CN102022221A - Organic Rankine cycle diesel engine tail gas and waste heat utilization system using two-stage single-screw expanding machine - Google Patents
Organic Rankine cycle diesel engine tail gas and waste heat utilization system using two-stage single-screw expanding machine Download PDFInfo
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Abstract
The invention relates to an organic Rankine cycle diesel engine tail gas and waste heat utilization system using a two-stage single-screw expanding machine, belonging to the field of energy conservation and emission reduction, and mainly comprising a gas compressor, an engine, a turbomachine, a tube bundle type evaporator, a single-screw expanding machine I, a magnetic powder dynamometer I, a single-screw expanding machine II, a magnetic powder dynamometer II, a plate type condenser, a liquid storage tank, a working medium pump, an intermediate heater, a cooling tower, an adjustable flow pump, a flow divider valve I of an expanding machine outlet, a flow divider valve II of the expanding machine outlet, a flow divider valve III of the expanding machine outlet, an exhaust control valve I, an exhaust control valve II, a turbomachine and compressor coupling shaft, a coupling shaft I, a coupling shaft II and various connecting pipelines. According to the conditions of different rotating speeds and different loads of a diesel engine, by utilizing the invention, the opening and closing of the flow divider valves of the expanding machine outlet and the exhaust control valves are adjusted, waste heat recoveries at different levels are realized and the energy taken away by the tail gas of the diesel engine is furthest recovered and utilized.
Description
Technical field
The present invention relates to two-stage single-screw expander organic Rankine circulation diesel engine vent gas bootstrap system, be mainly used in and recycle the heat that diesel engine for automobile tail gas is taken away, belong to the energy-saving and emission-reduction field.
Background technique
According to thermal equilibrium analysis, the heat that changes effective merit in the diesel engine into only accounts for the 30%-45% of the fuel combustion evolution of heat, and 25%～45% the discharging with tail gas of the total amount of heat of fuel combustion.If adopt some technological means to be used for reclaiming the heat that diesel engine vent gas is taken away, not only can improve the complex energy utilization ratio of diesel engine, and have significant oil-saving effect.
At present, the mode that reclaims the energy that diesel engine vent gas takes away mainly contain exhaust turbine pressuring technology, thermo-electric generation technology, engine exhaust heat heating and refrigeration technology, after connect steam power cycle acting technology etc.But, all there are some defectives at present in these technology.The exhaust turbine pressuring technology major defect is the kinetic energy that can only utilize motor exhaust to have, and its heat energy is not utilized but has lost; Thermo-electric generation technology major defect is the restriction that is subjected to material, can only reclaim the partial heat energy of diesel engine vent gas, and can not reclaim the heat that diesel engine vent gas is taken away fully; The shortcoming of engine exhaust heat heating and refrigeration is that capacity usage ratio is lower; After to connect steam power cycle acting technology major defect be difficult to reclaim low-grade heat-source energy.Back lively steam power cycle acting technology mainly is that promptly the steam power circulation system of being made up of critical pieces such as vaporizer, decompressor, condenser, pumps carries out work by classical Rankine cycle principle.The working medium that classical Rankine cycle is adopted is water, under the normal pressure situation, just having steam when its temperature reaches 100 ℃ occurs, and drop cannot appear in the designing requirement turbo machine of turbo machine, therefore the evaporating temperature of system can guarantee just that at 100 ℃ and when above system is in normal operating condition; In addition, the gasification latent heat of water is very big with respect to organic working medium, water is very big the relative organic working medium of heat of required absorption when saturated liquid state changes saturated gaseous state into, therefore for the requirement of thermal source than higher, cannot absorb the energy of low-grade heat source; And the turbomachinery output power that can see on the market all tens kilowatts in addition more than, be applied in the Rankine cycle as expansion machinery with turbo machine, needed is the thermal source of big flow high temperature, and is difficult to reclaim for the thermal source of small flow low temperature.
Summary of the invention
The objective of the invention is to the narrow limitation that can not reclaim the low-grade heat source energy in the classical Rankine cycle, be used for reclaiming the heat that diesel engine vent gas is taken away and proposed a kind of scheme of two-stage single-screw expander organic Rankine circulation diesel engine vent gas bootstrap system that adopts in order to overcome.Can realize being under the different rotating speeds different load variable working condition condition when diesel engine, under the situation that does not influence the diesel engine proper functioning, the recovery rate of diesel engine vent gas waste heat be can significantly improve, thereby the fuel economy of diesel engine and the complex energy utilization ratio of diesel engine improved.
In order to realize above-mentioned target, the present invention has adopted following measure:
The present invention adopts the working medium of organic substance as Rankine cycle system.This working medium evaporating temperature under normal pressure is generally all lower, and its gasification latent heat is more much lower than water, can after absorbing less heat, just be converted into saturated gaseous state from saturated liquid state, therefore, utilize the Rankine cycle of this working medium can absorb the energy of the low-grade heat source of small flow, low temperature, it is lower to be fit to the diesel engine for automobile delivery temperature, the flow features of smaller.
The present invention adopts the two-stage single-screw expander as organic Rankine circuit expansion motive power machine.This two-stage single-screw expander structure is fit to diesel engine different characteristics of energy that tail gas is taken away under different rotating speeds different load variable working condition condition.Single screw expansion motor is a kind of international blank positive-displacement expansion engine of filling up, and its principle is after pressurized gas or steam enter single-screw expander, by expanding heat energy or pressure can be converted to mechanical energy, and the drive generator generates electricity.This decompressor has good power out-put characteristic and temperature drop characteristic, and its power range has overcome the defective that traditional steam turbine and gas turbine can not be too little in 1kW～1000kW scope; Its expansion ratio can be exported more shaft work in 1～8 scope.Single-screw expander can be used polytype working medium in addition, can be pressurized gas, superheated vapor, saturated vapour, vapour-liquid two-phase or hydrothermal solution, therefore, is particularly suitable for the recovery of various waste gas residual heats.The present invention adopts the two-stage single-screw expander, can satisfy diesel engine different characteristics of heat that tail gas is taken away under different rotating speeds different load variable working condition condition, reclaims the heat that diesel engine vent gas is taken away as much as possible.
To achieve these goals, the present invention has adopted two-stage single-screw expander organic Rankine circulation diesel engine vent gas bootstrap system to reclaim the diesel engine vent gas waste heat, it is characterized in that: comprise gas compressor, motor, turbo machine, the bundled tube vaporizer, single-screw expander I, magnetic power measurer I, single-screw expander II, magnetic power measurer II, plate type condenser, liquid container, working medium pump, intermediate heater, cooling tower, variable capacity pump, decompressor outlet diverter valve I, decompressor outlet diverter valve II, decompressor outlet diverter valve III, gas exhausting valve I, gas exhausting valve II, the turbomachine compressor coupking shaft, coupking shaft I, coupking shaft II and various connecting pipeline; The annexation of each parts of internal system is: gas compressor, motor, turbo machine, bundled tube vaporizer and intermediate heater link to each other successively and constitute the direction of gas flow in diesel engine intake and the vent systems, the bundled tube vaporizer, single-screw expander I, intermediate heater, single-screw expander II, plate type condenser, liquid container links to each other successively with working medium pump and forms the closed-loop path of Rankine cycle, wherein single-screw expander I links to each other by coupking shaft I with magnetic power measurer I and can measure the shaft work of being exported, single-screw expander II links to each other by coupking shaft II with magnetic power measurer II can measure the shaft work of being exported, plate type condenser, cooling tower and variable capacity pump link to each other successively and form closed-loop path formation cooling system; The loop control of whole diesel engine vent gas bootstrap system is regulated by decompressor outlet diverter valve and gas exhausting valve, concrete Placement is: the outlet of single-screw expander I is divided into three pipelines by pipeline, article one, pipeline is connected to plate type condenser by decompressor outlet diverter valve I, the second pipeline is connected to single-screw expander II by decompressor outlet diverter valve II, and the 3rd pipeline is connected to intermediate heater by decompressor outlet diverter valve III; Bundled tube vaporizer tail gas outlet side is divided into two pipelines by three-way pipe, joins with outlet pipe after a pipeline is connected to intermediate heater by gas exhausting valve I, and another pipeline directly links to each other with outlet pipe by gas exhausting valve II; Turbo machine and gas compressor link into an integrated entity by the turbo-machinery compressor coupling shaft in addition.
Description of drawings
Fig. 1 is a two-stage single-screw expander organic Rankine circulation diesel engine vent gas bootstrap system schematic representation;
When Fig. 2 is diesel engine slow-speed of revolution low-load, low temperature circulatory system flow schematic diagram;
Fig. 3 is in the diesel engine in the high rotating speed during high load, middle temperature circulatory system flow schematic diagram;
When Fig. 4 is the big load of the high rotating speed of diesel engine, high temperature circulation system flow schematic representation;
Among the figure: the 1-gas compressor; The 2-motor; The 3-turbo machine; 4-bundled tube vaporizer; 5-single-screw expander I; 6-magnetic power measurer I; 7-single-screw expander II; 8-magnetic power measurer II; The 9-plate type condenser; The 10-liquid container; The 11-working medium pump; The 12-intermediate heater; The 13-cooling tower; The 14-variable capacity pump; 15-decompressor outlet diverter valve I; 16-decompressor outlet diverter valve II; 17-decompressor outlet diverter valve III; 18-gas exhausting valve I; 19-gas exhausting valve II; 20-turbo-machinery compressor coupking shaft; 21-coupking shaft I; 22-coupking shaft II.
Embodiment
The characteristics that the heat of walking based on the diesel engine different rotating speeds different load variable working condition condition lower tail band of gas changes thereupon, the present invention mainly reclaims the heat that diesel engine vent gas is taken away by the three cover circulatory systems: low temperature circulation recovery waste heat system; In warm circulation recovery waste heat system; High temperature circulation recovery waste heat system.
The two-stage single-screw expander organic Rankine circulation diesel engine vent gas bootstrap system that the present invention is used mainly comprises gas compressor 1, motor 2, turbo machine 3, bundled tube vaporizer 4, single-screw expander I 5, magnetic power measurer I 6, single-screw expander II 7, magnetic power measurer II 8, plate type condenser 9, liquid container 10, working medium pump 11, intermediate heater 12, cooling tower 13, variable capacity pump 14, decompressor outlet diverter valve I 15, decompressor outlet diverter valve II 16, decompressor outlet diverter valve III17, gas exhausting valve I 18, gas exhausting valve II 19, turbomachine compressor coupking shaft 20, coupking shaft I 21, coupking shaft II22 and various connecting pipeline.The annexation of each parts of internal system is as follows: gas compressor 1, motor 2, turbo machine 3, bundled tube vaporizer 4 and intermediate heater 12 link to each other successively and constitute the direction of gas flow in diesel engine intake and the vent systems.Bundled tube vaporizer 4, single-screw expander I 5, intermediate heater 12, single-screw expander II 7, plate type condenser 9, liquid container 10 link to each other successively with working medium pump 11 and form the closed-loop path of Rankine cycle.Wherein single-screw expander I 5 and magnetic power measurer I 6 link to each other by coupking shaft I 21 and can measure the shaft work of being exported, single-screw expander II 7 and magnetic power measurer II 8 link to each other by coupking shaft II 22 can measure the shaft work of being exported, and plate type condenser 9, cooling tower 13 and variable capacity pump 14 link to each other successively and constitute the closed-loop path.The loop control of whole system is regulated by decompressor outlet diverter valve and gas exhausting valve, concrete Placement is as follows: the outlet of single-screw expander I 5 is divided into three pipelines by pipeline, article one, pipeline is connected to plate type condenser 9 by decompressor outlet diverter valve I 15, the second pipeline is connected to 7, the three pipelines of single-screw expander II by decompressor outlet diverter valve II 16 and is connected to intermediate heater 12 by decompressor outlet diverter valve III17; Bundled tube vaporizer 4 tail gas outlet sides are divided into two pipelines by three-way pipe, and a pipeline is connected to intermediate heater 12 backs by gas exhausting valve I 18 and joins with outlet pipe, and another pipeline directly links to each other with outlet pipe by gas exhausting valve II 19.Turbo machine 3 links into an integrated entity by turbo-machinery compressor coupling shaft 20 with gas compressor 1 in addition.(as shown in Figure 1)
Be that accompanying drawings is worked as diesel engine and is under the different working conditions concrete working procedure of the present invention or runnability below.
When diesel engine is under the slow-speed of revolution running on the lower load, system start-up low temperature exhaust heat recovery of circulatory system.
At first decompressor is exported diverter valve II 16, decompressor outlet diverter valve III17, gas exhausting valve I 18 and close, decompressor is exported diverter valve I 15 and gas exhausting valve II 19 opens by automatical control system.The low temperature circulatory system mainly is made up of bundled tube vaporizer 4, single-screw expander I 5, plate type condenser 9, liquid container 10, working medium pump 11, wherein single-screw expander I 5 and magnetic power measurer I 6 link to each other by coupking shaft I 21 and can measure the shaft work of being exported, and plate type condenser 9, cooling tower 13 and variable capacity pump 14 link to each other successively and form the closed-loop path and constitute cooling system.Concrete working condition is as follows: air enters in the motor 2 after being compressed through gas compressor 1, in cylinder, discharge by motor 2 through burning expansion acting back, thereby waste gas enters in the turbo machine 3 and to promote turbo machine 3 rotations and drive gas compressors 1 work, and the high-temperature gas that comes out from turbo machine 3 is again through entering in the atmosphere by outlet pipe after the release heat the bundled tube vaporizer 4.Organic substance absorbs the heat that diesel engine vent gas discharged and is converted into gaseous state in bundled tube vaporizer 4, the gas that produces promotes single-screw expander I 5 expansion actings, this process can be considered the adiabatic expansion process of working medium, form weary gas after the gas decrease temperature and pressure, weary gas enters that the level pressure heat release is cooled to liquid in the plate type condenser 9, after liquid enters in the liquid container 10, carry out the circulation of a new round again in the bundled tube vaporizer 4 by working medium pump 11 pumps.(as shown in Figure 2)
In diesel engine is under the high rotating speed middle and high load working condition, the warm heat recovery circulatory system in the system start-up.
At first decompressor is exported diverter valve I 15, decompressor outlet diverter valve III17, gas exhausting valve I18 and close, decompressor is exported diverter valve II 16 and gas exhausting valve II 19 opens by automatical control system.In the warm circulatory system mainly form by bundled tube vaporizer 4, single-screw expander I 5, single-screw expander II 7, plate type condenser 9, liquid container 10, working medium pump 11, wherein single-screw expander I 5 and magnetic power measurer I 6 link to each other by coupking shaft I 21 and can measure the shaft work of being exported, single-screw expander II 7 and magnetic power measurer II 8 link to each other by coupking shaft II22 can measure the shaft work of being exported, and plate type condenser 9, cooling tower 13 and variable capacity pump 14 link to each other successively and form the closed-loop path and constitute cooling system.Concrete working condition is as follows: air enters in the motor 2 after being compressed through gas compressor 1, in cylinder, discharge by motor 2 through burning expansion acting back, thereby waste gas enters in the turbo machine 3 and to promote turbo machine 3 rotations and drive gas compressors 1 work, and the high-temperature gas that comes out from turbo machine 3 is again through entering in the atmosphere by outlet pipe after the release heat the bundled tube vaporizer 4.Organic substance absorbs the heat that diesel engine vent gas discharged and is converted into gaseous state in bundled tube vaporizer 4, gas promotes single-screw expander I 5 expansion actings, decrease temperature and pressure forms weary gas, the weary gas of this moment also has very high energy, can continue to reclaim, therefore weary gas also need insert and continue the acting of expanding among the single-screw expander II 7, the further decrease temperature and pressure of gas is laggard goes into that the level pressure heat release is cooled to liquid in the board-like condenser 9, after liquid enters in the liquid container 10, carry out the circulation of a new round again in the bundled tube vaporizer 4 by working medium pump 11 pumps.(as shown in Figure 3)
When diesel engine is under the high rotating speed high load operating mode system start-up high-temperature residual heat recovery of circulatory system.
At first decompressor is exported diverter valve I 15, decompressor outlet diverter valve II 16, gas exhausting valve II 19 and close, decompressor is exported diverter valve III17 and gas exhausting valve I 18 opens by automatical control system.The high temperature circulation system mainly is made up of bundled tube vaporizer 4, single-screw expander I 5, intermediate heater 12, single-screw expander II 7, plate type condenser 9, liquid container 10, working medium pump 11, wherein single-screw expander I5 links to each other by coupking shaft I 21 with magnetic power measurer I6 and can measure the shaft work of being exported, single-screw expander II 7 and magnetic power measurer II 8 link to each other by coupking shaft II 22 can measure the shaft work of being exported, and plate type condenser 9, cooling tower 13 and variable capacity pump 14 link to each other successively and form the closed-loop path and constitute cooling system.Concrete working condition is as follows: air enters in the motor 2 after being compressed through gas compressor 1, in cylinder, discharge by motor 2 through burning expansion acting back, thereby waste gas enters and promotes 1 work of turbo machine 3 rotation drive gas compressors in the turbo machine 3, the high-temperature gas that comes out from turbo machine 3 passes through the bundled tube vaporizer 4 after the release heat again, enters intermediate heater 12 and continues directly to enter in the atmosphere by outlet pipe after the release heat.This is because when diesel engine was in high rotating speed high load working condition, the energy of tail gas was not reclaimed in bundled tube vaporizer 4 fully, connects intermediate heater 12 in its back and can reclaim tail gas energy more.Organic substance absorbs the heat that diesel engine vent gas discharged and is converted into gaseous state in bundled tube vaporizer 4, the gas that produces promotes single-screw expander I 5 expansion actings, the gas decrease temperature and pressure forms weary gas, weary gas further absorbs the heat that diesel engine vent gas discharged in intermediate heater 12, temperature rising enthalpy increases, the weary gas of high temperature enters and continues the acting of expanding among the single-screw expander II 7, the further decrease temperature and pressure of gas is laggard goes into that the level pressure heat release is cooled to liquid in the board-like condenser 9, after liquid enters in the liquid container 10, carry out the circulation of a new round again in the bundled tube vaporizer 4 by working medium pump 11 pumps.(as shown in Figure 4).
Claims (2)
1. two-stage single-screw expander organic Rankine circulation diesel engine vent gas bootstrap system is characterized in that: comprise gas compressor (1), motor (2), turbo machine (3), bundled tube vaporizer (4), single-screw expander I (5), magnetic power measurer I (6), single-screw expander II (7), magnetic power measurer II (8), plate type condenser (9), liquid container (10), working medium pump (11), intermediate heater (12), cooling tower (13), variable capacity pump (14), decompressor outlet diverter valve I (15), decompressor outlet diverter valve II (16), decompressor outlet diverter valve III (17), gas exhausting valve I (18), gas exhausting valve II (19), turbomachine compressor coupking shaft (20), coupking shaft I (21), coupking shaft II (22) and various connecting pipeline; The annexation of each parts of internal system is: gas compressor (1), motor (2), turbo machine (3), bundled tube vaporizer (4) and intermediate heater (12) link to each other successively and constitute the direction of gas flow in diesel engine intake and the vent systems, bundled tube vaporizer (4), single-screw expander I (5), intermediate heater (12), single-screw expander II (7), plate type condenser (9), liquid container (10) links to each other successively with working medium pump (11) and forms the closed-loop path of Rankine cycle, wherein single-screw expander I (5) links to each other by coupking shaft I (21) with magnetic power measurer I (6) and can measure the shaft work of being exported, single-screw expander II (7) links to each other by coupking shaft II (22) with magnetic power measurer II (8) can measure the shaft work of being exported, plate type condenser (9), cooling tower (13) and variable capacity pump (14) link to each other successively and form closed-loop path formation cooling system; The loop control of whole diesel engine vent gas bootstrap system is regulated by decompressor outlet diverter valve and gas exhausting valve, concrete Placement is: the outlet of single-screw expander I (5) is divided into three pipelines by pipeline, article one, pipeline is connected to plate type condenser (9) by decompressor outlet diverter valve I (15), the second pipeline is connected to single-screw expander II (7) by decompressor outlet diverter valve II (16), and the 3rd pipeline is connected to intermediate heater (12) by decompressor outlet diverter valve III (17); Bundled tube vaporizer (4) tail gas outlet side is divided into two pipelines by three-way pipe, article one, pipeline joins with outlet pipe after being connected to intermediate heater (12) by gas exhausting valve I (18), and another pipeline directly links to each other with outlet pipe by gas exhausting valve II (19); Turbo machine (3) links into an integrated entity by turbo-machinery compressor coupling shaft (20) with gas compressor (1) in addition.
2. the working procedure of two-stage single-screw expander organic Rankine circulation diesel engine vent gas bootstrap system as claimed in claim 1 is characterized in that:
1) is under the slow-speed of revolution running on the lower load system start-up low temperature exhaust heat recovery of circulatory system when diesel engine
At first decompressor is exported the outlet of diverter valve II (16), decompressor diverter valve III (17), gas exhausting valve I (18) and close, decompressor is exported diverter valve I (15) and gas exhausting valve II (19) opens by automatical control system; The low temperature circulatory system is mainly by bundled tube vaporizer (4), single-screw expander I (5), plate type condenser (9), liquid container (10), working medium pump (11) is formed, wherein single-screw expander I (5) links to each other by coupking shaft I (21) with magnetic power measurer I (6) and can measure the shaft work of being exported, plate type condenser (9), cooling tower (13) and variable capacity pump (14) link to each other successively and form closed-loop path formation cooling system, concrete working procedure is: air enters in the motor (2) after being compressed through gas compressor (1), in cylinder, discharge by motor (2) through burning expansion acting back, waste gas enters and promotes turbo machine (3) in the turbo machine (3) thereby rotation drive gas compressor (1) work, the high-temperature gas that comes out from turbo machine (3) passes through the bundled tube vaporizer (4) again and enters in the atmosphere by outlet pipe after the release heat, organic substance absorbs the heat that diesel engine vent gas discharged and is converted into gaseous state in bundled tube vaporizer (4), the gas that produces promotes single-screw expander I (5) expansion acting, this process can be considered the adiabatic expansion process of working medium, form weary gas after the gas decrease temperature and pressure, weary gas enters the middle level pressure heat release of plate type condenser (9) and is cooled to liquid, after liquid enters in the liquid container (10), carry out the circulation of a new round again in the bundled tube vaporizer (4) by working medium pump (11) pump;
2) in diesel engine is under the high rotating speed middle and high load working condition, the warm heat recovery circulatory system in the system start-up
At first decompressor is exported the outlet of diverter valve I (15), decompressor diverter valve III (17), gas exhausting valve I (18) and close, decompressor is exported diverter valve II (16) and gas exhausting valve II (19) opens by automatical control system; In the warm circulatory system mainly by bundled tube vaporizer (4), single-screw expander I (5), single-screw expander II (7), plate type condenser (9), liquid container (10), working medium pump (11) is formed, wherein single-screw expander I (5) links to each other by coupking shaft I (21) with magnetic power measurer I (6) and can measure the shaft work of being exported, single-screw expander II (7) links to each other by coupking shaft II (22) with magnetic power measurer II (8) can measure the shaft work of being exported, plate type condenser (9), cooling tower (13) and variable capacity pump (14) link to each other successively and form closed-loop path formation cooling system, concrete working procedure is: air enters in the motor (2) after being compressed through gas compressor (1), in cylinder, discharge by motor (2) through burning expansion acting back, waste gas enters and promotes turbo machine (3) in the turbo machine (3) thereby rotation drive gas compressor (1) work, the high-temperature gas that comes out from turbo machine (3) passes through the bundled tube vaporizer (4) again and enters in the atmosphere by outlet pipe after the release heat, organic substance absorbs the heat that diesel engine vent gas discharged and is converted into gaseous state in bundled tube vaporizer (4), gas promotes single-screw expander I (5) expansion acting, decrease temperature and pressure forms weary gas, the weary gas of this moment also has very high energy, can continue to reclaim, therefore weary gas also need insert and continue the acting of expanding among the single-screw expander II (7), the further decrease temperature and pressure of gas is laggard goes into that the level pressure heat release is cooled to liquid in the board-like condenser (9), after liquid enters in the liquid container (10), carry out the circulation of a new round again in the bundled tube vaporizer (4) by working medium pump (11) pump;
3) be under the high rotating speed high load operating mode system start-up high-temperature residual heat recovery of circulatory system when diesel engine
At first decompressor is exported the outlet of diverter valve I (15), decompressor diverter valve II (16), gas exhausting valve II (19) and close, decompressor is exported diverter valve III (17) and gas exhausting valve I (18) opens by automatical control system; The high temperature circulation system is mainly by bundled tube vaporizer (4), single-screw expander I (5), intermediate heater (12), single-screw expander II (7), plate type condenser (9), liquid container (10), working medium pump (11) is formed, wherein single-screw expander I (5) links to each other by coupking shaft I (21) with magnetic power measurer I (6) and can measure the shaft work of being exported, single-screw expander II (7) links to each other by coupking shaft II (22) with magnetic power measurer II (8) can measure the shaft work of being exported, plate type condenser (9), cooling tower (13) and variable capacity pump (14) link to each other successively and form closed-loop path formation cooling system, concrete working procedure is: air enters in the motor (2) after being compressed through gas compressor (1), in cylinder, discharge by motor (2) through burning expansion acting back, waste gas enters and promotes turbo machine (3) in the turbo machine (3) thereby rotation drive gas compressor (1) work, the high-temperature gas that comes out from turbo machine (3) passes through the bundled tube vaporizer (4) after the release heat again, entering intermediate heater (12) continues directly to enter in the atmosphere by outlet pipe after the release heat, this is because when diesel engine is in high rotating speed high load working condition, the energy of tail gas is not reclaimed in bundled tube vaporizer (4) fully, connects intermediate heater (12) in its back and can reclaim tail gas energy more; Organic substance absorbs the heat that diesel engine vent gas discharged and is converted into gaseous state in bundled tube vaporizer (4), the gas that produces promotes single-screw expander I (5) expansion acting, the gas decrease temperature and pressure forms weary gas, weary gas further absorbs the heat that diesel engine vent gas discharged in intermediate heater (12), temperature rising enthalpy increases, the weary gas of high temperature enters and continues the acting of expanding among the single-screw expander II (7), the further decrease temperature and pressure of gas is laggard goes into that the level pressure heat release is cooled to liquid in the board-like condenser (9), after liquid enters in the liquid container (10), carry out the circulation of a new round again in the bundled tube vaporizer (4) by working medium pump (11) pump.
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| CN102410054A (en) * | 2011-10-19 | 2012-04-11 | 北京工业大学 | Engine exhaust gas waste heat recovery and control system and method based on organic rankine cycle |
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| CN105715406B (en) * | 2014-12-04 | 2018-07-17 | 天纳克（苏州）排放系统有限公司 | Rankine cycle system and its control method |
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| CN106499453A (en) * | 2016-10-28 | 2017-03-15 | 哈尔滨工程大学 | A kind of marine low speed diesel residual heat comprehensive recovery system control method based on rotating speed |
| CN107060923A (en) * | 2017-03-07 | 2017-08-18 | 吉林大学 | Space backheat organic Rankine bottoming cycle complementary energy recovery system and control strategy |
| CN108374714A (en) * | 2018-01-08 | 2018-08-07 | 三峡大学 | A kind of Organic Rankine Cycle plenum internal-combustion engine system and method |
| CN108167038A (en) * | 2018-01-18 | 2018-06-15 | 北京工业大学 | Organic Rankine Cycle-Trans-critical cycle CO2Heat pump engine exhaust heat recycles association system |
| CN108167038B (en) * | 2018-01-18 | 2024-04-16 | 北京工业大学 | ORC-transcritical CO2 heat pump engine exhaust waste heat recovery combined system |
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| CN111535889A (en) * | 2020-05-07 | 2020-08-14 | 江苏科瑞德智控自动化科技有限公司 | Low-quality waste heat efficient utilization system |
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