CN102022221B - 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 tail gas waste heat and utilize system, be mainly used in recycling the heat that the derv fuel 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 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 there is 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 defects 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 subject to material, can only reclaim the partial heat energy of diesel engine vent gas, and can not reclaim fully the heat that diesel engine vent gas is taken away; 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.Rear lively steam power cycle acting technology is mainly that the steam power cycle system be comprised of critical pieces such as vaporizer, decompressor, condenser, pumps is carried out work by classical Rankine cycle principle.The working medium that classical Rankine cycle adopts is water, in 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 is at 100 ℃ and when above, and the system that just can guarantee is in normal operating condition; In addition, the gasification latent heat of water is very large with respect to organic working medium, water is very large the relative organic working medium of heat of required absorption when saturated liquid state changes saturated gaseous state into, therefore higher for the requirement of thermal source, cannot absorb the energy of low-grade heat source; And the turbomachinery output power that can see on the market all tens kilowatts even more than, with turbo machine, as expansion machinery, be applied in Rankine cycle, needed is the thermal source of large flow high temperature, and is difficult to be reclaimed for the thermal source of small flow low temperature.
Summary of the invention
To the object of the invention is to the narrow limitation that in order overcoming, can not reclaim the low-grade heat source energy in classical Rankine cycle, and proposed a kind of two-stage single-screw expander organic Rankine circulation diesel tail gas waste heat that adopts, to utilize the scheme of system to be used for reclaiming the heat that diesel engine vent gas is taken away.Can realize when diesel engine under different rotating speeds different load variable working condition condition, in the situation that do not affect the diesel engine normal operation, the recovery rate of diesel tail 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 measures:
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 from saturated liquid state, be converted into saturated gaseous 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, be applicable to the diesel engine for automobile delivery temperature lower, the characteristics that flow is less.
The present invention adopts the expansion motive power machine of two-stage single-screw expander as the organic Rankine circulation.This two-stage single-screw expander structure is applicable 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 energy is converted to mechanical energy, and the drive generator is generated electricity.This decompressor has good power out-put characteristic and temperature drop characteristic, and its power range, in 1kW～1000kW scope, has overcome the defect that traditional steam turbine and gas turbine can not be too little; Its expansion ratio, in 1～8 scope, can be exported more shaft work.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 meet diesel engine different characteristics of heat that tail gas is taken away under different rotating speeds different load variable working condition condition, reclaims as much as possible the heat that diesel engine vent gas is taken away.
To achieve these goals, the present invention has adopted two-stage single-screw expander organic Rankine circulation diesel tail gas waste heat to utilize the system recoveries diesel tail 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 are connected successively and form the direction of gas flow in diesel engine intake and vent systems, the bundled tube vaporizer, single-screw expander I, intermediate heater, single-screw expander II, plate type condenser, liquid container and working medium pump are connected to form the closed-loop path of Rankine cycle successively, wherein single-screw expander I is connected and can measures exported shaft work by coupking shaft I with magnetic power measurer I, single-screw expander II is connected and can measures exported shaft work by coupking shaft II with magnetic power measurer II, plate type condenser, cooling tower and variable capacity pump are connected to form successively closed-loop path and form cooling system, whole diesel tail gas waste heat utilizes the loop control of system to export diverter valve by decompressor and gas exhausting valve is regulated, concrete Placement is: the outlet of single-screw expander I is divided into three pipelines by pipeline, article one, pipeline exports diverter valve I by decompressor and is connected to plate type condenser, the second pipeline exports diverter valve II by decompressor and is connected to single-screw expander II, and the 3rd pipeline exports diverter valve III by decompressor and be connected to intermediate heater, bundled tube vaporizer tail gas outlet side is divided into two pipelines by three-way pipe, after a pipeline is connected to intermediate heater by gas exhausting valve I, with outlet pipe, joins, and another pipeline directly is connected 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.
The accompanying drawing explanation
Fig. 1 is that two-stage single-screw expander organic Rankine circulation diesel tail gas waste heat utilizes system schematic;
When Fig. 2 is diesel engine slow-speed of revolution low-load, low-temperature circulating system flow schematic diagram;
Fig. 3 is in diesel engine in high rotating speed during high load, middle temperature circulatory system flow schematic diagram;
When Fig. 4 is the large load of the high rotating speed of diesel engine, high temperature circulation system flow schematic diagram;
In 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 by the three cover circulatory systems heat that diesel engine vent gas is taken away: low-temperature circulating recovery waste heat system; Residual heat system is reclaimed in middle temperature circulation; High temperature circulation recovery waste heat system.
The present invention's two-stage single-screw expander organic Rankine circulation diesel tail gas waste heat used utilizes system, mainly 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 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 are connected successively and form the direction of gas flow in diesel engine intake and 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 and working medium pump 11 are connected to form the closed-loop path of Rankine cycle successively.Wherein single-screw expander I 5 is connected and can measures exported shaft work by coupking shaft I 21 with magnetic power measurer I 6, single-screw expander II 7 is connected and can measures exported shaft work by coupking shaft II 22 with magnetic power measurer II 8, and plate type condenser 9, cooling tower 13 and variable capacity pump 14 are connected successively and form closed-loop path.The loop control of whole system exports diverter valve by decompressor and gas exhausting valve is regulated, concrete Placement is as follows: the outlet of single-screw expander I 5 is divided into three pipelines by pipeline, article one, pipeline exports diverter valve I 15 by decompressor and is connected to plate type condenser 9, the second pipeline exports diverter valve II 16 by decompressor and is connected to 7, the three pipelines of single-screw expander II and exports diverter valve III17 by decompressor and be connected to intermediate heater 12; Bundled tube vaporizer 4 tail gas outlet sides are divided into two pipelines by three-way pipe, and pipeline joins with outlet pipe after being connected to intermediate heater 12 by gas exhausting valve I 18, and another pipeline passes through gas exhausting valve II 19 and directly is connected with outlet pipe.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)
Below that accompanying drawings is worked as diesel engine under different working conditions, specific works process of the present invention or runnability.
When diesel engine, under slow-speed of revolution running on the lower load, system starts the low temperature exhaust heat recovery of circulatory system.
At first by automatical control system, decompressor is exported to diverter valve II 16, decompressor outlet diverter valve III17, gas exhausting valve I 18 and close, decompressor is exported to diverter valve I 15 and gas exhausting valve II 19 opens.The low-temperature circulating system mainly is comprised 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 is connected and can measures exported shaft work by coupking shaft I 21 with magnetic power measurer I 6, and plate type condenser 9, cooling tower 13 and variable capacity pump 14 are connected to form successively closed-loop path and form cooling system.The specific works situation is as follows: air enters in motor 2 after gas compressor 1 is compressed, in cylinder, after the burning expansion acting, by motor 2, discharged, thereby waste gas enters in turbo machine 3 and to promote turbo machine 3 rotations and drive gas compressors 1 work, from turbo machine 3, high-temperature gas out is again through entering in atmosphere by outlet pipe after release heat bundled tube vaporizer 4.Organic substance absorbs the heat that diesel engine vent gas discharges and is converted into gaseous state in bundled tube vaporizer 4, the gas push single-screw expander I 5 produced expands and does work, this process can be considered the adiabatic expansion of working medium, form weary gas after the gas decrease temperature and pressure, weary gas enters level pressure heat release in plate type condenser 9 and is cooled to liquid, after liquid enters in liquid container 10, then by working medium pump 11 pumps to the circulation of carrying out a new round in bundled tube vaporizer 4.(as shown in Figure 2)
When diesel engine under middle high rotating speed middle and high load working condition, the warm heat recovery circulatory system during system starts.
At first by automatical control system, decompressor is exported to diverter valve I 15, decompressor outlet diverter valve III17, gas exhausting valve I18 and close, decompressor is exported to diverter valve II 16 and gas exhausting valve II 19 opens.The middle temperature circulatory system mainly is comprised of 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 is connected and can measures exported shaft work by coupking shaft I 21 with magnetic power measurer I 6, single-screw expander II 7 is connected and can measures exported shaft work by coupking shaft II22 with magnetic power measurer II 8, and plate type condenser 9, cooling tower 13 and variable capacity pump 14 are connected to form successively closed-loop path and form cooling system.The specific works situation is as follows: air enters in motor 2 after gas compressor 1 is compressed, in cylinder, after the burning expansion acting, by motor 2, discharged, thereby waste gas enters in turbo machine 3 and to promote turbo machine 3 rotations and drive gas compressors 1 work, from turbo machine 3, high-temperature gas out is again through entering in atmosphere by outlet pipe after release heat bundled tube vaporizer 4.Organic substance absorbs the heat that diesel engine vent gas discharges and is converted into gaseous state in bundled tube vaporizer 4, gas push single-screw expander I 5 expands and does work, decrease temperature and pressure forms weary gas, weary gas now also has very high energy, can continue to reclaim, therefore weary gas also needs to access in single-screw expander II 7 to continue to expand and does work, the further decrease temperature and pressure of gas is laggard to be entered level pressure heat release in board-like condenser 9 and is cooled to liquid, after liquid enters in liquid container 10, then by working medium pump 11 pumps to the circulation of carrying out a new round in bundled tube vaporizer 4.(as shown in Figure 3)
When diesel engine, under high rotating speed high load operating mode, system starts the high-temperature residual heat recovery of circulatory system.
At first by automatical control system, decompressor is exported to diverter valve I 15, decompressor outlet diverter valve II 16, gas exhausting valve II 19 and close, decompressor is exported to diverter valve III17 and gas exhausting valve I 18 opens.The high temperature circulation system mainly is comprised 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 is connected and can measures exported shaft work by coupking shaft I 21 with magnetic power measurer I6, single-screw expander II 7 is connected and can measures exported shaft work by coupking shaft II 22 with magnetic power measurer II 8, and plate type condenser 9, cooling tower 13 and variable capacity pump 14 are connected to form successively closed-loop path and form cooling system.The specific works situation is as follows: air enters in motor 2 after gas compressor 1 is compressed, in cylinder, after the burning expansion acting, by motor 2, discharged, thereby waste gas enters in turbo machine 3 turbo machine 3 rotation drive gas compressor 1 work that promote, from turbo machine 3, high-temperature gas out after release heat bundled tube vaporizer 4, enters intermediate heater 12 and continues directly to enter in atmosphere by outlet pipe after release heat again.This is that the energy of tail gas is not reclaimed fully in bundled tube vaporizer 4, connects intermediate heater 12 in its back and can reclaim more tail gas energy because when diesel engine during in high rotating speed high load working condition.Organic substance absorbs the heat that diesel engine vent gas discharges and is converted into gaseous state in bundled tube vaporizer 4, the gas push single-screw expander I 5 produced expands and does work, the gas decrease temperature and pressure forms weary gas, weary gas further absorbs the heat that diesel engine vent gas discharges in intermediate heater 12, temperature rising enthalpy increases, the weary gas of high temperature enters in single-screw expander II 7 and continues the acting of expanding, the further decrease temperature and pressure of gas is laggard to be entered level pressure heat release in board-like condenser 9 and is cooled to liquid, after liquid enters in liquid container 10, again by working medium pump 11 pumps to the circulation of carrying out a new round in bundled tube vaporizer 4.(as shown in Figure 4)
Claims (2)
1. two-stage single-screw expander organic Rankine circulation diesel tail gas waste heat utilizes system, it is characterized in that: comprise gas compressor (1), diesel engine (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), diesel engine (2), turbo machine (3), bundled tube vaporizer (4) and intermediate heater (12) are connected successively and form the direction of gas flow in diesel engine intake and 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) and working medium pump (11) are connected to form the closed-loop path of Rankine cycle successively, wherein single-screw expander I (5) is connected and can measures exported shaft work by coupking shaft I (21) with magnetic power measurer I (6), single-screw expander II (7) is connected and can measures exported shaft work by coupking shaft II (22) with magnetic power measurer II (8), plate type condenser (9), cooling tower (13) and variable capacity pump (14) are connected to form successively closed-loop path and form cooling system, whole diesel tail gas waste heat utilizes the loop control of system to export diverter valve by decompressor and gas exhausting valve is regulated, concrete Placement is: the outlet of single-screw expander I (5) is divided into three pipelines by pipeline, article one, pipeline exports diverter valve I (15) by decompressor and is connected to plate type condenser (9), the second pipeline exports diverter valve II (16) by decompressor and is connected to single-screw expander II (7), and the 3rd pipeline exports diverter valve III (17) by decompressor and be connected to intermediate heater (12), bundled tube vaporizer (4) tail gas outlet side is divided into two pipelines by three-way pipe, article one, pipeline is connected to after intermediate heater (12) and joins with outlet pipe by gas exhausting valve I (18), and another pipeline passes through gas exhausting valve II (19) and directly is connected with outlet pipe, turbo machine (3) links into an integrated entity by turbomachine compressor coupking shaft (20) with gas compressor (1) in addition.
2. realize that two-stage single-screw expander organic Rankine circulation diesel tail gas waste heat as claimed in claim 1 utilizes the method for the working procedure of system, is characterized in that for one kind:
1) when diesel engine under slow-speed of revolution running on the lower load, system starts the low temperature exhaust heat recovery of circulatory system
At first by automatical control system, decompressor is exported to the outlet of diverter valve II (16), decompressor diverter valve III (17), gas exhausting valve I (18) and close, decompressor is exported to diverter valve I (15) and gas exhausting valve II (19) opens, the low-temperature circulating system is mainly by bundled tube vaporizer (4), single-screw expander I (5), plate type condenser (9), liquid container (10), working medium pump (11) forms, wherein single-screw expander I (5) is connected and can measures exported shaft work by coupking shaft I (21) with magnetic power measurer I (6), plate type condenser (9), cooling tower (13) and variable capacity pump (14) are connected to form successively closed-loop path and form cooling system, the specific works process is: air enters in diesel engine (2) after gas compressor (1) is compressed, in cylinder, after the burning expansion acting, by diesel engine (2), discharged, waste gas enters in turbo machine (3) and promotes turbo machine (3) thereby rotation drive gas compressor (1) work, from turbo machine (3) high-temperature gas out again through entering in atmosphere by outlet pipe after release heat bundled tube vaporizer (4), organic substance absorbs the heat that diesel engine vent gas discharges and is converted into gaseous state in bundled tube vaporizer (4), the gas push single-screw expander I (5) produced expands and does work, this process can be considered the adiabatic expansion of working medium, form weary gas after the gas decrease temperature and pressure, weary gas enters level pressure heat release in plate type condenser (9) and is cooled to liquid, after liquid enters in liquid container (10), again by working medium pump (11) pump to the circulation of carrying out a new round in bundled tube vaporizer (4),
2) when diesel engine under middle high rotating speed middle and high load working condition, the warm heat recovery circulatory system during system starts
At first by automatical control system, decompressor is exported to the outlet of diverter valve I (15), decompressor diverter valve III (17), gas exhausting valve I (18) and close, decompressor is exported to diverter valve II (16) and gas exhausting valve II (19) opens, the middle temperature circulatory system is 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) forms, wherein single-screw expander I (5) is connected and can measures exported shaft work by coupking shaft I (21) with magnetic power measurer I (6), single-screw expander II (7) is connected and can measures exported shaft work by coupking shaft II (22) with magnetic power measurer II (8), plate type condenser (9), cooling tower (13) and variable capacity pump (14) are connected to form successively closed-loop path and form cooling system, the specific works process is: air enters in diesel engine (2) after gas compressor (1) is compressed, in cylinder, after the burning expansion acting, by diesel engine (2), discharged, waste gas enters in turbo machine (3) and promotes turbo machine (3) thereby rotation drive gas compressor (1) work, from turbo machine (3) high-temperature gas out again through entering in atmosphere by outlet pipe after release heat bundled tube vaporizer (4), organic substance absorbs the heat that diesel engine vent gas discharges and is converted into gaseous state in bundled tube vaporizer (4), gas push single-screw expander I (5) acting of expanding, decrease temperature and pressure forms weary gas, weary gas now also has very high energy, can continue to reclaim, therefore weary gas also needs to access in single-screw expander II (7) to continue to expand and does work, the further decrease temperature and pressure of gas is laggard to be entered level pressure heat release in board-like condenser (9) and is cooled to liquid, after liquid enters in liquid container (10), again by working medium pump (11) pump to the circulation of carrying out a new round in bundled tube vaporizer (4),
3) when diesel engine under high rotating speed high load operating mode, system starts the high-temperature residual heat recovery of circulatory system
At first by automatical control system, decompressor is exported to the outlet of diverter valve I (15), decompressor diverter valve II (16), gas exhausting valve II (19) and close, decompressor is exported to diverter valve III (17) and gas exhausting valve I (18) opens, 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) forms, wherein single-screw expander I (5) is connected and can measures exported shaft work by coupking shaft I (21) with magnetic power measurer I (6), single-screw expander II (7) is connected and can measures exported shaft work by coupking shaft II (22) with magnetic power measurer II (8), plate type condenser (9), cooling tower (13) and variable capacity pump (14) are connected to form successively closed-loop path and form cooling system, the specific works process is: air enters in diesel engine (2) after gas compressor (1) is compressed, in cylinder, after the burning expansion acting, by diesel engine (2), discharged, waste gas enters in turbo machine (3) and promotes turbo machine (3) thereby rotation drive gas compressor (1) work, from turbo machine (3) high-temperature gas out again after release heat bundled tube vaporizer (4), entering intermediate heater (12) continues by outlet pipe, directly to enter in atmosphere after release heat, this is because when diesel engine during in high rotating speed high load working condition, the energy of tail gas is not reclaimed fully in bundled tube vaporizer (4), connect intermediate heater (12) in its back and can reclaim more tail gas energy, organic substance absorbs the heat that diesel engine vent gas discharges and is converted into gaseous state in bundled tube vaporizer (4), the gas push single-screw expander I (5) produced expands and does work, the gas decrease temperature and pressure forms weary gas, weary gas further absorbs the heat that diesel engine vent gas discharges in intermediate heater (12), temperature rising enthalpy increases, the weary gas of high temperature enters in single-screw expander II (7) and continues the acting of expanding, the further decrease temperature and pressure of gas is laggard to be entered level pressure heat release in board-like condenser (9) and is cooled to liquid, after liquid enters in liquid container (10), again by working medium pump (11) pump to the circulation of carrying out a new round in bundled tube vaporizer (4).
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| CN201010579930.9A CN102022221B (en) | 2010-12-03 | 2010-12-03 | Organic Rankine cycle diesel engine tail gas and waste heat utilization system using two-stage single-screw expanding machine |
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| CN201010579930.9A CN102022221B (en) | 2010-12-03 | 2010-12-03 | Organic Rankine cycle diesel engine tail gas and waste heat utilization system using two-stage single-screw expanding machine |
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| CN107060923B (en) * | 2017-03-07 | 2023-04-11 | 吉林大学 | Spatial regenerative organic Rankine 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 |
| 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 |
| CN110578560A (en) * | 2019-09-05 | 2019-12-17 | 杭州万辰机电科技有限公司 | ORC circulation system based on static pressure air bearing |
| CN111535889B (en) * | 2020-05-07 | 2021-01-05 | 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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| CN201891525U (en) * | 2010-12-03 | 2011-07-06 | 北京工业大学 | Exhaust waste heat utilization system for organic Rankin cycle diesel engine of two-stage single screw expander |
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| JP4140543B2 (en) * | 2004-03-24 | 2008-08-27 | 株式会社デンソー | Waste heat utilization equipment |
| JP2008231981A (en) * | 2007-03-19 | 2008-10-02 | Sanden Corp | Waste heat recovery apparatus for internal combustion engine |
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| CN101815903A (en) * | 2007-05-29 | 2010-08-25 | Utc电力公司 | Rankine cycle power plant heat source control |
| CN201891525U (en) * | 2010-12-03 | 2011-07-06 | 北京工业大学 | Exhaust waste heat utilization system for organic Rankin cycle diesel engine of two-stage single screw expander |
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