CN208860008U - A kind of heat storage type combined solar energy heat pump drying system - Google Patents
A kind of heat storage type combined solar energy heat pump drying system Download PDFInfo
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Abstract
The utility model relates to the technical fields of desiccant dehumidification equipment, more particularly, to a kind of heat storage type combined solar energy heat pump drying system, including the dry circuit of solar energy heating, the dry circuit of heat storage can heat accumulation and heat pump drying circuit.Based on the utility model is heated with solar energy, supplemented by heat storage can heating, heat pump can continuously and stably complete drying operation under different weather conditions by the switching or joint of a variety of heat supply modes as the auxiliary and standby heat source of the two；The solar energy that daytime has more than needed can be stored in phase change material device to using at night, improve the utilization rate of solar energy, promote the stability of drying system.Auxiliary and standby heat source of the heat pump as the two, only open when the shortages of heat such as rainy days and night, the consumption of electric energy can be greatly reduced；Controller can switch different operational modes according to the Drying Technology Parameter that acquisition system acquires, and can reach the drying process requirement of most of materials, the drying suitable for a variety of heat sensitive materials.
Description
Technical field
The utility model relates to the technical fields of desiccant dehumidification equipment, more particularly, to a kind of heat storage type solar heat
Pump joint drying system.
Background technique
Drying operation is related to the wide range of areas of national economy, is the indispensable process of many industrial trades.In grain, food
During the working process of many industrial products such as product, fruit, tobacco, medicinal material, timber, leather, rubber and ceramics, drying operation
It is very big to the quality and cost impact of product.Drying operation energy consumption is high, and according to incompletely statistics, the energy of global 20%-25% is used for
One of industrialized heat-force dry and the big power consumer in China, the energy used account for 12% or so of national economy total energy consumption.Have
Industry such as paper-making industry, dry consume energy account for the 35% of enterprise's total energy consumption；The drying of wood accounts for the 40%- of woodwork production total energy consumption
70%。
Currently, much the drying temperature demand in industry, agricultural belongs to low temperature drying range at 40~80 DEG C.Dry
During dry, the raising of temperature should be not damage materials quality as principle, especially to certain heat sensitive materials: such as the surface of the seed temperature
Degree does not allow more than 45 DEG C, otherwise will affect germination percentage.During solar energy drying, general drying temperature does not exceed 80
DEG C, be more 60 DEG C or so, such drying temperature to materials such as normal food and agricultural and sideline products all than convenient, and this
When solar thermal collector the thermal efficiency it is also relatively high.Solar energy drying is exactly to be converted into thermal energy using solar energy to be dried, with
Natural drying is compared, it is possible to reduce extraneous factor interference, improve jamming effectiveness, improve the dry mass of material.With use
Traditional energy drying is compared, and solar energy drying can save the use of conventional energy resource, is generated without dust and greenhouse gases, energy conservation
Environmental protection.But single solar energy drying have it is clearly disadvantageous, by round the clock, weather, the conditions such as time influenced big, the course of work
Stability is poor, and dry room temperature, the fluctuation of humidity are larger, it is difficult to realize scheduled drying process.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, and it is dry to provide a kind of heat storage type combined solar energy heat pump
Drying system, by solar thermal collector, heat storage can, heat pump system triplicity, have the function of thermal-arrest, heat accumulation, recuperation of heat three in
The solar energy that daytime has more than needed can be stored in phase-change accumulation energy tank to using at night, promote the company of drying system by the feature of one
Continuous property and stability.
In order to solve the above technical problems, the technical solution adopted in the utility model is:
A kind of heat storage type combined solar energy heat pump drying system, including the dry circuit of solar energy heating, heat storage can storage are provided
Heated drying circuit and heat pump drying circuit:
The dry circuit of the solar energy heating include by sequentially connected first blower of pipeline, solar thermal collector and
Be built-in with the hothouse of material to be dried, the solar thermal collector be equipped with the first air inlet being connect with the first blower and with
First air outlet of hothouse connection；The drying box bottom is equipped with the circulating fan for reinforcing dry indoor air convection,
The hydrofuge mechanism for humid air in hothouse to be discharged is equipped at the top of drying box；
The dry circuit of the heat storage can heat accumulation include by sequentially connected second blower of pipeline, phase change material device and
It is built-in with the hothouse of material to be dried, the phase change material device is equipped with and connect respectively with the first air outlet, the second blower
Second air inlet and the second air outlet being connect respectively with the first blower, hothouse；
The heat pump drying circuit includes dehumidify evaporimeter, evaporator with heat pump, compressor, condenser and expansion valve, institute
State expansion valve inlet end and condenser outlet side connect, the outlet side of expansion valve respectively with the inlet end of dehumidify evaporimeter,
The inlet end of evaporator with heat pump connects；The inlet end of the compressor respectively with the outlet side of dehumidify evaporimeter, evaporator with heat pump
Outlet side connection；The lower section of the dehumidify evaporimeter is equipped with drainage mechanism, the dehumidify evaporimeter, compressor and condenser
It is all set in hothouse, the evaporator with heat pump is set to outside hothouse.
The heat storage type combined solar energy heat pump drying system of the utility model, by solar thermal collector, phase change material device,
Heat pump system three combines, and has the characteristics that three thermal-arrest, heat accumulation, recuperation of heat functions in one, and dehumidify evaporimeter and heat
It pumps evaporator and constitutes double-evaporator heat pump system.Phase change material device is stored up using the solar energy that phase-changing energy storage material has more than needed daytime
Store away night use, auxiliary and standby heat source of the heat pump as the two, only when rainy days and night etc., energy were insufficient
It waits and opens.The heat pump system of the utility model uses double evaporators air source heat pump, and heat pump system is partially submerged into hothouse:
When needing to dehumidify, using the waste heat of the humid air of dehumidify evaporimeter absorption dehydration room discharge, traditional drying is overcome directly will
The humid air of hothouse is discharged to the shortcomings that energy loss is caused in outdoor, improves the Energy Efficiency Ratio of heat pump.The phase needs to improve after the drying
When drying temperature, evaporator with heat pump can be started and further increase dry indoor air themperature.The drying system of the utility model
By the switching or joint of a variety of heat supply modes, drying operation can be continuously and stably completed under different weather conditions, transported
Row is at low cost, and energy-saving effect is significant.
Further, the solar thermal collector is composed in parallel by multiple air duct both ends by header, the air
Channel is composed in series by more solar energy vacuum tubes by thermal insulation casing.The solar energy vacuum tube of the utility model is in lateral cloth
The straight-through vacuum tube set, several straight-through vacuum tubes are cascaded by thermal insulation casing and constitute an air-discharging channel, air
The straight-through type vacuum pipe end at channel both ends is inserted into respectively in the header of two sides, and number air-discharging channel, which is connected in parallel, forms the sun
Can air collector, the quantity of solar energy vacuum tube can be according to actual drying increase in demand in the utility model.
Further, the solar thermal collector sits in the north facing the south setting, and the latitude in solar thermal collector setting location is
The angular range of x, solar thermal collector and horizontal plane is [x-10 °, x+10 °].The tilt angle of solar thermal collector is selected former
Then are as follows: annual in use, inclination angle is consistent with local geographic latitude；Stress summer in use, inclination angle is that local latitude subtracts 10 °
Left and right；When stressing use in winter, inclination angle is that local latitude adds 10 ° or so.
Further, the phase change material device includes phase-change heat storage can and the phase transformation that is filled on the inside of phase-change heat storage can
Energy-storage units, the phase-change energy-storage units are solid-liquid phase change material of the phase transition temperature at 60 DEG C ~ 70 DEG C.Solid-liquid phase change material with
Temperature changes form, and provides latent heat, provides heat source for the dry circuit of heat storage can heat accumulation.
Further, the solid-liquid phase change material is selected from alkane derivative, hydration salt compound, alcohol compound, has
One of machine acid compounds, ester type compound are a variety of.The alkane derivative of the utility model is selected from paraffin (fusing point 60
DEG C ~ 70 DEG C), aromatic hydrocarbon, one or more of aliphatic hydrocarbon (carbon atom number 26 ~ 34, such as positive melissane)；Being hydrated salt compound is
Sodium acetate trihydrate；Alcohol compound is octadecyl alcolol；Organic acid compound be selected from one of hexadecanoic acid, octadecanoid acid or
It is several.But it should be recognized that above-mentioned solid-liquid phase change material is only preferably, be not intended as restriction provision.
Further, several material frames arranged in parallel are equipped with inside the hothouse, the top of the material frame is equipped with
Ventilative partition.
Further, the hydrofuge mechanism includes being set to the axial flow blower above ventilative partition and being set at the top of hothouse
Wet-emitting blower.Axial flow blower, wet-emitting blower, circulating fan, the first blower, the second blower constitute the blower system of the utility model
System, the setting of the first blower and the second blower is so that drying system uses air for heat-transfer working medium, and there is no such as solar heats
In hydrophone water freeze with pressure-bearing problem, and hot-air can be directly entered hothouse and material is dried, not secondary
Heat exchange loss；The setting of axial flow blower, wet-emitting blower, circulating fan can be reinforced drying indoor hot-air and wet stock surface
Mass and heat transfer.First blower and the second blower of the utility model are frequency conversion fan, and the revolving speed of frequency conversion fan can pass through control
Device control processed, so that the control of heat collector outlet air temperature is within the scope of 40 DEG C~100 DEG C.
Further, heat storage type combined solar energy heat pump drying system further includes the valve for controlling and switching each circuit
Control system, the valve control system include controller and the first valve connected to the controller, the second valve, third valve
Door, the 4th valve, the 5th valve, the first triple valve and the second triple valve, first valve connect set on solar thermal collector
It connecing on the main line of hothouse, second valve is set on the main line of solar thermal collector connection phase change material device, and described the
Three valves are set on the main line of the second blower connection phase change material device, and the 4th valve is set to phase change material device connection the
On the main line of one blower, the 5th valve is set on the main line of phase change material device connection hothouse, first triple valve
On the main line that compressor connects dehumidify evaporimeter and evaporator with heat pump, second triple valve is set to expansion valve connection dehumidifying
On the main line of evaporator and evaporator with heat pump.Valve control system respectively and solar thermal collector, heat-storing device, heat pump system phase
Even, by adjusting the size and opening and closing of each valve opening, the operating mode of drying system is converted with this.
Further, heat storage type combined solar energy heat pump drying system further includes the acquisition for monitoring Drying Technology Parameter
System, the acquisition system are connected to the input terminal of controller；The acquisition system includes being set to solar thermal collector exit
The first temperature sensor, set on heat storage can exit second temperature sensor, be set to dry indoor third temperature sensing
Device, set on indoor first humidity sensor of drying, the 4th temperature sensor near condenser, be provided close to dehumidifying steam
It sends out the 5th temperature sensor of device periphery and is provided close to the second humidity sensor of dehumidify evaporimeter periphery.
Compared with prior art, the utility model has the beneficial effects that
(1) the heat storage type combined solar energy heat pump drying system of the utility model, heated with solar energy based on, heat storage can adds
Supplemented by heat, heat pump can be different by the switching or joint of a variety of heat supply modes as the auxiliary and standby heat source of the two
Drying operation is continuously and stably completed under weather conditions, operating cost is low, and energy-saving effect is significant.
(2) solar energy that the heat storage type combined solar energy heat pump drying system of the utility model can have more than needed daytime stores
To using at night in phase change material device, the utilization rate of solar energy is improved, the stability of drying system is promoted.Heat
The auxiliary and standby heat source as the two are pumped, is only opened when the shortages of heat such as rainy days and night, electricity can be greatly reduced
The consumption of energy.
(3) controller of the heat storage type combined solar energy heat pump drying system of the utility model can be acquired according to acquisition system
The Drying Technology Parameter of acquisition switches different operational modes, can reach the drying process requirement of most of materials, be suitable for
The drying of a variety of heat sensitive materials.
(4) heat pump system of the utility model uses double evaporators air source heat pump, and heat pump system is partially submerged into dry
Dry room: when needing to dehumidify, using the waste heat of the humid air of dehumidify evaporimeter absorption dehydration room discharge, overcome traditional drying straight
It connects and the humid air of hothouse is discharged to the shortcomings that energy loss is caused in outdoor, improve the Energy Efficiency Ratio of heat pump；The phase needs after the drying
When improving drying temperature, evaporator with heat pump can be started and further increase dry indoor air themperature.
Detailed description of the invention
Fig. 1 is the schematic diagram of the heat storage type combined solar energy heat pump drying system of embodiment one.
Fig. 2 is the structural schematic diagram of the heat storage type combined solar energy heat pump drying system of embodiment one.
Fig. 3 is the schematic diagram of internal structure of the hothouse of embodiment one.
Fig. 4 is the dry circuit of heat storage can heat accumulation of embodiment one and the schematic diagram in the dry circuit of solar energy heating.
Fig. 5 is hot wind flow schematic diagram in the hothouse of embodiment one.
Fig. 6 is the selection logic chart of the operational mode of the drying system of embodiment two.
In attached drawing: the first blower of 1-；2- solar energy vacuum tube；3- thermal insulation casing；4- header；The first valve of 5-；6- first
Air hose；7- hothouse；8- circulating fan；9- partition；10- material frame；11- axial flow blower；The ventilative partition of 12-；13- draught engine
Structure；14- dehumidify evaporimeter；15- wet-emitting blower；The first triple valve of 16-；17- evaporator with heat pump；18- compressor；19- condenser；
20- expansion valve；The second triple valve of 21-；The second blower of 22-；23- third air hose；24- third valve；The second air hose of 25-；26-
Two valves；27- heat storage can；28- phase-change energy-storage units；The 4th valve of 29-；The 4th air hose of 30-；The 5th valve of 31-；32- the 5th
Air hose；33- acquisition system；34- heat pump drying circuit.
Specific embodiment
The utility model is further described With reference to embodiment.Wherein, being given for example only property of attached drawing
Illustrate, expression is only schematic diagram, rather than pictorial diagram, should not be understood as the limitation to this patent；In order to which this reality is better described
With novel embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent the size of actual product；To ability
For field technique personnel, the omitting of some known structures and their instructions in the attached drawings are understandable.
The same or similar label correspond to the same or similar components in the attached drawing of the utility model embodiment；It is practical at this
In novel description, it is to be understood that if the orientation or positional relationship for having the instructions such as term " on ", "lower", "left", "right" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore retouch in attached drawing
The term for stating positional relationship only for illustration, should not be understood as the limitation to this patent, for the common skill of this field
For art personnel, the concrete meaning of above-mentioned term can be understood as the case may be.
Embodiment one
It is as shown in Figures 1 to 5 the embodiment of the heat storage type combined solar energy heat pump drying system of the utility model, including
Circuit, the dry circuit of heat storage can heat accumulation and heat pump drying circuit 34 are dried in solar energy heating:
The dry circuit of solar energy heating includes by sequentially connected first blower 1 of pipeline, solar thermal collector and interior
Be equipped with the hothouse 7 of material to be dried, solar thermal collector be equipped with the first air inlet being connect with the first blower 1 and with drying
The first air outlet that room 7 connects；Drying box bottom is equipped with the circulating fan 8 for reinforcing 7 inner air convection of hothouse, drying box
Top is equipped with the hydrofuge mechanism for humid air in hothouse 7 to be discharged；
The dry circuit of 27 heat accumulation of heat storage can include by sequentially connected second blower 22 of pipeline, phase change material device and
It is built-in with the hothouse 7 of material to be dried, phase change material device is equipped with the connect respectively with the first air outlet, the second blower 22
Two air inlets and the second air outlet being connect respectively with the first blower 1, hothouse 7；
Heat pump drying circuit 34 includes dehumidify evaporimeter 14, evaporator with heat pump 17, compressor 18, condenser 19 and expansion
The inlet end of valve 20, expansion valve 20 is connect with the outlet side of condenser 19, the outlet side of expansion valve 20 respectively with dehumidify evaporimeter
The inlet end connection of 14 inlet end, evaporator with heat pump 17；The inlet end of compressor 18 outlet with dehumidify evaporimeter 14 respectively
The outlet side connection at end, evaporator with heat pump 17；The lower section of dehumidify evaporimeter 14 is equipped with drainage mechanism 13, dehumidify evaporimeter 14, pressure
Contracting machine 18 and condenser 19 are all set in hothouse 7, and evaporator with heat pump 17 is set to outside hothouse 7.
As shown in Figure 1, Figure 2, Figure 4 shows, solar thermal collector is composed in parallel by multiple air duct both ends by header 4, empty
Gas channel is composed in series by more solar energy vacuum tubes 2 by thermal insulation casing 3；The solar energy vacuum tube 2 of the present embodiment is in laterally
Arrangement, several straight-through vacuum tubes 2 are cascaded by thermal insulation casing 3 and constitute an air-discharging channel, air duct both ends
2 end of straight-through vacuum tube is inserted into respectively in the header 4 of two sides, and number air-discharging channel, which is connected in parallel, forms solar air collection
Hot device, the quantity of solar energy vacuum tube 2 can be according to actual drying increase in demand in the present embodiment.In addition, solar thermal collector is sat
The latitude in location is arranged as x in the setting of Northern Dynasties south, solar thermal collector, and the range of the angle of solar thermal collector and horizontal plane is
[x-10 °, x+10 °].The tilt angle selection principle of solar thermal collector are as follows: annual in use, inclination angle and local geographical latitude
Degree is consistent；Stress summer in use, inclination angle is that local latitude subtracts 10 ° or so；When stressing use in winter, inclination angle is to work as ground weft
Degree adds 10 ° or so.
As shown in Figure 1, phase change material device includes phase-change heat storage can 27 and the phase for being filled in 27 inside of phase-change heat storage can
Become energy-storage units 28, phase-change energy-storage units 28 are solid-liquid phase change material of the phase transition temperature within the scope of 60 DEG C ~ 70 DEG C.Wherein,
Solid-liquid phase change material is selected from alkane derivative, hydration salt compound, alcohol compound, organic acid compound, esters chemical combination
One of object is a variety of.The alkane derivative of the present embodiment is selected from paraffin (60 DEG C ~ 70 DEG C of fusing point), aromatic hydrocarbon, aliphatic hydrocarbon
One or more of (carbon atom number 26 ~ 34, such as positive melissane)；Hydration salt compound is sodium acetate trihydrate；Alcohols chemical combination
Object is octadecyl alcolol；Organic acid compound is selected from one or more of hexadecanoic acid, octadecanoid acid.But it should be recognized that
Above-mentioned solid-liquid phase change material is only preferably, and not as restriction provision.
As shown in figure 3, being equipped with several material frames 10 arranged in parallel inside hothouse 7, the top of material frame 10 is equipped with saturating
The two sides of wind partition 12, material frame are equipped with partition 9.As shown in Figure 1, hydrofuge mechanism includes the axis stream set on ventilative 12 top of partition
Blower 11 and the wet-emitting blower 15 at the top of hothouse 7.The first blower 1 and the second blower 22 in the present embodiment are to become
The revolving speed of frequency blower, frequency conversion fan can be controlled by controller, so that the control of heat collector outlet air temperature is at 40 DEG C~100 DEG C
In range；Axial flow blower 11 and wet-emitting blower 15 can reinforce the hot-air in hothouse 7 and the Mass and heat transfer on wet stock surface,
Hot wind flow direction in hothouse 7 is as shown in Figure 5.
As shown in Figure 1, drying system further includes the valve control system for controlling and switching each circuit, valve control system
System includes controller and the first valve 5 connected to the controller, the second valve 26, third valve 24, the 4th valve the 29, the 5th
Valve 31, the first triple valve 16 and the second triple valve 21；The first air hose 6 is connected between solar thermal collector and hothouse 7,
It is connected with the second air hose 25 between the air inlet and solar thermal collector of heat storage can 27, connects between the second blower 22 and heat storage can 27
It is connected to third air hose 23, the 4th air hose 30, the outlet air of heat storage can 27 are connected between the air outlet of heat storage can 27 and the first blower 1
Mouthful the 5th air hose 32 is connected between hothouse 7, the first air hose 6 is arranged in close to the right side of the second air hose 25 in the first valve 5,
Second valve 26 is arranged on the second air hose 25, and the left side on third air hose 23 close to the second air hose 25 is arranged in third valve 24
Position, the 4th valve 29 are arranged on the 4th air hose 30, and the 5th valve 31 is arranged on the 5th air hose 32.
As shown in Figure 1, drying system further includes the acquisition system 33 for monitoring Drying Technology Parameter, acquisition system 33 connects
It is connected to the input terminal of controller；Acquisition system 33 includes the first temperature sensor for being set to solar thermal collector exit, is set to
The second temperature sensor in 27 exit of heat storage can, the third temperature sensor in hothouse 7, in hothouse 7
First humidity sensor, the 4th temperature sensor near condenser 19, be provided close to 14 periphery of dehumidify evaporimeter
Five temperature sensors and the second humidity sensor for being provided close to 14 periphery of dehumidify evaporimeter.
The present embodiment is followed the steps below when implementing:
S1. start drying system, set by Drying Technology Parameter of the controller to material；The drying process
Parameter include solar thermal collector outlet air temperature, heat storage can outlet air temperature, dry room air mean temperature and
Humidity, condenser ambient air temperature and dehumidify evaporimeter ambient air temperature and humidity；
S2. controller analyzes the collected data of acquisition system, and controls each valve by valve control system
State select different operational modes, the operational mode includes that the independent drying mode of solar energy, heat storage can are individually dried
The independent drying mode of mode, heat pump, solar energy-heat pump combined drying mode, the heat pump united drying mode of heat storage can-；
S3. drying terminates, and takes out dry products, is put into next batch materials and operation is dried.
Controller is according to the temperature of inputted drying process, humidity and time needed for each stage, in conjunction with acquisition system 33
Collected data carry out selecting optimal drying mode.The drying mode of the present embodiment and dehumidifying selection logic are as follows: on daytime,
Morning, selection operation solar energy independent drying mode was wet in hothouse 7 when heat collector outlet air temperature is at 35 DEG C~45 DEG C
When degree reaches the top limit of humidity of drying stage setting, starting wet-emitting blower 15 carries out hydrofuge, is at this time the dry shape of solar energy heating
State；When solar thermal collector outlet temperature is higher than setting drying temperature, solar energy heat-collecting heat-storage drying regime is selected；It is cloudy and
When rainy weather select solar energy-heat pump combined drying mode, when in hothouse 7 when the temperature is excessively high, pass through adjust the first blower 1
The exhaust of revolving speed and wet-emitting blower 15 carry out cooling control；At night, when heat storage can 27 was the case where carrying out energy storage daytime
Under, selection runs the independent drying mode of heat storage can 27, when humidity reaches the top limit of humidity of drying stage setting in hothouse 7, opens
Dynamic wet-emitting blower 15；When drying temperature requirement is not achieved in 27 outlet temperature of heat storage can, the heat pump united drying of heat storage can 27- is selected
Mode；When encountering continuous rainy weather, the independent drying mode of heat pump is selected, when mainly needing to dehumidify to drying, refrigerant
Cycle operation is carried out into dehumidify evaporimeter 14；When needing higher drying temperature, refrigerant enter evaporator with heat pump 17 into
Row cycle operation.Specific regulative mode is as follows:
The independent drying mode of solar energy is suitable for the good situation of weather on daytime, it includes solar energy heating drying and the sun
The dry two kinds of working conditions of energy heat-collecting heat-storage, concrete operations are as follows:
One, the first valve 5 is opened, other valves are in close state；Two, start the first blower 1, hot-air is sent into dry
Dry interior；Three, circulating fan 8 in hothouse is opened, the cross-ventilation in hothouse 7 is reinforced, hot-air and wet stock carry out heat
Matter transmitting, the heated vaporization of wet stock moisture rise air humidity in hothouse 7 persistently, are kept for a period of time into air, when
When humidity reaches early warning value in hothouse 7, starts axial flow blower 11 and wet-emitting blower 15 in hothouse 7, humid air is discharged to
It is at this time the dry working condition of solar energy heating in environment；When air themperature reaches preset drying process temperature in hothouse 7
When spending, the second valve 26, the aperture of the 4th valve 29, while the first valve of appropriate reduction are opened and adjusted by valve control system
The aperture of door 5, recycles partial air in heat collector-heat storage can, when heat storage can outlet air temperature reaches preset
When drying process temperature, the second valve 26 is fully opened, the 5th valve 31 closes the first valve 5, and the 4th valve 29 will be hot empty
Pneumatic transmission enters hothouse 7, and dry room temperature is controlled by adjusting the exhaust of the revolving speed and wet-emitting blower 15 of the first blower 1,
It is at this time the dry working condition of solar energy heat-collecting heat-storage.
The independent drying mode of heat storage can is suitable for the case where carrying out energy storage heat storage can daytime, concrete operations are as follows:
One, third valve 24, the 5th valve 31 are opened, the first valve 5, the second valve 26, the 4th valve 29 are closed；Two,
Start the second blower 22, surrounding air is sent in heat storage can 27 by third air hose 23 by the second blower 22 and is heated, and is heated
Hot-air afterwards is admitted in hothouse 7；Three, circulating fan 8 in hothouse 7 is opened, the cross-ventilation in hothouse 7 is reinforced,
Hot-air and wet stock carry out Mass and heat transfer, and the heated vaporization of wet stock moisture makes air humidity liter in hothouse 7 into air
It is high；Four, when humidity reaches early warning humidity value in hothouse 7, opening axial flow blower 11, wet-emitting blower 15 will be wet in hothouse 7
Air is discharged in ambient atmosphere.
The independent heat supply mode of heat pump is suitable for continuous rainy days and evening heat storage can temperature to reach drying operation and wanting
Situations such as asking, it has removal moisture drying and the dry two kinds of working conditions that heat up:
When needing to dehumidify, dehumidify evaporimeter 14 is run, the steps include: one, using the cold air in hothouse 7 as low temperature
Heat source passes through the air in heat pump cycle work dry kiln 7；Two, start circulating fan 8, axial flow blower 11, circulating fan
Hot-air in Final 8's hothouse 7 circulates, successively by circulating fan 8, material frame 10 in hothouse, ventilative partition 12,
Axial flow blower 11, dehumidify evaporimeter 14, condenser 19, circulating fan 8, to complete the mistake of a heat pump cycle removal moisture drying
Journey.Wherein, hot-air is sent to dry section heating wet stock by circulating fan 8, while taking away the water being evaporated from wet stock
Point, so that hot-air humidity, which gradually increases, becomes humid air, humid air is absorbed heat on 14 surface of dehumidify evaporimeter of heat pump system
Dew-point temperature is cooled to hereinafter, water droplet can be precipitated in 14 outer wall of dehumidify evaporimeter at this time, through 13 row of drainage mechanism after water droplet convergence
Hothouse 7 out, to complete dehumidification process.If humidity is too big in hothouse 7, when hydrofuge task is overweight, start wet-emitting blower 15
Force discharge part humid air.
When material needs higher drying temperature, evaporator with heat pump 17 is run, the steps include: one, with external environment sky
Gas passes through the air in heat pump cycle work heat drying room as low-temperature heat source；Two, start circulating fan 8, wet-emitting blower
15, axial flow blower 11, the hot-air flowing in circulating fan Final 8 hothouse 7, successively pass through circulating fan 8, dry section material
Frame 10, ventilative partition 12, axial flow blower 11, dehumidify evaporimeter 14, condenser 19, circulating fan 8, humid air passes through wet-emitting blower
15 discharge hothouses 7.
Solar energy-heat pump joint drying system mode, this mode equivalent are independent in the independent drying mode of solar energy and heat pump
The joint of removal moisture drying both modes, suitable for the weaker situations of solar radiations such as cloudy, cloudy and dusk, specific working mode
Are as follows: the first valve 5 is opened, closes the second valve 26, third valve 24, the 4th valve 29, the 5th valve 31, cold air is by first
Blower 1 is sent into solar thermal collector and is heated, and the hot-air after being heated is directly entered in hothouse 7 and does to material
It is dry.Meanwhile heat-pump dehumidification drying system starts, and using the cold air in hothouse 7 as low-temperature heat source, is worked by heat pump cycle
Air in heat drying room.Circulating fan 8, axial flow blower 11 are opened, the hot-air in force drying room 7 circulates, empty
Gas successively passes through circulating fan 8, dry section material frame 10, ventilative partition 12, axial flow blower 11, dehumidify evaporimeter 14, condenser
19, circulating fan 8, to complete the process of a heat pump cycle removal moisture drying.Humid air is inhaled on 14 surface of dehumidify evaporimeter
Heat cools to dew-point temperature hereinafter, water droplet can be precipitated in evaporator outer wall at this time, is discharged after water droplet convergence through drainage mechanism 13 dry
Dry room 7；Period when dehumidifying task is overweight, forces discharge part wet when dry indoor humidity is too big by starting wet-emitting blower 15
Air；When the temperature is excessively high, the exhaust of revolving speed and wet-emitting blower 15 by adjusting the first blower 1 carries out cooling control in hothouse
System.
The heat pump united drying system mode of heat storage can-, this mode equivalent are independent in the independent drying mode of solar energy and heat pump
The joint of removal moisture drying both modes, it is lower suitable for heat storage can leaving air temp, the case where drying task cannot be individually completed,
Specific working mode are as follows: third valve 24, the 5th valve 31 are opened, the first valve 5, the second valve 26, the 4th valve 29 are closed,
Start the second blower 22, ambient, cool air, which is entered in heat storage can 27 by the second blower 22 by third air hose 23, to be heated, and is added
Hot-air after heat is directly entered in hothouse 7 and wet stock is dried.Meanwhile heat-pump dehumidification drying is also started to work, and is done
Air in dry room 7 is sent to dry section material frame 10 by circulating fan 8 after the heating of condenser 20 and wet stock carries out caloic biography
Pass, hot-air humidity, which gradually rises, becomes humid air, humid air at dehumidify evaporimeter 14 by heat absorption condensation water droplet after become
For cold dry air, hothouse 7 is discharged by drainage mechanism 13 after water droplet convergence, cold dry air when condenser 19 by being added
Heat, hot-air is sent in hothouse 7 by circulating fan 8 carries out Mass and heat transfer between wet stock again after heating, to complete one
A drying cycles.Period passes through starting wet-emitting blower Final 8 system discharge when humidity is too big in hothouse 7, and dehumidifying task is overweight
Partial HAT；When in hothouse 7 when the temperature is excessively high, by adjust the second blower 22 revolving speed and wet-emitting blower 15 exhaust into
Row cooling control.
The present embodiment is further described with the drying process of mushroom.The moisture content of fresh mushroom is up to 90% or more, and
The drying process of mushroom, which requires to have to pass through three phases, to last the continuous drying of 16-18h and could complete to dry overall process, dries
Rate preferably controls between (8~10) %/h, finally moisture content is made to drop to 15% or less.First stage 35-40 DEG C low temperature and
Dry 6h, is uniformly evaporated moisture from outward appearance to inner essence, mushroom side uniform shrinkage forms good mushroom under 60%~70% damp condition
Type.Second stage continues dry 5~6h under the conditions of 50~55 DEG C of temperature and humidity 40%~50%, evaporates material moisture.The
Three stages must 60~65 DEG C and 30%~40% damp condition under dry 5h, so that moisture content is reduced to 15%(butt) hereinafter,
Internal aroma substance is evaporated, to have the distinctive fragrance of mushroom.In the drying process, each stage institute
The temperature that need to be maintained, humidity, time all should strict controls.Specific regulative mode is as follows:
Control system is according to the temperature of inputted drying process, humidity and time needed for each stage, combined data acquisition
The collected data of system 33 carry out selecting optimal drying mode.Its drying mode and dehumidifying selection logic are as follows: on daytime, early
Morning, selection ran the independent drying mode of solar energy, dry indoor humidity when heat collector outlet air temperature is at 35 DEG C~45 DEG C
When reaching top limit of humidity (55%/50%/40%) of drying stage setting, it is at this time solar energy that starting wet-emitting blower 15, which carries out hydrofuge,
Thermal-arrest drying regime；When solar thermal collector outlet temperature is higher than setting drying temperature, select solar energy heat-collecting heat-storage dry
State；Solar energy-heat pump combined drying mode is selected when cloudy and rainy weather, when the temperature is excessively high, passing through tune in hothouse 7
The exhaust for saving the revolving speed and wet-emitting blower 15 of the first blower 1 carries out cooling control；At night, when heat storage can 27 carried out on daytime
In the case where energy storage, selection runs the independent drying mode of heat storage can, and humidity reaches in the humidity of drying stage setting in hothouse 7
When limiting (55%/50%/40%), start wet-emitting blower 15；When 27 outlet temperature of heat storage can be not achieved drying temperature requirement (35 DEG C~
65 DEG C) when, select the heat pump united drying mode of heat storage can-；When encountering continuous rainy weather, the independent drying mould of heat pump is selected
Formula, when mainly needing to dehumidify to drying, refrigerant enters dehumidify evaporimeter 14 and carries out cycle operation；It is higher dry warm when needing
When spending, refrigerant enters evaporator with heat pump 17 and carries out cycle operation.
Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in
Within the protection scope of the utility model claims.
Claims (9)
1. a kind of heat storage type combined solar energy heat pump drying system, which is characterized in that including solar energy heating dry circuit, heat accumulation
The dry circuit of tank heat accumulation and heat pump drying circuit:
The dry circuit of the solar energy heating includes by sequentially connected first blower of pipeline, solar thermal collector and built-in
Have a hothouse of material to be dried, the solar thermal collector be equipped with the first air inlet being connect with the first blower and with drying
First air outlet of room connection；The hothouse bottom is equipped with the circulating fan for reinforcing dry indoor air convection, dry
Box top is equipped with the hydrofuge mechanism for humid air in hothouse to be discharged；
The dry circuit of the heat storage can heat accumulation includes by sequentially connected second blower of pipeline, phase change material device and built-in
There is the hothouse of material to be dried, the phase change material device is equipped with second connect respectively with the first air outlet, the second blower
Air inlet and the second air outlet being connect respectively with the first blower, hothouse；
The heat pump drying circuit includes dehumidify evaporimeter, evaporator with heat pump, compressor, condenser and expansion valve, described swollen
The outlet side of the inlet end of swollen valve and condenser connects, the outlet side of expansion valve respectively with the inlet end of dehumidify evaporimeter, heat pump
The inlet end of evaporator connects；The inlet end of the compressor respectively with the outlet side of dehumidify evaporimeter, evaporator with heat pump go out
The connection of gas end；The lower section of the dehumidify evaporimeter is equipped with drainage mechanism, and the dehumidify evaporimeter, compressor and condenser are all provided with
It is placed in hothouse, the evaporator with heat pump is set to outside hothouse.
2. heat storage type combined solar energy heat pump drying system according to claim 1, which is characterized in that the solar energy collection
Hot device is composed in parallel by multiple air duct both ends by header, and the air duct passes through heat preservation by more solar energy vacuum tubes
Casing is composed in series.
3. heat storage type combined solar energy heat pump drying system according to claim 2, which is characterized in that the solar energy collection
Hot device sits in the north facing the south setting, and the latitude that location is arranged in solar thermal collector is x, the angle of solar thermal collector and horizontal plane
Range is [x-10 °, x+10 °].
4. heat storage type combined solar energy heat pump drying system according to claim 1, which is characterized in that the phase-change thermal storage
Device includes phase-change heat storage can and the phase-change energy-storage units that are filled on the inside of phase-change heat storage can, and the phase-change energy-storage units are phase
Solid-liquid phase change material of the temperature at 60 DEG C ~ 70 DEG C.
5. heat storage type combined solar energy heat pump drying system according to claim 4, which is characterized in that the solid-liquid phase
Become material in alkane derivative, hydration salt compound, alcohol compound, organic acid compound, ester type compound
It is one or more.
6. heat storage type combined solar energy heat pump drying system according to claim 1, which is characterized in that in the hothouse
Portion is equipped with several material frames arranged in parallel, and the top of the material frame is equipped with ventilative partition.
7. heat storage type combined solar energy heat pump drying system according to claim 1, which is characterized in that the hydrofuge mechanism
Axial flow blower including being set to above ventilative partition and the wet-emitting blower at the top of hothouse.
8. heat storage type combined solar energy heat pump drying system according to any one of claims 1 to 7, which is characterized in that also
Including the valve control system for controlling and switching each circuit, the valve control system includes controller and and controller
The first valve, the second valve, third valve, the 4th valve, the 5th valve, the first triple valve and the second triple valve of connection,
First valve is set on the main line of solar thermal collector connection hothouse, and second valve connects set on solar thermal collector
It connects on the main line of phase change material device, the third valve is set on the main line of the second blower connection phase change material device, described
4th valve is set to phase change material device and connects on the main line of the first blower, and the 5th valve is connected set on phase change material device
On the main line of hothouse, first triple valve is set on the main line of compressor connection dehumidify evaporimeter and evaporator with heat pump, institute
The second triple valve is stated on the main line of expansion valve connection dehumidify evaporimeter and evaporator with heat pump.
9. heat storage type combined solar energy heat pump drying system according to claim 8, which is characterized in that further include for supervising
The acquisition system of Drying Technology Parameter is surveyed, the acquisition system is connected to the input terminal of controller；The acquisition system includes setting
The first temperature sensor in solar thermal collector exit, the second temperature sensor set on heat storage can exit are set to and do
Dry indoor third temperature sensor, set on indoor first humidity sensor of drying, the 4th temperature near condenser
Sensor, the 5th temperature sensor for being provided close to dehumidify evaporimeter periphery and it is provided close to the second of dehumidify evaporimeter periphery
Humidity sensor.
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| CN201821155873.XU CN208860008U (en) | 2018-07-20 | 2018-07-20 | A kind of heat storage type combined solar energy heat pump drying system |
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| CN201821155873.XU CN208860008U (en) | 2018-07-20 | 2018-07-20 | A kind of heat storage type combined solar energy heat pump drying system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059442A (en) * | 2018-07-20 | 2018-12-21 | 广东工业大学 | A kind of heat storage type combined solar energy heat pump drying system and method |
| CN110145901A (en) * | 2019-05-30 | 2019-08-20 | 西安科技大学 | A kind of solar-assisted heat pump drying system |
| CN110506787A (en) * | 2019-08-01 | 2019-11-29 | 农业农村部规划设计研究院 | The solar energy drying method of "Hami" melon |
| CN115152838A (en) * | 2022-07-01 | 2022-10-11 | 扬州大学 | Self-powered grain drying device integrating biomass and solar energy |
-
2018
- 2018-07-20 CN CN201821155873.XU patent/CN208860008U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059442A (en) * | 2018-07-20 | 2018-12-21 | 广东工业大学 | A kind of heat storage type combined solar energy heat pump drying system and method |
| CN109059442B (en) * | 2018-07-20 | 2023-10-24 | 广东工业大学 | Heat storage type solar heat pump combined drying method |
| CN110145901A (en) * | 2019-05-30 | 2019-08-20 | 西安科技大学 | A kind of solar-assisted heat pump drying system |
| CN110506787A (en) * | 2019-08-01 | 2019-11-29 | 农业农村部规划设计研究院 | The solar energy drying method of "Hami" melon |
| CN115152838A (en) * | 2022-07-01 | 2022-10-11 | 扬州大学 | Self-powered grain drying device integrating biomass and solar energy |
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