CN109907353A - Built-in heat storage type heat pump heating plant and method - Google Patents

Built-in heat storage type heat pump heating plant and method Download PDF

Info

Publication number
CN109907353A
CN109907353A CN201910106175.3A CN201910106175A CN109907353A CN 109907353 A CN109907353 A CN 109907353A CN 201910106175 A CN201910106175 A CN 201910106175A CN 109907353 A CN109907353 A CN 109907353A
Authority
CN
China
Prior art keywords
heat storage
heat
air
temperature
heater
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910106175.3A
Other languages
Chinese (zh)
Inventor
艾元方
农倩
石为之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Central South University
Original Assignee
Central South University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Central South University filed Critical Central South University
Priority to CN201910106175.3A priority Critical patent/CN109907353A/en
Publication of CN109907353A publication Critical patent/CN109907353A/en
Pending legal-status Critical Current

Links

Abstract

Built-in heat storage type heat pump heating plant, including heater, blower, heat storage can and heat pump, evaporator with heat pump is placed on outside bulk curing barn hot air chamber front wall, condenser is placed in heat storage can, compressor and heat storage can are placed in hot air chamber, heat storage can, blower is connected with pipeline between any two with heater, heater is hung immediately below hot air chamber crown wall center vent, heater level section side length and ventilation hole aperture are equal, base plate is fixed on hot air chamber side wall inner wall, barn controller controls blower start and stop according to cigarette-filling house center humid air temperature, temperature controller is according to heat storage can air temperature control start/stop of compressor, barn controller sets cigarette-filling house center humid air wet and dry bulb temperature curve by three-stage dense drying requirement, synchronization humid air dry-bulb temperature setting value is lower than 0.5 DEG C~10.0 DEG C of air temperature set point.The present invention can be used in bulk curing tobacco leaves heat supply.Energy conservation and environmental protection of the present invention, accurate temperature control, baking cycle length is unlimited, unattended.

Description

Built-in heat storage type heat pump heating plant and method
Technical field
The present invention relates to a kind of built-in heat storage type heat pumps toasted based on heat pump heat supply, intermediate heat accumulation buffering and indirect heating Heating plant is suitable for agriculture field tobacco business bulk curing tobacco leaves modulating process and uses.
Background technique
China is at present mainly using coal-fired hot-blast stove come baking tobacco leaves.By China's leaf tobacco productions in 2017 of incomplete statistics 22,000,000 mu of annual planting area reckonings, tobacco flue-curing year is about 440 to 5,200,000 tons of standard coals with coal.With baked by using fire coal tobacco leaf Not only coal consumption is huge, but also the burning pollutant discharged has seriously affected flue-cured tobacco area ambient enviroment.Air can be as a kind of honest and clean Valence and widely distributed renewable energy and new energy, it is considered to be the tobacco roasting ideal alternative solution of energy.By air energy section It is applied to flue-cured tobacco intensive baking process with learning, energizes total amount and speed and energy supply rhythm is all satisfied bulk curing tobacco leaves technique and needs It wants, is that the baking of tobacco leaf economical and efficient energy-saving environmental protection safety is crucial to guarantee dry tobacco leaf interior quality.
As shown in Fig. 2, conventional heat pump heating plant includes heat pump and barn controller, and heat pump includes compressor, evaporation Device, capillary and condenser, condenser hanging are arranged in immediately below hot air chamber crown wall center vent.Hot air chamber crown wall mixes Dividing wall between room and hot air chamber, hot air chamber crown wall center open up circular vent, and humid air driving device is fixed on ventilation In hole.Under the effect of humid air driving device, the humid air and extraneous next fresh air that cigarette-filling house comes are mixed in mixing chamber first, are connect Humid air pass through ventilation hole and condenser, then from top to bottom pass through hot air chamber, finally from hot air chamber bottom vent enter Cigarette-filling house.But since compressor is powered after booting delay, the delay of control system for heat pump power on self test and compressor start from cold Solidifying pressure rises to rated value and needs a period of time, is down to 0kPa from condensing pressure after compressor shutdown and is also required to a period of time, dries Roasting heat supply and stop heat supply and there is the phenomenon that lags, cause cigarette-filling house's temperature do not adapt to baking process requirement rise in time or under Drop.Within cigarette-filling house's temperature change period, temperature model of the long duration cigarette-filling house's temperature not required by baking process It encloses.Cigarette-filling house's temperature fluctuation is larger, and baking quality of tobacco is bad, especially cold season, and conventional heat pump barn bakes bad tobacco leaf phenomenon It is more prominent.In order to can control cigarette-filling house's center humid air temperature, dry tobacco leaf baking properties is improved, it is necessary to improve heat pump barn Structure and baking heat source characteristic.
Solve the problems, such as existing heat pump barn can not heating and cooling immediately, be to allow heat pump that can really be used for bulk curing tobacco leaves work The essential step of skill.The timely and energy-efficient built-in heat storage type heat pump heating plant of temperature control is researched and developed, it is existing to help to improve China It is horizontal there is flue-cured tobacco equipment technology, and promotes tobacco business sustainable development.
Summary of the invention
Start heat supply and stopping heat supply in the presence of obviously lagging to solve existing heat pump barn, leads to cigarette-filling house's temperature fluctuation Amplitude is big, is difficult to temperature control, the problems such as baking time extends and dry tobacco leaf quality is without ensureing, the present invention provides a kind of to be supplied based on heat pump It heat, intermediate heat accumulation buffering and lags indirect heating baking technology without heat supply, has that accurate temperature control, baking cycle length be unlimited, nothing The built-in heat storage type heat pump heating plant that people is on duty and three-stage intensive baking process is adaptable.
Built-in heat storage type heat pump heating plant mainly includes heater, blower, heat storage can, heat pump, temperature controller and barn control Device processed, heat pump mainly include compressor, evaporator, capillary and condenser, and evaporator is placed on bulk curing barn hot air chamber front wall Outside, condenser is placed in heat storage can, compressor, and capillary and heat storage can are placed in hot air chamber, compressor and heat storage can weight Amount is supported by hot air chamber ground level, and air intlet and air outlet slit is arranged in heat storage can tank skin, and heat storage can air outlet slit and blower are empty It is connected, is connected between blower air outlet and heater air intlet with pipeline, heater air goes out with pipeline between gas import It being connected between mouth and heat storage can air intlet with pipeline, heater hanging is arranged in immediately below hot air chamber crown wall center vent, Heater is in upright short cube shape, and heater level section side length and hot air chamber crown wall center vent aperture are equal, heater, Blower and heat storage can and its connecting pipe is placed in hot air chamber between any two, base plate is fixed on hot air chamber side wall inner wall On, blower start and stop are controlled by barn controller according to cigarette-filling house center humid air temperature, and start/stop of compressor is by temperature controller according to storage Hot tank air temperature control.
When using built-in heat storage type heat pump heating plant, barn controller is set by three-stage intensive baking process requirement and is filled Smoke-box humid air wet and dry bulb temperature curve, synchronization barn controller cigarette-filling house humid air dry-bulb temperature setting value are consistently lower than Temperature controller heat storage can air temperature set point, synchronization barn controller cigarette-filling house's humid air dry-bulb temperature setting value and temperature control The difference of device heat storage can air temperature set point is between 0.5 DEG C~10.0 DEG C.
Tobacco Processing farage, tobacco planting processing base and tobacco grower cooperative society bulk curing tobacco leaves heat supply place, can make With the present invention.
Economy of the present invention, energy conservation and environmental protection, social benefit are significant.Energy-saving benefit of the present invention is obvious;Heat pump service life extends, Environmental contaminants discharge is zero;It can be used when environment temperature is down to -10 DEG C;It is good to heat controllability, accurate temperature control, cigarette-filling house Humid air temperature change controls within -0.2 DEG C~0 DEG C;There is no limit for baking cycle length;It is on duty without people, without dangerous Hidden danger;It is adapted with three-stage intensive baking process, it will not be because baking bad tobacco leaf for heat problem.
Detailed description of the invention
Fig. 1 is built-in heat storage type heat pump heating plant schematic diagram, and Fig. 2 is conventional heat pump heating plant schematic diagram.Fig. 1 and figure In 2,1 is heater, and 2 be blower, and 3 be heat storage can, and 4 be heat pump, and 41 be compressor, and 42 be evaporator, and 43 be capillary, and 44 are Condenser, 5 be temperature controller, and 6 be barn controller.Pay attention to distinguishing refrigerant, air and humid air word, refrigerant is along " compression Machine → condenser → capillary → evaporator → compressor " path flows, air is along " heat storage can → blower → heater → heat accumulation Tank " path flows, humid air is along " cigarette-filling house → mixing chamber → hot air chamber crown wall center vent → hot air chamber → cigarette-filling house " road Line flowing.
Specific embodiment
The present invention is further explained with reference to the accompanying drawing.
As shown in Fig. 1, built-in heat storage type heat pump heating plant mainly includes heater 1, blower 2, heat storage can 3, heat pump 4, temperature controller 5 and barn controller 6.Heat pump 4 mainly includes compressor 41, evaporator 42, capillary 43 and condenser 44.Evaporation Device 42 is placed on outside bulk curing barn hot air chamber.Condenser 44 is placed in heat storage can 3, compressor 41, capillary 43 and heat storage can 3 It is placed in hot air chamber, 41 weight of compressor and 3 weight of heat storage can are supported by hot air chamber ground level.Heat storage can 3 can be sleeping Formula tank, is also possible to vertical tank.Air intlet and air outlet slit is arranged in 3 tank skin of heat storage can.3 air outlet slit of heat storage can and blower 2 It is connected between air intlet with pipeline, is connected between 1 air intlet of 2 air outlet slit of blower and heater with pipeline, heater 1 is empty It is connected between gas outlet and 3 air intlet of heat storage can with pipeline.Blower 2 is microminiature frequency conversion cross flow fan or centrifugal blower.Add Hot 1 weight of device is supported by hot air chamber crown wall, and heater 1, which can be hung, to be arranged in immediately below hot air chamber crown wall center vent, this When 1 extreme higher position of heater and both the outer extreme lower position of humid air driving device and hot air chamber crown wall between vertical range be 50mm ~100mm, heater 1 can also be fixed on right above hot air chamber crown wall center vent, at this time 1 extreme lower position of heater and wet Vertical range is 50mm~100mm between both air movement device and hot air chamber crown wall are outer extreme higher position.Heater 1 is in upright Short cube shape, hot air chamber crown wall center vent aperture and 1 horizontal cross-section side length of heater are equal, hot air chamber crown wall center and plus Hot 1 horizontal cross-section center of device is on same vertical line.Heater 1, blower 2 and heat storage can 3 and its between any two connecting pipe It is placed in hot air chamber, 3 pedestal of blower is fixed on hot air chamber side wall inner wall.
Temperature controller 5 and barn controller 6 of the present invention are fixed in cigarette-filling house's front wall outside wall surface, at cigarette-filling house's front wall exterior domain In environment temperature, temperature controller 5 and barn controller 6 can be protected to influence from high temperature and keep normal acquisition temperature signal and normal Display.
Bulk curing barn includes cigarette-filling house, hot air chamber and mixing chamber, and on hot air chamber, hot air chamber crown wall mixes mixing chamber Room and hot air chamber dividing wall, hot air chamber width are less than cigarette-filling house's width.Vertical partition wall is set between cigarette-filling house and mixing chamber, this is perpendicular Straight partition wall separates cigarette-filling house and hot air chamber simultaneously.Mixing chamber crown wall is connected with cigarette-filling house's crown wall, hot air chamber ground level and dress cigarette Room ground level is connected.Vertical partition wall top surface is lower than mixing chamber crown wall inner wall certain altitude, vertical partition wall top surface and mixing chamber Space is flowed out for cigarette-filling house's humid air between crown wall inner wall.Cigarette-filling house's humid air stream exports opposite mixing chamber side wall and opens up newly Wind inlet.Vertical partition wall bottom surface is higher by hot air chamber ground level certain altitude, empty between vertical partition wall bottom surface and hot air chamber ground level Between for humid air from hot air chamber flow into cigarette-filling house.Hot air chamber crown wall center opens up circular vent, and humid air driving device is horizontal It is fixed in ventilation hole, ventilation hole aperture of the present invention and 1 horizontal cross-section side length of heater are equal.With downdraft bulk curing barn and add For the hot hanging of device 1 is fixed under hot air chamber crown wall center vent, under the effect of humid air driving device, the wet sky of cigarette-filling house Gas is mixed in mixing chamber and environment fresh air, and humid air all flows vertically through 1 outer surface of tube wall of heater, then flows through heat from top to bottom Air compartment most flows back to cigarette-filling house through vertical partition wall bottom vent afterwards.For 1 heat exchange of heater, humid air walks shell side, from The air that heat storage can 3 flows out walks 1 tube side of heater, and humid air and 1 air of heater carry out square crossing impact type efficient heat transfer, Humid air heats up after heated 1 surface of device heating, 1 air cooling-down of heater.
Compressor 41 of the present invention, capillary 43 and heat storage can 3 are both placed in hot air chamber, and condenser 44 is placed on heat storage can In 3, compressor 41 and 3 weight of heat storage can are supported by hot air chamber ground level.Heat storage can 3 can be added with aluminium, steel or plastics material Work is made, and 3 outside wall surface of heat storage can lays thermal insulating warm-keeping layer.3 heat-carrying agent of heat storage can be air, be also possible to carbon dioxide Or refrigerant gas.Compressor 41 compresses heat release in hot air chamber, and the recycling of natural fabric waste heat increases energy-saving benefit.Heat storage can 3 Outside wall surface is exposed, and Momentum And Kinetic Energy loss is small when humid air high-speed impact 3 outside wall surface of heat storage can.Compressor 41, capillary 43, heat accumulation Tank 3 and blower 2 are both placed in hot air chamber, appearance looks elegant, and are convenient for heating equipment safety management.It is opened up on 3 tank skin of heat storage can The air outlet slit that there is heating air to flow out and for cold air stream into air intlet, sealing is kept at air ports, is not occurred 3 air of heat storage can and hot air chamber humid air string mix phenomenon.Refrigerant inlet and refrigerant outlet are offered on 3 tank skin of heat storage can, Refrigerant import and export keeps sealing, and 3 air of heat storage can does not occur and refrigerant string mixes phenomenon.Hot air chamber side wall offers heat pump 4 tube inlets and export, 4 pipeline of heat pump inlet and outlet remain sealed against only hot air chamber humid air and leak into the external world.
Refrigerant of the present invention flows successively through compressor 41, condenser 44, after capillary 43 and evaporator 42, and flows back to compression Machine 41.The refrigerant that heat pump 4 circulates, which does not leak, flows to environment or heat storage can 3.Air intlet and sky is arranged in 3 tank skin of heat storage can Gas outlet.3 air of heat storage can flows through 3 air outlet slit of heat storage can, 1 air of blower 2 and heater under the driving of blower 2 upwards in turn Import, then 3 air intlet of 1 air outlet slit of heater and heat storage can is successively flowed down through, and flow back to heat storage can 3.In heater 1, The air circulated between blower 2 and heat storage can 3 does not leak the hot air chamber flowed to outside pipeline.Pipeline and 1 air of heater into Mouth junction, 1 air outlet slit junction of pipeline and heater, 2 air intlet junction of pipeline and blower, pipeline and blower 2 are empty Gas outlet connection, 3 air intlet junction of pipeline and heat storage can, 3 air outlet slit junction of pipeline and heat storage can are kept close Envelope, i.e., pipeline air does not occur and leaks into hot air chamber failure.
44 pipeline outer wall face of heater 1 and condenser of the present invention can lay fin, can not also lay fin.Heater 1 horizontal cross-section center and hot air chamber crown wall center are on same vertical line, 1 horizontal cross-section side length of heater and hot air chamber crown wall Center vent aperture is equal, and heater 1 can block hot air chamber crown wall center vent, to guarantee to pass through hot air chamber crown wall center Whole humid air of ventilation hole are heated.Vertical interval between heater 1 and humid air driving device and hot air chamber crown wall 50mm~100mm, it is ensured that do not touched when humid air driving device high-speed rotation and scrape 1 surface of heater.
Temperature controller 5 of the present invention receives 3 air temperature signal of heat storage can, and according to air themperature and setting value comparison result control 41 start-stop of compressor processed.Barn controller 6 receives cigarette-filling house center humid air temperature signal, and according to humid air temperature and setting It is worth comparison result and controls 2 start-stop of blower.Heat storage can 3 connects two passes, wherein a channel is refrigerant circulation passage, along Refrigerant flow direction, refrigerant flow successively through condenser 44, capillary 43, evaporator 42 and compressor 41, finally flow back to cold Condenser 44.According to inverse Carnot's theorem, 44 refrigerant heat release of condenser, 3 air of heat storage can is heated.Setting detection in heat storage can 3 The platinum resistance temperature sensor of air themperature, temperature controller 5 receive air temperature signal, and by air themperature and set temperature interval value Compare.When air themperature is lower than setting value lower limit, 41 power supply of turn on automatically compressor makes compressor 41 open operation, until inciting somebody to action Air is heated to the setting value upper limit, and automatically cutting off 41 power supply of compressor keeps compressor 41 out of service.Vice versa, works as Air Temperature When degree is higher than set temperature, automatically cutting off 41 power supply of compressor keeps compressor 41 out of service, sets until air themperature drops to Definite value lower limit, 41 power supply of turn on automatically compressor make compressor 41 open operation work.When air themperature is lower than the setting value upper limit And when being higher than setting value lower limit, keep 41 power off state of compressor constant.Another channel is air circulation duct.Along Air-flow direction, air flow successively through heat storage can 3, blower 2 and heater 1, finally flow back to heat storage can 3.Cigarette-filling house center is set The platinum resistance temperature sensor of detection cigarette-filling house center humid air temperature is set, barn controller 6 receives humid air temperature signal, and will be wet Air themperature and set temperature interval value compares.When humid air temperature is lower than setting value lower limit, it is instant on 2 power supply of blower Blower 2 is set to open operation, until humid air temperature is heated to the setting value upper limit, cutting off 2 power supply of blower at once stops blower 2 Operation.Vice versa, and when humid air temperature is higher than set temperature, cutting off 2 power supply of blower at once keeps blower 2 out of service, directly Setting value lower limit is dropped to humid air temperature, being instant on 2 power supply of blower makes blower 2 open operation work.When humid air temperature Degree keeps 2 power off state of blower constant lower than the setting value upper limit and when being higher than setting value lower limit.Blower 2 powers off inoperative When, the air intlet and air outlet slit static pressure of heat storage can 3 are equal, and inner air tube is flowed without driving force effect, and air does not flow.
Barn controller 6 of the present invention is the barn controller that generally uses of intensive flue-cured tobacco, 5 structural principle of temperature controller and roasting Room controller 6 can be identical, i.e., temperature controller 5 can be substituted with the barn controller that intensive flue-cured tobacco generally uses.Temperature controller 5 and roasting Room controller 6 is fixed in cigarette-filling house's front wall outside wall surface in environment temperature side by side, no high temperature scaling loss and causes to count because heated Word shows the hidden danger such as abnormal.
Three-stage intensive baking process combination fresh tobacco leaf physiological change, being divided into flavescence, fixation and three stage of scapus slowly rises Temperature, cigarette-filling house's humid air wet and dry bulb temperature gradually rise, and a normal Baking out of standard bulk curing barn continues 6 days~7 days.This Invention barn controller 6 is needed by traditional three-stage intensive baking process requirement setting cigarette-filling house's humid air wet and dry bulb temperature variation Curve, 53 air temperature variations ranges of setting heat storage can of temperature controller, 3 air themperature of heat storage can is set in synchronization temperature controller 5 Definite value is consistently higher than cigarette-filling house's humid air dry-bulb temperature setting value in barn controller 6.Cigarette is filled in synchronization barn controller 6 The difference of air temperature set point is in 0.5 DEG C~10.0 DEG C ranges in room humid air dry-bulb temperature setting value and temperature controller 5.As used When temperature controller 5 and cigarette controller 6,3 air temperature set point of heat storage can is higher by barn controller in small fire yellowing stage temperature controller 5 Cigarette-filling house's humid air dry-bulb temperature setting value difference takes 0.5 DEG C~2.0 DEG C in 6, high fire fixation stage two temperatures setting value difference Less than 10.0 DEG C, the moderate heat scapus stage, two temperatures setting value difference was less than 5.0 DEG C.
3 air temperature set point of heat storage can and cigarette-filling house's humid air dry bulb temperature in barn controller 6 in temperature controller 5 of the present invention Difference is small between degree setting value, limits 1 heat transfer temperature difference of heater, and guarantee is slowly heated cigarette-filling house's humid air, avoids It is rapidly heated, it is final to guarantee dry tobacco leaf baking properties.3 air temperature set point of heat storage can is consistently higher than barn control in temperature controller 5 On the one hand cigarette-filling house's humid air dry-bulb temperature setting value in device 6 processed ensure that heat is transmitted to dress cigarette from 3 air of heat storage can always On the other hand room humid air guarantees have heat transfer to give cigarette-filling house's humid air at any time, avoids being lower than in cigarette-filling house's humid air temperature Continue cooling problem when setting value lower limit, eliminates lagging property of baking heat supply heating.
As shown in Fig. 2, conventional heat pump heating plant includes heat pump 4 and barn controller 6, and heat pump 4 includes compressor 41, Evaporator 42, capillary 43 and condenser 44.Condenser 44 is directly hung immediately below hot air chamber crown wall center vent, condensation The condensation heat that device 44 is released is directly passed to cigarette-filling house's humid air.Barn controller 6 is believed according to cigarette-filling house's center humid air temperature Number directly control 41 start-stop of compressor.When cigarette-filling house's humid air temperature is higher than the setting value upper limit, compressor 41 is out of service, condensation Device 44 cools to rapidly room temperature.When cigarette-filling house's humid air is cooled to setting value lower limit, compressor 41 is powered certainly by control system The normal Baking out of ability after inspection delay, the energization booting delay of compressor 41 and the heating delay of condenser 44.4 control system of heat pump is logical Electric self-test delay (10 seconds~20 seconds), 41 energization protectiveness of compressor booting delay (factory pre-sets are long to 60 seconds) and condenser 44 Heating delay (15 seconds~30 seconds) can only be modified by heat pump manufacturer professional backstage, be to influence baking temperature fluctuation 3 factors, wherein condenser 44 heat up delay it is particularly important.By 4 control system power supply of heat pump independently of 4 power supply of heat pump Outside, i.e., it is individually powered to control system, the control system power on self test time can be removed.41 energization start-up study of compressor, out It is arranged in protection compressor 41 with prolonging the service life.Condensing pressure rises to the rated pressure time after compressor 41 starts, i.e., Condenser heating delay.Heating delay is related with temperature height, hydrofuge intensity, hot blast temperature, and temperature is lower, and hydrofuge load is got over Greatly, hot blast temperature is higher, then is delayed longer.Heat pump manufacturer can adjust the short control system power on self test time and the booting that is powered is prolonged When lag 10 seconds~30 seconds total time to heat supply, but 0 second degree can not be shortened to.Conventional heat pump heating plant actual motion table Bright: cigarette-filling house's humid air temperature fluctuation amplitude is larger (deviateing -2.6 DEG C of setting value~1.1 DEG C), cigarette-filling house's tobacco leaf upper and lower level temperature It is unevenly distributed, front and back non-uniform temperature, effectively toasting efficiency reduces, and baking time extends, and product qualification rate reduces, and easily bakes bad Tobacco leaf.
It is compared with heat pump heat-supply device, present invention tradition heat storage can 3 is an intermediate heat source.The heat source is outwardly discharging Heat absorbs heat from the external world simultaneously, and 41 machine stop times of compressor are reduced, when the 3 heat accumulation heating-up time of heat storage can is longer than heat release cooling Between, it is able to maintain enough quantity of heat storage and quality always.Heat storage can 3 is a temperature-variable heat source.With cigarette-filling house's humid air temperature according to roasting The set baking curve of room controller 6 is slowly synchronous to be increased, and 3 air themperature of heat storage can is according to set by similar barn controller 6 Baking curve slowly increase, 3 air themperature of synchronization heat storage can be higher by always 0.5 DEG C of cigarette-filling house's center humid air temperature~ 10.0℃.Heat storage can 3 is a limited heat.As heat is transmitted to the humid air across heater 1, heat accumulation from heat storage can 3 3 heat accumulation of tank must be reduced, the starting of heat pump 4 operation after a time interval, continuously by " environment's heat+electric energy itself Consume the heat of conversion " it is transferred to heat storage can 3, it is final to maintain 3 heat accumulation total amount of heat storage can constant relatively constant with temperature.This when Between 3 static state quantity of heat storage size of interval length and heat storage can it is related.3 cavity volume of heat storage can is bigger, heat-carrying agent specific heat at constant pressure Bigger, the static quantity of heat storage of heat storage can 3 is more, and time interval is longer between 41 energization heat accumulation of 3 heat release of heat storage can and compressor, And this time interval will be longer than " control system power on self test delay+41 clean boot of compressor delay existing for heat pump 4 The sum of times such as the slowly boosting heat accumulation delay of+condenser 44 ".The present invention uses limited temperature-variable heat source, does not use unlimited heat source, nothing Thermal relief source can only set a temperature, and usage economy of the present invention can be made to be deteriorated.
It is compared with conventional heat pump heating plant, present invention optimizes heat source performances, substitute delay heat with limited temperature-variable heat source Source.3 air heat accumulation of heat storage can of the present invention is directly used in heating cigarette-filling house's humid air, does not have conventional heat pump heating plant " control system Lag the slow boosting heat accumulation of power on self test → 41 clean boot of compressor → condenser 44 of uniting " heat supply baking process, guarantees dress cigarette Room humid air temperature is stablized to be changed at (- 0.2 DEG C~0 DEG C) of set temperature range.
3 air quantity of heat storage controllability of heat storage can of the present invention is good, and regulating measure is more.3 heat-carrying agent specific heat at constant pressure of heat storage can It is stored up in appearance, 3 volume of heat storage can, 2 frequency of blower, 1 pipeline section of heater product, the stretching, extension of 1 pipeline external surface of heater and temperature controller 5 Hot 3 heat-carrying media temperature of tank setting etc., is humid air heating amount and heating speed regulating measure of the present invention.3 heat accumulation of heat storage can Amount depends on 3 heat-carrying agent specific heat capacity of heat storage can, 2 revolving speed of 3 cavity volume of heat storage can and blower, and heat-carrying agent specific heat capacity is bigger (carbon dioxide specific heat ratio air is big), 3 volume of heat storage can is bigger, and 2 frequency of blower is higher, then 3 heat accumulation of heat storage can is more.Heat accumulation 3 volume of tank is bigger, then 3 thermal inertia of heat storage can is bigger.Heat storage can 3 is placed in hot air chamber, and 3 volume of heat storage can is by hot air chamber The limitation of chamber volume, 3 volume of heat storage can be large enough to close to hot air chamber cavity volume degree.1 humid air of heater caloric receptivity and sky Gas velocity, heat transfer area and heat transfer temperature difference are positively correlated.2 frequency of blower improves, and inner air tube flow velocity improves, the sky that blower 2 drives Throughput is bigger.Under same air flow condition, 1 pipeline section of heater product is smaller, and inner air tube speed is bigger.Heater 1 Tube wall outside wall surface lays fin, can increase heat transfer area.3 air temperature set point of heat storage can is adjusted in temperature controller 5, it can be corresponding Adjust 3 air themperature of heat storage can and 1 heat transfer temperature difference of heater.As baking heating time extends, 3 air themperature of heat storage can is from 38 DEG C start, slowly heat up, most 70 DEG C of Zhongdao end.
Heat transfer temperature difference of the present invention is small, big much smaller than caused by coal-fired hot-blast stove or biological particles hot-blast stove changing yellow stage flame Heat transfer temperature difference.Baking terminates, and 3 air sensible of heat storage can (temperature 70 C) is after-heat, fewer than traditional coal-fired hot-blast stove Much.
Energy saving in running rate of the present invention is influenced by environment temperature and locating two factors of stage of baking.Fixation stage fractional energy savings and change The yellow phase is different, and high noon fractional energy savings and late into the night difference, autumn fractional energy savings and summer difference, changing yellow stage, the late into the night and autumn fractional energy savings are most It is low.By taking 4 coefficient of performance 2.5 of heat pump as an example, invention fractional energy savings is more than 71.4%.Present invention operation can retain control system energization 41 clean boot delay time of self-test delay time and compressor, reduce 41 on-off frequency of compressor, 4 runing time of heat pump is more It concentrates, 4 service life of heat pump extends.
The present invention all can be used in updraft type bulk curing barn and downdraft bulk curing barn.Tobacco Processing farage, tobacco planting add Work base and tobacco grower cooperative society bulk curing tobacco leaves, high density dense drying and loose-leaf curing, wisdom are precisely toasted etc. for thermal field Dry baking of the diversified economies crop such as institute and tealeaves, rapeseed, tea seed, day lily, honeysuckle, chrysanthemum and capsicum etc. is for thermal field Institute can use the present invention.
Using showing: energy-saving benefit of the present invention is obvious, meets electric energy alternate country policy needs;Environmental contaminants discharge Zero, reach discharge standard of air pollutants (GB16297) and emission standard of air pollutants for boilers (GB13271) requirement; It can be used when environment temperature is down to -10 DEG C;Accurate temperature control, cigarette-filling house's center humid air temperature change are controlled -0.2 DEG C~0 Within DEG C, meets wisdom and precisely toast heat supply needs;It is close to be able to satisfy 8 days~9 days or more high density without limitation for baking cycle length Collection baking and loose-leaf curing need;It is unattended, phenomena such as high temperature damages blower 2, fire and accidental interruption heat supply will not occur; It is adapted with three-stage intensive baking process, changing yellow stage does not fall temperature, fixation drying muscle stage not overtemperature, dry tobacco leaf hierarchical organization, inherence Quality, presentation quality, sugared alkali ratio and chemical component are more excellent more reasonable.

Claims (3)

1. heat storage type heat pump heating plant built in mainly includes heater, blower, heat storage can, heat pump, temperature controller and barn control Device, heat pump mainly include compressor, evaporator, capillary and condenser, and evaporator is placed on outside bulk curing barn hot air chamber front wall, It is characterized by: condenser is placed in heat storage can, compressor, capillary and heat storage can are placed in hot air chamber, compressor and Heat storage can weight is supported by hot air chamber ground level, and air intlet and air outlet slit, heat storage can air outlet slit is arranged in heat storage can tank skin It is connected between blower air import with pipeline, is connected, heated with pipeline between blower air outlet and heater air intlet It is connected between device air outlet slit and heat storage can air intlet with pipeline, heater hanging is arranged in hot air chamber crown wall center vent Underface, heater are in upright short cube shape, and heater level section side length and hot air chamber crown wall center vent aperture are equal, Heater, blower and heat storage can and its connecting pipe is placed in hot air chamber between any two, base plate is fixed on hot air chamber side Within the walls on wall surface, blower start and stop are controlled by barn controller according to cigarette-filling house center humid air temperature, and start/stop of compressor is by temperature control Device is according to heat storage can air temperature control.
2. when using built-in heat storage type heat pump heating plant described in claim 1, barn controller presses three-stage dense drying Technique requires setting cigarette-filling house's humid air wet and dry bulb temperature curve, synchronization barn controller cigarette-filling house humid air dry-bulb temperature Setting value is consistently lower than temperature controller heat storage can air temperature set point.
3. synchronization barn controller cigarette-filling house as claimed in claim 2 humid air dry-bulb temperature setting value and temperature controller heat accumulation The difference of tank air temperature set point is between 0.5 DEG C~10.0 DEG C.
CN201910106175.3A 2019-02-02 2019-02-02 Built-in heat storage type heat pump heating plant and method Pending CN109907353A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910106175.3A CN109907353A (en) 2019-02-02 2019-02-02 Built-in heat storage type heat pump heating plant and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910106175.3A CN109907353A (en) 2019-02-02 2019-02-02 Built-in heat storage type heat pump heating plant and method

Publications (1)

Publication Number Publication Date
CN109907353A true CN109907353A (en) 2019-06-21

Family

ID=66961343

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910106175.3A Pending CN109907353A (en) 2019-02-02 2019-02-02 Built-in heat storage type heat pump heating plant and method

Country Status (1)

Country Link
CN (1) CN109907353A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008037896A2 (en) * 2006-09-28 2008-04-03 Heliotrans Module usable for heat storage and transfer
CN101711599A (en) * 2009-11-23 2010-05-26 昆明理工大学 Bulk curer heat supply and ventilation system supplied by combined solar energy-air source heat pump double heat sources
CN101862019A (en) * 2010-03-29 2010-10-20 云南省烟草农业科学研究院 Laminated, compact and optimized energy-saving intensive flue-curing barn for flue-cured tobacco
CN101936644A (en) * 2009-09-30 2011-01-05 湖南省浏阳市择明热工器材有限公司 Hot air drying system heated by double energy sources
CN102342579A (en) * 2011-09-30 2012-02-08 四川省烟草公司泸州市公司 Hybrid-power roasting barn
CN203181988U (en) * 2013-04-05 2013-09-11 张华富 Combined type energy-saving device capable of reducing coal consumption of tobacco leaf curing through solar energy and air energy
CN205072057U (en) * 2015-09-24 2016-03-09 云南省烟草公司玉溪市公司 Use heat pump heating's tobacco curing barn air return way

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008037896A2 (en) * 2006-09-28 2008-04-03 Heliotrans Module usable for heat storage and transfer
CN101936644A (en) * 2009-09-30 2011-01-05 湖南省浏阳市择明热工器材有限公司 Hot air drying system heated by double energy sources
CN101711599A (en) * 2009-11-23 2010-05-26 昆明理工大学 Bulk curer heat supply and ventilation system supplied by combined solar energy-air source heat pump double heat sources
CN101862019A (en) * 2010-03-29 2010-10-20 云南省烟草农业科学研究院 Laminated, compact and optimized energy-saving intensive flue-curing barn for flue-cured tobacco
CN102342579A (en) * 2011-09-30 2012-02-08 四川省烟草公司泸州市公司 Hybrid-power roasting barn
CN203181988U (en) * 2013-04-05 2013-09-11 张华富 Combined type energy-saving device capable of reducing coal consumption of tobacco leaf curing through solar energy and air energy
CN205072057U (en) * 2015-09-24 2016-03-09 云南省烟草公司玉溪市公司 Use heat pump heating's tobacco curing barn air return way

Similar Documents

Publication Publication Date Title
CN104019643B (en) With the agricultural product Analysis of Heat Pump Drying System of Waste Heat Recovery
CN103966818B (en) A kind of direct-heating type clothing-drying wardrobe
CN104720089B (en) Closed barn for tobacco flue-curing
CN203443301U (en) Integrated heat pump drying unit for heating and dehumidifying air source and recovering heat
CN203897175U (en) Air source automatic system for controlling withering and baking of white tea
CN203505553U (en) Tobacco roasting room by adopting multiple heat sources
CN204963517U (en) Air source constant temperature and humidity vermicelli stoving heat recovery unit
CN105029655A (en) Energy-saving type garden staff heat pump drying device
CN205561498U (en) Joint hot air drying device of full -automatic high -efficient low temperature dehumidification
CN103471354B (en) Multifunctional subsidiary agricultural product drying chamber
CN106196913A (en) Double source enclosed efficient energy-saving drying system
CN204994577U (en) Energy -saving fruit vegetables heat pump drying device
CN110447943A (en) A kind of method that natural gas direct combustion type heats tobacco flue-curing house and junior tobacco leaf
CN203443291U (en) Integrated high-temperature heat pump drying unit for recovering waste heat of air source
CN103981681A (en) Dual-condenser closed drying wardrobe
CN202973807U (en) Rapid baking and dehumidification heat pump unit
CN202476421U (en) Double heat source drying device applied to tobacco flue-curing
CN104482748B (en) Air source heat pump hot-air fan with combined operating modes
CN204346064U (en) A kind of air-source heat-pump air heater with Combined-operating mode
CN203454627U (en) Multifunctional agricultural and sideline product drying room
CN105433424A (en) Numerical control automatic air energy tobacco leaf curing complete equipment
CN204854071U (en) Two source heat pump vermicelli drying and dehumidification heat recovery units
CN109907353A (en) Built-in heat storage type heat pump heating plant and method
CN109907354A (en) External heat storage type heat pump heating plant and method
CN206001814U (en) Double source closed recovery drying system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20190621