CN103471374A - Solar auxiliary heat-pump drying system - Google Patents
Solar auxiliary heat-pump drying system Download PDFInfo
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- CN103471374A CN103471374A CN2013104530604A CN201310453060A CN103471374A CN 103471374 A CN103471374 A CN 103471374A CN 2013104530604 A CN2013104530604 A CN 2013104530604A CN 201310453060 A CN201310453060 A CN 201310453060A CN 103471374 A CN103471374 A CN 103471374A
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- 238000001035 drying Methods 0.000 title claims abstract description 25
- 230000009977 dual effect Effects 0.000 claims description 48
- 239000003507 refrigerant Substances 0.000 claims description 22
- 238000007791 dehumidification Methods 0.000 abstract description 15
- 238000009833 condensation Methods 0.000 abstract description 9
- 230000005494 condensation Effects 0.000 abstract description 9
- 230000008929 regeneration Effects 0.000 abstract description 9
- 238000011069 regeneration method Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 230000002427 irreversible effect Effects 0.000 abstract 1
- 239000013589 supplement Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 9
- 230000008439 repair process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 206010037660 Pyrexia Diseases 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
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Abstract
本发明公开一种太阳能辅助热泵干燥系统。本发明包括干燥室、热泵，还包括太阳能溶液再生器、内热/绝热两用型填料塔和绝热型填料塔；本发明提供了一种在全年不同季节能够充分利用太阳能的热泵干燥系统，在太阳能充裕的情况下利用太阳能对除湿后的稀溶液进行加热并再生，太阳能不足时利用热泵辅以太阳能实现对空气的除湿及加热过程，保证系统能够高效稳定的运行。采用溶液除湿方式时，溶液与空气直接接触，换热温差小，不可逆损失较小，可解决传统冷凝除湿方式存在的能耗较大问题；同时，溶液再生热以及部分加热空气的热量来自于太阳能，这部分能量可无偿利用，使得该系统在全年运行时节能效果显著。
The invention discloses a solar energy auxiliary heat pump drying system. The present invention includes a drying chamber, a heat pump, and also includes a solar solution regenerator, an internal heat/insulation dual-purpose packed tower and an adiabatic packed tower; the present invention provides a heat pump drying system that can fully utilize solar energy in different seasons throughout the year. When solar energy is sufficient, solar energy is used to heat and regenerate the dehumidified dilute solution. When solar energy is insufficient, a heat pump is used to supplement solar energy to dehumidify and heat the air to ensure efficient and stable operation of the system. When the solution dehumidification method is used, the solution is in direct contact with the air, the heat transfer temperature difference is small, and the irreversible loss is small, which can solve the problem of large energy consumption in the traditional condensation dehumidification method; at the same time, the solution regeneration heat and part of the heat of the heated air come from solar energy , this part of energy can be used free of charge, making the system have a significant energy-saving effect during the year-round operation.
Description
Technical field
The invention belongs to the drying system technical field, be specifically related to a kind of solar-assisted heat pump drying system that utilizes solution dehumidification/heating technique.
Background technology
Because heat pump drier can be recycled airborne heat effectively, so its utilization is more and more extensive.In the heat pump drier hothouse, material is carried out to dried air humidity larger, traditional heat pump drier adopts the method for dehumidification by condensation to be dehumidified to air: from hothouse, humid air out first is reduced to air themperature below dew-point temperature and separates out steam through evaporator with heat pump, and then the dry air after to dehumidifying heats up and finally sends into hothouse material is carried out to drying through heat pump condenser.So humid air need be first through the evaporimeter cooling, then is heated up through condenser, has caused certain energy loss, and heat pump when wet air condensation is dehumidified evaporating temperature need reach below the air dew point temperature, so heat pump COP is lower.
When humid air directly contacts with solution, the heat transfer temperature difference between the two is little, and during dehumidifying, its dehumidification rate is high, and solution also has the advantages such as the dirt of catching, sterilization and can carry out purified treatment to air; And the regeneration of solution and endothermic process can utilize this renewable and clean energy resource of solar energy to realize.
Summary of the invention
The object of the invention is to and heat pump COP lower problem large for conventional heat pump drying system energy consumption, a kind of solar-assisted heat pump drying system is provided, this system utilizes solar energy solution is heated up and regenerate, and solution is used for dehumidifying and adding hot-air.
The objective of the invention is to realize by the following technical solutions: this solar-assisted heat pump drying system comprises hothouse, by air duct, is connected in the exhaust outlet of hothouse and the heat pump between air inlet; Described heat pump comprises evaporimeter, condenser, compressor and throttling arrangement, and the air inlet of described hothouse is equipped with blower fan; Be characterized in: it also comprises solar energy solution regenerator, interior heat/heat insulating dual purpose type packed tower and heat insulation-type packed tower; The taphole of described solar energy solution regenerator is connected with interior heat/heat insulating dual purpose type packed tower and heat insulation-type packed tower successively by solution line, and the taphole of heat insulation-type packed tower is connected with the solution inlet port of solar energy solution regenerator again; The exhaust outlet of described hothouse is also connected with heat insulation-type packed tower and Nei Re/heat insulating dual purpose type packed tower successively by air duct, and the exhaust outlet of interior heat/heat insulating dual purpose type packed tower is connected with the air inlet of hothouse again; The exhaust outlet of described heat insulation-type packed tower is also connected on the air inlet of heat pump condenser simultaneously, and the gas outlet of heat pump condenser is connected with the air inlet of hothouse; Be separately installed with magnetic valve on the solution inlet port of described solar energy solution regenerator and the solution line of taphole; On two branch's air ducts of described hothouse exhaust outlet and on two branch's air ducts of hothouse air inlet, on two branch's air ducts of the exhaust outlet of described heat insulation-type packed tower, on two branch's air ducts of the air inlet of described heat pump condenser, be separately installed with air-valve.
Specifically, described interior heat/heat insulating dual purpose type packed tower is on the basis of heat insulation-type packed tower, coil pipe is installed in tower, the refrigerant inlet of coil pipe is connected with heat pump compressor by refrigerant tubing with refrigerant outlet, on the refrigerant inlet of coil pipe and the refrigerant tubing of refrigerant outlet, is separately installed with magnetic valve; The top of interior heat/heat insulating dual purpose type packed tower is provided with exhaust outlet, and air-valve is installed on exhaust outlet, and the bottom air inlet mouth of interior heat/heat insulating dual purpose type packed tower also is provided with air duct and atmosphere UNICOM, on this air duct, air-valve is installed.
Solar-assisted heat pump drying system of the present invention, in the abundant period of solar energy, can adopt solution in hothouse, the humid air after dry materials is dehumidified and to the dehumidifying after air heat, then utilize solar energy to realize regeneration and the intensification to solution, therefore the coil pipe internal cause in interior heat now/heat insulating dual purpose type packed tower is the heat insulation-type packed tower without the hot fluid input; In transition season or the relatively high but solar energy of winter temperature not enough period again, adopt solution in hothouse, the humid air after dry materials being dehumidified and utilizing the condensation heat in heat pump condenser to be heated air after dehumidifying, and utilize solar energy to carry out preheating to solution then to enter in interior heat/heat insulating dual purpose type packed tower and regenerate, be interior pattern of fever packed tower therefore the coil pipe internal cause in interior heat now/heat insulating dual purpose type packed tower has been inputted the part high temperature refrigerant of compressor outlet; Temperature solar energy on the low side is without the value period in the winter time, and system is a traditional Analysis of Heat Pump Drying System.System of the present invention, on the basis of conventional heat pump drying system, adopts solution dehumidification to combine with dehumidification by condensation, and the regeneration of solution and heating process can be utilized solar energy, therefore, relative conventional heat pump drying system, annual energy consumption is less, and efficiency is high.
Operation principle of the present invention and the course of work are as follows:
System is in the situation that solar energy is abundant, and the system operation comprises hothouse, heat insulation-type packed tower, interior heat/heat insulating dual purpose type packed tower and solar energy solution regenerator.Hothouse is realized the dry run to material, and dried humid air is sent in the heat insulation-type packed tower.The heat insulation-type packed tower is realized the dehumidification process to humid air, spray and directly contact with the humid air entered from heat insulation-type packed tower bottom downwards from heat insulation-type packed tower top from the solution that interior heat/heat insulating dual purpose type packed tower is sent, solution and the exchange of humid air generation caloic, concentrated solution is sent in the solar energy solution regenerator after becoming weak solution, becomes dry air after the humid air dehumidifying and sends in interior heat/heat insulating dual purpose type packed tower.Interior heat/heat insulating dual purpose type packed tower is realized the heating process to dry air, interior heat/heat insulating dual purpose type packed tower coil pipe valve closing, and not to the packed tower transfer heat, therefore now this packed tower is a heat insulation-type packed tower; Directly send in interior heat/heat insulating dual purpose type packed tower and directly contact with the dry air of sending from the heat insulation-type filler from the solution of sending in the solar energy solution regenerator, the solution temperature of sending from solar regenerator is relatively high and drying-air temperature is relatively low, solution can be heated dry air in packed tower, dry air after heating is sent into hothouse material is carried out to drying, and solution continues to be fed into the heat insulation-type packed tower humid air is dehumidified.Solar regenerator utilizes solar energy to improve solution temperature and realizes the regenerative process to solution.From hothouse, humid air is out sent into the dehumidifying of heat insulation-type packed tower, and the dry air after dehumidifying is sent into interior heat/heat insulating dual purpose type packed tower heating, and after heating, dry air is sent into hothouse and continued dry; From solution out in the solar energy solution regenerator, send in interior heat/heat insulating dual purpose type packed tower the dry air heating, after heating, solution is sent into the heat insulation-type packed tower humid air is dehumidified, and after dehumidifying, solution is sent into the regeneration of solar energy solution regenerator, so forms circulation.
System is in the situation that higher period of transition season or winter temperature but solar energy are not enough again, and the system operation comprises hothouse, heat insulation-type packed tower, interior heat/heat insulating dual purpose type packed tower, solar energy solution regenerator and heat pump.Hothouse is realized the dry run to material, and dried humid air is sent in the heat insulation-type packed tower.The heat insulation-type packed tower is realized the dehumidification process to humid air, spray and directly contact with the humid air entered from heat insulation-type packed tower bottom downwards from heat insulation-type packed tower top from the solution that interior heat/heat insulating dual purpose type packed tower is sent, solution and the exchange of air generation caloic, concentrated solution is sent in the solar energy solution regenerator after becoming weak solution, becomes dry air after the humid air dehumidifying and sends in heat pump condenser.Interior heat/heat insulating dual purpose type packed tower is realized the regenerative process to solution, because this period solar energy can't provide required regeneration of waste liquor heat, so utilize heat pump compressor exit portion high temperature refrigerant to carry out compensational regeneration heat, realize the regenerative process to solution in interior heat/heat insulating dual purpose type packed tower.Interior heat/heat insulating dual purpose type packed tower coil pipe valve open, the part high temperature refrigerant at input compressor outlet place in coil pipe, therefore now this packed tower is an interior pattern of fever packed tower.From the solution of sending in the solar energy solution regenerator, send in interior heat/heat insulating dual purpose type packed tower, with the air generation caloic exchange of sending into packed tower, weak solution is sent in the heat insulation-type packed tower after becoming concentrated solution, after the cold-producing medium cooling in coil pipe, returns to compressor, and air directly enters in atmosphere.The heat that heat pump produces, a part is delivered to interior heat/heat insulating dual purpose type packed tower to realize the regenerative process to solution, and a part realizes the heating process to dry air in condenser.Now heat pump does not need humid air is carried out to dehumidification by condensation, so heat pump can adopt higher evaporating temperature, this makes the COP of heat pump significantly improve.Solar regenerator utilizes solar energy to realize the warm to solution, and in the heat insulation-type packed tower, weak solution out is first by sending into interior heat/heat insulating dual purpose type packed tower again the preheating of solar energy solution regenerator.From hothouse, humid air is out sent into the heat insulation-type packed tower air is dehumidified, and the dry air after dehumidifying is sent into the heat pump condenser heating, and after heating, dry air is sent into hothouse and continued dry; Solution in the solar energy solution regenerator preheating is sent in interior heat/heat insulating dual purpose type packed tower and is regenerated, and then solution is sent into the heat insulation-type packed tower humid air is dehumidified, and after dehumidifying, solution is sent into the preheating of solar energy solution regenerator, so forms circulation.
System is in the winter time in the situation of temperature solar energy on the low side without value, and system running pattern is a traditional Analysis of Heat Pump Drying System, adopts the method for dehumidification by condensation to be dehumidified to air, and the system operation comprises hothouse and heat pump.From hothouse, humid air out first carries out cool-down dehumidification through evaporator with heat pump, air after cool drying is sent in heat pump condenser again, the heat that low temperature drying absorption of air cold-producing medium discharges during condensation in condenser, become dry hot-air, send into hothouse by blower fan again, so form circulation.
The accompanying drawing explanation
Fig. 1 is the system principle structural representation of the embodiment of the present invention.
Fig. 2 is the theory structure schematic diagram in system summer condition when operation of the embodiment of the present invention.
Fig. 3 is the theory structure schematic diagram in system transition season operating mode when operation of the embodiment of the present invention.
Fig. 4 is the theory structure schematic diagram in system winter condition when operation of the embodiment of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Referring to Fig. 1, the present embodiment comprises hothouse 3, is connected in exhaust outlet and the heat pump between air inlet 2 of hothouse 3 by air duct; Heat pump 2 comprises evaporimeter 7, condenser 10, compressor 8 and throttling arrangement 9, and the air inlet of hothouse 3 is equipped with blower fan 11.As can be seen from Fig. 1, it also comprises solar energy solution regenerator 1, interior heat/heat insulating dual purpose type packed tower 5 and heat insulation-type packed tower 4.The taphole of solar energy solution regenerator 1 is connected with interior heat/heat insulating dual purpose type packed tower 5 and heat insulation-type packed tower 4 successively by solution line, and the taphole of heat insulation-type packed tower 4 is connected with the solution inlet port a of solar energy solution regenerator 1 again.The exhaust outlet of hothouse 3 is also connected with heat insulation-type packed tower 4 and Nei Re/heat insulating dual purpose type packed tower 5 successively by air duct, and the exhaust outlet of interior heat/heat insulating dual purpose type packed tower 5 is connected with the air inlet of hothouse 3 again.The exhaust outlet of heat insulation-type packed tower 4 is also connected on the air inlet of heat pump condenser 10 simultaneously, and the gas outlet of heat pump condenser 10 is connected with the air inlet of hothouse 3.Be separately installed with magnetic valve 13 and magnetic valve 12 on the solution inlet port of solar energy solution regenerator 1 and the solution line of taphole; From Fig. 1, be also shown in, be separately installed with air-valve 16, air-valve 17, air-valve 18, air-valve 19 on two branch's air ducts of hothouse 3 exhaust outlets and on two branch's air ducts of hothouse air inlet, be separately installed with air-valve 20, air-valve 21 on two branch's air ducts of the exhaust outlet of heat insulation-type packed tower 4, on two branch's air ducts of the air inlet of heat pump condenser 10, be separately installed with air-valve 22, air-valve 23.Solar energy solution regenerator 1 is prior art, is not described in detail in this, and wherein 6 is expressed as blower fan.
Referring to Fig. 1, the interior heat of the present embodiment/heat insulating dual purpose type packed tower 5 is on the basis of heat insulation-type packed tower 4, coil pipe is installed in tower, the refrigerant inlet of coil pipe is connected with heat pump compressor 8 by refrigerant tubing with refrigerant outlet, is separately installed with magnetic valve 14 and magnetic valve 15 on the refrigerant inlet of coil pipe and the refrigerant tubing of refrigerant outlet; The top of interior heat/heat insulating dual purpose type packed tower 5 is provided with exhaust outlet, and air-valve 25 is installed on exhaust outlet, and the bottom air inlet mouth of interior heat/heat insulating dual purpose type packed tower 5 also is provided with air duct and atmosphere UNICOM, and air-valve 24 is installed on this air duct.Heat insulation-type packed tower 4 is prior art, is not described in detail in this.
System is when abundant period of solar energy summer operation, and system magnetic valve 12,13 is opened, and magnetic valve 14,15, closes; Air- valve 17,18,21 is opened, and air- valve 16,19,20,22,23,24,25 cuts out, system operation capital equipment solar energy solution regenerator 1, hothouse 3, heat insulation-type packed tower 4 and Nei Re/heat insulating dual purpose type packed tower 5, and system is moved referring to Fig. 2.The humid air of sending from hothouse 3 is sent in heat insulation-type packed tower 4, in the interior humid air of heat insulation-type packed tower 4 and the exchange of solution generation caloic, humid air heat insulation-type packed tower 4 is interior send into interior heat/heat insulating dual purpose type packed tower 5 after dehumidified in further dehumidifying heat temperature raising, the heated drying air of acquisition is sent into hothouse 3 inner drying materials.Solution enters interior heat/5 pairs of dry air of heat insulating dual purpose type packed tower and is dehumidified and heat from solar energy solution regenerator 1 is sent, send into again 4 pairs of humid air dehumidifying of heat insulation-type packed tower, after dehumidifying, solution is sent in solar energy solution regenerator 1, then utilize air that solar energy and blower fan 6 send into to regeneration of waste liquor and promote solution temperature, continue to be fed in interior heat/heat insulating dual purpose type packed tower 5, so form circulation.
When system was moved in the not enough period of solar energy, magnetic valve 12,13,14,15 is opened; Air- valve 17,19,20,22,24,25 is opened, air- valve 16,18,21,23 cuts out, system operation capital equipment solar energy solution regenerator 1, heat pump 2, hothouse 3, heat insulation-type packed tower 4 and Nei Re/heat insulating dual purpose type packed tower 5, system is moved referring to Fig. 3.The humid air of sending from hothouse 3 enters in heat insulation-type packed tower 4, in heat insulation-type packed tower 4, with solution generation caloic, exchange, humid air is dehumidified, and the dry air after dehumidifying is sent into heat pump condenser 10 and heated, and the hot dry air after heating is sent into the interior continuation dried material of hothouse 3; Solution is sent in interior heat/heat insulating dual purpose type packed tower 5 after the interior preheating of solar energy solution regenerator 1, then utilize the required regenerated heat of part heat compensation in heat pump compressor 8 exits, solution after regeneration sends into that heat insulation-type packed tower 4 is interior to be dehumidified to humid air, and after dehumidifying, solution is sent into solar energy solution regenerator 1; The high temperature refrigerant in heat pump compressor 8 exits is sent in interior heat/heat insulating dual purpose type packed tower 5, and cold-producing medium after the solution heating is returned to heat pump compressor 8, so forms circulation.
When system is moved without the value period at solar energy, the magnetic valve Close All, air- valve 16,19,23 is opened, and air- valve 17,18,20,21,22,24,25 cuts out.The capital equipment of now system operation is heat pump 2 and hothouse 3, and system is moved referring to Fig. 4, and now the dehumidification mode of system is traditional dehumidification by condensation mode.The humid air of sending from hothouse 3 carries out cool-down dehumidification through evaporator with heat pump 7, air after cool drying is sent in heat pump condenser 9 again, and in low temperature drying absorption of air condenser, the heat of cold-producing medium, become dry hot-air, send into hothouse by blower fan 11 again, so form circulation.
Claims (2)
1. a solar-assisted heat pump drying system, comprise hothouse, by air duct, be connected in the exhaust outlet of hothouse and the heat pump between air inlet; Described heat pump comprises evaporimeter, condenser, compressor and throttling arrangement, and the air inlet of described hothouse is equipped with blower fan; It is characterized in that: it also comprises solar energy solution regenerator, interior heat/heat insulating dual purpose type packed tower and heat insulation-type packed tower; The taphole of described solar energy solution regenerator is connected with interior heat/heat insulating dual purpose type packed tower and heat insulation-type packed tower successively by solution line, and the taphole of heat insulation-type packed tower is connected with the solution inlet port of solar energy solution regenerator again; The exhaust outlet of described hothouse is also connected with heat insulation-type packed tower and Nei Re/heat insulating dual purpose type packed tower successively by air duct, and the exhaust outlet of interior heat/heat insulating dual purpose type packed tower is connected with the air inlet of hothouse again; The exhaust outlet of described heat insulation-type packed tower is also connected on the air inlet of heat pump condenser simultaneously, and the gas outlet of heat pump condenser is connected with the air inlet of hothouse; Be separately installed with magnetic valve on the solution inlet port of described solar energy solution regenerator and the solution line of taphole; On two branch's air ducts of described hothouse exhaust outlet and on two branch's air ducts of hothouse air inlet, on two branch's air ducts of the exhaust outlet of described heat insulation-type packed tower, on two branch's air ducts of the air inlet of described heat pump condenser, be separately installed with air-valve.
2. solar-assisted heat pump drying system according to claim 1, it is characterized in that: described interior heat/heat insulating dual purpose type packed tower is on the basis of heat insulation-type packed tower, coil pipe is installed in tower, the refrigerant inlet of coil pipe is connected with heat pump compressor by refrigerant tubing with refrigerant outlet, on the refrigerant inlet of coil pipe and the refrigerant tubing of refrigerant outlet, is separately installed with magnetic valve; The top of interior heat/heat insulating dual purpose type packed tower is provided with exhaust outlet, and air-valve is installed on exhaust outlet, and the bottom air inlet mouth of interior heat/heat insulating dual purpose type packed tower also is provided with air duct and atmosphere UNICOM, on this air duct, air-valve is installed.
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| CN201310453060.4A CN103471374B (en) | 2013-09-29 | 2013-09-29 | Solar-assisted heat pump drying system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104567282A (en) * | 2014-12-31 | 2015-04-29 | 伯恩太阳能科技有限公司 | Intelligent multifunctional drying room |
| CN107575970A (en) * | 2017-08-30 | 2018-01-12 | 北京建筑大学 | A kind of combined-type water cold air conditioning system and operation method |
| CN107677010A (en) * | 2017-08-30 | 2018-02-09 | 北京建筑大学 | A kind of air-conditioning system and control method of no dew point control |
| CN109618686A (en) * | 2019-01-31 | 2019-04-16 | 中原工学院 | Solar heat pump solution dehumidification composite drying and low-temperature aeration grain storage system |
| CN110173967A (en) * | 2019-06-26 | 2019-08-27 | 北京中矿环保科技股份有限公司 | The drying method of the anhydration system of aqueous coal product and aqueous coal product |
| CN113154867A (en) * | 2021-05-08 | 2021-07-23 | 江苏方天电力技术有限公司 | Humiture divides accuse gas heat pump drying system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104567282A (en) * | 2014-12-31 | 2015-04-29 | 伯恩太阳能科技有限公司 | Intelligent multifunctional drying room |
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| CN113154867A (en) * | 2021-05-08 | 2021-07-23 | 江苏方天电力技术有限公司 | Humiture divides accuse gas heat pump drying system |
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| CN103471374B (en) | 2015-10-21 |
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