CN107036428A - Solar energy and air source heat pump double source joint drying system - Google Patents
Solar energy and air source heat pump double source joint drying system Download PDFInfo
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- CN107036428A CN107036428A CN201710375066.2A CN201710375066A CN107036428A CN 107036428 A CN107036428 A CN 107036428A CN 201710375066 A CN201710375066 A CN 201710375066A CN 107036428 A CN107036428 A CN 107036428A
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- 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
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
- A23N12/00—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts
- A23N12/08—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts for drying or roasting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/30—Solar heat collectors using working fluids with means for exchanging heat between two or more working fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
- F24S50/40—Arrangements for controlling solar heat collectors responsive to temperature
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- F26B21/50—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/85—Food storage or conservation, e.g. cooling or drying
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- Drying Of Solid Materials (AREA)
Abstract
本发明公开了一种太阳能与空气源热泵双源联合干燥系统，包括有太阳能集热器、空气源热泵、全热交换器、管壳式换热器、蓄热水箱、循环风机、排湿风机，空气源热泵包括有室内冷凝器、室外蒸发器。本发明能够充分利用太阳能源和电能，当太阳能源过强时，通过蓄热水箱储存，当太阳能源不足时，通过蓄热水箱和使用空气源热泵加热为辅助热源，使系统能够获得稳定控温干燥效果，具有节能优点。本发明能够弥补传统干燥法受天气影响大、不卫生、品质无法保证的缺点，余热回收及利用方面更加完善。
The invention discloses a dual-source combined drying system of solar energy and air source heat pump, which includes a solar heat collector, an air source heat pump, a total heat exchanger, a shell-and-tube heat exchanger, a hot water storage tank, a circulating fan, and a dehumidifier. The fan and the air source heat pump include an indoor condenser and an outdoor evaporator. The invention can make full use of solar energy and electric energy. When the solar energy is too strong, it is stored in a hot water tank. When the solar energy is insufficient, it is heated by the hot water tank and an air source heat pump as an auxiliary heat source, so that the system can be stabilized. The temperature control drying effect has the advantages of energy saving. The invention can make up for the shortcomings of the traditional drying method, which is greatly affected by the weather, is unsanitary, and cannot guarantee the quality, and is more perfect in the recovery and utilization of waste heat.
Description
技术领域technical field
本发明涉及一种太阳能与空气源热泵双源联合干燥系统，属于太阳能利用领域。The invention relates to a dual-source combined drying system of solar energy and air source heat pump, which belongs to the field of solar energy utilization.
背景技术Background technique
太阳能是一种清洁、高效和永不衰竭的新能源，所以各国政府将太阳能资源利用作为国家可持续发展战略的重要内容。干燥是一个高耗能的行业。据统计，法国、英国、瑞典等发达国家，高达12％的工业能耗用于千燥工艺。在各种工业干燥能耗中，农产品、食品的干燥能耗仅次于造纸业，位居第二位，中国干燥操作的能耗约占总能耗的10％。因此对干燥行业的节能已成为一种势在必行的趋势。太阳能作为一种高效的、清洁无污染、取之不尽、用之不竭的新能源，将太阳能集热器与热泵联合，既充分利用了太阳能，节约了能源，又利用热泵弥补了太阳能间歇性的缺点。为果蔬的干燥提供了一个稳定且持续热源。Solar energy is a clean, efficient and inexhaustible new energy source, so the governments of various countries regard the utilization of solar energy resources as an important part of the national sustainable development strategy. Drying is an energy-intensive industry. According to statistics, in France, Britain, Sweden and other developed countries, up to 12% of industrial energy consumption is used for drying processes. Among all kinds of industrial drying energy consumption, the energy consumption of drying agricultural products and food ranks second only to the paper industry, and the energy consumption of drying operations in China accounts for about 10% of the total energy consumption. Therefore, energy saving in the drying industry has become an imperative trend. As an efficient, clean, non-polluting, inexhaustible and inexhaustible new energy source, solar energy is combined with a solar collector and a heat pump, which not only makes full use of solar energy, saves energy, but also uses the heat pump to make up for the intermittent solar energy. sexual shortcomings. It provides a stable and continuous heat source for the drying of fruits and vegetables.
发明内容Contents of the invention
本发明的技术解决问题：温度不易控制，烘干不均匀，干燥时间长，耗能高，产品质量差，易造成果蔬变质、有营养成分损失严重、、干燥效率低的缺点。为达到缩短果蔬干燥周期、降低干燥成本、提高干燥后果蔬的品质，本发明将太阳能集热器、蓄热水箱与热泵联合，既充分利用了太阳能，节约了能源，又利用热泵弥补了太阳能间歇性的缺点。实现高效、高品质的果蔬干燥。最重要的是，三通阀在风管中的运用，可以使太阳能得到最高效的利用。The technology of the present invention solves the following problems: difficult temperature control, uneven drying, long drying time, high energy consumption, poor product quality, easy to cause deterioration of fruits and vegetables, serious loss of nutrients, and low drying efficiency. In order to shorten the drying cycle of fruits and vegetables, reduce drying costs, and improve the quality of dried vegetables, the invention combines solar collectors, heat storage tanks and heat pumps, which not only makes full use of solar energy, saves energy, but also uses heat pumps to make up for solar energy. Intermittent disadvantages. Realize efficient and high-quality drying of fruits and vegetables. Most importantly, the application of the three-way valve in the air duct can make the most efficient use of solar energy.
本发明采用的技术方案是：The technical scheme adopted in the present invention is:
太阳能与空气源热泵双源联合干燥系统，其特征在于：包括有太阳能集热器、空气源热泵、全热交换器、管壳式换热器、蓄热水箱、循环风机、排湿风机，空气源热泵包括有室内冷凝器、室外蒸发器，全热交换器的四个换热端口分别与新风入口一、风管二、风管三、风管六连接，风管二的另一端与干燥房内空间连通，风管六中设有排湿风机，风管六的另一端与室外蒸发器连通，风管三的另一端与太阳能集热器的回风口连接，风管三同时还与风管四的一端连接，风管三、风管四、全热交换器三者之间设有三通阀，风管四的另一端与风管五的中部连接，风管四与风管五垂直布置，风管五的顶端与太阳能集热器的出风口连接，风管五与太阳能集热器的连接处设有循环风机，风管五的底端与管壳式换热器的空气入端连接，管壳式换热器的水端与蓄热水箱连接，管壳式换热器的空气出端与空气源热泵的室内冷凝器连接，管壳式换热器的空气出端同时还与空气源热泵的室内冷凝器连接，空气源热泵的室内冷凝器与干燥房内空间连通。The dual-source combined drying system of solar energy and air source heat pump is characterized in that it includes solar collectors, air source heat pumps, total heat exchangers, shell and tube heat exchangers, hot water storage tanks, circulation fans, and humidity exhaust fans. The air source heat pump includes an indoor condenser and an outdoor evaporator. The four heat exchange ports of the total heat exchanger are respectively connected to the fresh air inlet 1, air duct 2, air duct 3, and air duct 6. The other end of the air duct 2 is connected to the drying The space in the room is connected, and there is a dehumidification fan in the air duct six. One end of pipe four is connected, and a three-way valve is provided between air pipe three, air pipe four, and the total heat exchanger. The other end of air pipe four is connected to the middle of air pipe five, and air pipe four and air pipe five are vertically arranged , the top of the air duct five is connected to the air outlet of the solar collector, the connection between the air duct five and the solar collector is provided with a circulating fan, and the bottom end of the air duct five is connected to the air inlet of the shell-and-tube heat exchanger , the water end of the shell-and-tube heat exchanger is connected to the heat storage tank, the air outlet of the shell-and-tube heat exchanger is connected to the indoor condenser of the air source heat pump, and the air outlet of the shell-and-tube heat exchanger is also connected to the The indoor condenser of the air source heat pump is connected, and the indoor condenser of the air source heat pump communicates with the interior space of the drying room.
所述的太阳能与空气源热泵双源联合干燥系统，其特征在于：所述管壳式换热器与蓄热水箱之间设有水泵，太阳能集热器的回风口设有风阀。The dual-source combined drying system of solar energy and air source heat pump is characterized in that: a water pump is provided between the shell-and-tube heat exchanger and the heat storage tank, and an air valve is provided at the air return port of the solar heat collector.
所述的太阳能与空气源热泵双源联合干燥系统，其特征在于：在太阳辐射较强，太阳能集热器温度高于干燥所需温度时，关闭三通阀，开启管壳式换热器与蓄热水箱之间的水泵，打开循环风机和太阳能集热器的风阀，新风经新风入口一、全热交换器、与房间内进入到集热器回风口的回风混合，在循环风机的作用下，一同进入太阳能集热器加热后，通过风管五，进入管壳式交换器，在冷却过热空气至合适干燥温度的同时，将多余的热量通过管壳式换热器储存在蓄热水箱里，经过管壳式换热器的热空气进入干燥房内空间；干燥后的高温高湿气体一部分通过风管二，流经全热交换器，用其剩余热量加热外界新风后从风管六被排湿风机排出，另一部分高温高湿气体从太阳能集热器的回风口进入，与从风管三流出的新风混合，经太阳能集热器的加热后继续循环使用。The dual-source combined drying system of solar energy and air source heat pump is characterized in that: when the solar radiation is strong and the temperature of the solar collector is higher than the temperature required for drying, the three-way valve is closed, and the shell-and-tube heat exchanger and the The water pump between the heat storage tanks opens the circulation fan and the air valve of the solar collector, and the fresh air passes through the fresh air inlet 1, the total heat exchanger, and mixes with the return air entering the return air outlet of the collector in the room, and then passes through the circulation fan. Under the action of the solar heat collector, it enters the solar collector to be heated, and then enters the shell-and-tube exchanger through the air duct five. While cooling the superheated air to a suitable drying temperature, the excess heat is stored in the storage tank through the shell-and-tube heat exchanger. In the hot water tank, the hot air passing through the shell-and-tube heat exchanger enters the space in the drying room; part of the dried high-temperature and high-humidity gas passes through the air duct 2, flows through the total heat exchanger, and uses its residual heat to heat the fresh air from the outside and then from Duct 6 is discharged by the humidity exhaust fan, and another part of high-temperature and high-humidity gas enters from the return air outlet of the solar collector, mixes with the fresh air flowing out of duct 3, and continues to be recycled after being heated by the solar collector.
所述的太阳能与空气源热泵双源联合干燥系统，其特征在于：当太阳能集热器出口温度在干燥所需温度的合适温度范围内，关闭三通阀，关闭管壳式换热器与蓄热水箱之间的水泵，打开循环风机和太阳能集热器的风阀，新风入口一、全热交换器、与房间内进入到集热器回风口的回风混合，在循环风机的作用下，一同进入太阳能集热器加热后，通过风管五、管壳式交换器，进入干燥房内空间；干燥后的高温高湿气体一部分通过风管二，流经全热交换器，用其剩余热量加热外界新风后从风管六被排湿风机排出，另一部分高温高湿气体从太阳能集热器的回风口进入，与从风管三流出的新风混合，经太阳能集热器的加热后继续循环使用。The dual-source combined drying system of solar energy and air source heat pump is characterized in that: when the outlet temperature of the solar collector is within the appropriate temperature range required for drying, the three-way valve is closed, and the shell-and-tube heat exchanger and the storage tank are closed. The water pump between the hot water tanks opens the air valve of the circulating fan and the solar collector, the fresh air inlet 1, the total heat exchanger, and the return air entering the return air outlet of the collector in the room are mixed, under the action of the circulating fan , and enter the solar collector to be heated together, and enter the space in the drying room through the air duct five and the shell-and-tube exchanger; part of the dried high-temperature and high-humidity gas passes through the air duct two, flows through the total heat exchanger, and uses the remaining After the heat heats the outside fresh air, it is discharged from the air duct six by the humidity exhaust fan, and another part of high-temperature and high-humidity gas enters from the return air port of the solar collector, mixes with the fresh air flowing out of the air duct three, and continues to heat up after being heated by the solar collector. recycle.
所述的太阳能与空气源热泵双源联合干燥系统，其特征在于：在太阳辐射较弱，太阳能集热器温度未达到干燥所需温度时，关闭太阳能集热器的风阀以及循环风机。若蓄热水箱温度高于蓄热水箱入口新风的温度时，打开三通阀，开启管壳式换热器与蓄热水箱之间的水泵；新风经过新风入口一、全热交换器后，直接从三通阀通过，进入风管四，再流经风管五，通过管壳式换热器与蓄热水箱中的热水之间进行换热，若经管壳式换热器加热后的新风达到要求的干燥温度，则直接送入干燥室；若仍未达到所需温度，则被送至空气源热泵的室内冷凝器，空气源热泵的室内冷凝器将空气加热后送入干燥房内空间；若蓄热水箱温度低于蓄热水箱入口新风的温度时，关闭管壳式换热器与蓄热水箱之间的水泵，新风经过新风入口一、全热交换器后，直接从三通阀通过，进入风管四，再流经风管五，通过管壳式换热器达到空气源热泵的冷凝器端，加热后送入室内。干燥后的高温高湿气体通过风管二，流经全热交换器，用其剩余热量加热外界新风后从风管六被排湿风机排出。The dual-source combined drying system of solar energy and air source heat pump is characterized in that: when the solar radiation is weak and the temperature of the solar collector does not reach the temperature required for drying, the air valve of the solar collector and the circulation fan are closed. If the temperature of the hot water storage tank is higher than the temperature of the fresh air at the inlet of the hot water storage tank, open the three-way valve and turn on the water pump between the shell-and-tube heat exchanger and the hot water storage tank; the fresh air passes through the fresh air inlet 1. Total heat exchanger Finally, it directly passes through the three-way valve, enters the air pipe four, and then flows through the air pipe five, and exchanges heat with the hot water in the heat storage tank through the shell-and-tube heat exchanger. After the heated fresh air reaches the required drying temperature, it will be sent directly to the drying room; if it still does not reach the required temperature, it will be sent to the indoor condenser of the air source heat pump, and the indoor condenser of the air source heat pump will heat the air and send it into the Dry the space in the room; if the temperature of the hot water storage tank is lower than the temperature of the fresh air at the inlet of the hot water storage tank, turn off the water pump between the shell-and-tube heat exchanger and the hot water storage tank, and the fresh air will pass through the fresh air inlet 1. Total heat exchanger Finally, it directly passes through the three-way valve, enters the air pipe four, then flows through the air pipe five, and reaches the condenser end of the air source heat pump through the shell-and-tube heat exchanger, and is sent into the room after being heated. The dried high-temperature and high-humidity gas passes through the second air duct, flows through the total heat exchanger, uses its residual heat to heat the external fresh air, and then is discharged from the sixth air duct by the dehumidification fan.
所述的太阳能与空气源热泵双源联合干燥系统，其特征在于：所述排湿风机外增加有一可以将排出的空气导向空气源热泵的室外蒸发器的挡板，挡板竖立在除湿风机和室外蒸发器前，二次吸收余热。The dual-source combined drying system of solar energy and air source heat pump is characterized in that: a baffle that can guide the discharged air to the outdoor evaporator of the air source heat pump is added outside the dehumidification fan, and the baffle is erected between the dehumidification fan and the air source heat pump. Before the outdoor evaporator, the waste heat is absorbed twice.
本发明根据太阳能集热器温度是否达到果蔬干燥的适宜温度来决定三通阀门的开启，以此合理控制了空气源热泵是否启用，达到了节能目的。The invention determines the opening of the three-way valve according to whether the temperature of the solar heat collector reaches the suitable temperature for drying fruits and vegetables, so as to reasonably control whether the air source heat pump is enabled, and achieves the purpose of energy saving.
本发明根据太阳能集热器温度知否达到果蔬干燥的适宜温度来决定水泵的开启，既起到了加热或冷却空气的目的，又通过储存热量的形式，节约了能耗。The invention determines whether the temperature of the solar heat collector reaches the suitable temperature for drying fruits and vegetables to determine whether the water pump is turned on, which not only serves the purpose of heating or cooling the air, but also saves energy consumption by storing heat.
与现有技术相比，本发明的优点在于：Compared with the prior art, the present invention has the advantages of:
本发明能够充分利用太阳能源和电能，当太阳能源不足时使用空气源热泵加热为辅助热源，为果蔬的干燥提供了一个稳定且持续热源，具有节能优点。The invention can make full use of solar energy and electric energy. When the solar energy is insufficient, the air source heat pump is used as an auxiliary heat source to provide a stable and continuous heat source for drying fruits and vegetables, and has the advantage of energy saving.
本发明能够弥补传统干燥法受天气影响大、不卫生、品质无法保证的缺点，余热回收及利用方面更加完善。The invention can make up for the shortcomings of the traditional drying method, which is greatly affected by the weather, is unsanitary, and cannot guarantee the quality, and is more perfect in the recovery and utilization of waste heat.
附图说明Description of drawings
图1为本发明的部分结构的主视图。Fig. 1 is the front view of the partial structure of the present invention.
图2为本发明风管部分的俯视图。Fig. 2 is a top view of the air duct part of the present invention.
图3为本发明的轴测图。Figure 3 is an isometric view of the present invention.
图4为本发明的整体结构的主视图。Fig. 4 is a front view of the overall structure of the present invention.
具体实施方式detailed description
如图1-4所示，太阳能与空气源热泵双源联合干燥系统，包括有太阳能集热器7、空气源热泵、全热交换器8、管壳式换热器9、蓄热水箱10、循环风机11、排湿风机12，空气源热泵包括有室内冷凝器13、室外蒸发器17，全热交换器8的四个换热端口分别与新风入口1、风管2、风管3、风管6连接，风管2的另一端与干燥房内空间连通，风管6中设有排湿风机12，风管6的另一端与室外蒸发器连通，风管3的另一端与太阳能集热器7的回风口14连接，风管3同时还与风管4的一端连接，风管3、风管4、全热交换器8三者之间设有三通阀15，风管4的另一端与风管5的中部连接，风管4与风管5垂直布置，风管5的顶端与太阳能集热器7的出风口连接，风管5与太阳能集热器7的连接处设有循环风机11，风管5的底端与管壳式换热器9的空气入端连接，管壳式换热器9的水端与蓄热水箱10连接，管壳式换热器9的空气出端与干燥房内空间连通，管壳式换热器9的空气出端同时还与空气源热泵的室内冷凝器13连接，空气源热泵的室内冷凝器13与干燥房内空间连通。As shown in Figure 1-4, the dual-source combined drying system of solar energy and air source heat pump includes a solar collector 7, an air source heat pump, a total heat exchanger 8, a shell-and-tube heat exchanger 9, and a water storage tank 10 , circulation fan 11, dehumidification fan 12, the air source heat pump includes an indoor condenser 13, an outdoor evaporator 17, and the four heat exchange ports of the total heat exchanger 8 are respectively connected to the fresh air inlet 1, the air duct 2, the air duct 3, The air duct 6 is connected, the other end of the air duct 2 communicates with the space in the drying room, the air duct 6 is provided with a dehumidifying blower 12, the other end of the air duct 6 communicates with the outdoor evaporator, and the other end of the air duct 3 communicates with the solar collector. The air return port 14 of the heater 7 is connected, and the air duct 3 is also connected with one end of the air duct 4. A three-way valve 15 is arranged between the air duct 3, the air duct 4, and the total heat exchanger 8. The other end of the air duct 4 One end is connected to the middle of the air duct 5, the air duct 4 and the air duct 5 are vertically arranged, the top of the air duct 5 is connected to the air outlet of the solar heat collector 7, and the connection between the air duct 5 and the solar heat collector 7 is provided with a circulation The fan 11, the bottom end of the air duct 5 is connected to the air inlet end of the shell-and-tube heat exchanger 9, the water end of the shell-and-tube heat exchanger 9 is connected to the heat storage tank 10, and the air of the shell-and-tube heat exchanger 9 The outlet end communicates with the interior space of the drying room, and the air outlet end of the shell-and-tube heat exchanger 9 is also connected with the indoor condenser 13 of the air source heat pump, and the indoor condenser 13 of the air source heat pump communicates with the interior space of the drying room.
管壳式换热器9与蓄热水箱10之间设有水泵，太阳能集热器7的回风口14设有风阀。A water pump is provided between the shell-and-tube heat exchanger 9 and the hot water storage tank 10, and an air valve is provided at the air return port 14 of the solar heat collector 7.
在太阳辐射较强，太阳能集热器7温度高于干燥所需温度时，关闭三通阀15，开启管壳式换热器9与蓄热水箱10之间的水泵，打开循环风机11和太阳能集热器7的风阀，新风经新风入口1、全热交换器8、与房间内进入到集热器回风口14的回风混合，在循环风机11的作用下，一同进入太阳能集热器7加热后，通过风管5，进入管壳式交换器9，在冷却过热空气至合适干燥温度的同时，将多余的热量通过管壳式换热器9储存在蓄热水箱10里，经过管壳式换热器9的热空气进入干燥房内空间；干燥后的高温高湿气体一部分通过风管2，流经全热交换器8，用其剩余热量加热外界新风后从风管6被排湿风机12排出，另一部分高温高湿气体从太阳能集热器7的回风口进入，与从风管3流出的新风混合，经太阳能集热器7的加热后继续循环使用。When the solar radiation is strong and the temperature of the solar collector 7 is higher than the required drying temperature, the three-way valve 15 is closed, the water pump between the shell-and-tube heat exchanger 9 and the heat storage tank 10 is opened, and the circulation fan 11 and the heat storage tank 10 are opened. The air valve of the solar heat collector 7, the fresh air passes through the fresh air inlet 1, the total heat exchanger 8, and is mixed with the return air that enters the heat collector return air outlet 14 in the room, and enters the solar heat collection together under the action of the circulating fan 11 After being heated by the heat exchanger 7, it enters the shell-and-tube exchanger 9 through the air pipe 5, and while cooling the superheated air to a suitable drying temperature, the excess heat is stored in the heat storage tank 10 through the shell-and-tube heat exchanger 9, The hot air passing through the shell-and-tube heat exchanger 9 enters the space in the drying room; part of the dried high-temperature and high-humidity gas passes through the air duct 2 and flows through the total heat exchanger 8, and uses its residual heat to heat the fresh air from the outside and then flows from the air duct 6. Exhausted by the humidity exhaust fan 12, another part of high temperature and high humidity gas enters from the air return port of the solar collector 7, mixes with the fresh air flowing out from the air duct 3, and continues to be recycled after being heated by the solar collector 7.
当太阳能集热器7出口温度在干燥所需温度的合适温度范围内，关闭三通阀15，关闭管壳式换热器9与蓄热水箱10之间的水泵，打开循环风机11和太阳能集热器7的风阀，新风入口1、全热交换器8、与房间内进入到集热器回风口14的回风混合，在循环风机11的作用下，一同进入太阳能集热器7加热后，通过风管5、管壳式交换器9，进入干燥房内空间；干燥后的高温高湿气体一部分通过风管2，流经全热交换器8，用其剩余热量加热外界新风后从风管6被排湿风机12排出，另一部分高温高湿气体从太阳能集热器7的回风口进入，与从风管3流出的新风混合，经太阳能集热器7的加热后继续循环使用。When the outlet temperature of the solar heat collector 7 is within the suitable temperature range of the drying required temperature, close the three-way valve 15, close the water pump between the shell-and-tube heat exchanger 9 and the heat storage tank 10, and turn on the circulation fan 11 and the solar heat storage tank. The air valve of the heat collector 7, the fresh air inlet 1, the total heat exchanger 8, and the return air entering the heat collector return air outlet 14 in the room are mixed, and under the action of the circulating fan 11, they enter the solar heat collector 7 for heating Finally, through the air duct 5 and the shell-and-tube exchanger 9, it enters the space in the drying room; part of the dried high-temperature and high-humidity gas passes through the air duct 2, flows through the total heat exchanger 8, and uses its residual heat to heat the fresh air from the outside. The air duct 6 is discharged by the dehumidification blower 12, and another part of high-temperature and high-humidity gas enters from the air return port of the solar collector 7, mixes with the fresh air flowing out of the air duct 3, and continues to be recycled after being heated by the solar collector 7.
在太阳辐射较弱，太阳能集热器7温度未达到干燥所需温度时，关闭循环风机11以及集热器7的风阀。若蓄热水箱温度高于蓄热水箱入口新风的温度时，打开三通阀，开启管壳式换热器与蓄热水箱之间的水泵，启用热泵进行加热，打开三通阀15，开启管壳式换热器9与蓄热水箱10之间的水泵，新风经过新风入口1、全热交换器8后，直接从三通阀15通过，进入风管4，再流经风管5，通过管壳式换热器9与蓄热水箱10中的热水之间进行换热，若经管壳式换热器加热后的新风达到要求的干燥温度，则直接送入干燥室；若仍未达到所需温度，则被送至空气源热泵的室内冷凝器13，空气源热泵的室内冷凝器13将空气加热后送入干燥房内空间；若蓄热水箱温度低于蓄热水箱入口新风的温度时，关闭管壳式换热器9与蓄热水箱10之间的水泵，新风经过新风入口1、全热交换器8后，直接从三通阀15通过，进入风管4，再流经风管5，通过管壳式换热器9达到空气源热泵的冷凝器13，加热后送入室内。干燥后的高温高湿气体通过风管2，流经全热交换器8，用其剩余热量加热外界新风后从风管6被排湿风机12排出。When the solar radiation is weak and the temperature of the solar heat collector 7 does not reach the required temperature for drying, the air valve of the circulation fan 11 and the heat collector 7 is closed. If the temperature of the heat storage tank is higher than the temperature of the fresh air at the inlet of the heat storage tank, open the three-way valve, turn on the water pump between the shell-and-tube heat exchanger and the heat storage tank, activate the heat pump for heating, and open the three-way valve 15 , turn on the water pump between the shell-and-tube heat exchanger 9 and the hot water storage tank 10, the fresh air passes through the fresh air inlet 1 and the total heat exchanger 8, then directly passes through the three-way valve 15, enters the air duct 4, and then flows through the air The tube 5 exchanges heat with the hot water in the hot water storage tank 10 through the shell-and-tube heat exchanger 9. If the fresh air heated by the shell-and-tube heat exchanger reaches the required drying temperature, it is directly sent into the drying chamber ; If the required temperature is still not reached, it will be sent to the indoor condenser 13 of the air source heat pump, and the indoor condenser 13 of the air source heat pump will heat the air and send it into the space in the drying room; When the temperature of the fresh air at the inlet of the hot water tank is reached, the water pump between the shell-and-tube heat exchanger 9 and the heat storage tank 10 is turned off. After the fresh air passes through the fresh air inlet 1 and the total heat exchanger 8, it passes directly through the three-way valve 15 and enters The air duct 4 flows through the air duct 5, and reaches the condenser 13 of the air source heat pump through the shell-and-tube heat exchanger 9, and is sent into the room after being heated. The dried high-temperature and high-humidity gas passes through the air pipe 2, flows through the total heat exchanger 8, uses its residual heat to heat the external fresh air, and then is discharged from the air pipe 6 by the dehumidification fan 12.
除湿风机12外增加有一可以将排出的空气导向空气源热泵的室外蒸发器17的挡板16，挡板16竖立在除湿风机12和室外蒸发器前，二次吸收排湿风机排出的余热。Add a baffle plate 16 that can lead the discharged air to the outdoor evaporator 17 of the air source heat pump outside the dehumidification fan 12. The baffle plate 16 is erected before the dehumidification fan 12 and the outdoor evaporator, and absorbs the waste heat discharged by the dehumidification fan for the second time.
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