CN110145377A - A kind of refrigeration system based on vehicle engine exhaust gas - Google Patents
A kind of refrigeration system based on vehicle engine exhaust gas Download PDFInfo
- Publication number
- CN110145377A CN110145377A CN201910410343.8A CN201910410343A CN110145377A CN 110145377 A CN110145377 A CN 110145377A CN 201910410343 A CN201910410343 A CN 201910410343A CN 110145377 A CN110145377 A CN 110145377A
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- China
- Prior art keywords
- exhaust gas
- engine
- working medium
- compressor
- energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/04—Using steam or condensate extracted or exhausted from steam engine plant for specific purposes other than heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/32—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines using steam of critical or overcritical pressure
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A kind of refrigeration system being applicable in vehicle engine exhaust gas, including evaporator, working medium pump, exhaust gas regenerator, condenser, screw expander, compressor, generator, circulating line, fluid reservoir, mounting electricity storage pack etc..A part is using the exhaust gas heat source of the discharge of engine as origin of heat, the exhaust gas of automobile exhaust pipe discharge heats the organic working medium in liquid reserve tank, organic working medium becomes gaseous state from liquid, then steam is passed through expanding machine acting by steam pipe, and a part drives compressor to freeze；Another part takes mounting electricity storage pack to by turbogenerator and carries out accumulation of energy, in case compressor operates normally when engine stop work, which only sufficiently recycles the thermal energy in automobile exhaust gas, and utilization rate is high.
Description
Technical field
The invention belongs to air-conditioning technical technical field, the specifically vehicle engine exhaust gas CO that is origin of heat2Trans-critical cycle
Cycle refrigeration system.
Background technique
With economic growth and the raising of living standards of the people, automobile becomes indispensable in people's daily life
's.Automobile industry also has become one of the pillar industry of national economy, and people know that the power device of automobile is mainly interior
Combustion engine converts thermal energy into kinetic energy by fuel oil, realizes the driving of automobile, but present scientific and technological level, can not benefit completely
The thermal energy generated with internal combustion engine, about 40% energy are not fully exploited, and the overwhelming majority passes through row in a manner of waste heat
Tracheae is discharged into atmosphere, and in combustion, instantaneous temperature can achieve 1800 degree to internal combustion engine, will in less than 0.1 second
Gas after burning excludes, and temperature of the automobile exhaust gas in exhaust pipe also can achieve 800 degree, and automobile exhaust gas is in exhaust pipe
The pressure of interior generation is very big, and a large amount of thermal energy is not used, and causes huge economic loss and environment.To ensure engine
It runs well, recirculated cooling water takes away the 30% of heat output of fuel, and outlet temperature general control is at 350~500 DEG C, tail gas band
35%~45% is walked, effective engine power only has 35%~40%, and fuel thermal energy is underutilized.Therefore, recycling hair
The comprehensive utilization of motivation waste gas residual heat is a kind of energy saving way that prospect is very wide.
Summary of the invention
The present invention further decreases the discharge of pollutant, and benefit to improve the Rankine cycle thermal efficiency to the maximum extent
It uses R134a (tetrafluoroethane) as cycle fluid, the exhaust gas of engine is converted into kinetic energy and electric energy, can not only store but also can be with
Power is directly provided, keeps Waste Heat Reuse more complete.
The technical scheme is that whole system is divided into two major parts: first part is having using exhaust gas as heat source
Machine Rankine cycle electrification energy storage and drive compressor work, second part are with CO2As refrigerant, trans critical cycle system is carried out
It is cold.
Compared with the prior art, the invention has the following beneficial effects: the organic working medium that the system uses, compared to water, though
Heat transfer coefficient is little, but the latent heat of vaporization is big, and specific volume is small, and evaporating temperature is small, and saturation pressure is big, and organic rankine cycle system is made to work
Efficiency greatly improves；And toxicity is very low, non-combustible in air, very environmentally friendly to atmospheric ozone layer without destruction；And
And system structure is fairly simple, compact, saves space；The design refrigeration system will be converted to electric energy and kinetic energy more than exhaust gas, generate electricity
It is combined with refrigeration, without using traditional power supply mode, reduces the consumption of fuel oil, save the use of the energy such as petroleum indirectly,
The discharge of pollution is greatly reduced.
The difference of the system and conventional system single machine compression refrigerating system, in addition to being recycled in Near The Critical Point, high pressure gas
Outside not coagulating, there are also following two points: the pressure of system is very high, but the pressure ratio of high-low pressure is small.There are one important
Advantage, the method for the pressure at expulsion by increasing compressor, using higher energy consumption as cost, but this system
The heat of exhaust gas, it may be said that almost without cost, refrigerating capacity is made to be increased to exceed normal value.
CO2Refrigeration system works all fine under all use conditions, and energetic efficiency characteristic is even more than traditional R12 system
Good, since compression process carries out under very low pressure ratio, compression efficiency is high；Since average pressure is quite high, flowing pressure damage
Lose insignificant, the heat transfer of evaporator is well.
Detailed description of the invention
Fig. 1 overall structure figure figure, Fig. 2 System Control Figure, Fig. 3 refrigerating part control figure.
Specific embodiment
A kind of working principle of the refrigeration system based on vehicle engine exhaust gas is as follows:
1, engine exhaust Organic Rankine Cycle electricity generating principle
Main flow: organic rankine cycle system is the process for converting waste heat to electric energy and kinetic energy, working principle: utilizes hair
The crank link mechanism of motivation 1 finishes the exhaust gas of function discharge, flows through evaporator 2 and heats organic working medium R134a, reaches organic working medium
Enter drum 3 to saturation, do work into expanding machine 4, a part drives compressor set to freeze, and another part passes through generator
8 generate electricity, and when exhaust gas temperature is low, can be directly over motor and drive compression 10, when compressor 10 works normally
When, accumulation of energy can be carried out by electrical power generators to mounting electricity storage pack 9, when in case engine 1 stopping working, through 16 band of inverter
Dynamic motor 17, which is worked normally from the lack of gas that expanding machine finishes function, enters the condensation of condenser 5, returns using 6 flue gas of working medium pump
The hot heating of device 7 returns evaporator 2, in cycles, continually does work and generates electricity；
2、CO2Trans critical cycle refrigeration principle
Main flow: the high pressure CO that compressor 10 is discharged2Gas is cooled down to gas cooler 11 by surrounding air, by reservoir
Drier 19 is dry and then further compressed air-breathing is cooling to regenerator 12；High pressure CO2The heat rejection process of gas undergoes temperature
Then the process that degree reduces and density constantly increases throttles by expansion valve 13, becomes low pressure two-phase state；Into evaporator
14, generate refrigeration；The return-air of evaporator is sent out after air-liquid separates, then after the overheat of regenerator 12 to separator 15, is returned
Compressor.
The system of the design has perfectly merged above-mentioned two part, and system carries out exhaust gas survey with temperature sensor 18
Temperature guarantees that system operates normally.
Claims (3)
1. a kind of refrigeration system for being applicable in vehicle engine exhaust gas, including evaporator, working medium pump, exhaust gas regenerator, condenser, spiral shell
Bar expanding machine, compressor, generator, circulating line, fluid reservoir, mounting electricity storage pack etc.；It is heat with the exhaust gas heat source of the discharge of engine
It measures source and the energy delivery means of Rankine cycle is constituted using organic working medium；In addition CO2For refrigerant, trans critical cycle is formed
Refrigerating plant.
2. when the engine operates such as claim 1, the high-temp waste gas of engine discharge heats organic working medium by evaporator, make
Organic working medium reaches saturation state, so that screw expander be driven to do work, a part drives compressor to freeze, another portion
Divide and mounting electricity storage pack progress accumulation of energy is taken to by turbogenerator.
3. the thermal energy as stored by reaching with the waste gas residual heat of engine claim 2 electric power storage technology works for engine stop
When, supplement when waste gas residual heat is unsatisfactory for compressor horsepower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910410343.8A CN110145377A (en) | 2019-05-16 | 2019-05-16 | A kind of refrigeration system based on vehicle engine exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910410343.8A CN110145377A (en) | 2019-05-16 | 2019-05-16 | A kind of refrigeration system based on vehicle engine exhaust gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110145377A true CN110145377A (en) | 2019-08-20 |
Family
ID=67594180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910410343.8A Pending CN110145377A (en) | 2019-05-16 | 2019-05-16 | A kind of refrigeration system based on vehicle engine exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110145377A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115077139A (en) * | 2021-03-16 | 2022-09-20 | 浙江雪波蓝科技有限公司 | Rankine-refrigeration cycle system and refrigerator car |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408115A (en) * | 2008-11-11 | 2009-04-15 | 西安交通大学 | Thermodynamic cycle system suitable for waste heat recovery of engine for automobile |
| CN102900562A (en) * | 2012-09-28 | 2013-01-30 | 北京工业大学 | Organic Rankine cycle system for recycling engine exhaust waste heat and changing heat change area of evaporator |
| CN105003328A (en) * | 2015-07-21 | 2015-10-28 | 同济大学 | Combined cooling and power system for recycling waste heat of automobile tail gas |
| CN207905874U (en) * | 2018-01-18 | 2018-09-25 | 北京工业大学 | A kind of tail gas waste heat recovering system |
-
2019
- 2019-05-16 CN CN201910410343.8A patent/CN110145377A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408115A (en) * | 2008-11-11 | 2009-04-15 | 西安交通大学 | Thermodynamic cycle system suitable for waste heat recovery of engine for automobile |
| CN102900562A (en) * | 2012-09-28 | 2013-01-30 | 北京工业大学 | Organic Rankine cycle system for recycling engine exhaust waste heat and changing heat change area of evaporator |
| CN105003328A (en) * | 2015-07-21 | 2015-10-28 | 同济大学 | Combined cooling and power system for recycling waste heat of automobile tail gas |
| CN207905874U (en) * | 2018-01-18 | 2018-09-25 | 北京工业大学 | A kind of tail gas waste heat recovering system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115077139A (en) * | 2021-03-16 | 2022-09-20 | 浙江雪波蓝科技有限公司 | Rankine-refrigeration cycle system and refrigerator car |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190820 |
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| WD01 | Invention patent application deemed withdrawn after publication |