CN104121650A - Energy-saving centralized air conditioning dehumidification system for tobacco mellowing warehouse and control method - Google Patents
Energy-saving centralized air conditioning dehumidification system for tobacco mellowing warehouse and control method Download PDFInfo
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- CN104121650A CN104121650A CN201410355569.XA CN201410355569A CN104121650A CN 104121650 A CN104121650 A CN 104121650A CN 201410355569 A CN201410355569 A CN 201410355569A CN 104121650 A CN104121650 A CN 104121650A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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Abstract
The invention relates to an energy-saving centralized air conditioning dehumidification system for a tobacco mellowing warehouse and a control method of the energy-saving centralized air conditioning dehumidification system. The system comprises a heat recovery type air-cooled heat pump unit, a roof type air handling unit, a freezing water supply and return pipeline, a heat recovery water supply and return pipeline, an air supply pipeline, an air return pipeline and an automatic control system matched with the system, wherein the roof type air handling unit is connected with the heat recovery type air-cooled heat pump unit through the freezing water supply and return pipeline and the heat recovery water supply and return pipeline; the roof type air handling unit supplies air subjected to handling to all floors or all tobacco storage regions through the air supply pipeline and the air return pipeline, so that air circulation is achieved. Compared with a traditional distributed dehumidifier for the tobacco mellowing warehouse, the energy-saving centralized air conditioning dehumidification system for the tobacco mellowing warehouse has the technical advantages of being efficient in operation, capable of saving energy, reasonable in temperature and humidity control, low in initial equipment investment, low in maintenance workload and the like.
Description
Technical field
The present invention relates to a kind ofly provides the system of optimum humiture environmental condition for tobacco mellowing technique, be specifically related to a kind of energy-saving central air conditioning dehumidification system for tobacco mellowing warehouse, and a kind of control method of the energy-saving central air conditioning dehumidification system for tobacco mellowing warehouse.
Background technology
In production of cigarettes field, tobacco leaf harvesting, after just roasting, redrying, in order to remove blue or green assorted taste and to reduce excitant, improves flavouring essence quality, is in harmonious proportion chemical composition, improves combustibility and the smoking quality of tobacco leaf, must be through alcoholization processing before for production of cigarettes.The alcohol of tobacco leaf is divided into artificial ageing and two kinds of methods of natural alcoholization.Artificial ageing is that even addition portion is divided chemical reagent, impels tobacco leaf to refine within the short time (1～2 month) by higher temperature and relative humidity.Natural alcoholization is that tobacco leaf is placed in alcoholizing library by seeking survival, and by controlling uniform temperature humidity, carries out the natural alcoholization of (2～3 years) for a long time.Artificial ageing's speed is fast, but refines of poor qualityly, and tobacco business usually adopts the method a few years ago, substantially need not at present.The tobacco leaf color and luster of natural alcoholization is vivid, fragrance is graceful, a little less than excitant, be the main tobacco natural alcoholization form adopting at present.
Natural alcoholization need to be used a large amount of tobacco mellowing warehouses.According to < < tobacco and tobacco product warehouse design standard > >, a cigar mill that produces 1000000 casees per year, normal tobacco leaf storage capacity is 9,500 ten thousand kilograms, value is (by 1800 yuan of calculating of every 50 kilograms of tobacco leaves) up to 3,500,000,000 yuan, need to be equipped with 120,000 square metres of tobacco mellowing warehouses (calculating by multilayer alcoholizing library).On the other hand, because tobacco leaf growth is subject to the impact of natural climate and other factors, all there is unstability in yield of tobacco and quality, can slow down the imbalance between supply and demand of tobacco leaf by a certain amount of tobacco leaf storage.Therefore, how in the warehouse of large space, createing suitable temperature, a humidity environment and manage the tobacco leaf stock that sound value is huge, is an important topic of common concern in industry.
According to < < tobacco and tobacco product warehouse design standard > >, the preference temperature of tobacco natural alcoholization storage is 20～30 ℃, and humidity is 55～65%.Under suitable temperature and humidity conditions, tobacco leaf presentation quality, physical behavior and sucking quality all obtain larger improvement, as excess Temperature (higher than 35 ℃), humidity excessive (being greater than 70%), tobacco mellowing speed is accelerated, after alcoholization, tobacco leaf color deepens, inferior quality, and tobacco leaf is easy to go mouldy; As too low in temperature (lower than 15 ℃), the activity of enzyme is faint or suppressed, and tobacco mellowing speed is very slow, and alcoholization excessive cycle, is difficult to make tobacco leaf fine quality fully to form, and is unfavorable for the in good time use of tobacco leaf.According to incompletely statistics, the loss approximately 1%～2% that China's tobacco leaf is not suitable for causing because of the storage environment in natural alcoholization process, reaches more than 35,000,000 yuan for its direct economic losses of cigar mill of 1,000,000 casees scales.
For solving the indoor environment problem of tobacco mellowing storage, tobacco leaf alcoholizing pool adopts wind pipe type dehumidifier system conventionally at present, and its main starting point is the air dewetting problem while solving summer high temperature high humidity.Specific practice is: (about 2000～3000m in every layer of unit area in tobacco leaf storehouse
2) decentralized configuration 1～2 typhoon pipe temp .-controlled type dehumidifier, by controlling the start and stop of dehumidifier, guarantee that indoor relative humidity is less than 65%.There is following shortcoming in this system: 1) for the tobacco mellowing reservoir area of certain scale, dehumidifier equipment configuration quantity is huge disperses again, and initial cost is high, and operation maintenance is very inconvenient; 2) can only solve the problem that dehumidifies summer, and (generally 22 ℃～26 ℃ left and right) on the low side that when dehumidifying, indoor air temperature fallen, being unfavorable for tobacco mellowing quality and alcoholization speed, tobacco mellowing in summer preference temperature is 28 ℃～30 ℃; 3) dehumidifier needs the machine room of independent sealing, take every layer of effective stock's area, and during tobacco bale is carried out to PH3 fumigant insect killing, dehumidifier is easily corroded and damages; 4) need a set of force ventilation pipe-line system of configuration in addition, solve transition season room ventilation ventilation problem, to drain in time the CO2 gas discharging in tobacco mellowing process.Indoor ducting system complicated layout, initial cost is high; 5) in reservoir area, the huge dehumidifier of quantity operates in frequently under start and stop state, causes the unstable and energy waste of electrical network.
Therefore,, for the construction of tobacco mellowing warehouse, in, easy maintenance reasonable, economical and practical in the urgent need to a kind of advanced technology, energy-saving and cost-reducing storehouse, environment guarantees system.
Summary of the invention
For overcoming current tobacco mellowing warehouse, adopt the deficiency of distributing dehumidifier system, the invention provides a kind of energy-saving central air conditioning dehumidification system that is applicable to tobacco mellowing warehouse, and a kind of control method of the energy-saving central air conditioning dehumidification system for tobacco mellowing warehouse.The present invention adopts following technical scheme:
A centralized air dehumidification system for tobacco mellowing warehouse, comprising:
Roof type air dewetting equipment, is located at roof, tobacco leaf storehouse or outdoor, the functions such as air cooling-down dehumidifying, heating, filtration is provided for tobacco mellowing environment, and carries Cooling and Heat Source.Described roof type air dewetting equipment, comprising: combined air processing group, and described combined air processing group is sequentially provided with new return air mixing, filter, surface cooler, recuperation of heat reheater and pressure fan from return air inlet to air outlet; Recovery type heat Air-Cooled Heat Pump Unit, by freezing, for water return pipeline and recuperation of heat, for water return pipeline, to described combined air processing group, provide air dewetting chilled water and heat hot water more simultaneously, wherein, the freezing surface cooler that connects described recovery type heat Air-Cooled Heat Pump Unit and described assembled air-conditioner unit for water return pipeline, recuperation of heat connects the recuperation of heat reheater of described recovery type heat Air-Cooled Heat Pump Unit and described assembled air-conditioner unit for water return pipeline; Air supply duct, comprise air-supply main and blowpipe, described air-supply main one end is connected with the air outlet of described combined air processing group, and the air of processing is delivered to each floor, described blowpipe is uniformly distributed in each floor or each tobacco mellowing region, is connected with described air-supply main; And return air duct, comprising return air main and return air arm, described return air main one end is connected with the return air of described combined air processing group, and described return air arm is uniformly distributed in each floor or each tobacco mellowing region, is connected with described return air main.
Further, described combined air processing group is equipped with respectively floor air-supply adjusting air valve and floor return air adjusting air valve to the blowpipe in each floor or each tobacco mellowing storage region, return air arm, to realize the dehumidifying in turn in each floor or each tobacco mellowing storage region, or variable air volume running.
Further, described combined air processing group also comprises fan frequency converter, for regulating the operation air quantity of air-treatment unit.
Further, described combined air processing group giving, return air inlet is provided with electronic cut-off air-valve, described combined air processing group is connected with return air main with described air-supply arterial highway by described electronic cut-off air-valve.During system operation, described electronic cut-off air-valve is opened, and guarantees air proper flow in system; During PH3 fumigant insect killing is carried out in tobacco leaf storehouse, system is out of service, and described electronic cut-off air-valve cuts out, and cuts off air flowing in system airduct, prevents that PH3 gas permeation from, to the inside of described assembled air-conditioner unit, causing the corrosion and damage of equipment.
Further, the new wind entrance of described assembled air-conditioner unit comprises that new wind-powered electricity generation moves adjusting air valve; Return air entrance comprises return air motorized adjustment air-valve.
Further, the described freezing water return pipeline that supplies comprises the first electric T-shaped valve that regulates described surface cooler chilled-water flow.
Further, described recuperation of heat comprises the second electric T-shaped valve of the hot water flow that regulates described recuperation of heat reheater for water return pipeline.
The innovative point of the energy-saving central air conditioning dehumidification system of tobacco mellowing warehouse of the present invention is: (1) utilizes thermal inertia and the loose requirement of tobacco mellowing environment to Temperature and Humidity Control accuracy rating of tobacco bale and building maintenance structure in tobacco leaf storehouse, described system can realize the dehumidifying in turn in every layer of tobacco mellowing region, or variable air rate energy-saving run, greatly save investment of equipment and the operating cost of dehumidifying air-conditioning system; (2) according to (28 ℃～30 ℃ of tobacco mellowing process environments, 55%～65%RH) the requirement of corresponding high dew-point temperature, by improving the freezing supply water temperature of described recovery type heat Air-Cooled Heat Pump Unit, realize the high energy efficiency energy-saving run of described recovery type heat Air-Cooled Heat Pump Unit; (3) by tobacco leaf storehouse air conditioner dehumidification equipment centralized arrangement on roof or outdoor, avoided the corrosion and damage that during the PH3 fumigant insect killing of tobacco leaf storehouse, equipment caused, facilitated the centralized maintenance maintenance of equipment simultaneously.
The invention still further relates to a kind of control method of utilizing said system to dehumidify to tobacco mellowing warehouse, it comprises the following steps: (1) according to the climate characteristic of annual Various Seasonal and Ku Nei air condition, at roof, by recovery type heat Air-Cooled Heat Pump Unit 1, provide with warehouse in dew-point temperature matches under environment cold water; (2) utilize roof type combined air processing group 2 to utilize described cold water to concentrate dehumidifying and temperature and humidity regulation to the air in warehouse at roof; (3) air of handling well distributed with alternating mode and be transported in the storehouse of different floors, or maintaining without the operation under positive pressure that carries out air conditioning floor; (4) air trapping the loopback after the wet exchange of heat in each floor storehouse carried out to circular treatment.
Further, step (1) further comprises: different outdoor temperature humidity scopes is divided into different seasonal regionalization operating modes, according to real time humiture situation in warehouse, described tobacco leaf storehouse central air conditioning dehumidification system is controlled to the operational modes such as cool-down dehumidification, intensification moisturizing, cooling moisture-retaining or system defrosting again.
Centralized air dehumidification system for tobacco mellowing warehouse of the present invention is compared with traditional tobacco mellowing warehouse distributing dehumidifier, has the technical characterstics such as operation is energy-efficient, Temperature and Humidity Control is reasonable, investment of equipment is low, maintenance workload is little.
Accompanying drawing explanation
Fig. 1 is the roof apparatus arrangement schematic diagram of the energy-saving central air conditioning dehumidification system of tobacco leaf warehouse of the present invention;
Fig. 2 is the sending of the energy-saving central air conditioning dehumidification system of tobacco leaf warehouse of the present invention, return air schematic flow sheet;
Fig. 3 a and Fig. 3 b are the roof type air processor structural representation (observing from different faces) of the energy-saving central air conditioning dehumidification system of tobacco leaf warehouse of the present invention;
Fig. 4 be in the individual layer storehouse of the energy-saving central air conditioning dehumidification system of tobacco leaf warehouse of the present invention, give, backwind tube schematic layout pattern.
The specific embodiment
As shown in Figure 1, the energy-saving central air conditioning dehumidification system for tobacco mellowing warehouse according to the present invention is mainly by recovery type heat Air-Cooled Heat Pump Unit 1), roof type combined air processing group 2, and supporting air supply duct 3 and return air duct 4 forms.Recovery type heat Air-Cooled Heat Pump Unit 1 and roof type combined air processing group 2 form roof type and concentrate air dewetting equipment, be located at roof, tobacco leaf storehouse or outdoor, the functions such as air cooling-down dehumidifying, heating, filtration are provided for tobacco mellowing environment, and carry cold and heat source.Air supply duct 3 and return air duct 4 form air blow and return pipe-line system, for the air after roof type combined air processing group 2 is processed is shunted to conveying in tobacco leaf storehouse, and the air after overheated wet exchange in tobacco leaf storehouse is collected to backward roof type combined air processing group 2 interior conveyings.The present invention, by air dewetting equipment is set at roof, focuses on the air in tobacco leaf warehouse, has avoided disperseing to place the defect of air processor, reaches efficient management, reduces the object of investing and efficiently utilizing place.
As shown in Figure 2, the complete set of equipments that is custom-made according to the recovery type heat Air-Cooled Heat Pump Unit 1 of the energy-saving central air conditioning dehumidification system for tobacco mellowing warehouse of the present invention, the freezing water and air of high temperature modification of being mainly responsible for simultaneously providing air dewetting to use to described roof type combined air processing group 2 is heat hot water again.The freezing surface cooler 2.1.3 that connects recovery type heat Air-Cooled Heat Pump Unit 1 and roof type assembled air-conditioner unit 2 for water return pipeline 1.1; Recuperation of heat connects the recuperation of heat reheater 2.1.4 of recovery type heat Air-Cooled Heat Pump Unit 1 and roof type assembled air-conditioner unit 2 for water return pipeline 1.2.Freezing the first electric three-way regulating valves 1.1.1 that is provided with reconciliation statement cooler 2.1.3 chilled-water flow for water return pipeline 1.1, recuperation of heat is provided with the second electric three-way regulating valves 1.2.1 that regulates recuperation of heat reheater 2.1.4 hot water flow for water return pipeline 1.2.
As shown in Fig. 3 a and 3b, according to the roof type combined air processing group 2 of the energy-saving central air conditioning dehumidification system for tobacco mellowing warehouse of the present invention, it is electromechanical integration equipment, comprise air-treatment case 2.1 and automatic control cabinet 2.2, air-treatment case wherein is sequentially provided with new air-return mixing section 2.1.1, filter 2.1.2, surface cooler 2.1.3, recuperation of heat reheater 2.1.4, pressure fan 2.1.5 and fan frequency converter 2.1.6 from its return air inlet to air outlet, and the latter is for regulating the operation air quantity of air-treatment unit.Air outlet, return air inlet in roof type combined air processing group are provided with the electronic cut-off air-valve 2.1.7 of air-supply and the electronic cut-off air-valve of return air 2.1.8, are connected respectively with air-supply main 3.1 with return air main 4.1.During system operation, electronic cut-off air-valve 2.1.7 and 2.1.8 open, and guarantee air proper flow in system; During PH3 fumigant insect killing is carried out in tobacco leaf storehouse, system is out of service, and described electronic cut-off air-valve 2.1.7 and 2.1.8 close, and cuts off air flowing in system airduct, prevent that PH3 gas permeation from, to the inside of roof type assembled air-conditioner unit 2, causing the corrosion and damage of equipment.
As shown in Figure 2 and Figure 4, according to the air supply duct 3 of the energy-saving central air conditioning dehumidification system for tobacco mellowing warehouse of the present invention, comprise air-supply main 3.1, floor blowpipe 3.2, be located at floor air-supply adjusting air valve 3.3 and end arm 3.4 in floor blowpipe 3.2, one end of air-supply main 3.1 is connected with the air outlet of roof type combined air processing group 2, the air of processing is delivered to each floor, floor blowpipe 3.2 is evenly distributed in each floor or each tobacco mellowing region, is connected with air-supply main 3.1.Floor air-supply control valve 3.3 is preferably electric control valve, by aforesaid automatic control cabinet 2.2, regulates control, transfers to the wind-force size of different floors for switch or adjusting.
As shown in Figure 2 and Figure 4, according to the return air duct 4 of the energy-saving central air conditioning dehumidification system for tobacco mellowing warehouse of the present invention, comprise return air main 4.1, floor return air arm 4.2, be located at the floor return air adjusting air valve 4.3 of floor return air arm 4.2 and be evenly laid in return air inlet 4.4 on floor return air arm 4.2, return air main 4.1 one end are connected with the return air inlet of roof type combined air processing group 2, floor return air arm 4.3 is uniformly distributed in each floor or each tobacco mellowing region, is connected with return air main 4.1.Floor return air control valve 4.3 is preferably electric control valve, by aforesaid automatic control cabinet 2.2, regulates control, for switch or regulate the wind-force size of the return air of different floors.
Preferably, the first electric T-shaped valve 1.1.1 adjustable ground being arranged between recovery type heat Air-Cooled Heat Pump Unit 1 and the surface cooler 2.1.3 of roof type combined air processing group 2 is communicated with flow pipe line with return piping, to regulate the cold that supplies of handpiece Water Chilling Units 1.By this, arrange, the temperature that preferably makes the cold water that returns from surface cooler 2.1.3, the scope of 18-20 ℃, most preferably is 18 ℃.As further optimal way, control the temperature of the cold water that flows into surface cooler 2.1.3 12 ℃ of left and right, 11-13 ℃ for example, in this temperature and tobacco leaf storehouse, the high dew-point temperature of environment reaches optimum Match, reduce the compressor load level of handpiece Water Chilling Units under application-specific condition, can effectively reduce system operation energy consumption.Here high dew-point temperature refers to that the dew point (11-13 ℃) of environment in tobacco leaf storehouse for example, higher than the dew point (conventionally at 7-8 ℃) of existing airhandling equipment (air-conditioning).
In a preferred embodiment, the part heat that recovery type heat Air-Cooled Heat Pump Unit 1 discharges dehumidification process reclaims and offers recuperation of heat reheater 2.1.4, for promoting the temperature of processed air, makes the temperature of air reach the scope of 26-30 ℃.The the second electric T-shaped valve 1.1.1 adjustable ground being arranged between recovery type heat Air-Cooled Heat Pump Unit 1 and the recuperation of heat reheater 2.1.4 of roof type combined air processing group 2 is communicated with flow pipe line with return piping, to regulate handpiece Water Chilling Units 1 to the heating load of recuperation of heat reheater 2.1.4.The supply water temperature of above-mentioned the second electric T-shaped valve 1.2.1 and recovery type heat Air-Cooled Heat Pump Unit 1 is controlled by automatic control cabinet 2.2, and this switch board is arranged on roof type assembled air-conditioner unit 2, also can arrange separately with the form of an independent switch board.
The capital equipment of the energy-saving central air conditioning dehumidification system for tobacco mellowing warehouse of the present invention is installed in the roof of every storehouse, and the roof of every storehouse also can arrange the equipment such as the identical recovery type heat Air-Cooled Heat Pump Unit 1 of two covers, roof type combined air processing group 2, two complete equipments both can be worked when needed simultaneously, also can be standby each other, the two shares a set of air supply duct 3 and return air duct 4 to two fire compartments of each floor, by blow control valve 3.2 and floor return air control valve 4.2 of floor, comes that rotation is sent, return air.System can concentrate ventilation drying to process to five layers of tobacco leaf storehouse, can also utilize the thermal inertia of tobacco bale and building enclosure, processes 2～3 floors, the low air quantity of all the other floors operation under positive pressure on duty at every turn simultaneously.
Of the present invention preferred aspect, roof type combined air processing group 2 integral body are aluminum alloy frame girder construction, with backplate, cover, and heat-insulation layer is set in backplate.Different according to environment for use, backplate thickness can have different specifications, for example the thickness of 25mm, 50mm, 100mm.Cold water and hot water that roof type combined air processing group 2 utilizes recovery type heat Air-Cooled Heat Pump Unit 1 to produce, air in tobacco mellowing warehouse is carried out to annual concentrated dehumidifying and temperature adjusting, its assembled easy, heat-insulation and heat-preservation, rain and sun, can be under different indoor and outdoor temperature conditions, to carrying out dehumidification treatments in tobacco leaf alcoholizing pool, to meet environmental requirement in tobacco leaf alcoholizing pool.
The operation principle of the energy-saving central air conditioning dehumidification system of tobacco mellowing warehouse of the present invention is: centralized arrangement obtains chilled water and hot water to described recovery type heat Air-Cooled Heat Pump Unit in the described combined air processing group on roof, tobacco leaf storehouse simultaneously, by return air, to air supply direction, realize successively new return air mixing, filter, show cold dehumidifying, recuperation of heat is heat and the air handling processes such as pressurization of blowing again, by described air-supply main, blowpipe is delivered to the air after processing in every layer of tobacco mellowing region in tobacco leaf storehouse, by described return air main, return air arm draws back the air in every layer of tobacco mellowing region, tobacco leaf storehouse to combined air processing group, complete the flow circuit of air.System regulates by the new valve area of roof combined air processing group, guarantees the pressure-fired of Mei Ceng storage area, tobacco leaf storehouse; System passes through to regulate the chilled water temperature of described recovery type heat Air-Cooled Heat Pump Unit, described freezing every layer of the means assurances such as floor return air adjusting air valve of blowing on adjusting air valve, described return air arm for the floor on the electric T-shaped valve on water return pipeline, described fan frequency converter, described blowpipe for the electric T-shaped valve on water return pipeline, described recuperation of heat or the indoor temperature and humidity parameter in each tobacco mellowing region, and realizes the energy-saving run of system.
The innovative point of the energy-saving central air conditioning dehumidification system of tobacco mellowing warehouse of the present invention is: (1) utilizes thermal inertia and the loose requirement of tobacco mellowing environment to Temperature and Humidity Control accuracy rating of tobacco bale and building maintenance structure in tobacco leaf storehouse, described system can realize the dehumidifying in turn in every layer of tobacco mellowing region, or variable air rate energy-saving run, greatly save investment of equipment and the operating cost of dehumidifying air-conditioning system; (2) according to (28 ℃～30 ℃ of tobacco mellowing process environments, 55%～65%RH) the requirement of corresponding high dew-point temperature, by improving the freezing supply water temperature of described recovery type heat Air-Cooled Heat Pump Unit, realize the high energy efficiency energy-saving run of described recovery type heat Air-Cooled Heat Pump Unit; (3) by tobacco leaf storehouse air conditioner dehumidification equipment centralized arrangement on roof or outdoor, avoided the corrosion and damage that during the PH3 fumigant insect killing of tobacco leaf storehouse, equipment caused, facilitated the centralized maintenance maintenance of equipment simultaneously.The present invention also provides a kind of energy-saving central air conditioning dehumidifying multi-state air conditioning control method for tobacco mellowing warehouse, comprises the following steps:
(1) according to the climate characteristic of annual Various Seasonal and Ku Nei air condition, at roof, by recovery type heat Air-Cooled Heat Pump Unit 1, provide with warehouse in dew-point temperature matches under environment cold water;
(2) utilize roof type combined air processing group 2 to utilize described cold water to concentrate dehumidifying and temperature and humidity regulation to the air in warehouse at roof;
(3) air of handling well distributed with alternating mode and be transported in the storehouse of different floors, or maintaining without the operation under positive pressure that carries out air conditioning floor;
(4) air trapping the loopback after the wet exchange of heat in each floor storehouse carried out to circular treatment.
Preferably, in step 1, the cold water temperature providing is controlled to 11～13 ℃, the cold water temperature after heat exchange is controlled to 18～20 ℃.
Preferably, the waste heat that recovery type heat Air-Cooled Heat Pump Unit 1 is produced offers air processor, by being arranged on the temperature of the recuperation of heat reheater adjusting air in roof type combined air processing group 2.
In a kind of specific embodiment of the present invention, this control method comprises the following steps:
(1), according to outdoor air humiture parameter and the requirement of indoor temperature and humidity technic index, determine the operational mode of Air-Cooled Heat Pump Unit: refrigeration mode, heating mode;
(2), according to the corresponding high dew-point temperature of tobacco mellowing process environments, set the freezing supply water temperature of described recovery type heat Air-Cooled Heat Pump Unit;
(3) according to the temperature accuracy area requirement in each tobacco mellowing region, regulate the described floor air-supply adjusting air valve in this region, described floor return air adjusting air valve aperture, when temperature is within the scope of required precision, close described floor return air adjusting air valve, described floor air-supply adjusting air valve is adjusted to minimum aperture, maintains the pressure-fired in this alcoholization region;
(4) according to the maximum temperature deviation in tobacco mellowing region, the wind pushing temperature of the described combined air processing group of revision sets value in real time, according to the electric three passes valve opening of wind pushing temperature set point adjustment recuperation of heat reheater, here, maximum temperature deviation comprise air outlet with away from the temperature deviation at air outlet place, can be also the air outlet that causes of other reasons and the maximum temperature deviation of other positions, tobacco mellowing region;
(5) according to the maximum relative humidity deviation in tobacco mellowing region, the air-supply water capacity of the described combined air processing group of revision sets value in real time, according to the first electric three passes valve opening of air-supply water capacity set point adjustment surface cooler, here, maximum relative humidity deviation comprise air outlet with away from the deviation at air outlet place, can be also the air outlet that causes of other reasons and the maximum relative humidity deviation of other positions, tobacco mellowing region;
(6) according to header pipe's pressure of combined air processing group, regulate the running frequency of pressure fan, realize the energy-saving and frequency-variable operation of air-conditioning draught fan.
The heat recovery function for the energy-saving central air conditioning dehumidification system of tobacco mellowing warehouse with system high efficiency of the present invention, the condensation heat that can utilize recovery type heat Air-Cooled Heat Pump Unit 1 to produce in dehumidification process is prepared hot water, and hot water is sent into roof type combined air processing group 2, temperature after dehumidifying may be heated by lower air again, make up in air because of dehumidifying and cooling institute dispersed heat, both can meet tobacco leaf alcoholizing pool to air dewetting after the also requirement of the higher alcoholization temperature of needs, the heat energy that has also effectively utilized fully system operation to discharge.
The energy-saving central air conditioning dehumidification system of tobacco leaf warehouse of the present invention, many technology disadvantages of traditional tobacco leaf alcoholizing pool distributing dehumidification system have been overcome, a kind of tobacco leaf alcoholizing pool environment controlling technique thinking of innovation has been proposed, not only targetedly humiture parameter in storehouse is optimized to control, also, in the quantity and the investment that have to a certain degree reduced equipment configuration, reduced workload and the cost of labor of system maintenance.
The energy-saving central air conditioning dehumidification system of tobacco leaf warehouse of the present invention, except the tobacco leaf alcoholizing pool applicable to many floors, also applicable to the tobacco mellowing flat bed storehouse of multizone 1; 2 have other warehouses of humiture technological requirement etc.
Claims (7)
1. for an energy-saving central air conditioning dehumidification system for tobacco mellowing warehouse, it is characterized in that comprising:
For many floors or multizone tobacco mellowing warehouse, described system concentrates on roof or the outdoor air dewetting equipment that arranges, this equipment comprises: combined air processing group (2) and recovery type heat Air-Cooled Heat Pump Unit (1), and described combined air processing group is sequentially provided with new air-return mixing section (2.1.1), filter (2.1.2), surface cooler (2.1.3), recuperation of heat reheater (2.1.4) and pressure fan (2.1.5) from return air inlet to air outlet; Described recovery type heat Air-Cooled Heat Pump Unit (1) is connected with combined air processing group (2) for water return pipeline (1.2) for water return pipeline (1.1), recuperation of heat by freezing, and simultaneously for it provides Cooling and Heat Source, wherein, the described freezing surface cooler (2.1.3) that connects described recovery type heat Air-Cooled Heat Pump Unit and described assembled air-conditioner unit for water return pipeline (1.1), described recuperation of heat connects the recuperation of heat reheater (2.1.4) of described recovery type heat Air-Cooled Heat Pump Unit and described assembled air-conditioner unit for water return pipeline (1.2).
Described combined air processing group (2) is delivered to each floor or each tobacco mellowing storage region by air-supply main (3.1), blowpipe (3.2) by the air after processing, and draw back to described combined air processing group (2) through return air arm (4.2), return air main (4.1), realize the flow circuit of air.
2. energy-saving central air conditioning dehumidification system according to claim 1, it is characterized in that: described combined air processing group (2) is equipped with respectively floor air-supply adjusting air valve (3.3) and floor return air adjusting air valve (4.3) to the blowpipe (3.2) in each floor or each tobacco mellowing storage region, return air arm (4.2), to realize the dehumidifying in turn in each floor or each tobacco mellowing storage region, or variable air volume running.
3. energy-saving central air conditioning dehumidification system according to claim 2, is characterized in that: described combined air processing group also comprises fan frequency converter.
4. energy-saving central air conditioning dehumidification system according to claim 1, is characterized in that: described combined air processing group is provided with air-supply electronic cut-off air-valve (2.1.7) and the electronic cut-off air-valve of return air (2.1.8) at air outlet, return air inlet.
5. energy-saving central air conditioning dehumidification system according to claim 1, it is characterized in that: described freezing the first electric T-shaped valve (1.1.1) that is provided with reconciliation statement cooler chilled-water flow for water return pipeline (1.1), its adjustable ground is communicated with flow pipe line with return piping.
6. energy-saving central air conditioning dehumidification system according to claim 1, it is characterized in that: described recuperation of heat is provided with the second electric T-shaped valve (1.2.1) that regulates recuperation of heat reheater hot water flow for water return pipeline (1.2), its adjustable ground is communicated with flow pipe line with return piping.
7. utilize system described in claim 1 to 6 any one for an air conditioner dehumidification control method for tobacco mellowing warehouse, to it is characterized in that, comprise the following steps:
(1), according to outdoor air humiture parameter and the requirement of indoor temperature and humidity technic index, determine the operational mode of Air-Cooled Heat Pump Unit: refrigeration mode, heating mode;
(2), according to the corresponding high dew-point temperature of tobacco mellowing process environments, set the freezing supply water temperature of described recovery type heat Air-Cooled Heat Pump Unit;
(3) according to the temperature accuracy area requirement in each tobacco mellowing region, regulate the described floor air-supply adjusting air valve in this region, described floor return air adjusting air valve aperture, when temperature is within the scope of required precision, close described floor return air adjusting air valve, described floor air-supply adjusting air valve is adjusted to minimum aperture, maintains the pressure-fired in this alcoholization region;
(4), according to the maximum temperature deviation in tobacco mellowing region, revise in real time the wind pushing temperature setting value of described combined air processing group, according to the electric three passes valve opening of wind pushing temperature set point adjustment recuperation of heat reheater;
(5), according to the interior maximum relative humidity deviation in tobacco mellowing region, revise in real time the air-supply water capacity setting value of described combined air processing group, according to the first electric three passes valve opening of air-supply water capacity set point adjustment surface cooler;
(6) according to header pipe's pressure of combined air processing group, regulate the running frequency of pressure fan, realize the energy-saving and frequency-variable operation of air-conditioning draught fan.
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| CN107588514A (en) * | 2017-09-26 | 2018-01-16 | 湖北中航安智技术有限公司 | A kind of air-conditioning humiture decoupled system and its control method |
| CN112189492A (en) * | 2020-12-07 | 2021-01-08 | 国家粳稻工程技术研究中心 | Indoor dehumidification system in low-temperature high-humidity environment |
| CN112344468A (en) * | 2020-11-12 | 2021-02-09 | 河北白沙烟草有限责任公司保定卷烟厂 | Constant temperature and humidity equipment for fermentation chamber |
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| CN113847661A (en) * | 2021-09-14 | 2021-12-28 | 浙江中烟工业有限责任公司 | Energy-saving system of air conditioner for alcoholization warehouse of cigarette factory |
| CN114391669A (en) * | 2022-01-27 | 2022-04-26 | 安徽中烟工业有限责任公司 | Alcoholization system for improving alcoholization quality of tobacco lamina |
| CN115900012A (en) * | 2022-12-15 | 2023-04-04 | 广东省建筑设计研究院有限公司 | Multistage air treatment method and equipment for realizing ultrahigh-precision control |
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| CN113847661A (en) * | 2021-09-14 | 2021-12-28 | 浙江中烟工业有限责任公司 | Energy-saving system of air conditioner for alcoholization warehouse of cigarette factory |
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| CN115900012A (en) * | 2022-12-15 | 2023-04-04 | 广东省建筑设计研究院有限公司 | Multistage air treatment method and equipment for realizing ultrahigh-precision control |
| CN116026029A (en) * | 2023-01-10 | 2023-04-28 | 中南建筑设计院股份有限公司 | Two-stage heat recovery purifying unit |
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