CN103395353A - Vehicle-mounted composite solar energy and tail gas waste heat recovery absorption refrigeration system - Google Patents
Vehicle-mounted composite solar energy and tail gas waste heat recovery absorption refrigeration system Download PDFInfo
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- CN103395353A CN103395353A CN2013103469878A CN201310346987A CN103395353A CN 103395353 A CN103395353 A CN 103395353A CN 2013103469878 A CN2013103469878 A CN 2013103469878A CN 201310346987 A CN201310346987 A CN 201310346987A CN 103395353 A CN103395353 A CN 103395353A
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Abstract
The invention relates to a vehicle-mounted composite solar energy and tail gas waste heat recovery absorption refrigeration system which comprises a condenser, an evaporator, an absorber and a generator. A liquid state refrigerating fluid outlet of the condenser is connected with a liquid state refrigerating fluid inlet of the evaporator, a gas state refrigerating fluid outlet of the evaporator is connected with a gas state refrigerating fluid inlet of the absorber, a mixed liquid outlet of the absorber is connected with a mixed liquid inlet of the generator, an absorbent inlet of the absorber is connected with an absorbent outlet of the generator, a gas state refrigerating fluid outlet of the generator is connected with a gas state refrigerating fluid inlet of the condenser, a heat exchange pipe which is used for conducting heat exchange with mixed liquid in the generator is arranged in the generator, and the heat exchange pipe in the generator is connected with a heat generation device through a water inlet-outlet pipe arranged outside the generator. According to the vehicle-mounted composite solar energy and tail gas waste heat recovery absorption refrigeration system, before a vehicle is started, energy sources are provided by the solar energy, and after the vehicle is started, the energy sources are provided by the tail gas waste heat of the vehicle. Therefore, the energy resources are saved, the heat pollution of the tail gas of the vehicle to the atmosphere is avoided, and the requirement of human bodies for comfort of the heat environment is met.
Description
Technical field
The present invention relates to a kind of vehicle-mounted refrigerating system.Particularly relate to a kind of vehicle-mounted composite solar and using waste heat from tail gas and reclaim absorption system.
Background technology
Existing automobile air conditioning technology is normally: automobile air conditioning refrigerating system is comprised of compressor, condenser, drier receiver, expansion valve, evaporator and blowing engine etc.Between each parts, adopt copper pipe (or aluminum pipe) and high-pressure rubber hose to connect into a closed system.During refrigeration system work, refrigerant circulates in this closed system with different states, each circulation has four basic processes: 1, compression process: compressor sucks the refrigerant gas of the low-temp low-pressure at evaporator outlet place, and the gas that it is compressed into to High Temperature High Pressure is discharged compressor.2, heat radiation process: the superheated refrigerant gas of High Temperature High Pressure enters condenser, and due to the reduction of pressure and temperature, refrigerant gas is condensed into liquid, and discharges a large amount of heats.3, throttle process: the refrigerant liquid that temperature and pressure is higher becomes large by volume after expansion gear, and pressure and temperature sharply descends, and with vaporific (fine drop), discharges expansion gear.4, endothermic process: atomized refrigerant liquid enters evaporator, thus the time refrigerant boiling point far below temperature in evaporator, therefore refrigerant liquid flashes to gas.Heat in evaporation process around a large amount of the absorption, then the refrigerant vapour of low-temp low-pressure enters again compressor.The carrying out that said process goes round and begins again, reach the purpose that reduces the evaporator ambient air temperature.
What current car air-conditioner adopted is the mechanical compression type refrigeration, and core component is mechanical compressor, is movable parts, during work, will consume mechanical energy.And it is when stopping, and the a/c system of automobile can not move, and in car, heat can not be got rid of, into the car the time, endurable, when car starts fast-refrigerating as people one, people's health is converted to cold state very soon from heat, and this process is shorter, easily causes some disease of human body.
In air conditioning for automobiles, the main steam compressing air conditioner system of using, generally to consume 8%～12% car engine mechanomotive force, wherein compressor accounts for 80%～85%, blower fan accounts for 15%～20%, and large like this power consumption has not only increased oil consumption, and may cause that water tank is overheated, the practical efficiency that affects the vehicle dynamic quality automotive engine is generally 35%～40% left and right, accounts for the launched machine recirculated cooling water of the energy of heat output of fuel more than 1/2 and exhaust and takes away.Reclaiming and utilize this part waste heat to drive refrigeration system, realizing air conditioning for automobiles, is desirable maximum energy-saving scheme, is also the problem that present countries in the world are all being studied.
Summary of the invention
Technical matters to be solved by this invention is, provides a kind of solar power while stopping by utilization that the energy is provided, and adopts the vehicle-mounted composite solar of absorption system and using waste heat from tail gas to reclaim absorption system.
the technical solution adopted in the present invention is: a kind of vehicle-mounted composite solar and using waste heat from tail gas reclaim absorption system, include condenser, evaporator, also be provided with resorber and producer, wherein, the liquid refrigerant outlet of condenser connects the liquid refrigerant entrance of evaporator, the gaseous refrigerant outlet of described evaporator connects the gaseous refrigerant entrance of resorber, the mixing material outlet of described resorber connects the mixing material entrance of producer, the absorbent entrance of resorber connects the absorbent outlet of producer, the gaseous refrigerant outlet of described producer connects the gaseous refrigerant entrance of condenser, in described producer, be provided with for producer in mixing material carry out the heat exchange pipe of interchange of heat, heat exchange pipe in described producer connects heat energy generation device by the water inlet pipe and water outlet pipe that is arranged on the producer outside.
Described heat energy generation device is the solar power medium-temperature collectors, the water outlet of described solar power medium-temperature collectors is connected the water inlet of the heat exchange pipe in described producer by the first outside coolant inlet pipe and the first electromagnetic valve on being arranged on the first outside coolant inlet pipe, the water inlet of described solar power medium-temperature collectors connects the water outlet of the heat exchange pipe in described producer by the first outside coolant outlet pipe, described solar power medium-temperature collectors is arranged on the roof of automobile.
Described heat energy generation device is the tail gas heat-exchanger rig, the water outlet of described tail gas heat-exchanger rig is connected the water inlet of the heat exchange pipe in described producer by the second outside coolant inlet pipe and the second electromagnetic valve on being arranged on the second outside coolant inlet pipe, the water inlet of described tail gas heat-exchanger rig connects the water outlet of the heat exchange pipe in described producer by the second outside coolant outlet pipe, described tail gas heat-exchanger rig is arranged on the exhaust emissions place of automobile.
Described heat energy generation device is solar power medium-temperature collectors and tail gas heat-exchanger rig, the water outlet of described solar power medium-temperature collectors is connected the water inlet of the heat exchange pipe in described producer by the first outside coolant inlet pipe and the first electromagnetic valve on being arranged on the first outside coolant inlet pipe, the water inlet of described solar power medium-temperature collectors connects the water outlet of the heat exchange pipe in described producer by the first outside coolant outlet pipe; The water outlet of described tail gas heat-exchanger rig is connected the water inlet of the heat exchange pipe in described producer by the second outside coolant inlet pipe and the second electromagnetic valve on being arranged on the second outside coolant inlet pipe, the water inlet of described tail gas heat-exchanger rig connects the water outlet of the heat exchange pipe in described producer by the second outside coolant outlet pipe, described solar power medium-temperature collectors is arranged on the roof of automobile, and described tail gas heat-exchanger rig is arranged on the exhaust emissions place of automobile.
Described solar power medium-temperature collectors includes be used to the plate body that absorbs solar heat and is formed on the water-circulating pipe in plate body, and the water inlet of described water-circulating pipe connects outside coolant outlet pipe, and the water outlet of described water-circulating pipe connects outside coolant inlet pipe.
described tail gas heat-exchanger rig includes on two-port the tubular shell that is respectively arranged with end plate, by the flange correspondence, be connected to a described tubular shell left side respectively, the left shell cap at right two ends and right shell cap, in described tubular shell, axially parallel is provided with many water pipes, two ports of described many water pipes are embedded in respectively in the through hole that is formed on end plate, and be connected with described left shell cap or right shell cap, on described left shell cap, be provided with the water outlet that is connected with the second outside coolant inlet pipe, on described right shell cap, be provided with the water inlet that is connected with the second outside coolant outlet pipe, in described left shell cap and right shell cap, be respectively arranged with that the head and the tail that can make many water pipes are communicated with and jointly form the dividing plate more than 2 of circulation line with described water outlet and water inlet, on the barrel of described tubular shell, be respectively arranged with the admission port that carries out the vehicle exhaust of interchange of heat for importing and the circulating water in described water pipe, and for discharge with described water pipe in circulating water carry out the exhausr port of the vehicle exhaust after interchange of heat.
In described tubular shell, be provided with a plurality of baffle plates be used to guide described vehicle exhaust flow perpendicular with described water pipe.
On described baffle plate, have the through hole that a plurality of diameters are identical with described water pipe diameter, described water pipe is fixed in tubular shell by the through hole that runs through on baffle plate.
A kind of vehicle-mounted composite solar of the present invention and using waste heat from tail gas reclaim absorption system, solar power while stopping by utilization provides the energy, adopt absorption system, and employing Based Intelligent Control, as opened refrigeration system half an hour before driving, not only save the energy, and met the traveling comfort requirement of human body to thermal environment.After car starts, by solar power, provide the energy to be switched to the residual heat of tail gas of automobile recovery energy is provided, so both avoided the thermal pollution of vehicle exhaust to atmosphere, alleviation to urban heat land effect can play a role, the most important thing is to have saved a large amount of fuel oils for refrigeration in automobile provides the energy.
The accompanying drawing explanation
Fig. 1 is that the vehicle-mounted composite solar of the present invention and using waste heat from tail gas reclaim absorption system the first example structure schematic diagram;
Fig. 2 is the structural representation of second embodiment of the invention;
Fig. 3 is the structural representation of solar power medium-temperature collectors of the present invention;
Fig. 4 is the structural representation of third embodiment of the invention;
Fig. 5 is the structural representation of tail gas heat-exchanger rig of the present invention;
Fig. 6 does not adopt when of the present invention vehicle interior temperature with the parking period variation diagram;
Fig. 7 adopts when of the present invention vehicle interior temperature with the parking period variation diagram;
Fig. 8 is the present invention arranges on automobile design sketch.
1: condenser 2: evaporator
5: resorber 6: solution pump
7: flow regulating valve 8: the solar power medium-temperature collectors
9: 10: the second electromagnetic valves of tail gas heat-exchanger rig
11: 12: the first outside coolants inlet pipe of switch valve
14: the second outside coolants inlet pipe of 13: the first outside coolant outlet pipe
15: the second outside coolant outlet pipe
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, a kind of vehicle-mounted composite solar of the present invention and using waste heat from tail gas recovery absorption system are described in detail.
as shown in Figure 1, a kind of vehicle-mounted composite solar of the present invention and using waste heat from tail gas reclaim absorption system, include condenser 1, evaporator 2, resorber 5 and producer 4, wherein, the liquid refrigerant outlet of condenser 1 is connected the liquid refrigerant entrance of evaporator 2 by pipeline and the flow regulating valve 7 on being arranged on pipeline, the gaseous refrigerant outlet of described evaporator 2 connects the gaseous refrigerant entrance of resorber 5 by pipeline, the mixing material outlet of described resorber 5 is connected the mixing material entrance of producer 4 with the solution pump 6 on being arranged on this pipeline by pipeline, the absorbent entrance of resorber 5 is connected the absorbent outlet of producer 4 by pipeline and the switch valve 11 on being arranged on this pipeline, the gaseous refrigerant outlet of described producer 4 connects the gaseous refrigerant entrance of condenser 1 by pipeline, in described producer 4, be provided with for producer 4 in mixing material carry out the heat exchange pipe of interchange of heat, heat exchange pipe in described producer 4 connects for the heat energy generation device of heat energy is provided to described heat exchange pipe by the water inlet pipe and water outlet pipe that is arranged on producer 4 outsides.
As shown in Figure 2, described heat energy generation device is solar power medium-temperature collectors 8, the water outlet of described solar power medium-temperature collectors 8 is connected the water inlet of the heat exchange pipe in described producer 4 by the first outside coolant inlet pipe 12 and the first electromagnetic valve 3 on being arranged on the first outside coolant inlet pipe 12, the water inlet of described solar power medium-temperature collectors 8 connects the water outlet of the heat exchange pipe in described producer 4 by the first outside coolant outlet pipe 13, described solar power medium-temperature collectors 8 is arranged on the roof of automobile.
The source of above-described embodiment heat energy is by circulating water heating by warm collecting plate in solar power, then hot water is passed through to producer heat exchange with it, refrigerant is separated with absorbent, the high-temperature high-pressure refrigerant gas that is evaporated is delivered to condenser, carry out condensation, then pass through flow regulating valve, become the refrigerant liquid of low-temp low-pressure, deliver to evaporator, produce refrigeration, refrigerant liquid heat absorption simultaneously forms refrigerant gas, deliver to resorber, be absorbed agent and absorb the formation mixing material, then deliver to producer by solution pump, complete cyclic process.
As shown in Figure 4, described heat energy generation device is tail gas heat-exchanger rig 9, the water outlet of described tail gas heat-exchanger rig 9 is connected the water inlet of the heat exchange pipe in described producer 4 by the second outside coolant inlet pipe 14 and the second electromagnetic valve 10 on being arranged on the second outside coolant inlet pipe 14, the water inlet of described tail gas heat-exchanger rig 9 connects the water outlet of the heat exchange pipe in described producer 4 by the second outside coolant outlet pipe 15, described tail gas heat-exchanger rig 9 is arranged on the exhaust emissions place of automobile.
the source of above-described embodiment heat energy is that the heat by vehicle exhaust provides the energy for system, tail gas enters the tail gas heat-exchanger rig and transfers heat to producer, heat exchange with it, refrigerant is separated with absorbent, the high-temperature high-pressure refrigerant gas that is evaporated is delivered to condenser, carry out condensation, then pass through flow regulating valve, become the refrigerant liquid of low-temp low-pressure, deliver to evaporator, produce refrigeration, refrigerant liquid heat absorption simultaneously forms refrigerant gas, deliver to resorber, be absorbed agent and absorb the formation mixing material, by solution pump, deliver to producer again, complete cyclic process.
As shown in Figure 1, described heat energy generation device can be that solar power medium-temperature collectors 8 and tail gas heat-exchanger rig 9 form jointly, the water outlet of described solar power medium-temperature collectors 8 is connected the water inlet of the heat exchange pipe in described producer 4 by the first outside coolant inlet pipe and the first electromagnetic valve 3 on being arranged on the first outside coolant inlet pipe, the water inlet of described solar power medium-temperature collectors 8 connects the water outlet of the heat exchange pipe in described producer 4 by the first outside coolant outlet pipe; The water outlet of described tail gas heat-exchanger rig 9 is connected the water inlet of the heat exchange pipe in described producer 4 by the second outside coolant inlet pipe and the second electromagnetic valve 10 on being arranged on the second outside coolant inlet pipe, the water inlet of described tail gas heat-exchanger rig 9 connects the water outlet of the heat exchange pipe in described producer 4 by the second outside coolant outlet pipe, described solar power medium-temperature collectors 8 is arranged on the roof of automobile, and described tail gas heat-exchanger rig 9 is arranged on the exhaust emissions place of automobile.
heat energy source in above-described embodiment is divided into two parts, a part is by circulating water heating by warm collecting plate in solar power, then hot water is passed through to producer heat exchange with it, refrigerant is separated with absorbent, the high-temperature high-pressure refrigerant gas that is evaporated is delivered to condenser, carry out condensation, then pass through flow regulating valve, become the refrigerant liquid of low-temp low-pressure, deliver to evaporator, produce refrigeration, refrigerant liquid heat absorption simultaneously forms refrigerant gas, deliver to resorber, be absorbed agent and absorb the formation mixing material, by solution pump, deliver to producer again, complete cyclic process, another part is that the heat by vehicle exhaust provides the energy for system, tail gas enters the tail gas heat-exchanger rig and transfers heat to producer, heat exchange with it, refrigerant is separated with absorbent, the high-temperature high-pressure refrigerant gas that is evaporated is delivered to condenser, carry out condensation, then by flow regulating valve, become the refrigerant liquid of low-temp low-pressure, deliver to evaporator, produce refrigeration, refrigerant liquid heat absorption simultaneously forms refrigerant gas, delivers to resorber, is absorbed agent and absorbs the formation mixing material, by solution pump, deliver to producer again, complete cyclic process.
As shown in Figure 3, described solar power medium-temperature collectors 8 includes be used to the plate body 81 that absorbs solar heat and is formed on the water-circulating pipe 82 in plate body 81, the water inlet 83 of described water-circulating pipe 82 connects outside coolant outlet pipe, and the water outlet of described water-circulating pipe 82 connects outside coolant inlet pipe.
as shown in Figure 5, described tail gas heat-exchanger rig 9 includes on two-port the tubular shell 95 that is respectively arranged with end plate 111, by the flange correspondence, be connected to described tubular shell 95 left sides respectively, the left shell cap 96 at right two ends and right shell cap 97, the interior axially parallel of described tubular shell 95 is provided with many water pipes 98, two ports of described many water pipes 98 are embedded in respectively in the through hole that is formed on end plate 111, and be connected with described left shell cap 96 or right shell cap 97, on described left shell cap 96, be provided with the water outlet 94 that is connected with the second outside coolant inlet pipe, on described right shell cap 97, be provided with the water inlet 93 that is connected with the second outside coolant outlet pipe, in described left shell cap 96 and right shell cap 97, be respectively arranged with the head and the tail connection that can make many water pipes 98 and jointly form the dividing plate more than 2 99 of circulation line with described water outlet 94 and water inlet 93, on the barrel of described tubular shell 95, be respectively arranged with the admission port 91 that carries out the vehicle exhaust of interchange of heat for importing the circulating water interior with described water pipe 98, and for discharge with described water pipe 98 in circulating water carry out the exhausr port 92 of the vehicle exhaust after interchange of heat.
In described tubular shell 95, be provided with a plurality of baffle plates 910 be used to guide described vehicle exhaust flow perpendicular with described water pipe 98.On described baffle plate 910, have the through hole that a plurality of diameters are identical with described water pipe 98 diameters, described water pipe 98 is fixed in tubular shell 95 by the through hole that runs through on baffle plate 910.
Tail gas heat-exchanger rig 9, tail gas enters from gas inlet, in the heat exchanger the inside, along dividing plate, passes through, and cold water is entered by cold water inlet simultaneously, in pipeline, flows, and by tail gas heating, temperature raises, and has the hot water mouth to flow out, and leads to producer.
Below take sedan air conditioner with mono-potency lithium bromide absorption-type cold-hot water dispenser group system as example, effect of the present invention is described.Cooling water expansion tank in lithium-bromide absorption-type refrigerating machine, adopt and first pass through resorber, then through producer, enter again the series system of condenser, the cooling water expansion tank gangway temperature difference is got 8～9 ℃, cooling water expansion tank is close with the ratio of the thermal load of these two equipment at the ratio of the temperature rise of resorber and condenser, and condenser is a bit larger tham in the thermal load of general resorber and the temperature rise of cooling water expansion tank.
Condensing temperature tk is higher 3～5 ℃ than cooling water outlet temperature in condenser, and evaporating temperature to is lower 2～5 ℃ than chilled water outlet temperature; In resorber, the solution minimum temperature is higher 3～5 ℃ than cooling water outlet temperature; In producer, solution highest temperature t4 is lower 10～40 ℃ than heating agent temperature; The coned sol temperature out t5 of H Exch is higher 12～25 ℃ than weak solution side entrance temperature t 2.
Known refrigerating capacity is 3100W left and right (seeing University Of Chongqing's journal (natural science edition) air conditioner of miniature car calculation of cooling load) chilled water outlet temperature t cw2=7 ℃, and cooling water inlet temperature tw1=32 ℃, producer thermal source are vehicle exhaust (temperature is got 400 ℃).
1. according to known conditions and empirical relationship, determine following design parameters
Condenser cooling water temperature out tw3=tw1+9=41 ℃,
Condensing temperature tk=tw3+5=46 ℃
Condensing pressure pk=10.09kpa
Evaporating temperature to=tcw2-2=5 ℃
Evaporating pressure p0=0.87kpa
Resorber cooling water outlet temperature tw2=tw1+5=37 ℃
Resorber solution minimum temperature t1=tw2+6.2=43.2 ℃
T4=119.6 ℃-17.4 ℃=102.2 ℃ of producer solution highest temperatures (saturated steam of pressing th=119.6 ℃ herein calculates)
The maximum end temperature difference t5-t2=25 ℃ of H Exch
2. determine loop parameter
The circulation ratio f=ε s/ of solution (ε s-ε w)=0.64/ (0.64-0.595)=14.2
The heat exchanger outlet coned sol is over-cooled solution.By t5=t2+25=68.2 ℃. reach ε s=64%. and try to achieve enthalpy h5=332.43kJ/ ㎏, the specific enthalpy of h6 ≈ h5. heat exchanger outlet weak solution point 3 is tried to achieve by the H Exch thermal balance type: h3=h2+ (h4-h5) [(f-1)/f]=281.77+(393.56-332.43) [(14.2-1)/14.2]=338.43kJ/ ㎏
3. thermodynamic coefficient
ε=q0/qg=2317.56/3487.20=0.665
4. the thermal load of each equipment and flow
The refrigerant cycle amount
Weak solution internal circulating load F=fD=14.2 * 0.00134=0.019 ㎏/s
Coned sol internal circulating load F-D=(f-1) D=0.0177 ㎏/s
Each machine utilization
Producer
Resorber
Condenser
H Exch
5. the water yield and heating steam amount
Cooling water inflow (condenser)
Or cooling water inflow (resorber)
The cooling water inflow of the two is substantially identical
6. the parameter of vehicle exhaust and calculating
As an example of the A62.0T of Audi example, illustrate, the maximum power of its driving engine is 132kW, and the thermodynamic coefficient of supposing mono-potency lithium bromide absorption-type cold-hot water dispenser group is 0.60, and Audi car engine cylinder effective waste heat that can provide is:
Qy=(N/ηe)·ηw·COP
In formula: Qy is effective waste heat; N is the power of automotive engine; The effective power of η e driving engine; The heat that η w auto emission tail gas is taken away accounts for the heat output of fuel ratio; COP is the thermodynamic coefficient of cold/hot water machine of lithium bromide group.Have
Qy=132÷0.4×20%×0.6=39.6kW
And in the cold/hot water machine of lithium bromide group producer thermal load be:
Utilizing aspect solar power parking refrigeration, the air conditioning for automobiles cooling load comprises that building enclosure obtains heat Qa, vehicle window and obtains heat Qb, door and window and leak out to such an extent that heat Qc, heat gain from occupant Qd, driving engine import in car chamber heat Qe, car 6 parts such as other heat gain from appliance and equipments Qf into and form.When automobile does not start, only consider that building enclosure obtains heat Qa, vehicle window obtains heat Qb two parts and obtains heat.
Take C-class as example, afternoon cooling load maximum in car during 14:00, it is included as respectively Qa=0.701kW, Qb=0.774kW; When automobile did not start, in car, total cooling load was Q=Qa+Qb=1.475kW
The hot water temperature that the solar power medium-temperature collectors can provide is 150 ℃, and the fefrigerator return water temperature is about 50 ℃; Air themperature in car when general summer, air conditioning for automobiles reached parking in 20-30 minute, so freezed in advance in 30 minutes before automobile starting, eliminating the needed quantity of circulating water of the indoor waste heat amount of car is G=1.475 * 1800/[0.6 * 4.19 * (150-50)]=10.56kg; Solar power medium-temperature collectors area is 2m
2, collecting efficiency is 51.3%, summer, intensity of solar radiation was I=854W/m
2(taking in Beijing as example), needing the time of heat collector heating is T=4.19 * 10.56 * (150-50)/(2 * 0.854 * 51.3% * 3600)=1.4h
Fig. 6 is vehicle interior temperature curve (these data are from Chongqing Univ. of Architecture's journal " Che Neiwen that summer, air-conditioner vehicle was parked in open air becomes characteristic research ") over time during parking of automobile in summer, and Fig. 7 is vehicle interior temperature curve (this data based theoretical calculating is got) over time while opening the solar airconditioning refrigeration.
7. compression-type refrigeration and absorption refrigeration heat interchanging area are relatively
Compression-type refrigeration Car Air Conditioning System parameter:
Evaporating pressure: 308.61kPa, evaporating temperature: 0 ℃, condensing pressure: 1628kPa, condensing temperature: 63 ℃, the warm braw heat exchanger inlets
Air themperature tc1=18 ℃, outlet air temperature tc2=33 ℃, the warm braw mean temperature tj=85 ℃ of hot water in H Exch.
Below the area of compression air conditioning for automobiles and engine cooling water system heat exchanger and the Area comparison of absorption system heat exchanger
The Calculation of Heat Transfer result
As can be seen from the above table, sedan air conditioner is more smaller than the area of existing Car Air Conditioning System with mono-potency lithium bromide absorption-type cold-hot water dispenser group system, if consider the compressor in existing Car Air Conditioning System, sedan air conditioner is little with the volume of the existing Car Air Conditioning System of volume ratio of mono-potency lithium bromide absorption-type cold-hot water dispenser group system again.
Along with the progress of technology, the efficiency of lithium-bromide absorption-type refrigerating machine group progressively improves, and is also more and more obvious for the advantage of compression-type refrigeration, can be applied to air conditioning for automobiles.And calculate and analyze through the theory of front, the temperature of vehicle exhaust is between 400-600 ℃, after with the lithium bromide refrigerating agent, fully carrying out interchange of heat, still can reach very high temperature, can meet the temperature requirement of lithium bromide absorbing type refrigeration, the energy that also has vehicle exhaust to provide can meet automobile air-conditioning refrigeration institute energy requirement; The research of another part solar thermal collector is comparative maturity, the leaving water temperature of solar thermal collector can reach 150 ℃, considerably beyond the required minimum temperature of lithium bromide absorbing type refrigeration, and with respect to solar panel, because for once transform, efficiency, far above higher than solar panel, is applied to adopt the automotive air-conditioning system of absorption refrigeration without any problem.
What this air conditioning for automobiles adopted is absorption refrigeration, and its principle of work is to utilize absorbent to carry out work to absorptive character and the desorption performance of refrigerant.Lithium-bromide absorption-type refrigerating machine is take lithium-bromide solution as absorbent, take water as refrigerant, utilizes water evaporation endothermic under high vacuum to reach the purpose of refrigeration.For process of refrigerastion can continuously be gone on, water as refrigerant steam after evaporation is absorbed by lithium-bromide solution, solution is thinning, this process occurs in resorber, then take heat energy as power, its moisture is separated the solution heating, and solution thickens, this process is carried out in producer.The steam that producer obtains condenses into water in condenser, after throttling, deliver in evaporator and evaporate again.Such principle of work can be saved the compressor in compression-type refrigeration just, also by heat energy, is replaced simultaneously the mechanical energy of compression-type refrigeration.The heat that 150 ℃ of hot water that thermal source utilizes that the solar power medium-temperature collectors produces and residual heat of tail gas of automobile reclaim.Heat in the tail gas of automobile accounts for the 35%-45% of fuel combustion total heat, temperature is between 400-600 ℃, in vehicle exhaust, contain a large amount of heats, theory through the absorption refrigeration to the waste heat of vehicle engine exhaust gas driving is calculated, utilize the heat of vehicle exhaust to drive the scheme of air conditioner refrigerating feasible, and the heat of vehicle exhaust has substantially exceeded automobile institute chilling requirement.
Take the taxicar market of China as example, under the operating mode of full air-conditioning city, the per day 300-400 kilometer that travels, per 100 km is saved 0.68L, and every day is fuel-efficient 2.04-2.72 liter, with 7.47 yuan every liter, No. 93 gasoline, is equivalent to save oil expense 15.24-20.32 unit every day; Needs were opened cold air (Shelter in South China Cities such as Shenzhen, Guangzhou need more than 180 days) in annual 120 days, the annual fuel-efficient 245-326 liter of per car, save cost of fuel 1830.15-2435.22 unit, the system mea life calculated in 7 years, and each car is on average saved 17047 yuan of left and right of fuel oil consumption.
Claims (8)
1. a vehicle-mounted composite solar and using waste heat from tail gas reclaim absorption system, include condenser (1), evaporator (2), also be provided with resorber (5) and producer (4), wherein, the liquid refrigerant outlet of condenser (1) connects the liquid refrigerant entrance of evaporator (2), the gaseous refrigerant outlet of described evaporator (2) connects the gaseous refrigerant entrance of resorber (5), the mixing material outlet of described resorber (5) connects the mixing material entrance of producer (4), the absorbent entrance of resorber (5) connects the absorbent outlet of producer (4), the gaseous refrigerant outlet of described producer (4) connects the gaseous refrigerant entrance of condenser (1), in described producer (4), be provided with for producer (4) in mixing material carry out the heat exchange pipe of interchange of heat, heat exchange pipe in described producer (4) connects heat energy generation device by being arranged on the outside water inlet pipe and water outlet pipe of producer (4).
2. a kind of vehicle-mounted composite solar according to claim 1 and using waste heat from tail gas reclaim absorption system, it is characterized in that, described heat energy generation device is solar power medium-temperature collectors (8), the water outlet of described solar power medium-temperature collectors (8) is connected the water inlet of the heat exchange pipe in described producer (4) by the first outside coolant inlet pipe and the first electromagnetic valve (3) on being arranged on the first outside coolant inlet pipe, the water inlet of described solar power medium-temperature collectors (8) connects the water outlet of the heat exchange pipe in described producer (4) by the first outside coolant outlet pipe, described solar power medium-temperature collectors (8) is arranged on the roof of automobile.
3. a kind of vehicle-mounted composite solar according to claim 1 and using waste heat from tail gas reclaim absorption system, it is characterized in that, described heat energy generation device is tail gas heat-exchanger rig (9), the water outlet of described tail gas heat-exchanger rig (9) is connected the water inlet of the heat exchange pipe in described producer (4) by the second outside coolant inlet pipe and the second electromagnetic valve (10) on being arranged on the second outside coolant inlet pipe, the water inlet of described tail gas heat-exchanger rig (9) connects the water outlet of the heat exchange pipe in described producer (4) by the second outside coolant outlet pipe, described tail gas heat-exchanger rig (9) is arranged on the exhaust emissions place of automobile.
4. a kind of vehicle-mounted composite solar according to claim 1 and using waste heat from tail gas reclaim absorption system, it is characterized in that, described heat energy generation device is solar power medium-temperature collectors (8) and tail gas heat-exchanger rig (9), the water outlet of described solar power medium-temperature collectors (8) is connected the water inlet of the heat exchange pipe in described producer (4) by the first outside coolant inlet pipe and the first electromagnetic valve (3) on being arranged on the first outside coolant inlet pipe, the water inlet of described solar power medium-temperature collectors (8) connects the water outlet of the heat exchange pipe in described producer (4) by the first outside coolant outlet pipe, the water outlet of described tail gas heat-exchanger rig (9) is connected the water inlet of the heat exchange pipe in described producer (4) by the second outside coolant inlet pipe and the second electromagnetic valve (10) on being arranged on the second outside coolant inlet pipe, the water inlet of described tail gas heat-exchanger rig (9) connects the water outlet of the heat exchange pipe in described producer (4) by the second outside coolant outlet pipe, described solar power medium-temperature collectors (8) is arranged on the roof of automobile, and described tail gas heat-exchanger rig (9) is arranged on the exhaust emissions place of automobile.
5. according to claim 2 or 4 described a kind of vehicle-mounted composite solars and using waste heat from tail gas reclaim absorption system, it is characterized in that, described solar power medium-temperature collectors (8) includes be used to the plate body (81) that absorbs solar heat and is formed on the water-circulating pipe (82) in plate body (81), the water inlet (83) of described water-circulating pipe (82) connects outside coolant outlet pipe, and the water outlet of described water-circulating pipe (82) connects outside coolant inlet pipe.
6. according to claim 3 or 4 described a kind of vehicle-mounted composite solars and using waste heat from tail gas reclaim absorption system, it is characterized in that, described tail gas heat-exchanger rig (9) includes on two-port the tubular shell (95) that is respectively arranged with end plate (111), by the flange correspondence, be connected to described tubular shell (a 95) left side respectively, the left shell cap (96) at right two ends and right shell cap (97), the interior axially parallel of described tubular shell (95) is provided with many water pipes (98), two ports of described many water pipes (98) are embedded in respectively in the through hole that is formed on end plate (111), and be connected with described left shell cap (96) or right shell cap (97), on described left shell cap (96), be provided with the water outlet (94) that is connected with the second outside coolant inlet pipe, on described right shell cap (97), be provided with the water inlet (93) that is connected with the second outside coolant outlet pipe, in described left shell cap (96) and right shell cap (97), be respectively arranged with that the head and the tail that can make many water pipes (98) are communicated with and jointly form the dividing plate more than 2 (99) of circulation line with described water outlet (94) and water inlet (93), on the barrel of described tubular shell (95), be respectively arranged with the admission port (91) that carries out the vehicle exhaust of interchange of heat for importing the circulating water interior with described water pipe (98), and for discharge with described water pipe (98) in circulating water carry out the exhausr port (92) of the vehicle exhaust after interchange of heat.
7. a kind of vehicle-mounted composite solar according to claim 6 and using waste heat from tail gas reclaim absorption system, it is characterized in that, in described tubular shell (95), be provided with a plurality of baffle plates (910) be used to guide described vehicle exhaust flow perpendicular with described water pipe (98).
8. a kind of vehicle-mounted composite solar according to claim 7 and using waste heat from tail gas reclaim absorption system, it is characterized in that, on described baffle plate (910), have the through hole that a plurality of diameters are identical with described water pipe (98) diameter, described water pipe (98) is fixed in tubular shell (95) by the through hole that runs through on baffle plate (910).
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| CN2013103469878A CN103395353A (en) | 2013-08-09 | 2013-08-09 | Vehicle-mounted composite solar energy and tail gas waste heat recovery absorption refrigeration system |
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| CN2013103469878A CN103395353A (en) | 2013-08-09 | 2013-08-09 | Vehicle-mounted composite solar energy and tail gas waste heat recovery absorption refrigeration system |
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| CN103968595A (en) * | 2014-05-15 | 2014-08-06 | 上海理工大学 | Absorption type automotive air conditioner |
| CN105109306A (en) * | 2015-09-15 | 2015-12-02 | 天津大学 | Automobile tail gas waste heat recycling positive and inverse combined cycle cold and hot electricity self-coupling system |
| CN107097605A (en) * | 2017-02-23 | 2017-08-29 | 浙江吉利控股集团有限公司 | A kind of vehicle air circulatory system and vehicle |
| CN108909404A (en) * | 2018-07-24 | 2018-11-30 | 安徽宜万丰电器有限公司 | A kind of new-energy automobile solar airconditioning refrigerating plant |
| CN110068170A (en) * | 2019-04-30 | 2019-07-30 | 西安交通大学 | A kind of oilfield residual heat based on absorption refrigeration utilizes system |
| CN110612421A (en) * | 2017-02-27 | 2019-12-24 | 博塔驻车株式会社 | Heat exchange device |
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| CN110068170A (en) * | 2019-04-30 | 2019-07-30 | 西安交通大学 | A kind of oilfield residual heat based on absorption refrigeration utilizes system |
| CN110068170B (en) * | 2019-04-30 | 2020-05-22 | 西安交通大学 | Oil field waste heat utilization system based on absorption refrigeration |
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Application publication date: 20131120 |