CN107587907A - A kind of working system and method using low-temperature heat source - Google Patents
A kind of working system and method using low-temperature heat source Download PDFInfo
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- CN107587907A CN107587907A CN201710801275.9A CN201710801275A CN107587907A CN 107587907 A CN107587907 A CN 107587907A CN 201710801275 A CN201710801275 A CN 201710801275A CN 107587907 A CN107587907 A CN 107587907A
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Abstract
The invention discloses a kind of working system and method using low-temperature heat source.This includes working medium circulation working system using the working system of low-temperature heat source, the working medium circulation working system includes pressure generator, acting device and evaporator, and the pressure generator, acting device connect for acting working medium circulation flowing from beginning to end successively with evaporator；The evaporator obtains steam working medium and the liquid working substance less than room temperature during the acting working medium is vaporized, the liquid working substance less than room temperature absorbs the heat of low-temperature heat source before or after the pressure generator is returned, the steam working medium returns to the heating liquid working substance in the pressure generator and lifts the steam pressure in the pressure generator, to promote liquid working substance to be done work in the acting device.This can utilize the low-temperature heat source in environment using the working system of low-temperature heat source, reduce energy consumption and save the energy.
Description
Technical field
The present invention relates to circular work or technical field of power generation, and in particular to a kind of working system using low-temperature heat source
And method.
Background technology
So far, most of device for doing work or generating electricity all be using the expansion of high temperature and high pressure gas reach acting or
Person generates electricity.The method for forming high temperature and high pressure gas has two kinds：One kind is directly to form high temperature and high pressure gas by fuel combustion；Separately
One kind is to heat liquid working substance, such as water by fuel combustion, makes liquid working substance evaporate to form high temperature and high pressure gas, such as internal combustion
Machine, gas turbine, steam engine etc..
By way of fuel combustion directly obtains high temperature and high pressure gas, higher is required to the temperature and pressure of gas, when
When gas temperature and pressure drop to certain value, the gas is no longer appropriate for doing work, and can only be drained as waste gas, so thermal efficiency ratio
It is relatively low.
Liquid working substance is heated by mode of heating, liquid working substance is flashed to high temperature and high pressure gas, is done by gas working medium
Work(, temperature and pressure is fallen too low after gas working medium acting, it is difficult to which direct recycling, can only be liquefied as liquid by gas working medium
Body working medium, liquid working substance is heated into high temperature and high pressure gas again before acting.Substantial amounts of low temperature heat energy is discharged into ring by this process
In border, and the latent heat of vaporization of working medium is far above specific heat capacity, so thermal efficiency ratio is relatively low.
In addition, refrigeration system major part causes steam in evaporator by the steam of compressor compresses refrigeration working medium at present
Pressure reduces, and promotes refrigerant evaporation to reach the purpose of cooling.High temperature and high pressure steam caused by compressor passes through condenser, leads to
Condensation working medium is crossed to distribute heat in surrounding environment.In the process, not only scattered and disappeared substantial amounts of low temperature heat energy, also have lost
Substantial amounts of cooling water.
To sum up, on the one hand existing acting device and the device to generate electricity waste substantial amounts of low temperature heat energy, on the other hand, right
Existing a large amount of low-temperature heat sources or used heat can not utilize.
The content of the invention
It is existing low to solve it is an object of the invention to provide a kind of working system and method using low-temperature heat source
The problem of warming the waste of energy and low-temperature heat source can not be utilized.
To achieve the above object, the technical scheme is that providing a kind of working system using low-temperature heat source, institute
State includes working medium circulation working system using the working system of low-temperature heat source, and the working medium circulation working system is sent out including pressure
Raw device, acting device and evaporator, the pressure generator, acting device connect for working medium of doing work from beginning to end successively with evaporator
Circulate；The evaporator obtains steam working medium and the liquid work less than room temperature during the acting working medium is vaporized
Matter, the liquid working substance less than room temperature absorb the heat of low-temperature heat source, institute before or after the pressure generator is returned
Steam working medium is stated to return to the heating liquid working substance in the pressure generator and lift the vapour pressure in the pressure generator
Power, to promote liquid working substance to be done work in the acting device.
Preferably, the working medium circulation working system also includes vapour compression unit, and the vapour compression unit is connected in
Between the evaporator and the pressure generator, the vapour compression unit compresses steam working medium caused by the evaporator
To reduce the pressure of steam in the evaporator, and by the steam working medium force feed after compression to the pressure generator；
Or the working medium circulation working system also includes equipment for steam treatment, steam suction is provided with the evaporator
To knock off matter, the vapor absorption working medium absorbs the steam of the acting working medium, to reduce the pressure of steam in described evaporator,
The absorbed acting working medium is transported to the equipment for steam treatment together with described vapor absorption working medium, makes the acting
Working medium separates with the vapor absorption working medium, and the acting working medium returns to pressure generator with liquid or stream mode.
Preferably, the working system using low-temperature heat source includes the n levels working medium circulation acting connected step by step
System, also, evaporator described in upper level is set with vapour compression unit described in next stage with heat exchange method, wherein, n is big
In or equal to 2 positive integer.
Preferably, the working system using low-temperature heat source also includes steam working system, the steam acting system
System includes steam working system pressure generator, steam working system acting device and steam working system working medium pump, the steaming
Vapour working system pressure generator, steam working system acting device and steam working system working medium pump head and the tail are sequentially communicated；
Also, the vapour compression unit of the steam working system pressure generator and the working medium circulation working system with
Heat exchange method is set, and the evaporator of steam working system acting device and the working medium circulation working system is handed over heat
The mode of changing is set；
Or the pressure generator of the steam working system acting device and the working medium circulation working system is handed over heat
The mode of changing is set.
Preferably, steam working system, the steam working system include steam working system pressure generator and steam
Working system acting device, the steam working system pressure generator, steam working system acting device, the pressure occur
Device, the acting device connect from beginning to end successively with the evaporator, so that acting working medium is sent out in the steam working system pressure
Recycle stream successively in raw device, steam working system acting device, the pressure generator, the acting device and the evaporator
It is dynamic, and, the working medium entrances of the sender property outlet of the pressure generator and the steam working system pressure generator connect
Logical, the sender property outlet of the evaporator connects with the working medium entrances of the pressure generator.
Preferably, the working system using low-temperature heat source include multiple pressure generators for being arranged in parallel and
Multiple acting devices, the multiple pressure generator circulate successively the liquid working substance that receives evaporator output and
The steam working medium, multiple acting devices are set up in parallel and with this circular work.
Preferably, heating source is provided with the pressure generator, when the pressure generator is received less than room temperature
During the liquid working substance, the liquid working substance is heated after absorbing the heat in low-temperature heat source first by the heating source, to improve
Steam pressure in the pressure generator.
Preferably, the acting working medium includes the first acting working medium and the second acting working medium, moreover, the first acting work
Matter can mix with the second acting working medium, or be dissolved in the second acting working medium；In the evaporator, do work working substance steam quilt
Vapor absorption working medium absorbs, and reduces the vapour pressure of acting working medium in evaporator, absorbed acting working substance steam and described steaming
Vapour absorbs working medium and is transported to equipment for steam treatment together, steam is separated with described vapor absorption working medium, with liquid or steaming
The mode of vapour comes back to pressure generator.
Wherein, the working medium circulation working system also includes First Heat Exchanger and/or the second heat exchanger, first heat exchange
The working medium entrances of device connect with the sender property outlet of the pressure generator, the sender property outlet of the First Heat Exchanger and the acting
The working medium entrances connection of device, the First Heat Exchanger are used for the temperature for being lowered into the acting working medium of the acting device
Degree；The working medium entrances of second heat exchanger connect with the sender property outlet of the acting device, the working medium of second heat exchanger
Outlet connects with the working medium entrances of the evaporator, and second heat exchanger is used to improve the acting for entering the evaporator
The temperature of working medium.
Preferably, the working system using low-temperature heat source also includes energy storage device, the energy storage device with it is described
The energy output end connection of acting device, for storing the energy of the acting device output.
The present invention also provides a kind of method using low-temperature heat source acting, and methods described is provided described based on the present invention
Working system, this method comprise the following steps：
Step S1, the liquid working substance in heated pressure generator, vaporizes it and improves steam in the pressure generator
Pressure, by liquid working substance force feed to the device that does work；
Step S2, the liquid working substance is in acting device by force feed to evaporator after completion acting；
Step S3, the liquid working substance is vaporized in the evaporator obtains steam working medium, meanwhile, the steam working medium
Absorbed by vapor absorption working medium in the evaporator, and discharge the evaporator；
Step S4, the steam working medium is separated with the vapor absorption working medium, and by the steam working medium after separation
The pressure generator is returned to, while the vapor absorption working medium is returned to the evaporator.
The invention has the advantages that：
Working system provided by the invention using low-temperature heat source, acting working medium can produce when being evaporated in evaporator
Less than the cryogenic liquid working and steam working medium of room temperature, the cryogenic liquid working is in pressure generator or is entering pressure
The heat in low-temperature heat source is absorbed before device, its temperature is reached the temperature of low-temperature heat source, is heated afterwards by heating source to enter one
The temperature that step improves acting working medium simultaneously makes its vaporization, can subtract because liquid working substance absorbs the heat of low-temperature heat source, during vaporization
The consumption of few energy, and in pressure generator, cryogenic liquid working can utilize the high-temperature steam working medium of evaporator output
In heat or make its vaporization, so as to by evaporator discharge recycle heat utilize.Therefore, the working system not merely with
Low-temperature heat source in such as air, rivers,lakes and seas environment, expands the source range that comes of energy, and recycled evaporator
Heat in caused steam working medium, has saved the energy.
Brief description of the drawings
Fig. 1 is working medium circulation working system in the working system using low-temperature heat source that the embodiment of the present invention 1 provides
Connection relationship diagram；
Fig. 2 is that working medium is followed in the working system using low-temperature heat source that the preferred embodiment of the embodiment of the present invention 1 provides
The connection relationship diagram of ring working system；
Fig. 3 is working medium circulation working system in the working system using low-temperature heat source that the embodiment of the present invention 2 provides
Connection relationship diagram；
Fig. 4 is working medium circulation working system in the working system using low-temperature heat source that the embodiment of the present invention 3 provides
Connection relationship diagram；
Fig. 5 is two duplex matter systems in the working system using low-temperature heat source that the embodiment of the present invention 4 provides
Connection relationship diagram；
Fig. 6 is that working substance system does work with steam in the working system using low-temperature heat source that the embodiment of the present invention 5 provides
The connection relationship diagram of device；
Fig. 7 is that working substance system does work with steam in the working system using low-temperature heat source that the embodiment of the present invention 6 provides
The connection relationship diagram of device；
Fig. 8 is that working substance system does work with steam in the working system using low-temperature heat source that the embodiment of the present invention 7 provides
The connection relationship diagram of device；
Fig. 9 is working substance system and refrigeration system in the working system using low-temperature heat source that the embodiment of the present invention 8 provides
Connection relationship diagram；
Figure 10 is the flow chart for the work method using low-temperature heat source that the embodiment of the present invention 9 provides.
In the figures above, solid line represents the flowing of liquid working substance, and dotted line represents the flowing of steam working medium, and chain-dotted line represents
Heat exchange.
Embodiment
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
Embodiment 1
As shown in figure 1, the working system using low-temperature heat source that embodiment 1 provides includes working medium circulation working system 1,
Working medium circulation working system 1 includes pressure generator 11, acting device 12 and evaporator 13, pressure generator 11, acting device
12 are connected from beginning to end successively with evaporator 13 by pipeline, i.e. the working medium of the sender property outlet of pressure generator 11 and acting device 12 enters
For mouth by pipeline connection, the sender property outlet of device 12 that does work passes through pipeline connection, evaporator 13 with the working medium entrances of evaporator 13
Sender property outlet and pressure generator 11 input port by pipeline connection, acting working medium by pipeline pressure generator 11,
Circulated between acting device 12 and evaporator 13, pressure differential of the acting working medium between pressure generator 11 and evaporator 13
The power of acting is provided for acting device 12.
It is pointed out that the working medium entrances of pressure generator 11 include liquid working substance entrance and steam working medium entrances, steam
Sending out the sender property outlet of device 13 includes liquid working substance outlet and steam sender property outlet.It can be appreciated that the liquid working substance of evaporator 13 goes out
Mouth connection corresponding with the liquid working substance entrance of pressure generator 11, steam sender property outlet and the pressure generator 11 of evaporator 13
Steam working medium entrances are corresponding to be connected.For the ease of description, hereafter most cases by the liquid working substance entrance of pressure generator 11 and
Steam working medium entrances are referred to as the working medium entrances of pressure generator 11, and the liquid working substance outlet and steam working medium by evaporator 13 go out
Mouth is referred to as the sender property outlet of evaporator 13.When only especially emphasizing liquid working substance and steam working medium, just especially steam work is used
Matter entrance, steam sender property outlet, liquid working substance entrance or liquid working substance outlet statement.
Caused high steam pressure is needed in pressure generator 11, acting working medium force feed is extremely done work in device 12
Acting, afterwards by force feed to evaporator 13.However, when the temperature for working medium of doing work is too high, the life-span for the device 12 that does work can be produced
Raw adverse effect, therefore, it is necessary to it is lowered into the temperature of the acting working medium of acting device 12.That is, acting working medium is being pressed
Both need heat absorption to improve acting Temperature of Working and steam pressure in forcer 11, and need heat release again to be lowered into acting device
Temperature in 12, it can be simply considered that pressure generator 11 divides for three sections, leading portion and stage casing need to absorb heat, are steamed to improve
Steam pressure, that is, increase the pressure differential between pressure generator 11 and evaporator 13, so as to improve the efficiency of acting；Back segment needs to release
Thermal discharge, to reduce adverse effect of the acting working medium to the device 12 that does work.
Evaporator 13 is used to vaporize acting working medium, needs during carburation by evaporation acting working medium in evaporator 13 to absorb substantial amounts of
Heat, the temperature of unboiled liquid working substance is caused to be reduced to below room temperature.The cryogenic liquid working can absorb low-temperature heat source
In heat, low-temperature heat source referred herein includes but is not limited to air, rivers,lakes and seas.
In the present embodiment, evaporator 13 can use refrigerating evaporator, and swollen in the working medium entrances setting of refrigerating evaporator
Swollen device, i.e. the sender property outlet of acting device 12 is connected with the working medium entrances of expansion gear by conduit, the working medium of expansion gear
Outlet is connected with the working medium entrances of evaporator 13 by conduit.Expansion gear can expand acting working medium, so as to be advantageous to evaporate
The carburation by evaporation of device 13 acting working medium.
The present embodiment is provided with heat exchanger (not shown) in pressure generator 11, when acting in pressure generator 11
When working medium is less than room temperature, acting working medium absorbs the heat in low-temperature heat source by heat exchanger, and the temperature for working medium of doing work is improved
To room temperature.
In addition, even if cryogenic liquid working absorbs the heat of low-temperature heat source, but these shortages of heat are so that acting working medium pair
The device that does work does work, and therefore, the present embodiment is also provided with heating source (not shown) in pressure generator 11, heating
Source is as thermal source at higher temperature, for improving the temperature of acting working medium and making acting working medium carburation by evaporation, when acting device 12 needs
When exporting relatively high power, heating source can improve the pressure of steam working medium, increase between pressure generator 11 and evaporator 13
Pressure differential, so that acting device 12 provides bigger power output.
In addition, heating source can also be arranged on the outside of pressure generator 11, done in the external heat of pressure generator 11
Work(medium；Or heat-conducting medium is heated with heating source, then acting working medium is heated by heat-conducting medium,
It should be noted that the working medium circulation working system that the present embodiment provides can only set heat exchanger and heating source it
One, heat exchanger and heating source can also be set simultaneously.
As a preferred embodiment of the present embodiment, as shown in Fig. 2 working medium circulation working system also includes both vapor compression
Device 14, vapour compression unit 14 are connected between evaporator 13 and pressure generator 11, i.e. the working medium of vapour compression unit 14
The sender property outlet of entrance and evaporator 13 passes through pipeline connection, sender property outlet and the pressure generator 11 of vapour compression unit 14
Entrance passes through pipeline connection.Vapour compression unit 14 can compress steam working medium caused by evaporator 13, on the one hand, reduce
The pressure of steam in evaporator 13, makes the pressure in evaporator 13 maintain in relatively low scope, so as to increase pressure generator
Pressure differential between 11 and evaporator 13, and then improve the mechanical efficiency of acting device；On the other hand, HTHP steaming is obtained
Vapour working medium, and, to recycle its heat, heat energy will be reduced in high temperature and high pressure steam working medium force feed to pressure generator 11
Waste.
In the present embodiment, evaporator 13 is flash distillation pot type evaporator, and steam working medium caused by flash distillation pot type evaporator is led to
Force feed is crossed after vapour compression unit 14 compresses to pressure generator 11, flashing cryogenic liquid working caused by pot type evaporator can be with
Pass through working medium pump (not shown) returning pressure generator 11.Before cryogenic liquid working is in entrance pressure generator 11,
The heat that can first absorb in environment makes it essentially identical with environment temperature, and heated up into pressure generator 11 vaporizes afterwards, by
The heat in environment is absorbed in cryogenic liquid working, so as to reduce the energy needed for liquid working substance vaporization.
It can be appreciated that vapour compression unit 14 improves pressure while steam pressure in evaporator 13 is reduced
Steam pressure in device 11, be advantageous to improve the efficiency of acting device acting.In the present embodiment, vapour compression unit 14 uses
But it is not limited to mechanical compress (such as compressor) and steam injection compression set.
In addition, caused cryogenic liquid working can also pass through pressure generator 11 and evaporation in flash distillation pot type evaporator 13
Pressure differential between device 13 is by force feed to pressure generator 11, i.e. extracts the steam work in pressure generator 11 by compressor
Matter, the pressure for making pressure in pressure generator 11 be less than in evaporator 13, by pressure differential by liquid working substance from the force feed of evaporator 13
To pressure generator 11.Cryogenic liquid working first passes through heat exchanger in pressure generator 13 and absorbed in environment in low-temperature heat source
Heat, heated after temperature and the environment temperature of liquid working substance are essentially identical, then by higher thermal source.
, can be with addition to using compress mode discharge steam working medium in order to promote in evaporator 13 liquid working substance to evaporate
Using the method for absorption.Such as have using lithium bromide concentrated solution absorption vapor the characteristics of, inhaled by lithium bromide concentrated solution
Vapor is received, reduces the pressure of vapor in evaporator 13, promotes the evaporation of liquid working substance in evaporator.After vapor being absorbed
The lithium bromide weak solution of formation is sent into equipment for steam treatment, is evaporated the water by heating lithium bromide weak solution mode, obtained again
Lithium bromide concentrated solution, then lithium bromide concentrated solution is re-fed into evaporator 13 and recycled.According to selected acting working medium, profit
Absorb the steam of acting working medium with appropriate absorption working medium, then by steam treatment, by the steam of obtained acting working medium or
Liquid is sent into pressure generator circulation.
In addition, in the present embodiment, acting working medium can use single working medium, i.e., using a kind of acting working medium；Can also
Using two or more acting working medium, the saturated vapor pressure of a variety of acting working medium is different and vapourizing temperature is different, moreover, more
Kind acting working medium can be mutually sufficiently mixed, or one or more acting working medium dissolve in another working medium of doing work.
During using two kinds of acting working medium, there is advantages below using a variety of acting working medium：
First, in evaporator during heating acting working medium, the low acting working medium of vapourizing temperature easily produces steam, is formed high
Steam is pressed, therefore, comparing, relatively low temperature can produce steam, so as to reduce the power consumption of pressure generator, and it is identical
At a temperature of can obtain higher steam pressure, be advantageous to improve liquid working substance acting ability.When liquid working substance is all pushed away
After going out pressure generator, the cooling of steam working medium can be made to be condensed into liquid working substance with the heat exchanger in pressure generator.
Second, the high acting working medium of saturated vapor pressure easy carburation by evaporation in evaporator, this is advantageous to make acting working medium
Returning pressure generator, and be advantageous to absorb the heat of low-temperature heat source.
Third, when one kind acting working medium is dissolved in another acting working medium, solubility will decline when the temperature increases, quilt
The acting working medium of dissolving easily separates out in gaseous form, promotes liquid acting working medium acting.All released and pressed when liquid working substance
After forcer, steam working medium can be made to cool with the heat exchanger in pressure generator, with the decline of temperature and pressure, recovered
Solubility, and steam working medium is dissolved in liquid working substance, so as to keep pressure generator continuous doing work.When what is be dissolved does
Work(working medium is that next power cycle is prepared after being heated again.
The selection of acting working medium can also be a kind of solute working medium for being soluble in solvent, in temperature rise, pressure rise,
Solubility reduces, and is separated out from solvent working medium, forms steam.For example ammonia and water, ammonia are highly soluble in water.In temperature and pressure liter
Gao Shi, solubility of the ammonia in water decline, and ammonia is separated out from water, and ammonia is formed on the water surface.The ammonia air pressure can promote liquid
Body working-medium water does work.After the liquid working substance in pressure generator all flows out, pressure is cooled down using the heat exchanger in pressure generator
The gaseous ammonia of high temperature in forcer, liquid working substance water is imported after the temperature reduction of ammonia, ammonia is incorporated liquid water rapidly
In, prepare to start power cycle next time.
Therefore, a variant embodiment as the present embodiment, acting working medium include the first acting working medium and the second acting
Working medium, moreover, the first acting working medium dissolves in the second acting working medium；Gaseous second acting working medium is dissolved in liquid or gaseous state
Vapor absorption working medium in reduce the pressure in evaporator 3.Specifically, the first acting working medium is in the case where being heated to relatively low temperature
It can vaporize, but the steam of the first acting working medium is easily dissolved in the second acting working medium under normal temperature or lower temperature pressure.
When the acting working medium of the heating of pressure generator 1 first and the second acting working medium, the first acting working medium vaporizes first, improves pressure hair
Pressure in raw device 1, so as to promote the second of liquid the acting working medium or most liquid second does work working medium and part the
One acting working medium enters acting device acting.The steam of first, second acting working medium is inhaled by vapor absorption working medium in evaporator
Receive, so as to reduce pressure in evaporator 3.
In addition, when being not provided with thermal source at higher temperature in pressure generator 11, regenerative apparatus is set.By taking working medium R134A as an example,
R134A evaporation latent heat is 216kj/kg, and liquid R134a specific heat capacity is 1.51kj/kg.If gaseous state 134a is condensed into liquid
State, the fluid temperature of homogenous quantities can be made to raise about 143 degree.When high temperature and high pressure steam working medium caused by evaporator 13 is sent out into pressure
During raw device 11, the temperature of the liquid working substance in pressure generator 11 can be highly improved, i.e. can utilize R134a acting works
The temperature of the latent heat of vaporization lifting liquid working substance of matter.But high temperature and high pressure steam temperature and ring after vapour compression unit compresses
The temperature difference of the low-temperature heat source in border is much smaller than 143 degree, this also means that, part acting working substance steam can not be condensed into liquid, institute
To need the condensation heat of the incondensible acting working medium in this part of regenerative apparatus temporary absorption and temporarily store.
When the device 12 that need not do work does work, the liquid working substance that acting device 12 flows out is no longer pass through evaporator 13 and straight
Tap into pressure generator 11, now, because acting working medium can only cool to normal temperature, do without evaporator 13, liquid working substance
Pressure differential between the working medium entrances and sender property outlet of work(device 12 is smaller.By such circulation, acting can be utilized as far as possible
Waste heat in system, it can not be done work again until the temperature of liquid working substance is reduced to, so as to which waste heat is converted into electric energy or other energy
Amount storage.Or the liquid working substance that acting device 12 flows out passes through evaporator 13, but the working substance steam in evaporator is not done and located
Reason, keeps the vapour pressure constant, and the liquid working substance for so completing acting passes through evaporator 13, but without steaming in evaporator 13
Hair process is directly entered pressure generator.
Embodiment 2
As shown in figure 3, the working medium circulation working system that embodiment 2 provides includes pressure generator 11, acting device 12, steamed
Send out device 13, vapour compression unit 14, the heat exchanger 16 of First Heat Exchanger 15 and second, also, pressure generator 11, First Heat Exchanger
15th, acting device 12, the second heat exchanger 16, evaporator 13 are connected from beginning to end successively with vapour compression unit 14 by pipeline, i.e. pressure
The sender property outlet of forcer 11 connects with the working medium entrances of First Heat Exchanger 15, the sender property outlet of First Heat Exchanger 15 and acting
The working medium entrances connection of device 12, the sender property outlet of acting device 12 connect with the working medium entrances of the second heat exchanger 16, the second heat exchange
The sender property outlet of device 16 connects with the working medium entrances of evaporator 13, the sender property outlet of evaporator 13 and the working medium of vapour compression unit 14
Entrance connects, and the sender property outlet of vapour compression unit 14 connects with the working medium entrances of pressure generator 11, so that acting working medium
In pressure generator 11, First Heat Exchanger 15, acting device 12, the second heat exchanger 16, evaporator 13 and vapour compression unit 14
Internal circulation flow.
When enter acting device 12 acting working medium temperature it is higher when, i.e., pressure generator 11 output liquid refrigerant temperature
When degree is higher, the pressure with the progress liquid working substance of acting can usually be less than saturated vapour pressure, liquid corresponding to self-temperature
Working medium will produce steam.If liquid working substance produces steam in acting device 12, it may appear that phenomena such as cavitation erosion, infringement acting
Device 12, reduce the service life of acting device 12.First Heat Exchanger 15 can be lowered into liquid working substance in acting device 12
Temperature, liquid working substance is not produced steam in acting device 12, while pressure generator 11 and acting device 12 can be increased
Sender property outlet between pressure differential, acting device is obtained bigger driving force.First Heat Exchanger is preferably exchanged heat using two-stage,
First order heat exchange is that high-temp liquid working medium is cooled into environment temperature；Second level heat exchange is to make liquid working substance by environment by cold
Temperature is reduced to lower temperature.The cold of First Heat Exchanger 15 is preferred from evaporator 13, i.e. using caused by evaporator 13
Cryogenic liquid working is lowered into the temperature of the liquid working substance of acting device 12, can so be lowered into acting device 12
The temperature of liquid working substance simultaneously, improves the temperature for entering liquid working substance in pressure generator 11.That is, the present embodiment is by work
Matter circular work system is arranged to：The cryogenic liquid working that evaporator 13 exports is transmitted to First Heat Exchanger by pipeline first
15, then cryogenic liquid working is transmitted to the liquid for pressure generator 11, so both reducing input acting device 12 by pipeline
The temperature of body working medium, damage of the liquid working substance to the device 12 that does work is reduced, has recycled heat again, raising enters pressure
The liquid working substance temperature of device 11, energy consumption is reduced, save the energy.
Because the temperature of the liquid working substance exported from acting device 12 is relatively low, therefore, the second heat exchanger 16 is set
Between acting device 12 and evaporator 13, available for the temperature improved into liquid working substance in evaporator 13.Second heat exchanger
16 heat can come from low-temperature heat source, and low-temperature heat source referred herein refers to air, rivers,lakes and seas, absorbs in these low-temperature heat sources
Heat；Or utilize the heat in high temperature and high pressure steam working medium caused by evaporator 13.
As a variant embodiment of the present embodiment, working medium circulation working system also includes equipment for steam treatment, that is, steamed
Vapour processing unit replaces vapour compression unit, and vapor absorption working medium is provided with evaporator 13, and vapor absorption working medium absorbs acting
The steam of working medium, with the pressure of steam in the evaporator 13 of reduction, it is absorbed acting working medium with vapor absorption working medium together with
Equipment for steam treatment is transported to, acting working medium is separated with vapor absorption working medium, acting working medium is returned with liquid or stream mode
Return to pressure generator 11.
In the variant embodiment, the steam treatment working medium of steam working medium is not intended to the working medium of acting, so being not involved in
Acting, it is used only to processing acting working medium.For example, vapor absorption working medium uses lithium bromide concentrated solution, acting working medium uses water.Bromine
Change the ability that lithium concentrated solution has very strong absorption vapor.When the lithium bromide concentrated solution in vapor contact evaporator 13,
Vapor in evaporator 13 enters lithium bromide concentrated solution, causes water vapour pressure reduction in evaporator 13 to make water continue to evaporate；
Lithium bromide concentrated solution becomes outflow evaporator 13 after weak solution after absorbing vapor.Heating lithium bromide weak solution can evaporate the water
Become vapor, and obtain lithium bromide concentrated solution again；Vapor is sent to again in a manner of steam or high-temperature condensation water again
Pressure generator 11.
The other structures of working medium circulation working system, connected mode and the effect that embodiment 2 provides are same as Example 1,
It will not be repeated here.
Embodiment 3
As shown in figure 4, embodiment 3 provide working medium circulation working system include four pressure generator 11a, 11b, 11c,
11d, acting device 12, evaporator 13, vapour compression unit 14, the heat exchanger 16 of First Heat Exchanger 15 and second, and pressure occurs
Device 11, First Heat Exchanger 15, acting device 12, the second heat exchanger 16, evaporator 13 and vapour compression unit 14 by pipeline according to
Secondary head and the tail connection, i.e. pressure generator 11a, 11b, 11c, 11d are set up in parallel, pressure generator 11a, 11b, 11c, 11d's
Sender property outlet connects with the working medium entrances of First Heat Exchanger 15, the working medium of the sender property outlet and acting device 12 of First Heat Exchanger 15
Entrance connects, and the sender property outlet of acting device 12 connects with the working medium entrances of the second heat exchanger 16, the sender property outlet of the second heat exchanger 16
Connected with the working medium entrances of evaporator 13, the sender property outlet of evaporator 13 connects with the working medium entrances of vapour compression unit 14, steams
The sender property outlet of vapour pressure compression apparatus 14 connects with pressure generator 11a, 11b, 11c, 11d working medium entrances.Acting working medium is being pressed
Forcer 11a, 11b, 11c, 11d, First Heat Exchanger 15, acting device 12, the second heat exchanger 16, evaporator 13 and vapour pressure
The internal circulation flow of compression apparatus 14.
The present embodiment is mainly characterized by being provided with four pressure generators 11a, 11b, 11c, 11d, and four pressure occur
Device 11a, 11b, 11c, 11d circulation receive the steam working medium and liquid working substance of evaporator output, and circulate and acting device 12 is followed
Ring works, i.e., synchronization only has a pressure generator to do work acting device 12.In addition, when pressure generator 11a, 11b,
11c, 11d receive evaporator output less than room temperature liquid working substance when, the liquid working substance absorbs the heat in low-temperature heat source first
Amount.
Specifically, it is assumed that pressure generator 11a, 11b, 11c, 11d original state is：Pressure generator 11a is filled with
The of a relatively high liquid working substance of temperature, heat liquid working substance using heating source and improve its interior steam pressure, pressure generator
Acting working medium in 11b, 11c is the liquid working substance of normal temperature, and the acting working medium in pressure generator 11d is steam working medium.
When being brought into operation using the working system of low-temperature heat source, pressure generator 11a does work to acting device 12, steam
Compression set 14 is by the steam working medium compression in evaporator 13 and force feed is to pressure generator 11b, utilizes the steam of HTHP
Liquid working substance in working medium heated pressure generator 11b, when the liquid working substance temperature in pressure generator 11b reaches steam working medium
, can be by the steam working medium force feed of HTHP to pressure generator 11c, heated pressure generator during the upper limit that can be heated
Liquid working substance in 11c, while the temperature of the liquid working substance in pressure generator 11b is kept constant；It is less than in evaporator 13
The liquid working substance of room temperature is delivered to pressure generator 11d by working medium pump, because the temperature of now liquid working substance is relatively low, can inhale
The heat in low-temperature heat source is received, and makes the temperature of liquid working substance identical with the temperature of low-temperature heat source.When in pressure generator 11a
When liquid working substance is exhausted, start the heating source in pressure generator 11b, pressure generator 11b is started to the device that does work
12 actings, and by the steam working medium force feed that evaporator 13 exports to pressure generator 11c, added using the steam working medium of HTHP
Liquid working substance in hot pressing forcer 11c；Now pressure generator 11d is full of by liquid working substance, and liquid working substance
Environment temperature is reached due to absorbing the heat in environment, when the temperature of the liquid working substance in pressure generator 11c reaches temperature
, can be while the temperature of liquid working substance in pressure generator 11c be maintained during the upper limit, HTHP that evaporator 13 is exported
Vapour pressure deliver to pressure generator 11d, the temperature of liquid working substance in heated pressure generator 11c；Evaporator 13 exports low
Geothermal liquid working medium is sent to pressure generator 11a, and the cryogenic liquid working in pressure generator 11a constantly absorbs the heat in environment
Amount.
Four such iterative cycles of pressure generator 11a, 11b, 11c, 11d, the cryogenic liquid working that evaporator 13 exports
Ceaselessly low-temperature heat source absorbs heat and reaches environment temperature, then the high temperature and high pressure steam exported by evaporator 13 from environment
Working medium is heated to it, and the pressure that steam working medium is finally lifted using heating source is done work, and both efficiently utilizes low-temperature heat source, is reduced
Energy consumption, the heat in the high temperature and high pressure steam working medium of the output of evaporator 13 has been recycled again, has saved the energy.
As a variant embodiment of the present embodiment, include four pressure using the working system of low-temperature heat source and occur
Device 11a, 11b, 11c, 11d, two acting 12, one, device vapour compression units 14 of evaporator 13, one, two acting devices
12 are set up in parallel, and four pressure generators 11a, 11b, 11c, 11d are to two acting circular works of device 12, two acting devices
12 export acting working medium to evaporator 13, or the acting device working medium that will do work is exported to evaporator 13, and another does
Acting working medium is directly output to pressure generator, as far as possible after consumption both vapor compression by work(device without evaporator 13
Condensation heat, reduce the burden of regenerative apparatus.The circulation of remaining step and working medium of doing work is identical with other embodiment, no longer superfluous herein
State.
Embodiment 4
As shown in figure 5, the working system using low-temperature heat source that embodiment 4 provides includes two working medium circulation acting systems
System, for the ease of description, two working medium circulation working systems are referred to as upper level working medium circulation working system and next
Level working medium circulation working system, accordingly, the pressure generator set in upper level working medium circulation working system, acting are filled
Put, evaporator and vapour compression unit are referred to as upper level pressure generator 11a, upper level acting device 12a, upper level evaporation
Device 13a and upper level vapour compression unit 14a；By the pressure generator set in next stage working medium circulation working system, acting
Device, evaporator and vapour compression unit are referred to as next stage pressure generator 11b, next stage acting device 12b, next stage and steamed
Send out device 13b and next stage vapour compression unit 14b.
Embodiment 4 provides as follows using the working system concrete structure of low-temperature heat source：
In upper level working medium circulation working system, upper level pressure generator 11a, upper level acting are filled by pipeline
12a, upper level evaporator 13a is put to connect from beginning to end successively with upper level vapour compression unit 14a；Done work in next stage working medium circulation
In system, next stage pressure generator 11b, next stage are done work device 12b, next stage evaporator 13b and next by pipeline
Level vapour compression unit 14b is connected from beginning to end successively.Upper level working medium circulation working system and next stage working medium circulation working system
Specific connected mode and act on it is same as Example 2, will not be repeated here.Also, by upper level evaporator 13a liquid work
Matter exports to be set with next stage vapour compression unit 14b sender property outlet with heat exchange method, to utilize next stage both vapor compression
The temperature of the heat upper level cryogenic liquid working of the high temperature and high pressure steam working medium of device 14b outputs, while next stage steams
Vapour working medium is condensed.
It is pointed out that although the working system using low-temperature heat source that embodiment 4 provides is provided with two working medium
Circular work system, but the invention is not limited in this.In fact, two can also be set using the working system of low-temperature heat source
The working medium circulation working system of individual any of the above quantity.Specifically, followed using the working system of low-temperature heat source including n level working medium
Ring working system, n level working medium circulation working systems connect step by step, i.e. upper level evaporator 13a and next stage vapour compression unit
14b is set with heat exchange method, wherein, n is the positive integer more than or equal to 2, so as to which the recycle heat in working medium of doing work is sharp
With.Mutually corresponding heating and cooling can be carried out between working medium circulation working system using heat and cold.
Embodiment 5
As shown in fig. 6, the working system using low-temperature heat source that embodiment 5 provides includes a working medium circulation acting system
System and a steam acting device.
The structure of working medium circulation working system is identical with the structure of working medium circulation working system in embodiment 1, and it includes pressure
Forcer 11, acting device 12 and evaporator 13, and pressure generator 11, acting device 12 and evaporator 13 are passed through into pipe
Road connects from beginning to end successively.
For steam acting device using the steam acting device provided in the market, it includes steam working system pressure hair
Raw device 61, steam working system acting device 62 and steam working system working medium pump 63, steam working system pressure generator 61,
Steam working system acting device 62 is connected from beginning to end successively with steam working system working medium pump 63 by pipeline, steam acting device
The sender property outlet of pressure generator 61 connects with the working medium entrances of steam working system acting device 62, the acting of steam working system
The sender property outlet of device 62 connects with the input port of working medium pump 63, and delivery outlet and the steam of steam working system working medium pump 63 do work
The working medium entrances connection of system pressure generator 61, acting working medium is in steam working system pressure generator 61, steam acting system
System acting device 62 and the internal circulation flow of steam working system working medium pump 63, steam working system working medium pump 63 provide acting working medium
The power of circulation.
The sender property outlet of working medium entrances and steam working system the acting device 62 of pressure generator 11 is with heat exchange method
Set, i.e. the low temperature of high-temperature steam working medium and the working medium entrances of pressure generator 11 that steam working system acting device 62 is discharged
Liquid working substance carry out heat exchange, on the one hand, the working medium entrances of pressure generator 11 cryogenic liquid working heating, be advantageous to its
Pressure generator 11 produces high pressure；On the other hand, the high-temperature steam working medium that steam working system acting device 62 is discharged is cooled,
The pressure generator 61 for being transported to steam working system after liquid by working barrel 63 is condensed into, condensation institute liberated heat is sharp
With having saved the energy.
Embodiment 6
As shown in fig. 7, the working system using low-temperature heat source that embodiment 6 provides includes a working medium circulation acting system
System and a steam acting device.
Specifically, using low-temperature heat source working system include pressure generator 11, acting device 12, evaporator 13,
Steam working system pressure generator 61 and steam working system acting device 62, moreover, steam working system pressure generator
61st, steam working system acting device 62, pressure generator 11, acting device 12 and evaporator 13 are connected from beginning to end successively by pipeline
Connect, i.e. the working medium entrances of the sender property outlet of steam working system pressure generator 61 and steam working system acting device 62 connect
Logical, the sender property outlet of steam working system acting device 62 connects with the working medium entrances of pressure generator 11, pressure generator 11
Sender property outlet with do work device 12 working medium entrances connect, do work device 12 sender property outlet and evaporator 13 working medium entrances
Connection, the sender property outlet of evaporator 13 connect with the working medium entrances of steam working system pressure generator 61.Steam working system
The steam working medium that acting device 62 is discharged is directly entered pressure generator 11, as in high temperature heat source heated pressure generator 11
Liquid working substance.
The high-temp liquid working medium being discharged between pressure generator 11 and acting device 62 is returned to steam working system
Pressure generator 61, the heat of high-temp liquid working medium is effectively utilized, reduce the energy resource consumption of steam working system.
Embodiment 7
As shown in figure 8, the working system using low-temperature heat source that embodiment 7 provides includes a working medium circulation acting system
System and a steam acting device.
The structure of working medium circulation working system is identical with the structure of working medium circulation working system in embodiment 2, and it includes pressure
Forcer 11, acting device 12, evaporator 13 and vapour compression unit 14, and by pressure generator 11, acting device 12,
Evaporator 13 is connected from beginning to end successively with vapour compression unit 14 by pipeline.
For steam acting device using the steam acting device provided in the market, it includes steam working system pressure hair
Raw device 61, steam working system acting device 62 and steam working system working medium pump 63, steam working system pressure generator 61,
Steam working system acting device 62 is connected from beginning to end successively with steam working system working medium pump 63 by pipeline, steam acting device
The sender property outlet of pressure generator 61 connects with the working medium entrances of steam working system acting device 62, the acting of steam working system
The sender property outlet of device 62 connects with the input port of working medium pump 63, and delivery outlet and the steam of steam working system working medium pump 63 do work
The working medium entrances connection of system pressure generator 61, so that acting working medium is done in steam working system pressure generator 61, steam
Work(system acting device 62 and the internal circulation flow of steam working system working medium pump 63, steam working system working medium pump 63 provide acting
The power of working medium circulation.
The sender property outlet of evaporator 13 and steam working system acting device 62 is set with heat exchange method, to utilize evaporation
The steam working medium that the cryogenic liquid working cooling steam working system acting device 62 that device 13 exports is discharged, while heating evaporation device
The cryogenic liquid working temperature of 13 outputs.In addition, vapour compression unit 14 is handed over steam working system pressure generator 61 with heat
The mode of changing is set, and the high temperature and high pressure steam working medium exported using vapour compression unit 14 improves steam working system pressure generator
The temperature of acting working medium in 61.
The present embodiment evaporator 13 make use of the waste heat of steam acting device output, reduces acting working medium and is done into steam
The temperature of work(systematic working medium pump 63, reduce the damage of steam working system working medium pump 63.Steam working system pressure hair simultaneously
Raw device 61 make use of the heat of the high temperature and high pressure steam working medium of the output of vapour compression unit 14, be advantageous to improve steam acting device
Mechanical efficiency.
Embodiment 8
As shown in figure 9, the working system using low-temperature heat source that embodiment 8 provides includes a working medium circulation acting system
System and a refrigeration system.
Refrigeration system includes refrigeration system evaporator 71, refrigerant system condenser 72 and refrigeration system compressor 73, and
Refrigeration system evaporator 71, refrigerant system condenser 72 and refrigeration system compressor 73 successively head and the tail are connected, i.e. refrigeration system
The working medium delivery outlet of evaporator 71 connects with the working medium entrances of refrigeration system compressor 73, and the working medium of refrigeration system compressor 73 goes out
Mouth connects with the working medium entrances of refrigerant system condenser 72, the sender property outlet and refrigeration system evaporator of refrigerant system condenser 72
71 working medium input port connection.The heat absorption of refrigeration system evaporator 71 makes refrigerant evaporation, and refrigeration system compressor 73 is by refrigerant force feed
To refrigerant system condenser 72, refrigerant system condenser 72 radiates so that refrigerant cools down.
The structure of working medium circulation working system is identical with the structure of working medium circulation working system in embodiment 2, and it includes pressure
Forcer 11, acting device 12, evaporator 13 and vapour compression unit 14, and by pressure generator 11, acting device 12,
Evaporator 13 is connected from beginning to end successively with vapour compression unit 14 by pipeline.
In addition, refrigeration system evaporator 71 is set with vapour compression unit 14 with heat exchange method.Because refrigeration system is steamed
Hair device 71 in evaporation refrigerant need absorb heat, vapour compression unit 14 export high temperature and high pressure steam working medium in heat can
Heat is provided for refrigeration system evaporator 71, the heat in vapour compression unit 14 is used, advantageously reduces heat damage
Consumption.Moreover, refrigerant system condenser 72 is set with pressure generator 11 with heat exchange method.Refrigerant system condenser 72 in refrigerant
Substantial amounts of heat will be discharged in condensation process, these heats can be utilized by pressure generator 11, for improving pressure
The temperature of liquid working substance in device 11.
In embodiment 1 into embodiment 8, also include energy storage device, energy storage device using the working system of low-temperature heat source
Energy input end with do work device energy output end be connected, for store acting device export energy.When user needs
Electric energy reduce when, can by energy storage device will do work device caused by electrical power storage；Or energy storage device is used to store heat
Amount.
Because the latent heat of vaporization for working medium of doing work is very high, in addition to heat is transmitted to liquid working substance by some vapor condensation, also need
The latent heat of vaporization that working medium first absorbs HTHP acting working medium is condensed, working substance steam is all liquefied.These higher temperatures
Condensation working medium is first stored in energy storage equipment, and when acting requires relatively low, pressure generator is returned directly to without evaporator；Or
Person passes through evaporator, but the steam for working medium of doing work is not processed, and keeps the vapour pressure of the acting working medium in evaporator, this sample liquid
Body working medium just not re-evaporation, whole feed pressure generators.This method can consume the heat of the condensation working medium of energy storage equipment,
But working power can reduce.Heat of the purpose also for this part of reduction of acting device is arranged in parallel in example 4,
Reduce the burden of energy storage equipment.
The working system using low-temperature heat source that above-described embodiment provides, acting working medium can when being evaporated in evaporator
Produce less than room temperature cryogenic liquid working and high-temperature steam working medium, the cryogenic liquid working can in pressure generator or
The heat in low-temperature heat source is absorbed before into pressure generator, its temperature is reached the temperature of low-temperature heat source, can so subtract
The energy consumed during few pressure generator gasifying liquid working medium, and in pressure generator, cryogenic liquid working can utilize
Heat in the high-temperature steam working medium of evaporator output improves its temperature or vaporizes liquid working substance, so as to by recycle heat profit
With.Therefore, the working system not only make use of the low-temperature heat source in such as air, rivers,lakes and seas environment, expand coming for energy
Source range, and the heat in steam working medium caused by evaporator has been recycled, save the energy.
Embodiment 9
As shown in Figure 10, the present embodiment provides a kind of method using low-temperature heat source acting, and this method is based on embodiment 1
The working system provided to embodiment 8, this method comprise the following steps：
Step S1, the liquid working substance in heated pressure generator, vaporizes it and improves the pressure of steam in pressure generator
Power, by liquid working substance force feed to the device that does work；
Step S2, liquid working substance is in acting device by force feed to evaporator after completion acting；
Step S3, liquid working substance is vaporized in evaporator obtains steam working medium, meanwhile, steam working medium is steamed in evaporator
Vapour absorbs working medium and absorbed, and discharges evaporator.
Step S4, steam working medium is separated with vapor absorption working medium, and the steam working medium after separation is returned to pressure hair
Raw device, while vapor absorption working medium is returned to evaporator.
Although above with general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to the scope of protection of present invention.
Claims (10)
- A kind of 1. working system using low-temperature heat source, it is characterised in that the working system bag using low-temperature heat source Working medium circulation working system is included, the working medium circulation working system includes pressure generator, acting device and evaporator, the pressure Forcer, acting device connect for acting working medium circulation flowing from beginning to end successively with evaporator；The evaporator is in vaporization institute Steam working medium is obtained during stating acting working medium and the liquid working substance less than room temperature, the liquid working substance less than room temperature are returning The heat of low-temperature heat source is absorbed before or after returning the pressure generator, the steam working medium is returned in the pressure generator Heat the liquid working substance and lift the steam pressure in the pressure generator, to promote liquid working substance in the acting device Interior acting.
- 2. the working system according to claim 1 using low-temperature heat source, it is characterised in that the working medium circulation acting System also includes vapour compression unit, and the vapour compression unit is connected between the evaporator and the pressure generator, The vapour compression unit sucks steam working medium caused by the evaporator and compressed, to reduce steam in described evaporator Pressure, then by the steam working medium force feed after compression to the pressure generator；Or the working medium circulation working system also includes equipment for steam treatment, and vapor absorption work is provided with the evaporator Matter, the vapor absorption working medium absorb the steam of the acting working medium, to reduce the pressure of steam in described evaporator, inhaled The acting working medium received is transported to the equipment for steam treatment together with described vapor absorption working medium, makes the acting working medium Separated with the vapor absorption working medium, the acting working medium returns to pressure generator with liquid or stream mode.
- 3. the working system according to claim 2 using low-temperature heat source, it is characterised in that described using Low Temperature Thermal The working system in source includes the n levels working medium circulation working system that connects step by step, also, evaporator described in upper level with it is next The level vapour compression unit is set with heat exchange method, wherein, n is the positive integer more than or equal to 2.
- 4. the working system according to claim 2 using low-temperature heat source, it is characterised in that described using Low Temperature Thermal The working system in source also includes steam working system, and the steam working system includes steam working system pressure generator, steamed Vapour working system acting device and steam working system working medium pump, the steam working system pressure generator, steam acting system System acting device and steam working system working medium pump head and the tail are sequentially communicated；Also, the vapour compression unit of the steam working system pressure generator and the working medium circulation working system is handed over heat The mode of changing is set, and the evaporator of steam working system acting device and the working medium circulation working system is with heat exchange side Formula is set；Or the pressure generator of the steam working system acting device and the working medium circulation working system is with heat exchange side Formula is set.
- 5. the working system according to claim 2 using low-temperature heat source, it is characterised in that described using Low Temperature Thermal The working system in source also includes steam working system, and the steam working system includes steam working system pressure generator and steaming Vapour working system acting device, the steam working system pressure generator, steam working system acting device, pressure hair Raw device, the acting device connect from beginning to end successively with the evaporator, and, the sender property outlet of the pressure generator with it is described The working medium entrances connection of the steam working system pressure generator, the sender property outlet of the evaporator and the pressure generator Working medium entrances connection.
- 6. according to the working system using low-temperature heat source described in claim any one of 1-5, it is characterised in that it is described can profit Include the multiple pressure generators being arranged in parallel and multiple acting devices, the multiple institute with the working system of low-temperature heat source State pressure generator and circulate the liquid working substance for receiving evaporator output and the steam working medium successively, it is multiple described to do Work(device is set up in parallel and with this circular work.
- 7. according to the working system using low-temperature heat source described in claim any one of 1-5, it is characterised in that in the pressure Heating source is provided with forcer, to improve the steam pressure in the pressure generator.
- 8. according to the working system using low-temperature heat source described in claim any one of 1-5, it is characterised in that the acting Working medium includes the first acting working medium and the second acting working medium, moreover, the first acting working medium can be mixed fully with the second working medium Close, or the first acting working medium dissolves in the second acting working medium；In the evaporator, the gaseous acting work Matter is absorbed with vapor absorption working medium existing for gaseous state or liquid form, and discharges the evaporator, to reduce the evaporation The steam pressure of acting working medium in device.
- 9. according to the working system using low-temperature heat source described in claim any one of 1-5, it is characterised in that the working medium Circular work system also includes First Heat Exchanger and/or the second heat exchanger, the working medium entrances of the First Heat Exchanger and the pressure The sender property outlet connection of forcer, the sender property outlet of the First Heat Exchanger connect with the working medium entrances of the acting device, The First Heat Exchanger is used for the temperature for being lowered into the acting working medium of the acting device；The work of second heat exchanger Matter entrance connects with the sender property outlet of the acting device, the sender property outlet of second heat exchanger and the working medium of the evaporator Entrance connects, and second heat exchanger is used for the temperature for improving the acting working medium for entering the evaporator.
- A kind of 10. method using low-temperature heat source acting, it is characterised in that it is any one that methods described is based on claim 1-9 Working system described in, this method comprise the following steps：Step S1, the liquid working substance in heated pressure generator, vaporizes it and improves the pressure of steam in the pressure generator Power, by liquid working substance force feed to the device that does work.Step S2, the liquid working substance is in acting device by force feed to evaporator after completion acting.Step S3, the liquid working substance is vaporized in the evaporator obtains steam working medium, meanwhile, the steam working medium is by institute State vapor absorption working medium in evaporator to absorb, and discharge the evaporator.Step S4, the steam working medium is separated with the vapor absorption working medium, and by the steam working medium foldback after separation To the pressure generator, while the vapor absorption working medium is returned to the evaporator.
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