CN103983095A - Heat recovery heat pump and energy-storage solar heat pump united drying system and control method - Google Patents
Heat recovery heat pump and energy-storage solar heat pump united drying system and control method Download PDFInfo
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- CN103983095A CN103983095A CN201410223720.4A CN201410223720A CN103983095A CN 103983095 A CN103983095 A CN 103983095A CN 201410223720 A CN201410223720 A CN 201410223720A CN 103983095 A CN103983095 A CN 103983095A
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- 238000001035 drying Methods 0.000 title claims abstract description 107
- 238000004146 energy storage Methods 0.000 title claims abstract description 91
- 238000011084 recovery Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims description 86
- 239000000523 sample Substances 0.000 claims description 50
- 239000007788 liquid Substances 0.000 claims description 48
- 230000001112 coagulating effect Effects 0.000 claims description 37
- 239000012530 fluid Substances 0.000 claims description 24
- 238000001914 filtration Methods 0.000 claims description 18
- 239000011232 storage material Substances 0.000 claims description 16
- 238000009825 accumulation Methods 0.000 claims description 13
- 238000004458 analytical method Methods 0.000 claims description 13
- 239000012071 phase Substances 0.000 claims description 13
- 238000009833 condensation Methods 0.000 claims description 12
- 230000005494 condensation Effects 0.000 claims description 12
- 238000001704 evaporation Methods 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 8
- 230000009466 transformation Effects 0.000 claims description 5
- 239000007791 liquid phase Substances 0.000 claims description 4
- 238000010981 drying operation Methods 0.000 abstract description 2
- 239000003507 refrigerant Substances 0.000 description 11
- 239000002912 waste gas Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000007791 dehumidification Methods 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 238000007605 air drying Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000012782 phase change material Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses a heat recovery heat pump and energy-storage solar heat pump united drying system and a control method. A drying unit is respectively connected with a belt energy-storage solar heat pump ad a condensing type heat recovery heat pump, and a control unit is respectively connected with an energy-storage solar heat pump unit, a condensing type heat recovery heat pump unit and the drying unit. The control method adopts a solar heat pump drying operation mode, a solar heat pump drying and phase change energy-storage operation mode and a phase change energy-taking heat pump operation mode. By adopting the modes, the heat recovery heat pump and energy-storage solar heat pump united drying system and the control method can achieve a solar heat pump drying system capable of performing all-weather, uninterrupted, stable and efficient operation, achieve solar energy utilization rate maximization and meet the process requirements for drying most of materials.
Description
Technical field
The present invention relates to the dry field of solar heat pump, particularly relate to the heat pump united drying system of a kind of heat-recovery heat pump and energy-storage solar and control method.
Background technology
In China, the drying operation energy used accounts for national economy total energy consumption up to 12% left and right.Dry is a complicated heat and mass transfer process, and it is not only subject to the impact of material characteristic and drying medium parameter, also has important relationship with drying mode.General agricultural byproducts and food dry, requires temperature levels lower, greatly between 40-70 DEG C, this just in time with solar energy heat utilization field in low temperature utilization adapt, can save in a large number conventional energy resource, remarkable in economical benefits.
At present, the mode of utilizing solar energy and heat pump to carry out dry materials mainly contains following several: 1. circulated air heat-recovery heat pump is dry: utility model patent " cycling hot recovery Analysis of Heat Pump Drying System " (Granted publication CN 202709687) will be dried low temperature and high relative humidity air and after air distribution, enter evaporator with heat pump cool-down dehumidification by a certain percentage with new wind, reclaim dry waste gas part sensible heat and steam gasification latent heat.But circulation is high by dry waste gas humidity, cool-down dehumidification DeGrain, new wind excess moisture, the poor and whole heat pump efficiency of air drying capacity is lower.2. indirect type solar energy heat pump system: article " experimental study of solar energy one heat pump united desiccated wood " (Zhang Biguang. the experimental study .[J of solar energy and heat pump united desiccated wood]) solar energy journal 2007,28 (8): 870-873).Adopt solar energy and heat pump united drying system: solar energy air drying system and Analysis of Heat Pump Drying System are joined together, and in dry run, the heat supply of hothouse and dehumidifying are by solar-heating and heat pump dehumidifying shared.The two both can isolated operation also can combine use, this system extension solar energy drying system applicable meteorological condition while using separately, take full advantage of the advantage of heat pump drying and solar energy drying, formed mutual supplement with each other's advantages.But this type of heat pump adopts same compressor, in the time of low temperature drying, still can stable operation, but its control and optimize very complicated.In the time of middle high temperature drying, compressor is inhaled, exhaust excessive temperature differentials, and compression ratio is excessive, and compressor stability declines greatly, and simultaneity factor COP also declines to a great extent, and the comprehensive energy efficiency of heat pump may be lower than electric heater unit.3. direct expanding solar heating pump is dry: utility model " drying device of direct expanding solar heating pump and solar energy combination " (Granted publication number: CN 202267339 U, application number: 201120346773.7) adopt the combined method of direct expanding solar heating pump and solar air heat collection to heat drying medium (air), can be dried daytime to material, but at night or overcast and rainy, this drying system cannot be dried material.
Due to shortcomings such as solar energy density is little, poor continuity, cause the use of solar energy drying in industrial production to be restricted.Conventional non-direct expanding solar heating pump drying system complex structure, energy utilization rate are low, poor continuity, and most of material needs to continue for continuous many days the dry technological requirement that just can reach.Therefore, conventional solar energy drying is generally difficult to meet dry materials technological requirement.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of heat-recovery heat pump and the heat pump united drying system of energy-storage solar and control method, can realize round-the-clock uninterrupted, stable, the efficient solar heat pump drying system moving, realize solar energy utilization ratio and maximize, meet the technological requirement of most of dry materials.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of heat-recovery heat pump and energy-storage solar heat pump united drying system, comprise: energy-storage solar heat pump unit, coagulating type heat-recovery heat pump unit, drying unit and control module, described drying unit is connected with coagulating type heat-recovery heat pump with energy-storage solar heat pump respectively, and described control module is connected with drying unit with energy-storage solar heat pump unit, coagulating type heat-recovery heat pump unit respectively.
In a preferred embodiment of the present invention, described energy-storage solar heat pump unit comprises at least 1 energy-storage solar heat pump, described energy-storage solar heat pump comprises energy-storage box and solar energy heating evaporimeter, in the outlet of described solar energy heating evaporimeter, be connected with the first magnetic valve, the other end of described the first magnetic valve is connected with the entrance of the first gas-liquid separator, the outlet of described the first gas-liquid separator is connected with the air entry of the first compressor, described the first compressor is connected with the first fin-tube type condenser by the second three-way solenoid valve, on the entrance of described condenser, be connected with the second magnetic valve, the other end of described the second magnetic valve is connected with the first heating power expansion valve, the other end of described the first heating power expansion valve is connected with the outlet of the first device for drying and filtering, the entrance of described the first device for drying and filtering is connected with the outlet of the first fluid reservoir, the entrance of described the first fluid reservoir is connected with the first fin-tube type condenser by the first three-way solenoid valve, described covert energy-storage box one end is connected with the 3rd three-way solenoid valve, the other end is connected with the 4th three-way solenoid valve, described the 3rd three-way solenoid valve also respectively with the first three-way solenoid valve, the first magnetic valve is connected with the first gas-liquid separator, described the 4th three-way solenoid valve also respectively with the second three-way solenoid valve, the second magnetic valve is connected with the first heating power expansion valve, the temperature-sensitive bag of described the first heating power expansion valve is located at the porch of the first gas-liquid separator.
In a preferred embodiment of the present invention, the first interface of described the first three-way solenoid valve is connected with the first fluid reservoir, the second interface is connected with the first fin-tube type condenser, the 3rd interface is connected with the first interface of the 3rd three-way solenoid valve, the second interface of described the 3rd three-way solenoid valve is connected with energy-storage box, the 3rd interface respectively with the first magnetic valve, the first gas-liquid separator is connected, the first interface of described the second three-way solenoid valve is connected with the first compressor, the second interface is connected with the first fin-tube type condenser, the 3rd interface is connected with the first interface of the 4th three-way solenoid valve, the second interface of described the 4th three-way solenoid valve is connected with energy-storage box, the 3rd interface is connected with the first heating power expansion valve with the second magnetic valve respectively.
In a preferred embodiment of the present invention, described energy-storage box comprises the first fin-tube type evaporative condenser, energy storage material and lagging casing, and described the first fin-tube type evaporative condenser is arranged at lagging casing inside, and described energy storage material is filled in lagging casing inside.
In a preferred embodiment of the present invention, described energy storage material is solid-liquid phase change energy storage material.
In a preferred embodiment of the present invention, described solar energy heating evaporimeter comprises multiple evaporating heat exchangers and multiple heat absorbing fins, multiple evaporating heat exchangers set gradually between multiple heat absorbing fins, described multiple heat absorbing fins connects into entirety, described multiple radiating fins top is provided with transparent cover plate, side is provided with insulation frame, and bottom is provided with insulation backboard.
In a preferred embodiment of the present invention, described coagulating type energy recovery pump unit comprises at least one coagulating type energy recovery pump, described coagulating type energy recovery pump comprises the second fin-tube type condenser and the second Fin and tube evaporator, one end of described the second fin-tube type condenser is connected with the exhaust outlet of the second compressor, the other end is connected with the entrance of the second fluid reservoir, the outlet of described the second fluid reservoir is connected with the entrance of the second device for drying and filtering, the outlet of described the second device for drying and filtering is connected with the second heating power expansion valve, the other end of the second heating power expansion valve is connected with the entrance of the second Fin and tube evaporator, the outlet of the second Fin and tube evaporator is connected with the entrance of the second gas-liquid separator, the outlet of described the second gas-liquid separator is connected with the air entry of the second compressor, the temperature-sensitive bag of described the second heating power expansion valve is located at the porch of the second gas-liquid separator.
In a preferred embodiment of the present invention, described drying unit comprises drying shed, air heat case and air exhaust box, the air outlet of described drying shed is connected with air heat case, exhaust outlet is connected with air exhaust box, in described air heat case, be provided with the first fin-tube type condenser, the second fin-tube type condenser and the first adjustable speed fan, described the first fin-tube type condenser, the second fin-tube type condenser and the first adjustable speed fan array from left to right, in described air exhaust box, be provided with the second Fin and tube evaporator and the second adjustable speed fan, described the second Fin and tube evaporator is arranged on water-supporting disc, on described water-supporting disc, be provided with drainpipe, described the second adjustable speed fan is arranged on the second Fin and tube evaporator one side.
Comprise controller at the control module described in a preferred embodiment of the present invention, the first temperature signal probe, the second temperature signal probe and the 3rd temperature signal probe, described controller is popped one's head in the first temperature signal respectively, the second temperature signal probe, the 3rd temperature signal probe, the first magnetic valve, the second magnetic valve, the first three-way solenoid valve, the second three-way solenoid valve, the 3rd three-way solenoid valve, the 4th three-way solenoid valve, the first compressor, the second compressor, the first adjustable speed fan is connected with the second adjustable speed fan, the first described temperature signal probe is arranged at heat absorbing fins surface, the second described temperature signal probe is arranged between the first fin-tube type condenser and the second fin-tube type condenser, the 3rd described temperature signal probe is arranged between the first fin-tube type condenser and the air outlet of air heat case.
In a preferred embodiment of the present invention, described energy-storage solar heat pump unit comprises the band energy-storage solar heat pump of multistage setting, and described coagulating type energy recovery pump unit comprises the coagulating type energy recovery pump of multistage setting.
For solving the problems of the technologies described above, another technical solution used in the present invention is: the control method of a kind of heat-recovery heat pump and the heat pump united drying system of energy-storage solar is provided, comprises following operational mode:
A. solar heat pump drying mode: when the design temperature T of solar energy heating evaporimeter meets the T that imposes a condition
d< T < T
g, the first temperature signal probe sends temperature to controller, controller carries out sending control instruction after logic analysis to temperature signal and cuts out the 3rd solenoid electric valve and the 4th solenoid electric valve, and open the first magnetic valve, the second magnetic valve, the first three-way solenoid valve and the second three-way solenoid valve, coagulating type heat-recovery heat pump carries out main air heating, solar energy heating evaporimeter is as low-temperature heat source, solar heat pump carries out secondary air heating, the second temperature signal probe of air heat case inside and the 3rd temperature signal probe detected temperatures, and control to adjust temperature and air quantity by second controller, the air of heating is sent into air heat case, b. solar heat pump is dried and phase-change accumulation energy pattern: as the design temperature T of solar energy heating evaporimeter > T
gtime, the first temperature signal probe sends temperature to controller, controller carries out sending control instruction after logic analysis to temperature signal and opens the first three-way magnetic valve to the four three-way magnetic valves and the first magnetic valve and the second magnetic valve, coagulating type heat-recovery heat pump carries out main air heating, solar energy heating evaporimeter is as low-temperature energy sources, the condensation heat part that solar heat pump produces enters energy-storage box for phase-change accumulation energy, another part enters air heat case, carry out secondary air heating, the second temperature signal probe of air heat case inside and the 3rd temperature signal probe detected temperatures, and control to adjust temperature and air quantity by controller, the air of heating is sent into air heat case, c. energy heat pump drying pattern is got in phase transformation: as the design temperature T of solar energy heating evaporimeter < T
dtime, the first temperature signal probe sends temperature to controller, controller carries out sending control instruction after logic analysis to temperature signal and cuts out the first magnetic valve, the second magnetic valve, open the first three-way solenoid valve to the four three-way solenoid valves, coagulating type heat-recovery heat pump carries out main air heating, the heat energy that energy-storage box stores is as low-temperature heat source, the condensation heat that the generation of energy heat pump is got in phase transformation enters air heat case, carry out secondary air heating, the second temperature signal probe of air heat case inside and the 3rd temperature signal probe detected temperatures, and control to adjust temperature and air quantity by controller, the air of heating is sent into air heat case.
In a preferred embodiment of the present invention, described T
dand T
gfor the value that requires to set according to different material drying process.
The invention has the beneficial effects as follows: the heat pump united drying system of heat-recovery heat pump of the present invention and energy-storage solar and control method, can realize round-the-clock uninterrupted, stable, the efficient solar heat pump drying system moving, when fine day solar irradiation intensity is larger, the waste heat that phase-change energy storage device produces system stores, the low-temperature heat source of heat pump drying during as night or solar irradiation deficiency, realize solar energy utilization ratio and maximize, meet the technological requirement of most of dry materials.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing, wherein:
Fig. 1 is the structural representation of heat pump united drying system one preferred embodiment of heat-recovery heat pump of the present invention and energy-storage solar;
Fig. 2 be shown in the structural representation of solar energy heating evaporation structure of heat-recovery heat pump and the heat pump united drying system of energy-storage solar;
Fig. 3 be shown in the structural representation of phase-change accumulation energy case of heat-recovery heat pump and the heat pump united drying system of energy-storage solar;
In accompanying drawing, the mark of each parts is as follows: 10, energy-storage box, 11, solar energy heating evaporimeter, 121, the first magnetic valve, 122, the second magnetic valve, 131, the first three-way solenoid valve, 132, the second three-way solenoid valve, 133, the 3rd three-way solenoid valve, 134, the 4th three-way solenoid valve, 14, the first gas-liquid separator, 15, the first compressor, 16, the first heating power expansion valve, 17, the first device for drying and filtering, 18, the first fluid reservoir, 19, the first fin-tube type condenser, 20, the second fin-tube type condenser, 21, the second Fin and tube evaporator, 22, the second gas-liquid separator, 23, the second compressor, 24, the second heating power expansion valve, 25, the second device for drying and filtering, 26, the second fluid reservoir, 27, drying shed, 28, the first adjustable speed fan, 29, air heat case, 30, air exhaust box, 31, the second adjustable speed fan, 32, water-supporting disc, 33, drainpipe, 34, controller, 341, the first temperature signal probe, 342, the second temperature signal probe, 343, the 3rd temperature signal probe, 101, the first fin-tube type evaporative condenser, 102, energy storage material, 103, lagging casing, 111, evaporating heat exchanger, 112, heat absorbing fins, 113, transparent cover plate, 114, insulation frame, 115, insulation backboard.
Detailed description of the invention
To the technical scheme in the embodiment of the present invention be clearly and completely described below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1 and Fig. 2, a kind of heat-recovery heat pump and the heat pump united drying system of energy-storage solar, comprise: energy-storage solar heat pump unit, coagulating type heat-recovery heat pump unit, drying unit and control module, drying unit is connected with coagulating type heat-recovery heat pump with band energy-storage solar heat pump respectively, control module comprises the first control module and the second control module, the first control module is connected with band energy-storage solar heat pump, the second control module respectively with band energy-storage solar heat pump, coagulating type heat-recovery heat pump is connected with drying unit, the second fin-tube type condenser 20 of coagulating type heat-recovery heat pump is as main air heater, the first fin-tube type condenser 19 of energy-storage solar heat pump is as secondary air heater, by the first adjustable speed fan 28, the air of heating is sent into drying shed 27.The second Fin and tube evaporator 21 and second adjustable speed fan 31 of coagulating type heat-recovery heat pump are arranged in air exhaust box 30, under the effect of the second adjustable speed fan 31, the humid air in drying box 27 are discharged after evaporimeter cool-down dehumidification reclaims sensible heat and latent heat.
In addition, energy-storage solar heat pump unit comprises at least 1 energy-storage solar heat pump, energy-storage solar heat pump comprises energy-storage box 10 and solar energy heating evaporimeter 11, in the outlet of solar energy heating evaporimeter 11, be connected with the first magnetic valve 121, the other end of the first magnetic valve 121 is connected with the entrance of the first gas-liquid separator 14, the outlet of the first gas-liquid separator 14 is connected with the air entry of the first compressor 15, the first compressor 15 is connected with the first interface of the second three-way solenoid valve 132, the second interface of the second three-way solenoid valve 132 is connected with the first fin-tube type condenser 19, the 3rd interface of the second three-way solenoid valve 132 is connected with 134 first interfaces of the 4th three-way solenoid valve, on the entrance of solar energy heating evaporimeter 11, be connected with the second magnetic valve 122, the other end of the second magnetic valve 122 is connected with the first heating power expansion valve 16, the temperature-sensitive bag of the first heating power expansion valve 16 is located at the porch of the first gas-liquid separator 14, the other end of the first heating power expansion valve 16 is connected with the outlet of the first device for drying and filtering 17, the entrance of the first device for drying and filtering 17 is connected with the outlet of the first fluid reservoir 18, the entrance of the first fluid reservoir 18 is connected with the first interface of the first three-way solenoid valve 131, the second interface of the first three-way solenoid valve 131 is connected with the first fin-tube type condenser 19, the 3rd interface is connected with the first interface of the 3rd three-way solenoid valve 133, energy-storage box 10 one end are connected with the second interface of the 3rd three-way solenoid valve 133, the other end is connected with the second interface of the 4th three-way solenoid valve 134, the 3rd interface of the 4th three-way solenoid valve 134 is connected with one end of the second magnetic valve 122 and the first heating power expansion valve 16 respectively, the 3rd interface of the 3rd three-way solenoid valve 133 respectively with the first magnetic valve 121, the entrance of the first gas-liquid separator 14 connects.
In addition, energy-storage box 10 comprises the first fin-tube type evaporative condenser 101, energy storage material 102 and lagging casing 103, the first fin-tube type evaporative condenser 10 is arranged at lagging casing 103 inside, and energy storage material 102 is filled in lagging casing 103 inside, and energy storage material 102 is solid-liquid phase change energy storage material.
In addition, solar energy heating evaporimeter comprises multiple evaporating heat exchangers 111 and multiple heat absorbing fins 112, multiple evaporating heat exchangers 111 set gradually between multiple heat absorbing fins 112, described multiple heat absorbing fins 112 connects into entirety, described multiple radiating fin 112 tops are provided with transparent cover plate 113, side is provided with insulation frame 114, and bottom is provided with insulation backboard 115.
In addition, coagulating type energy recovery heat pump unit comprises at least one coagulating type energy recovery heat pump, coagulating type energy recovery heat pump comprises the second fin-tube type condenser 20 and the second Fin and tube evaporator 21, one end of the second fin-tube type condenser 20 is connected with the exhaust outlet of the second compressor 23, the other end is connected with the entrance of the second fluid reservoir 26, the outlet of the second fluid reservoir 26 is connected with the entrance of the second device for drying and filtering 25, the outlet of the second device for drying and filtering 25 is connected with the second heating power expansion valve 24, the other end of the second heating power expansion valve 24 is connected with the entrance of the second Fin and tube evaporator 21, the outlet of the second Fin and tube evaporator 21 is connected with the entrance of the second gas-liquid separator 22, the outlet of the second gas-liquid separator 22 is connected with the air entry of the second compressor 23, the temperature-sensitive bag of described the second heating power expansion valve 24 is located at the porch of the second gas-liquid separator 22.
In addition, drying unit comprises drying shed 27, air heat case 29 and air exhaust box 30, the air outlet of drying shed is connected with air heat case 29, exhaust outlet is connected with air exhaust box 30, in air heat case 29, be provided with the first fin-tube type condenser 19, the second fin-tube type condenser 20 and the first adjustable speed fan 28, the first fin-tube type condenser 19, the second fin-tube type condenser 20 and the first adjustable speed fan 28 array from left to right, in air exhaust box 30, be provided with the second Fin and tube evaporator 21 and the second adjustable speed fan 31, the second Fin and tube evaporator 21 is arranged on water-supporting disc 32, on water-supporting disc 32, be provided with drainpipe 3, the second adjustable speed fan 31 is arranged on the second Fin and tube evaporator 21 1 sides.
In addition, control module comprises controller 34, the first temperature signal probe 341, the second temperature signal probe 342 and the 3rd temperature signal probe 343, controller 34 pops one's head in 341 with the first temperature signal respectively, the second temperature signal probe 342, the 3rd temperature signal probe 343, the first magnetic valve 121, the second magnetic valve 122, the first three-way solenoid valve 131, the second three-way solenoid valve 132, the 3rd three-way solenoid valve 133, the 4th three-way solenoid valve 134, the first compressor 15, the second compressor 23, the first adjustable speed fan 28 is connected with the second adjustable speed fan 31, the first temperature signal probe 341 is arranged at heat absorbing fins 112 surfaces, the second temperature signal probe 342 is arranged between the first fin-tube type condenser 19 and the second fin-tube type condenser 20, the 3rd temp probe 343 is arranged between the first fin-tube type condenser 19 and the air outlet of air heat case 29.
In another embodiment, energy-storage solar heat pump unit can be arranged to according to local climate situation the band energy-storage solar heat pump of multistage setting, to meet the demand of different baking temperatures.Coagulating type energy recovery pump unit comprises the coagulating type energy recovery pump of multistage setting, and the multistage recovery of realization to dry air exhaust waste heat and the Multi-stage heating of drying medium (new wind) also can be by solar cold condenser together with the designs of coagulating type heat pump condenser.Evaporating heat-exchanging pipe in solar energy heating evaporimeter can not adopt the form of series connection, adopts in parallel or series-parallel form.Energy storage does not adopt phase-change material, and adopts sensible heat energy storage material etc.
A control method for heat-recovery heat pump and the heat pump united drying system of energy-storage solar, comprises following operational mode:
A. the dry operational mode of solar heat pump: when solar energy heating evaporator plate core temperature T
d<T<T
gtime, T
d, T
git is respectively the value of setting according to the requirement of different material drying process in controller, the first temperature signal probe 341 is transferred to controller 34 by holding wire temperature signal, controller 34 carries out sending control instruction by wire after logic analysis to temperature signal: close the 3rd three-way solenoid valve 133, the 4th three-way solenoid valve 134, open the first three-way solenoid valve 131, the second three-way solenoid valve 132 and the first magnetic valve 121, the second magnetic valve 122, now, solar energy is as low-temperature heat source, and the condensation heat that heat pump cycle produces is all for dry.Working medium becomes gaseous state absorb solar heat in solar energy heating evaporimeter 11 after, gaseous working medium enters the first compressor 15 and becomes the overheated gaseous working medium of HTHP through the first magnetic valve 121 and the first gas-liquid separator 14, the overheated gaseous working medium of HTHP through the second three-way solenoid valve 132 first interfaces to the second interface, thereby enter the first fin-tube type condenser 19 and be condensed into liquid refrigerant, emit condensation heat, condensed liquid refrigerant through the second interface of the first three-way solenoid valve 131 to first interface, passing through successively the first fluid reservoir 18, the first device for drying and filtering 17 enters the first heating power expansion valve 16, throttling becomes the gas-liquid two-phase working medium of low-temp low-pressure, the gas-liquid two-phase working medium of low-temp low-pressure enters solar energy heating evaporimeter 11 through the second magnetic valve 122 and absorbs solar heat and become gaseous working medium, complete a heat pump fluid circulation, working medium is periodic duty and so forth.
Coagulating type heat-recovery heat pump operational mode: working medium becomes gaseous state after absorption dehydration waste gas residual heat in the second Fin and tube evaporator 21, gaseous working medium enters the second compressor 23 and becomes the overheated gaseous working medium of HTHP through the second gas-liquid separator 22, the overheated gaseous working medium of HTHP enters the second fin-tube type condenser 20 and is condensed into liquid refrigerant, emit condensation heat, condensed liquid refrigerant is through the second fluid reservoir 26, the second device for drying and filtering 25 enters the second heating power expansion valve 24, throttling becomes the gas-liquid two-phase working medium of low-temp low-pressure, the gas-liquid two-phase working medium of low-temp low-pressure enters the second Fin and tube evaporator 21 absorption dehydration waste gas residual heats and becomes gaseous working medium, complete a heat pump fluid circulation, working medium is periodic duty and so forth.
Meanwhile, the second temperature signal probe 342 that control module is arranged on air heat case 29 inside is transferred to controller 34 by holding wire the temperature signal of the drying medium heating through the second fin-tube type condenser 20 one-levels (new wind), controller 34 carries out after logic analysis, by the operating condition of wire control the second compressor 23, ensureing that drying medium (new wind) can reach default reasonable temperature after the second fin-tube type condenser 20 heats to temperature signal; The 3rd temperature signal probe 343 that is arranged on air heat case 29 inside is transferred to controller 34 by holding wire the temperature signal of the drying medium heating through the first fin-tube type condenser secondary (new wind), controller 34 carries out after logic analysis, by the operating condition of wire control the first compressor 15 and the rotating speed of the first adjustable speed fan 28 and the second blower fan 31, ensureing that drying medium (new wind) can reach preset temperature and default air quantity after two-stage heats to this temperature signal.
B. solar heat pump is dried and phase-change accumulation energy operational mode: as solar energy heating evaporator plate core temperature T >T
gtime, the first temperature signal probe 341 is transferred to controller 34 by holding wire temperature signal, controller 34 carries out sending control instruction by wire after logic analysis to temperature signal: open the first three-way solenoid valve 131, the second three-way solenoid valve 132, the second three-way solenoid valve 133, the second three-way solenoid valve 134 and the first magnetic valve 121, the second magnetic valve 122, now, solar energy is as low-temperature heat source, the condensation heat part that heat pump produces is for dry, and another part is for phase-change accumulation energy.Specific works process: working medium becomes gaseous state absorb solar heat in solar energy heating evaporimeter 11 after, gaseous working medium enters the first compressor 15 and becomes the overheated gaseous working medium of HTHP through the first magnetic valve 121 and the first gas-liquid separator 14, the overheated gaseous working medium of HTHP enters the first interface of the second three-way solenoid valve 132, then the overheated gaseous working medium of HTHP divides two-way to flow out from the second interface and the 3rd interface end of the second three-way solenoid valve 132 respectively, enter the first fin-tube type condenser 19 from the overheated gaseous working medium of the second interface of the second three-way solenoid valve 132 HTHP out and be condensed into liquid refrigerant, emit condensation heat, condensed liquid refrigerant enters the first three-way solenoid valve from the first three-way solenoid valve 131 second interfaces, enter phase-change accumulation energy case 10 from the overheated gaseous working medium of the 3rd interface HTHP out of the second three-way solenoid valve 132 through the 4th three-way solenoid valve 134 and be condensed into liquid refrigerant, emit condensation heat, condensed liquid refrigerant enters the first three-way solenoid valve 131 through the 3rd three-way solenoid valve 133 from the 3rd interface of the 3rd three-way solenoid valve 131, then liquid refrigerant flows out from the first interface end of the first three-way solenoid valve 131, through the first fluid reservoir 18, the first device for drying and filtering 17 enters the first heating power expansion valve 16, throttling becomes the gas-liquid two-phase working medium of low-temp low-pressure, the gas-liquid two-phase working medium of low-temp low-pressure enters solar energy heating evaporimeter 11 through the second magnetic valve 122 and absorbs solar heat and become gaseous working medium, complete a heat pump fluid circulation, working medium is periodic duty and so forth.
C. energy heat pump drying operational mode is got in phase transformation: as solar energy heating evaporator plate core temperature T <T
dtime, the first temperature signal probe 341 is transferred to controller 34 by holding wire temperature signal, controller 34 carries out sending control instruction by wire after logic analysis to temperature signal: close the first magnetic valve 121, the second magnetic valve 122, open the first three-way solenoid valve 131, the second three-way solenoid valve 132, the 3rd three-way solenoid valve 133 and the 4th three-way solenoid valve 134, now, the heat that phase-change accumulation energy case 10 stores is as low-temperature heat source, and the condensation heat that heat pump produces is all for dry.Specific works process: working medium in phase-change accumulation energy case 10, absorb phase-changing energy storage material store heat after become gaseous working medium, gaseous working medium is through the second interface to the three interfaces of three-way solenoid valve 133, enter the second compressor 15 and become again the overheated gaseous working medium of HTHP by the first gas-liquid separator 14, the overheated gaseous working medium of HTHP through the first interface of the second three-way solenoid valve 132 to the second interface, then enter the first fin-tube type condenser 19 and be condensed into liquid refrigerant, emit condensation heat, condensed liquid refrigerant is through the second interface road first interface of three-way solenoid valve 131, entering the first heating power expansion valve 16 by the first fluid reservoir 18 and the first device for drying and filtering 17, throttling becomes the gas-liquid two-phase working medium of low-temp low-pressure, the gas-liquid two-phase working medium of low-temp low-pressure enters phase-change accumulation energy case 10 through three-way solenoid valve 134, after the heat of absorption solid-liquid phase change energy storage material 102, become gaseous working medium, complete a heat pump fluid circulation, working medium is periodic duty and so forth.
All identical with operational mode with the control method that rotation speed of fan regulates for compressor operating operating mode under operational mode b and c, no longer describe in detail.
Be different from prior art, the invention solves the low problem of existing solar energy drying system energy utilization rate, in the time that solar irradiation intensity is larger, system is carried out phase-change accumulation energy to dry materials time, improves solar energy utilization ratio.The system that realized is round-the-clock uninterrupted, stable and efficiently material is dried, and at solar irradiation deficiency and night, the heat energy that phase-change accumulation energy case stores, as the low-temperature heat source of heat pump, ensures that drying system moves continuously.By the double solar thermal collector evaporimeter that makees heat pump, the evaporation process of cold-producing medium and the thermal-arrest process of solar energy are carried out in an equipment simultaneously, greatly reduce the operating temperature of solar thermal collector, and improved the evaporating temperature of heat pump, thereby there is higher collector efficiency and performance coefficient of heat pump.Realize the one-level intensification of cool-down dehumidification and the drying medium (new wind) of dry waste gas by coagulating type heat pump, reclaim drying medium waste heat, and suction, the exhaust temperature difference of one-level coagulating type heat pump compressor are less, improve the system effectiveness of one-level coagulating type heat pump, and then greatly improved the comprehensive energy efficiency of whole drying device.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (12)
1. a heat-recovery heat pump and the heat pump united drying system of energy-storage solar, it is characterized in that, comprise: energy-storage solar heat pump unit, coagulating type heat-recovery heat pump unit, drying unit and control module, described drying unit is connected with coagulating type heat-recovery heat pump with energy-storage solar heat pump respectively, and described control module is connected with drying unit with energy-storage solar heat pump unit, coagulating type heat-recovery heat pump unit respectively.
2. recuperation of heat according to claim 1 and energy-storage solar heat pump combination drying system, it is characterized in that, described energy-storage solar heat pump unit comprises at least 1 energy-storage solar heat pump, described energy-storage solar heat pump comprises energy-storage box and solar energy heating evaporimeter, in the outlet of described solar energy heating evaporimeter, be connected with the first magnetic valve, the other end of described the first magnetic valve is connected with the entrance of the first gas-liquid separator, the outlet of described the first gas-liquid separator is connected with the air entry of the first compressor, described the first compressor is connected with the first fin-tube type condenser by the second three-way solenoid valve, on the entrance of described condenser, be connected with the second magnetic valve, the other end of described the second magnetic valve is connected with the first heating power expansion valve, the other end of described the first heating power expansion valve is connected with the outlet of the first device for drying and filtering, the entrance of described the first device for drying and filtering is connected with the outlet of the first fluid reservoir, the entrance of described the first fluid reservoir is connected with the first fin-tube type condenser by the first three-way solenoid valve, described covert energy-storage box one end is connected with the 3rd three-way solenoid valve, the other end is connected with the 4th three-way solenoid valve, described the 3rd three-way solenoid valve also respectively with the first three-way solenoid valve, the first magnetic valve is connected with the first gas-liquid separator, described the 4th three-way solenoid valve also respectively with the second three-way solenoid valve, the second magnetic valve is connected with the first heating power expansion valve, the temperature-sensitive bag of described the first heating power expansion valve is located at the porch of the first gas-liquid separator.
3. recuperation of heat according to claim 2 and energy-storage solar heat pump combination drying system, it is characterized in that, the first interface of described the first three-way solenoid valve is connected with the first fluid reservoir, the second interface is connected with the first fin-tube type condenser, the 3rd interface is connected with the first interface of the 3rd three-way solenoid valve, the second interface of described the 3rd three-way solenoid valve is connected with energy-storage box, the 3rd interface respectively with the first magnetic valve, the first gas-liquid separator is connected, the first interface of described the second three-way solenoid valve is connected with the first compressor, the second interface is connected with the first fin-tube type condenser, the 3rd interface is connected with the first interface of the 4th three-way solenoid valve, the second interface of described the 4th three-way solenoid valve is connected with energy-storage box, the 3rd interface is connected with the first heating power expansion valve with the second magnetic valve respectively.
4. recuperation of heat according to claim 2 and energy-storage solar heat pump combination drying system, it is characterized in that, described energy-storage box comprises the first fin-tube type evaporative condenser, energy storage material and lagging casing, described the first fin-tube type evaporative condenser is arranged at lagging casing inside, and described energy storage material is filled in lagging casing inside.
5. recuperation of heat according to claim 4 and energy-storage solar heat pump combination drying system, is characterized in that, described energy storage material is solid-liquid phase change energy storage material.
6. recuperation of heat according to claim 2 and energy-storage solar heat pump combination drying system, it is characterized in that, described solar energy heating evaporimeter comprises multiple evaporating heat exchangers and multiple heat absorbing fins, multiple evaporating heat exchangers set gradually between multiple heat absorbing fins, described multiple heat absorbing fins connects into entirety, described multiple radiating fins top is provided with transparent cover plate, and side is provided with insulation frame, and bottom is provided with insulation backboard.
7. recuperation of heat according to claim 1 and energy-storage solar heat pump combination drying system, it is characterized in that, described coagulating type energy recovery pump unit comprises at least one coagulating type energy recovery pump, described coagulating type energy recovery pump comprises the second fin-tube type condenser and the second Fin and tube evaporator, one end of described the second fin-tube type condenser is connected with the exhaust outlet of the second compressor, the other end is connected with the entrance of the second fluid reservoir, the outlet of described the second fluid reservoir is connected with the entrance of the second device for drying and filtering, the outlet of described the second device for drying and filtering is connected with the second heating power expansion valve, the other end of the second heating power expansion valve is connected with the entrance of the second Fin and tube evaporator, the outlet of the second Fin and tube evaporator is connected with the entrance of the second gas-liquid separator, the outlet of described the second gas-liquid separator is connected with the air entry of the second compressor, the temperature-sensitive bag of described the second heating power expansion valve is located at the porch of the second gas-liquid separator.
8. recuperation of heat according to claim 1 and energy-storage solar heat pump combination drying system, it is characterized in that, described drying unit comprises drying shed, air heat case and air exhaust box, the air outlet of described drying shed is connected with air heat case, exhaust outlet is connected with air exhaust box, in described air heat case, be provided with the first fin-tube type condenser, the second fin-tube type condenser and the first adjustable speed fan, described the first fin-tube type condenser, the second fin-tube type condenser and the first adjustable speed fan array from left to right, in described air exhaust box, be provided with the second Fin and tube evaporator and the second adjustable speed fan, described the second Fin and tube evaporator is arranged on water-supporting disc, on described water-supporting disc, be provided with drainpipe, described the second adjustable speed fan is arranged on the second Fin and tube evaporator one side.
9. recuperation of heat according to claim 1 and energy-storage solar heat pump combination drying system, it is characterized in that, described control module comprises controller, the first temperature signal probe, the second temperature signal probe and the 3rd temperature signal probe, described controller is popped one's head in the first temperature signal respectively, the second temperature signal probe, the 3rd temperature signal probe, the first magnetic valve, the second magnetic valve, the first three-way solenoid valve, the second three-way solenoid valve, the 3rd three-way solenoid valve, the 4th three-way solenoid valve, the first compressor, the second compressor, the first adjustable speed fan is connected with the second adjustable speed fan, the first described temperature signal probe is arranged at heat absorbing fins surface, the second described temperature signal probe is arranged between the first fin-tube type condenser and the second fin-tube type condenser, the 3rd described temperature signal probe is arranged between the first fin-tube type condenser and the air outlet of air heat case.
10. recuperation of heat according to claim 1 and energy-storage solar heat pump combination drying system, it is characterized in that, described energy-storage solar heat pump unit comprises the band energy-storage solar heat pump of multistage setting, and described coagulating type energy recovery pump unit comprises the coagulating type energy recovery pump of multistage setting.
The control method of 11. 1 kinds of heat-recovery heat pumps as claimed in claim 1 and the heat pump united drying system of energy-storage solar, is characterized in that, comprises following operational mode:
A. solar heat pump drying mode: when the design temperature T of solar energy heating evaporimeter meets the T that imposes a condition
d< T < T
g, the first temperature signal probe sends temperature to controller, controller carries out sending control instruction after logic analysis to temperature signal and cuts out the 3rd solenoid electric valve and the 4th solenoid electric valve, and open the first magnetic valve, the second magnetic valve, the first three-way solenoid valve and the second three-way solenoid valve, coagulating type heat-recovery heat pump carries out main air heating, solar energy heating evaporimeter is as low-temperature heat source, solar heat pump carries out secondary air heating, the second temperature signal probe of air heat case inside and the 3rd temperature signal probe detected temperatures, and control to adjust temperature and air quantity by second controller, the air of heating is sent into air heat case,
B. solar heat pump is dried and phase-change accumulation energy pattern: as the design temperature T of solar energy heating evaporimeter > T
gtime, the first temperature signal probe sends temperature to controller, controller carries out sending control instruction after logic analysis to temperature signal and opens the first three-way magnetic valve to the four three-way magnetic valves and the first magnetic valve and the second magnetic valve, coagulating type heat-recovery heat pump carries out main air heating, solar energy heating evaporimeter is as low-temperature energy sources, the condensation heat part that solar heat pump produces enters energy-storage box for phase-change accumulation energy, another part enters air heat case, carry out secondary air heating, the second temperature signal probe of air heat case inside and the 3rd temperature signal probe detected temperatures, and control to adjust temperature and air quantity by controller, the air of heating is sent into air heat case,
C. energy heat pump drying pattern is got in phase transformation: as the design temperature T of solar energy heating evaporimeter < T
dtime, the first temperature signal probe sends temperature to controller, controller carries out sending control instruction after logic analysis to temperature signal and cuts out the first magnetic valve, the second magnetic valve, open the first three-way solenoid valve to the four three-way solenoid valves, coagulating type heat-recovery heat pump carries out main air heating, the heat energy that energy-storage box stores is as low-temperature heat source, the condensation heat that the generation of energy heat pump is got in phase transformation enters air heat case, carry out secondary air heating, the second temperature signal probe of air heat case inside and the 3rd temperature signal probe detected temperatures, and control to adjust temperature and air quantity by controller, the air of heating is sent into air heat case.
The control method of 12. heat-recovery heat pumps according to claim 11 and the heat pump united drying system of energy-storage solar, is characterized in that, described T
dand T
gfor the value that requires to set according to different material drying process.
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