the first vaporizer constantly by thermal evaporation, evaporates after 55.9s completely.After this power pressure is dropped rapidly to condensing pressure, and now the second self-powering type voltage-controlled valve is opened automatically, and the first self-powering type voltage-controlled valve and five is closed automatically, and the saturated liquid refrigerant in liquid container flows under the influence of gravity in vaporizer.When the first vaporizer is filled after working medium process terminates, the second self-powering type voltage-controlled valve is closed automatically, and the 5th self-powering type voltage-controlled valve is opened automatically, and working medium is heated supercharging in the first vaporizer, takes over the second vaporizer, continue output services steam during projected working point to be achieved.

(6) when working medium filled by the first vaporizer, in second vaporizer, working medium reaches operation point by design, automatically open under the triggering of the 3rd self-powering type voltage-controlled valve working pressure in the second vaporizer, take over the first vaporizer output services steam, drive turbine and generator to export electric energy.When in the second vaporizer, working medium is evaporated full-time, second vaporizer need refill working medium, its method and the first vaporizer sample, and the 3rd self-powering type voltage-controlled valve, the 5th self-powering type voltage-controlled valve are closed automatically, 4th self-powering type voltage-controlled valve is opened, and in liquid container, working medium enters the second vaporizer under gravity; Meanwhile, in the first vaporizer, working medium reaches operation point by design, and the first self-powering type voltage-controlled valve is opened automatically, takes over the second vaporizer, continues output services steam, drives turbine and generator to export electric energy.

(7) the present invention adopts two vaporizers, and the first vaporizer and the second vaporizer export high temperature and high pressure steam in turn, drive turbine, drive electrical generators, thus assurance device can export electric energy continuously.

Under this example, system thermal efficiency is 13.7%, and generated output is 560KW.

Claims (10)

1. non-energy dynamic formula low-temperature heat energy organic matter working medium electricity-generating method, it is characterized in that, the method comprises the following steps:
Organic substance working medium in (1) first vaporizer is by thermal evaporation, first evaporator temperature and pressure constantly increase, when the pressure of organic substance working medium reaches setting pressure, first self-powering type voltage-controlled valve of the first evaporator outlet is opened under working pressure triggers, organic substance working substance steam enters turbine, promotion turbine does work, and drive electrical generators exports electric energy, and the low-pressure low-temperature exhaust steam after acting enters condenser condenses;
(2) condensed organic substance working medium flows into liquid container, treat to the greatest extent along with organic substance working medium in the first vaporizer consumes, pressure drop in first vaporizer is to the setting value of the first self-powering type voltage-controlled valve, first self-powering type voltage-controlled valve and the 5th self-powering type voltage-controlled valve are closed automatically, second self-powering type voltage-controlled valve is opened automatically, under gravity, organic substance working medium in liquid container flows in the first vaporizer, again close through the second self-powering type voltage-controlled valve after a period of time, 5th self-powering type voltage-controlled valve is opened, organic substance working medium in first vaporizer is heated boosting wait and is circulated next time,
(3) when the first vaporizer refills organic substance working medium, in second vaporizer, working medium is heated to setting pressure, 3rd self-powering type voltage-controlled valve is opened automatically, take over the first vaporizer and continue output services steam, turbine and generator is driven to export electric energy, second vaporizer filling working medium method is identical with the first vaporizer, 3rd self-powering type voltage-controlled valve, 5th self-powering type voltage-controlled valve is closed automatically, 4th self-powering type voltage-controlled valve is opened automatically, organic substance working medium flows into the second vaporizer from liquid container under gravity, after filling, 4th self-powering type voltage-controlled valve is closed automatically, 5th self-powering type voltage-controlled valve is opened automatically,
During (4) second vaporizers are filled organic substance working medium and are heated to operation point, in first vaporizer, organic substance power pressure is heated to setting value by design, take over the second vaporizer output services steam, first vaporizer, the second vaporizer output services steam in turn, continuous drive turbine acting, exports electric energy.
2. non-energy dynamic formula low-temperature heat energy organic matter working medium electricity-generating method according to claim 1, it is characterized in that, described organic substance working medium is one or more in R245fa, R600, R600a, R141b or R142b.
3. non-energy dynamic formula low-temperature heat energy organic matter working medium electricity-generating method according to claim 1, it is characterized in that, the organic substance working medium in the first vaporizer is by thermal evaporation, and temperature reaches 60 DEG C-180 DEG C, and pressure reaches setting pressure 0.5MPa-5MPa.
4. non-energy dynamic formula low-temperature heat energy organic matter working medium electricity-generating method according to claim 1, it is characterized in that, the organic substance working medium in the second vaporizer is by thermal evaporation, and temperature reaches 60 DEG C-180 DEG C, and pressure reaches setting pressure 0.5MPa-5MPa.
5. non-energy dynamic formula low-temperature heat energy organic matter working medium electricity-generating method according to claim 1, it is characterized in that, the vapor (steam) temperature of described turbine entrance is 60 DEG C-180 DEG C, and pressure is 0.5MPa-5MPa.
6. non-energy dynamic formula low-temperature heat energy organic matter working medium electricity-generating method according to claim 1, it is characterized in that, described turbine outlet pressure is 0.2MPa-1.0MPa, and outlet temperature is 30 DEG C-120 DEG C.
7. according to claim 1 non-can dynamic formula low-temperature heat energy organic matter working medium electricity-generating method, it is characterized in that, described liquid container, than the position height 200mm-2000mm of the first vaporizer and the second vaporizer, utilizes gravitational potential energy difference to transmit organic substance working medium.
8. non-energy dynamic formula low-temperature heat energy organic matter working medium electricity-generating method according to claim 1, it is characterized in that, the thermal source heated the first vaporizer and the second vaporizer is underground heat, sunlight heat or industrial exhaust heat, and heat source temperature is 85 DEG C ~ 200 DEG C.
9. non-energy dynamic formula low-temperature heat energy organic matter working medium electricity-generating method according to claim 1, it is characterized in that, low-temperature receiver condenser being carried out to condensation is underground water, river, seawater or air, and sink temperature is 0 DEG C ~ 40 DEG C.
10. non-energy dynamic formula low-temperature heat energy organic matter working medium electricity-generating method according to claim 1, it is characterized in that, the expansion ratio scope of described turbine is 1.5 ~ 15.
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