WO2009011607A2 - Système d'énergie pour sécher des produits humides - Google Patents

Système d'énergie pour sécher des produits humides Download PDF

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Publication number
WO2009011607A2
WO2009011607A2 PCT/RS2008/000024 RS2008000024W WO2009011607A2 WO 2009011607 A2 WO2009011607 A2 WO 2009011607A2 RS 2008000024 W RS2008000024 W RS 2008000024W WO 2009011607 A2 WO2009011607 A2 WO 2009011607A2
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WO
WIPO (PCT)
Prior art keywords
air
temperature
energy
water
moist
Prior art date
Application number
PCT/RS2008/000024
Other languages
English (en)
Other versions
WO2009011607A3 (fr
Inventor
Pane Kondic
Original Assignee
Pane Kondic
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 Pane Kondic filed Critical Pane Kondic
Priority to CN2008800233818A priority Critical patent/CN101796361B/zh
Publication of WO2009011607A2 publication Critical patent/WO2009011607A2/fr
Publication of WO2009011607A3 publication Critical patent/WO2009011607A3/fr
Priority to HRP20090682AA priority patent/HRP20090682B1/hr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/001—Heating arrangements using waste heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06—Chambers, containers, or receptacles
    • F26B25/08—Parts thereof
    • F26B25/10—Floors, roofs, or bottoms; False bottoms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S90/00—Solar heat systems not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • the invention belongs to agricultural field, and relates to the drying of moist products, particularly to the drying of tobacco.
  • IPC international patent classification
  • the reference number is F26B 23/00 and A24B 1/02.
  • the invention solves the problem of: reliable and efficient system for moist products drying, particularly tobacco, by the heat sources lower than 100 0 C; reducing energy consumption by using available installed energy sources; continuous supply of energy to hot water to air heat exchanger and maintaining the drying air temperature at a set value by electromotor three-way three-position control valve which works a three point hitch controlled by temperature transmitter and digital regulator / indicator; harnessing the energy from moist air, which comes out of the drying system into the environment, by energy recovery; heating the moist air by hot water to air heat exchanger, solar energy, air to water high temperature heat pump and hot-water boier; continuous maintaining of moist air relative humidity at a set value controlled by moisture transmitter and digital regulator / indicator; maintaining the necessary air flow volume by regulating the number of ventilator's motor revolutions by frequency regulator; moistening of dried tobacco with water steam.
  • Curing barn for tobacco drying consists of a chamber in which tobacco is threaded and packed in racks or in containers, and of a chamber in which thermogen which heats the moist air is installed.
  • thermogen which heats the moist air is installed.
  • the heat exchanger In the upper part of thermogen the heat exchanger is installed in which the fuel combustion is performed and in which moist air is heated.
  • the maintaining of dryer's air temperature at a set value is performed by occasional switching-on of fuel combustion in heat exchanger.
  • the radial ventilator is installed in thermogen and it performs forcible circulation of drying and moist air and suction of fresh air.
  • Tobacco is dried by bringing dry air to the chamber for tobacco drying during which the volume of moisture in tobacco is reduced, and humidify of drying air which becomes moist air is increased.
  • the basic parameters are: temperature, relative air humidity in the area where tobacco is dried, the volume of drying air which forcibly circulates between tobacco leaves, and fame of maintaining set temperature and humidify.
  • Tobacco drying is performed both in the phase when moisture is not removed and in the phase when moisture is removed from the chamber where tobacco is dried.
  • the yellowing of tobacco is performed and it lasts for 36 to 72 hours depending on tobacco ripeness and leaf position on the tobacco stem.
  • the fixation of leaf color, the drying of tobacco leaf and tobacco stalk are performed and that lasts for 3 to 4 days.
  • the initial temperature of drying air is set between 30 0 C and 37°C
  • final temperature of drying air is set between 37°C and 42 0 C and relative humidity is up to 90% with great re-circulation of drying air.
  • the initial temperature of drying air is established on the basis of the final temperature of drying air in the phase when the moist air is not removed, the final temperature of drying air is 74°C and relative humidity is between 18% and 11%, with increased taking away of moist air into the environment.
  • the air in the dryer re- circulates, and when it passes over burnt gasses to moist air heat exchanger, the moist air is heated and becomes drying air.
  • one part of moist air re- circulates, the other partis taken out into the environment from the chamber for tobacco drying over swinging jalousies and the same volume of dry air is brought in from the environment through jalousies installed on thermogen, and it is mixed with re-circulating air.
  • the mixed dry and moist air is heated by passing over burnt gasses to moist air heat exchanger and it becomes drying air.
  • the regulation of moisture is performed by adjustable jalousies installed on thermogen, and the control of moisture in the chamber for tobacco drying is performed by psychrometer.
  • the regulation of the air flow volume is preformed by adjusting the jalousies which are installed in thermogen.
  • the tube with nozzles for water spraying for tobacco moistening is installed in thermogen above heat exchanger.
  • the tobacco Upon the drying, the tobacco is moistened with water, which is, under the pressure by using nozzles, injected into re-circulating air in the form of water mist. It is necessary to moisten tobacco because dried tobacco is breakable and is not suitable for transportation and further processing.
  • the dryers' producers produce dryers under the name tobacco curing barns and they deliver them to tobacco producers for tobacco drying.
  • the dryer consists of a chamber in which picked tobacco for drying which is threaded and packed in racks or containers is placed, and of a chamber in which thermogen is installed.
  • the heat exchanger in which fuel is burnt is installed in thermogen, and heat exchanger heals the moist air which becomes drying air.
  • These dryers use heating oil or natural gas as fuel.
  • Tobacco producers have drying technologies which are applied for tobaccos of different ripeness and the position of picked leaf from tobacco stalk.
  • the utilization of energy in these dryers is 65% to 70%.
  • the heating and maintaining of set temperature of drying air is performed with breaks in fuel burning.
  • the drawing of energy for heating of moist air is performed in intervals; the temperature of drying air is not even which has a negative effect on biochemical processes in a tobacco leaf.
  • the temperatures of fuel burning in heat exchanger are high. High temperatures in heat exchanger cause deformations of sheet metal at joints as a consequence of turning the heating of moist air on and off which effects the operating life of exchanger, in the phase when moisture is removed, part of moist air is as waste taken away into environment from the chamber for tobacco drying over suspended jalousies and is returnlessly taking energy into environment.
  • the regulation of fresh air supply is performed manually by jalousies.
  • the control of moisture is performed by psychrometer.
  • the regulation of air flow volume is performed manually by jalousies.
  • the moistening of tobacco by spraying water through nozzles is inefficient because water drops are settled on tobacco leaves and they change the color of tobacco leaf on
  • the invention is efficient power system, which is placed in the chamber which is integral part of dryer, by which moist products, particularly tobacco, are dried.
  • the dryer also has a chamber in which tobacco is placed which wll be dried threaded and packed in racks or containers.
  • the air in the dryer re-circulates, it is heated by passing through hot water to air heat exchanger and it becomes drying air.
  • the phase when moisture is removed part of moist air re-circulates, another part is taken into environment and dry air from the environment is taken in the same amount.
  • the system passes the energy of moist air, which is taken out into environment, on to the dry air by air to air plate heat exchangers.
  • the remaining energy in moist air is exchanged again by air to water heat exchanger and hot water to air heat exchangers and passed on to the dry air from the environment, before entering into air to air plate heat exchangers.
  • the energy sources are solar energy, air to water high temperature heat pump and hot-water boier. With this system one of available energy sources for drying which has at disposal sufficient energy amount and potential can be chosen in all phases of drying, by using differential thermostats and electromotor three-way control valves.
  • the re-circulating of hot water and continuous taking in of the necessary energy for the hot water to air heat exchanger, in order to maintain the temperature of drying air at a set value, is performed by the electromotor three-way three-position conlrol valve, which works a three point hitch.
  • the digital regulator / indicator with moisture transmitter by using reversble electromotor and threaded spindle, regulates the distance between movable plates and maintains the necessary volume of relative humidity in the drying chamber.
  • the essence of this system is the heating of dry air with moist air's recovered energy, tobacco drying by using the most economic, installed source of energy which has at disposal necessary energy, continuous taking in of the energy for the drying air for drying, the maintaining of temperature and moisture at a set value during the tobacco drying, the maintaining of necessary air flow volume by using electronic regulation of numbers of ventilator's electromotor revolutions, the moistening of dried tobacco with over-heated water steam after the drying.
  • the solar energy carried on to solar collectors is transmitted into heat accumulator and taken away to hot water to air heat exchanger for the heating of moist air and drying of tobacco.
  • Air to water high temperature heat pump, at the time when moist product is not dried, can be used for the heating of sanitary water and for low- temperature heating of housing and office premises.
  • Hot-water boiler which is installed outside the dryer for moist products drying, can be used for the heating of sanitary water, housing and office premises during winter.
  • Drawing 1 shows side-view at the chamber in which energy system equipment is installed.
  • Drawing 2 - shows frontal view at the chamber in which energy system equipment is installed and the position of solar collectors.
  • Drawing 3 - shows horizontal cross-section A-A, view from above.
  • Drawing 4 - shows the view as per longitudinal cross-section B - B, in which streaming of the air and position of ventilator, air to water high temperature heat pump, hot water to air heat exchanger and jalousies are shown.
  • Drawing 5 - shows side view as per diagonal cross-section C-CJn which the positions of threaded spindle and heat exchangers for heat recovery are shown.
  • Drawing 6 - shows view of diagonal cross-section D - D 1 in which positions of movable plates, rotational jalousies, air to air plate heat exchangers, heat accumulator, water steam boiler and ventilator electromotor are shown.
  • Drawing 7 - shows the scheme of hydraulic heat source connection.
  • Drawing 8 - shows the scheme of hydraulic moistening source connection.
  • the dryer 1 for tobacco drying consist of chamber 2 and chamber 3. Tobacco which will be dried threaded and packed in racks or in containers, is placed in chamber 3.
  • the structure of chamber 3 is the same as the structure of the dryers' chambers which are produced and delivered by tobacco dryers' producers, and therefore it is not necessary to describe it any further.
  • Tobacco drying is performed in the phase when moisture is not removed and in the phase when moisture from chamber 3, in which tobacco is dried, is removed. In the phase when moisture is not removed the yellowing of tobacco is performed. In the phase when moisture is removed, the fixation of the leaf color and the drying of the tobacco leaf and tobacco stem are performed.
  • tobacco producers receive drying technologies from tobacco production and drying instructors, which are applied to tobaccos of different ripeness and position of a leaf picked torn the tobacco stalk. Therefore, it is not necessary to describe the technology and tobacco drying regimes any further.
  • This invention also provides solutions for tobacco producers to effectively and reliably supervise technologies for drying tobacco of different ripeness and position of a leaf picked from the tobacco stalk, in order to get the best possible quality of dried tobacco.
  • Drawings 1 to 8 show tobacco drying system.
  • the following energy sources are used for tobacco drying: solar - radiating to solar collectors 4, air to water high temperature heat pump 5 and hot-water boiler 6 on gas, heating oil, coal, wood, biomass and electric power.
  • Hot-water boiler 6 is placed outside the dryer 1, and solar collectors 4 are placed on the dryer's roof 1 oriented towards South.
  • the rest of the equipment of the tobacco drying system is placed in the chamber 2 of the dryer 1.
  • the hot water to air heat exchanger 15 heats the moist air with the energy from the heat accumulator 12 if the temperature in the heat accumulator 12 is higher than the necessary temperature required for the heating of moist air, and if temperature in heat accumulator 12 is lower than the necessary temperature required for the heating of moist air then the hot water to air heat exchanger 15 heats the moist air by using the energy from the hot- water boiler 6.
  • the movable plates have vertically positioned rubber multi-layer gaskets 19 and 29 installed on them, with small gap next to air to air plate heat exchangers 7 and 8, which prevent the passing of moist and dry air out of open inlet of air to air plate heat exchangers 7 and 8.
  • Threaded spindle 21 with left and right thread performs moving and adjusting of movable plates 16 and 17.
  • Reversble electromotor 22 with reducer which works a three point hitch, performs rotary motion of threaded spindle 21 with left and right thread through chain transmission 23.
  • Digital moist regulator / indicator and moist transmitter installed into control cabinet 24, by using humidity sensor 25, reversible electromotor 22 with reducer, which works a three point hitch, chain transmission 23, threaded spindle 21 with left and right thread, by adjusting distance between movable plates 16 and 17, keep the necessary volume of relative humidity in the chamber 3 for tobacco drying.
  • sheet metal frame 26 for the protection of frame surfaces of air to air plate heat exchangers 7 and 8 from wearing due to moving of movable plates 16 and 17 is placed.
  • the limit electric-switches 27 and 28 restrict the moving of movable plates 16 and 17 by turning off the reversble electromotor 22 with reducer.
  • the rotating jalousie 29 regulates the flow of moist air towards hot water to air heat exchanger 15 in order to keep the constant pressure of moist air towards air to air plate heat exchangers 7 and 8 during the removal of moist from the chamber 3.
  • Reversible electromotor actuator 30 with reducer which works a three point hitch performs rotational moving of rotating jalousie 29.
  • Digital regulator / indicator and differential pressure transmitter connected to delivery tube with sensors 32 and 33 are installed in control cabinet 31, which by reversible electromotor actuator 30 keep the set moist air pressure in front of air to air plate heat exchangers 7 and 8 and flow of moist and dry air through air to air plate heat exchangers 7 and 8.
  • the limit electric-switch 28 will reset the rotating jalousie 29 to the position of maximal flow of moist air from the duct 34 to the duct 35 and turn off the circulating pumps 36 when moist air is not taken out and dry air is not taken in by using reversible electromotor actuator 30 with reducer, which works a three point hitch.
  • the limit electric-switch 37 limits minimal distance between movable plates 16 and 17 by turning off the reversible electromotor 22 with reducer.
  • the air to water heat exchanger 9 and hot water to air heat exchangers 10 and 11 will, by using tube installation and circulating pump 36, recover the remaining energy of moist air after passing through air to air plate heat exchangers 7 and 8 and transmit the energy to dry air which comes in from the environment, before entering the air to air plate heat exchangers 7 and 8.
  • the circulating pump 36 is turned on by limit electric-switch 28 at the moment of opening of flow of dry and part of moist air towards air to air plate heat exchangers 7 and 8.
  • the circulating pump 38 through electromotor three-way three-position control valve 39, which works a three point hitch, continuously adds necessary amount of energy to the hot water to air heat exchanger 15.
  • Electromotor three-way three-position control valve 39 which works a three point hitch enables the re-circulation of hot water by circulating between hot water to air heat exchanger 15 and electromotor three-way three- position control valve 39 by reducing supply of energy to the hot water to air heat exchanger 15.
  • Electromotor three-way three-position control valve 39 which works a three point hitch regulates the supply of energy to the hot water to air heat exchanger 15. Adjustment and maintenance of drying air temperature at a set value is performed by temperature transmitter 40 and temperature regulator/ indicator, installed in control cabinet 24 affecting electromotor of three-way three-position control valve 39 which works a three point hitch.
  • Differential thermostat 41 controls the temperatures difference in heat accumulator 12 and in hot water to air heat exchanger 15 by using temperature sensors 42 and 43. If the temperature in heat accumulator 12 is higher that the temperature in hot water to air heat exchanger 15, differential thermostat 41 will put electromotor three-way two-position valve 44 in the position to use the energy from the heat accumulator 12, turn off the hot-water boier 6 and turn off the circulating pump 45, and if temperature is not higher it will put electromotor three-way two-position valve 44 in the position to use energy from the hot-water boiler 6, turn on the hot-water boiler 6 and the circulating pump 45.
  • the differential thermostat 46 controls the temperatures difference in solar collectors 4 in relation to temperatures in hot water to air heat exchanger 15 and air to water heat exchanger 9 by temperature sensors 47, 48 and 49. If the temperature in solar collectors 4 is higher than the temperature in hot water to air heat exchanger 15 differential thermostat 46 wil turn off the air to water high temperature heat pump 5, which will by using its automatics turn off the circulating pump 50, turn on the circulating pump 51 and put the electromotor three-way two-position valve 52 in the position to transmit the energy from solar collectors 4 to heat accumulator 12.
  • differential thermostat 46 will turn off the circulating pump 51, turn on the air to water high temperature heat pump 5 which will by using its automatics turn on the circulating pump 50, put the electromotor three-way two-position valve 52 in the position in which energy from air to water high temperature heat pump 5 can be transmitted towards heat accumulator 12 and put electromotor three-way two-position valve 53 into position in which energy from solar collectors 4 is transmitted towards hot water to air heat exchangers 10 and 11.
  • differential thermostat 46 When temperature in solar collectors 4 is lower than the temperature in air to water heat exchanger 9, differential thermostat 46 wil put electromotor three-way two-position valve 53 into position to enables energy recovery by using air to water heat exchanger 9 and hot water to air heat exchangers 10 and 11.
  • air to water high temperature heat pump 5 by using its automatics, turns off the circulating pump 50, at the same time, it will also shut down the jalousies 102 by electromagnetic auxiliary switch which is installed in the control cabinet 31 and reversible electromotor 103. If the temperature in solar collectors 4 is lower than the temperature in heat accumulator 12 differential thermostat 54 will turn off the circulating pump 51, by using sensors 55 and 56, and if it is higher it will turn on the circulating pump 51.
  • the diatation of hot water and maintaining of adjusted pressure is enabled by closed expansion tanks 57, 58 and 59, and pipe installation and equipment is protected from the increased pressure by safety valves 60, 61 and 62.
  • Balancing valves 63, 64 and 65, straightway valves 66, 67 and 68, drain valves 69, 70 and 71, automatic air vents at the highest points 72, 73, 74, 75 and 76, dirt-catchers 77, 78 and 79, pressure manometers 80 and 81 and thermometers 82, 83 and 84 are installed in the hot-water pipe installation.
  • the differential bypass valve 85 will enable the re-circulation of part of hot water at the time when the need for consumption of energy of hot- water boiler 6 is reduced.
  • the heating fluid is boiler water if dryers are installed at the places where minimal environmental temperatures are higher than +2°C, and if minimal environmental temperature is lower than +2°C then ethylene glycol is added to boier water in the percentage which will prevent the freezing of the fluid at low temperatures.
  • Forcible air circulation is achieved by radial vent ⁇ ator 86 moved by electromotor 87 which are mutually connected by cardan shaft 88. W
  • the amount of air flow at a set value is performed by regulating number of electromotor's 87 revolutions.
  • the number of electromotor's 87 revolutions is regulated by electronic frequency regulator installed in control cabinet 31, by air flow speed transmitter 89 and speed regulator / indicator, installed in control cabinet 31.
  • Radial ventilator 86, half-round sheet metal 91, perforated tube 92 and hot water to air heat exchanger 15 are installed in vertical rectangular duct 90. Above the vertical rectangular duct 90 air to air plate heat exchangers 7 and 8 are installed, resting on bracket 93 which lies on one side of vertical rectangular duct 90. Air to air plate heat exchangers 7 and 8 are spaced due to safe closing of moist and dry air passage through air to air plate heat exchangers 7 and 8 by movable plates 16 and 17.
  • Sheet metal frame 26 closes the space between air to air plate heat exchangers 7 and 8. Moist air from chamber 3 passes through the opening 94 between chambers 2 and 3 and streams into duct 34. In the phase when moisture is not removed moist air crculates from duct 34 into duct 35, passes through hot water to air heat exchanger 15 and becomes drying air. In the phase when moisture is removed part of moist air circulates from duct 34 through duct 35 towards hot water to air heat exchanger 15, and another part circulates between movable plates 16 and 17 through air to air plate heat exchangers 7 and 8 and through air to water heat exchanger 9 into duct 95. Moist air which by using heat exchangers passed the majority of heat to dry air becomes the air with increased relative humidity in duct 95.
  • Part of air with increased relative humidity circulates from duct 95 through ducts 96 and 97 through protective grid 98 into environment, and another part circulates through beveled duct 99 towards air to water high temperature heat pump 5.
  • the half-round sheet metal 100 for collecting condensate from moist air is installed in duct 96, and the condensate is taken into environment by tubes 101.
  • Jalousies 102, which use reversible electromotor 103 with reducer for regulation of taking away of part of air with increased relative humidity towards air to water high temperature heat pump 5 are installed in beveled duct 99.
  • Drying air by using radial ventilator 86 which enables forcble air flow, circulates through duct 114, passes through perforated floor 115, enters the chamber 3, passes between tobacco leaves taking away their moisture, becomes moist air and circulates towards the opening 94 between chambers 2 and 3 into the duct 34.
  • Filter grid 116 is installed between the chambers 2 and 3 in the opening 94.
  • drum-type two- position switch which is installed in control cabinet 24 should be put into tobacco moistening position, and when tobacco moistening is finished it should be reset to tobacco drying position.
  • Drum-lype two-position switch which is installed in control cabinet 24 redirects the operation of digital moist regulator / indicator installed in control cabinet 24 by humidity microprocessor 25 from three-position operation during tobacco drying to two-position operation during tobacco moistening by thermostat 117.
  • Tobacco is moistened with overheated water steam, which is produced in boiler 118 as saturated water steam by electric heater 119.
  • Level regulator 120 maintains the water level in boiler 118 and enables electric heater 119 to be constantly in water. When water level is below set value, the level regulator 120 wll open electromagnetic valve 121 and will enable water under pressure to come into boiler 118, and when set level is reached, level regulator 120 wll close electromagnetic valve 121 and wil cutoff the supply of water into boier 118.
  • Thermostat 122 turns on the electric heater 119 at a set value for water steam temperature.
  • Limitative thermostat 123 will turn off the electric heater 119 if set temperature in boier 118 is exceeded.
  • Electric heater 119 heats the water at a set value at which it evaporates, increases the pressure in the boiler 118 in which there hot water is in the bottom zone, and water steam is in the upper zone there. Water steam is prepared for moistening when set temperature for water steam is reached in the boiler 118.
  • moisture microprocessor 25 At the moment when set temperature for water steam is reached in boiler 118, on the basis of digital moisture regulator / indicator installed in control cabinet 24, by moisture microprocessor 25 by which the increase of air humidity at a set value is required, water steam will be let out from the boiler 118 by using thermostat 117 and electromagnetic valve 124.
  • Water steam when passing through electromagnetic valve 124 and tube 125, is expanded by pressure reduction and by perforated tube 92, which lets through over-heated steam and it moistens air in duct 35.
  • radial venMator 86 which enables forcible air circulation, the air enters into vertical rectangular duct 90, gets moistened with over-heated water steam, flows through duct 114, passes through perforated floor 115, enters into chamber 3, passes between tobacco leaves, moistens tobacco, passes through the opening 94 between chambers 2 and 3, circulates through duct 34 and 35 towards rectangular duct 90 and keeps on circulating.
  • Tobacco moistening tube installation has a non-return valve 129, water intake pressure regulator 130, dirt catcher 131, straightway valve 132, pressure manometer 133, thermometer 134 and balancing valve 135.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Sustainable Development (AREA)
  • Drying Of Solid Materials (AREA)
  • Photovoltaic Devices (AREA)

Abstract

La présente invention concerne des sources d'énergie: des collecteurs solaires (4), une pompe à chaleur air-eau haute température (5) et une chaudière d'eau surchauffée (6). Grâce à l'utilisation d'un ventilateur radial (86), l'air de séchage s'écoule par un conduit (114), traverse un sol perforé (115), pénètre dans une enceinte (3), et s'humidifie en s'écoulant à travers un produit humide, s'écoule par une ouverture (94) pour pénétrer dans un conduit (34). Lorsque l'humidité n'est pas éliminée, l'air humide circule dans le conduit (35), l'échangeur thermique eau surchauffée-air (15), se transforme en air de séchage et est recyclé. Lorsque l'humidité est éliminée, une partie de l'air humide dans le conduit (34) circule à travers des échangeurs thermiques à plaques air-air (7) et (8), un échangeur thermique air-eau (9) et à travers des conduits (96) et (97), s'écoule vers l'atmosphère. L'air provenant de l'atmosphère pénètre à travers des grilles d'aération (108) et (109), circule à travers les conduits (110) et (111), traverse les échangeurs thermiques eau surchauffée-air (10) et (11), les échangeurs thermiques à plaques air-air (7) et (8), et se mélange à l'air humide dans un conduit (35). De l'air mélangé traverse l'échangeur thermique eau surchauffée-air (15), se transforme en air de séchage et continue à s'écouler. L'humidification est réalisée par vapeur d'eau surchauffée.
PCT/RS2008/000024 2007-07-17 2008-07-14 Système d'énergie pour sécher des produits humides WO2009011607A2 (fr)

Priority Applications (2)

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CN2008800233818A CN101796361B (zh) 2007-07-17 2008-07-14 潮湿产品烘干用热源装置
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US20120000090A1 (en) * 2009-03-23 2012-01-05 Bühler AG Method and Device for Drying Goods
CN102342578A (zh) * 2011-09-22 2012-02-08 东莞市正旭新能源设备科技有限公司 高效空气源低碳烟草烘干设备
FR2973866A1 (fr) * 2011-04-05 2012-10-12 Enthalpy Control Installation de sechage
CN104567330A (zh) * 2014-12-31 2015-04-29 伯恩太阳能科技有限公司 一种智能物联网烘干装置
CN105394803A (zh) * 2015-11-02 2016-03-16 云南省烟草公司文山州公司 一种多热源供热烤烟房
CN106595233A (zh) * 2016-12-20 2017-04-26 珠海格力电器股份有限公司 一种热泵烘干机
CN108185500A (zh) * 2018-03-12 2018-06-22 湖南科技大学 洁能内循环密集烤房烘烤系统
CN112021630A (zh) * 2020-09-21 2020-12-04 东南大学 蓄热式太阳能耦合空气源热泵烟叶干燥系统及控制方法

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CN103256806B (zh) * 2012-02-20 2015-09-02 艾默生电气公司 用于干燥材料的装置和方法
CN103727768B (zh) * 2012-10-16 2016-05-18 莫少民 一种蓄热式复叠热泵二级回热脱水烘房系统
CN104197652B (zh) * 2014-08-26 2016-06-08 王杰阳 一种双向气流烘烤装置
CN104329931B (zh) * 2014-10-18 2017-05-31 江阴万龙源科技有限公司 枸杞太阳能热泵复合模块化烘干机
CN105403027B (zh) * 2015-12-03 2018-03-13 河北工大太阳能设备有限公司 使用高效组合蒸汽源的传导式干燥方法
CN106070593A (zh) * 2016-07-25 2016-11-09 江苏大学 一种热源联用技术谷物烘干装置及方法
CN107897361A (zh) * 2017-12-16 2018-04-13 安徽热风环保科技有限公司 节能环保全天候热泵烘干中心成套系统
CN108477659B (zh) * 2018-03-12 2021-06-08 湖南科技大学 多能源互补的内循环密集烤房
CN112918098B (zh) * 2021-02-01 2022-07-12 巩义市奔腾辊业有限公司 一种节能环保型塑料膜烘干机及方法

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US20120000090A1 (en) * 2009-03-23 2012-01-05 Bühler AG Method and Device for Drying Goods
US9332772B2 (en) * 2009-03-23 2016-05-10 Bühler AG Method and device for drying goods
FR2973866A1 (fr) * 2011-04-05 2012-10-12 Enthalpy Control Installation de sechage
CN102342578A (zh) * 2011-09-22 2012-02-08 东莞市正旭新能源设备科技有限公司 高效空气源低碳烟草烘干设备
CN104567330A (zh) * 2014-12-31 2015-04-29 伯恩太阳能科技有限公司 一种智能物联网烘干装置
CN104567330B (zh) * 2014-12-31 2016-12-14 伯恩太阳能科技有限公司 一种智能物联网烘干装置
CN105394803A (zh) * 2015-11-02 2016-03-16 云南省烟草公司文山州公司 一种多热源供热烤烟房
CN106595233A (zh) * 2016-12-20 2017-04-26 珠海格力电器股份有限公司 一种热泵烘干机
CN108185500A (zh) * 2018-03-12 2018-06-22 湖南科技大学 洁能内循环密集烤房烘烤系统
CN112021630A (zh) * 2020-09-21 2020-12-04 东南大学 蓄热式太阳能耦合空气源热泵烟叶干燥系统及控制方法

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RS20070307A (en) 2008-09-29
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WO2009011607A3 (fr) 2009-04-16
RS51760B (en) 2011-12-31
HRP20090682A2 (hr) 2010-01-31

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