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 PDF

Info

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
Authority
CN
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.)
Pending
Application number
CN201910410343.8A
Other languages
Chinese (zh)
Inventor
陈巨辉
许滔
陈纪元
马明
廖吉鹏
徐鑫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin University of Science and Technology
Original Assignee
Harbin University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Harbin University of Science and Technology filed Critical Harbin University of Science and Technology
Priority to CN201910410343.8A priority Critical patent/CN110145377A/en
Publication of CN110145377A publication Critical patent/CN110145377A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K11/00Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K17/00Using steam or condensate extracted or exhausted from steam engine plant
    • F01K17/04Using steam or condensate extracted or exhausted from steam engine plant for specific purposes other than heating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K27/00Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/32Steam 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

Landscapes

  • 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

A kind of refrigeration system based on vehicle engine exhaust gas
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.
CN201910410343.8A 2019-05-16 2019-05-16 A kind of refrigeration system based on vehicle engine exhaust gas Pending CN110145377A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN105003328B (en) The combined power and cooling system that a kind of residual heat of tail gas of automobile is recycled
Liang et al. Investigation of a refrigeration system based on combined supercritical CO2 power and transcritical CO2 refrigeration cycles by waste heat recovery of engine
CN101458000B (en) Heat-driven refrigeration and power generation integration apparatus
CN105089726A (en) Cooling, heating and power combined supply system based on double-pressure organic Rankine cycle
CN108374714A (en) A kind of Organic Rankine Cycle plenum internal-combustion engine system and method
CN102226604A (en) High-temperature vapor heat pump system for generating vapor by utilizing low-grade waste heat
CN102563987A (en) Vapor-compression refrigerating plant driven by organic Rankine cycle and method
CN207795526U (en) A kind of compressed-air energy-storage system forcing precooling suitable for peak load regulation network band
CN103983036A (en) CO2 circulation poly-generation system for waste heat recovery of internal combustion engine
Qiang et al. Exergy analysis of liquefied natural gas cold energy recovering cycles
CN205591989U (en) Cooling structure based on organic automobile -used power generation system of rankine cycle
CN101988397A (en) Low-grade heat-flow prime mover, generating system and method thereof
CN102155815B (en) Steam jet refrigeration system based on double-fluid
CN106766361A (en) A kind of refrigerator car energy-saving and environmental-friendly refrigeration system reclaimed based on engine exhaust heat
CN110552750B (en) Non-azeotropic organic Rankine-dual-injection combined cooling, heating and power system
CN102147167A (en) Steam jet refrigerating/air-conditioning system by utilizing waste heat
CN202133185U (en) High-temperature steam-generating heat pump system
CN110145377A (en) A kind of refrigeration system based on vehicle engine exhaust gas
CN202501677U (en) Steam compression refrigeration device driven by organic Rankine cycle
CN201246218Y (en) Sub-low temperature heat source gasification circulation thermodynamic system
CN102367747A (en) Novel air energy isothermal engine
CN103993981B (en) The used heat step of coupling engine cooling and vehicle refrigeration reclaims energy supplying system and method for work thereof
CN107288695A (en) A kind of environmentally friendly temp difference engine
CN105042939A (en) Method and device for acquiring cool air and electric energy by utilizing low-temperature medium
Zhao et al. Study on the performance of organic Rankine cycle-heat pump (ORC-HP) combined system powered by diesel engine exhaust

Legal Events

Date Code Title Description
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

WD01 Invention patent application deemed withdrawn after publication