CN109850327A - A kind of prediction technique of haybox cooking phase - Google Patents
A kind of prediction technique of haybox cooking phase Download PDFInfo
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- CN109850327A CN109850327A CN201811590133.3A CN201811590133A CN109850327A CN 109850327 A CN109850327 A CN 109850327A CN 201811590133 A CN201811590133 A CN 201811590133A CN 109850327 A CN109850327 A CN 109850327A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The invention discloses the prediction techniques of haybox cooking phase a kind of, comprising the following steps: is put into cargo in the chill space of incubator, obtains the physical parameter of cargo, record cargo is put into the time；The temperature of chill space in incubator is adjusted according to setting value for hold-over plate heat convection by the way that cold-storage area is arranged in；Within the scope of predetermined temperature, the heat transfer coupling model of chill space is established, calculates the temperature of cargo, then solid cold-storage material residue total amount calculates effective soak of cargo in the thermic load total amount generated by the incubator unit time and hold-over plate.The present invention realizes the on-line prediction of cold-storage heat-preserving transport case soak, can ensure cargo transport quality, promotes the promotion and application of cold-storage heat-preserving transport case.
Description
Technical field
The present invention relates to cold insulation transport fields, and in particular to a kind of prediction technique of haybox cooking phase.
Background technique
In cold chain transportation, temperature maintenance is the key that ensure cargo transport quality.Currently, mechanical refrigeration and hold-over plate system
Cold is that cold chain transportation uses wide major temperature maintenance mode.Mechanical refrigeration is traditional one of refrigeration modes, master
It is sent by refrigerant compression, and after being condensed refrigerant by condenser using compressor to evaporator, refrigerant suction heat
Evaporation, and heat is taken away, to realize air cooling-down in transport case.Mechanical refrigeration have the characteristics that it is consistent, mature, but
It purchases and use cost is larger.And cold-storage refrigeration modes can use electricity using at the peak time and carry out cold-storage, can be realized energy-saving and environment-friendly
Purpose.With continuously improving for efficient cold-storage material and Cool Storage Technology, hold-over plate insulation transfer box has obtained more and more concerns,
But it is widely applied that there are still some problems needs to solve.Wherein, the prediction of transport case soak, for transportation management side's safety
It is most important to complete transport task.By the prediction to soak, transportation management side may determine that can existing cold storage capacity be supported
Current transportation task, or specific transport strategy is formulated accordingly, guarantee the safety of transportational process, avoids because soak is estimated not
Cargo is caused to go bad during transportation enough.
Currently, being carried out mainly for Parameters variations such as heat insulation transportation the temperature inside the box pre- in existing cold chain transportation prediction model
It surveys, and it is less specifically for the temperature prediction model of cold-accumulating insulated case.In existing model, mainly by calculating insulation transfer box
Thermic load, environment conditioning strategy etc. come predict air in insulation transfer box temperature change (CN201710290612.2,
CN201410552844.7), still lack the variation of combining environmental air and calculate cargo temperature, for cold-storage heat-preserving transport case soak
On-line prediction method.
Summary of the invention
The purpose of the present invention is to propose to the prediction techniques of haybox cooking phase a kind of, to predict incubator in transportational process
In the safety heat-preserving phase avoid causing cargo transporting because soak is estimated insufficient to guarantee the safety of transportational process
Journey mesometamorphism.
In order to realize above-mentioned task, the invention adopts the following technical scheme:
A kind of prediction technique of haybox cooking phase, comprising the following steps:
It is put into cargo in the chill space of incubator, obtains the physical parameter of cargo, record cargo is put into the time；
Hold-over plate heat convection by the way that cold-storage area is arranged in carries out the temperature of chill space in incubator according to setting value
It adjusts；
Within the scope of predetermined temperature, the heat transfer coupling model of chill space is established, the temperature of cargo is calculated, then passes through guarantor
Cold-storage material residue cooling capacity calculates effective soak of cargo in the thermic load total amount and hold-over plate that the incubator unit time generates.
Further, the heat transfer coupling model of the chill space are as follows:
Wherein, ca,ρaRespectively indicate air specific heat capacity and density, c in cold-storage areai,ρiRespectively indicate cargo in chill space
Specific heat capacity and density, Va,ViRespectively indicate volume of air in cold-storage area, the volume of cargo, ta,tb,ti,twRespectively indicate chill space
Air themperature, cold-storage area air themperature, the temperature of cargo, incubator outside ambient air temperature；τ indicates time, K1,K2Respectively
Indicate the coefficient of heat conduction of chill space and cold-storage area, the coefficient of heat conduction of chill space and external environment；F1,F2Respectively indicate refrigeration
Area and cold-storage area heat transfer specific surface area, external environment and chill space heat transfer specific surface area；Qh,QxRespectively indicate cargo respiration heat, outer
Boundary's air reveals heat.
Further, the thermic load total amount Q that the incubator unit time generatesi, indicate are as follows:
Wherein, K3Indicate cold-storage area and external environment heat transfer coefficient, F3Indicate cold-storage area and external environment heat transfer specific surface
Product.
Further, the effective soak T for calculating cargo, the formula of use are as follows:
Wherein, QzIndicate the initial general refrigeration ability of cold-storage material in hold-over plate, Ti-1Indicate the haulage time (T of every batch of cargo0=
0、Q0=0), n indicates that, by the total batch of transport cargo, i is indicated by transport cargo batch (value is integer), QkIndicate that incubator is beaten
Incoming heat when unpacking door.
Further, the incubator includes the cabinet made of thermal insulation material, and the cold-storage area, chill space are casees
Internal mutually independent two regions, in which:
The hold-over plate is removable installed in the cold-storage area, and cold-storage area, chill space are connected by air -return duct.
Further, the thermal insulation material, which refers to, forms Combined thermal insulative panel by vacuum heat-insulating plate and polyurethane sheet.
Further, the both ends of the air -return duct are respectively arranged with blower, accelerate cold-storage Qu Yuleng by opening blower
The cross-ventilation of Tibetan area, to achieve the purpose that temperature is adjusted.
Further, it is additionally provided with the battery limits for placing control panel in the incubator, it is described automatically controlled to set
Standby includes controller, and the blower is connected to controller, and is provided on heat preservation box outer wall connected to the controller man-machine
Interactive interface.
Further, temperature sensing is provided with outside the cold-storage area in the incubator, chill space and incubator
Device.
Further, the temperature of the hold-over plate heat convection to chill space in incubator by the way that cold-storage area is arranged in
It is adjusted according to setting value, comprising:
When chill space, temperature reaches T1, open blower accelerate cold-storage area heat convection, with the temperature to chill space into
Row is adjusted；When temperature when chill space reaches T2, blower, T1 > T2 are closed.
The present invention has following technical characterstic:
The present invention is by arranging that multi way temperature sensor obtains the temperature inside the box situation of change in incubator, based on cargo and sky
The heat transfer characteristic of gas, the heat transfer rate of cargo and air is calculated according to the variation of air themperature, and then obtains cargo temperature, is corrected
The thermic load of insulation transfer box, in conjunction with cold-storage material cold storage capacity, service condition, the safety for finally calculating this transport task are protected
Wen Qi.The present invention realizes the on-line prediction of cold-storage heat-preserving transport case soak, can ensure cargo transport quality, promotes cold-storage
The promotion and application of insulation transfer box.
Detailed description of the invention
Fig. 1 is flow diagram of the method for the present invention when transporting multiple batches of cargo；
Fig. 2 is the cross section overlooking structure diagram of incubator；
Fig. 3 is the side structure schematic view of incubator；
Figure label explanation: 1 chill space, 2 cabinets, 3 blowers, 4 air -return ducts, 5 hold-over plates, 6 cold-storage areas, 7 battery limits, 8 temperature
Spend sensor, 9 cargos.
Specific embodiment
As shown in Figure 1, the structure of the incubator is such as the invention discloses the prediction technique of haybox cooking phase a kind of
Shown in Fig. 2, Fig. 3, the incubator includes cabinet 2 made of thermal insulation material, and in the present embodiment, incubator is rectangle knot
Structure, the thermal insulation material are the Combined thermal insulative panel being made of vacuum heat-insulating plate and polyurethane sheet.
The cold-storage area 6, chill space 1 are mutually independent two regions in cabinet 2, as shown in Fig. 2, upper in cabinet 2,
The rectangular area of downside two is respectively chill space 1, cold-storage area 6, is separated also through Combined thermal insulative panel therebetween.The cold-storage
Plate 5 is removable installed in the cold-storage area 6, as shown in Figures 2 and 3, chamber door is provided on cabinet 2, is opened chamber door
The cargo 9 for needing to refrigerate can be placed to chill space 1 afterwards, or hold-over plate 5 is installed, is replaced.Bottom is provided in cold-storage area 6
Guide rail can push hold-over plate 5 when placing hold-over plate 5 on guide rail, keep the placement of hold-over plate 5 more convenient.
In the present solution, cold-storage area 6, chill space 1 are connected by air -return duct 4, as shown in Fig. 2, opening on the top surface in cabinet 2
If the air -return duct 4.Regulate and control for the ease of the temperature to chill space 1, the both ends of the air -return duct 4 are respectively arranged with
Blower 3 accelerates the cross-ventilation in cold-storage area 6 and chill space 1 by opening blower 3, to achieve the purpose that temperature is adjusted.
For the ease of carrying out temperature regulation and the prediction of remaining cooling capacity, cold-storage area 6 in this programme in the incubator,
Temperature sensor 8 connected to the controller is provided with outside chill space 1 and incubator.Wherein, in cold-storage area 6, chill space
1, the temperature sensor 8 outside incubator is respectively provided with multiple, such as three temperature are arranged in 6 different location of cold-storage area in the present embodiment
Sensor 8 is spent, four temperature sensors 8 are arranged in 1 different location of chill space.When carrying out temperature acquisition, for some region
Current Temperatures, such as the Current Temperatures of chill space 1, the temperature acquired by the multiple temperature sensors 8 laid on 1 inner wall of chill space
Angle value is averaging to obtain the more accurate temperature value in the region.
As shown in figure 3, the battery limits 7 for placing control panel are additionally provided in the incubator, in the present embodiment
Battery limits 7 are located at 2 corner of cabinet.The control panel includes controller, and the blower 3 is connected to controller, is passed through
Controller control blower 3 opens or closes；Controller can be using such as single-chip microcontroller, PLC controller.In heat preservation box outer wall
On be provided with human-computer interaction interface connected to the controller, human-computer interaction interface includes display screen and keyboard, wherein showing screen display
Show the environmental information in cabinet 2, such as effective soak in current cold-storage area 6, the temperature in chill space 1 and cargo 9；And
Blower 3 is controlled etc. by the temperature of the settable chill space 1 of keyboard, or by controller.
The prediction technique of a kind of haybox cooking phase of the invention, by arranging that multi way temperature sensor 8 obtains in incubator
The temperature inside the box situation of change is taken, the heat transfer characteristic based on cargo 9 Yu air calculates cargo 9 and sky according to the variation of air themperature
The heat transfer rate of gas, and then obtain 9 temperature of cargo, the thermic load of insulation transfer box is corrected, has been used in conjunction with cold-storage material cold storage capacity
Situation finally calculates the safety heat-preserving phase of this transport task.This method specifically includes the following steps:
Step 1, it is put into cargo 9 in the chill space of incubator 1, obtains the physical parameter of cargo 9, record cargo 9 is put into
Time；It can start the transportational process of the batch cargo 9 at this time；
In the present solution, after incubator is put into cargo 9, by the physical parameter of cargo 9, including 9 volume of cargo, specific heat capacity,
Density etc. is stored by human-computer interaction interface into the controller.In addition, being also stored with heat preservation box structure ruler in controller
The related properties such as very little, material parameter and cold-storage material, 5 related property parameter of hold-over plate and the initial total amount of cold-storage material.This programme
In, hold-over plate 5 is rectangular slab, wherein being equipped with cold-storage material, cold-storage material uses phase change cold accumulating agent, has two shapes of solid and liquid
State；The absorption that heat is carried out during state transformation of the cold-storage material from solid to liquid, to reach refrigeration purpose.
Step 2, by the way that 5 heat convection of hold-over plate in cold-storage area 6 is arranged in the temperature of chill space 1 in incubator according to setting
Definite value is adjusted；
Specifically, in the present embodiment, controller carries out the temperature of the chill space 1 equipped with cargo 9 according to setting value automatic
Adjust: when chill space, 1 temperature reaches T1, open blower 3 accelerate cold-storage chamber heat convection, with the temperature to chill space 1 into
Row is adjusted；When the temperature of chill space 1 reaches T2, blower 3 is closed.Generally, T1 value is 8 DEG C, and T2 value is 2 DEG C；This two
A numerical value, which can according to need, to be adjusted.
Step 3, within the scope of predetermined temperature, the heat transfer coupling model of chill space 1 is established, the temperature of cargo 9 is calculated,
Solid cold-storage material residue cooling capacity calculates cargo 9 in the thermic load total amount and hold-over plate 5 generated again by the incubator unit time
Effective soak.
In the present solution, referring to that 1 temperature of chill space is at 2 DEG C after excess temperature is adjusted within the scope of the predetermined temperature
At~8 DEG C, heat transfer coupling model is established:
Wherein, ca,ρaRespectively indicate air specific heat capacity and density, c in cold-storage area 6i,ρiRespectively indicate cargo in chill space 1
9 specific heat capacity and density, Va,ViRespectively indicate volume of air in cold-storage area 6, the volume of cargo 9, ta,tb,ti,twIt respectively indicates
1 air themperature of chill space, 6 air themperature of cold-storage area, the temperature of cargo 9, incubator outside ambient air temperature；τ indicates the time,
K1,K2Respectively indicate the coefficient of heat conduction of chill space 1 and cold-storage area 6, the coefficient of heat conduction of chill space 1 and external environment；F1,F2
Respectively indicate chill space 1 and the heat transfer of cold-storage area 6 specific surface area, external environment and the heat transfer of chill space 1 specific surface area；Qh,QxTable respectively
Show 9 respiration heat of cargo, outside air leakage heat.
The thermic load total amount Q that the incubator unit time generatesi, indicate are as follows:
Wherein, K3Indicate cold-storage area 6 and external environment heat transfer coefficient, F3Indicate cold-storage area 6 and external environment heat transfer specific surface
Product, remaining meaning of parameters is the same as formula 1.
The effective soak T for calculating cargo 9, the formula of use are as follows:
Wherein, QzIndicate the initial general refrigeration ability of cold-storage material in hold-over plate 5, i.e. cold-storage material is just packed into total cold when not melting also
Amount；Ti-1Indicate 9 haulage time of every batch of cargo (cargo 9 is recorded by step 1 and is put into time calculating), n is indicated by transport cargo
9 total batch, i.e., the cargo 9 of several batches has been replaced in chill space 1 altogether in transport, and i is indicated by 9 type of transport cargo, QkIt indicates to protect
Incubator opens heat incoming when chamber door.
(i-1)QkThis two respectively indicate before the n-th batch cargo 9 of transport consumed by (n-1) batch
Cooling capacity, every time transport cargo 9 open cooling capacity consumed by chamber door (opening the door, consumption is cold to be considered as definite value).
In formula 3, when i value is 1, i.e., in a transportational process, it only is put into a batch of goods 9 in cold-storage area 6, at this time
Qi-1、Ti-1As Q0、T0, it is 0 that the two values are defined in this programme.
Such as there is a multiple batches of cargo in a transportational process, such as when first batch cargo transport is unloaded to destination,
After being packed into second lot cargo, then need to recalculate effective soak of cargo, as shown in Figure 1.
Since a batch time cargo thermic load that the unit time generates in incubator of every loading is different, first time cargo is unloaded
After load, remaining chilling requirement is for transporting the second shipments, it is therefore desirable to use the cooling capacity of first cargo consumption.Calculating the
When the effective soak of two batch cargos, step 1 is repeated to step 3, i.e., first inputs the physical parameter of the second shipments, then passes through
The temperature that formula 1 calculates cargo calculates the foundation for the thermic load total amount that the incubator unit time generates as formula 2, then passes through formula 3
Effective soak of the second shipments is calculated, the parameter wherein used in formula 3: Qi-1,Ti-1That is the thermic load of first cargo is total
Amount, haulage time, have obtained in the effective soak calculating process of first cargo；The third unit of cargo in a transportational process
The process of object, the 4th shipments etc. is identical, repeats no more.
Finally, effective soak T of cargo after each calculate is shown on the human-computer interaction interface, so as to reality
When understand cooling capacity residue situation in current incubator, can ensure cargo transport quality.
Claims (10)
1. a kind of prediction technique of haybox cooking phase, which comprises the following steps:
It is put into cargo (9) in the chill space (1) of incubator, the physical parameter of cargo (9) is obtained, when record cargo (9) is put into
Between；
By be arranged cold-storage area (6) hold-over plate (5) heat convection to the temperature of chill space in incubator (1) according to setting value
It is adjusted；
Within the scope of predetermined temperature, the heat transfer coupling model of chill space (1) is established, the temperature of cargo (9) is calculated, then is passed through
The thermic load total amount that the incubator unit time generates calculates the effective of cargo (9) with the interior cold-storage material residue cooling capacity of hold-over plate (5)
Soak.
2. the prediction technique of haybox cooking phase as described in claim 1, which is characterized in that the heat exchange of the chill space 1
Coupling model are as follows:
Wherein, ca,ρaRespectively indicate the interior air specific heat capacity in cold-storage area (6) and density, ci,ρiRespectively indicate chill space (1) interior cargo
(9) specific heat capacity and density, Va,ViRespectively indicate the interior volume of air in cold-storage area (6), the volume of cargo (9), ta,tb,ti,twPoint
It Biao Shi not chill space (1) air themperature, cold-storage area (6) air themperature, the temperature of cargo (9), incubator ambient air outside temperature
Degree；τ indicates time, K1,K2Respectively indicate the coefficient of heat conduction, chill space (1) and the external environment of chill space (1) and cold-storage area (6)
The coefficient of heat conduction；F1,F2Respectively indicate chill space (1) and cold-storage area (6) heat transfer specific surface area, external environment and chill space (1)
Heat transfer specific surface area；Qh,QxRespectively indicate cargo (9) respiration heat, outside air leakage heat.
3. the prediction technique of haybox cooking phase as described in claim 1, which is characterized in that the incubator unit time
The thermic load total amount Q of generationi, indicate are as follows:
Wherein, K3Indicate cold-storage area (6) and external environment heat transfer coefficient, F3Indicate cold-storage area (6) and external environment heat transfer specific surface
Product.
4. the prediction technique of haybox cooking phase as described in claim 1, which is characterized in that described calculates cargo (9)
Effective soak T, the formula of use are as follows:
Wherein, QzIndicate the initial general refrigeration ability of hold-over plate (5) interior cold-storage material, Ti-1Indicate the haulage time of every batch of cargo (9), n
Indicate that, by transport cargo (9) total batch, i is indicated by transport cargo (9) batch, QkIndicate heat incoming when incubator opens chamber door
Amount.
5. the prediction technique of haybox cooking phase as described in claim 1, which is characterized in that the incubator includes by protecting
Cabinet made of adiabator (2), the cold-storage area (6), chill space (1) are mutually independent two regions in cabinet (2),
In:
The hold-over plate (5) is removable installed in the cold-storage area (6), and cold-storage area (6), chill space (1) pass through back
Air duct (4) is connected.
6. the prediction technique of haybox cooking phase as claimed in claim 5, which is characterized in that the thermal insulation material refer to by
Vacuum heat-insulating plate and polyurethane sheet form Combined thermal insulative panel.
7. the prediction technique of haybox cooking phase as claimed in claim 5, which is characterized in that the two of the air -return duct (4)
End is respectively arranged with blower (3), accelerates the cross-ventilation of cold-storage area (6) and chill space (1), by opening blower (3) to reach
The purpose that temperature is adjusted.
8. the prediction technique of haybox cooking phase as claimed in claim 7, which is characterized in that also set up in the incubator
There are the battery limits (7) for placing control panel, the control panel includes controller, and the blower (3) is connected to control
Device processed, and human-computer interaction interface connected to the controller is provided on heat preservation box outer wall.
9. the prediction technique of haybox cooking phase as described in claim 1, which is characterized in that the cold-storage in the incubator
Temperature sensor (8) are provided with outside area (6), chill space (1) and incubator.
10. the prediction technique of haybox cooking phase as claimed in claim 7, which is characterized in that described to be stored by setting
The temperature of chill space in incubator (1) is adjusted according to setting value for hold-over plate (5) heat convection of cold-zone (6), comprising:
When 1 temperature reaches T1 when chill space, the heat convection that blower (3) accelerate cold-storage area (6) is opened, to chill space (1)
Temperature is adjusted；When the temperature of chill space (1) reaches T2, close blower (3), T1 > T2.
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| CN201811590133.3A CN109850327B (en) | 2018-12-25 | 2018-12-25 | Prediction method for insulation period of insulation can |
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| CN112648785A (en) * | 2019-10-10 | 2021-04-13 | 中车石家庄车辆有限公司 | Method and device for determining released cold quantity and computer equipment |
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| CN114923299A (en) * | 2022-03-15 | 2022-08-19 | 华南农业大学 | Cold storage distribution box based on liquid nitrogen filling and control method thereof |
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| CN109850327B (en) | 2023-06-20 |
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