CN1924498A - Heat pipe hot pump composite drying power source system - Google Patents
Heat pipe hot pump composite drying power source system Download PDFInfo
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- CN1924498A CN1924498A CN 200610068824 CN200610068824A CN1924498A CN 1924498 A CN1924498 A CN 1924498A CN 200610068824 CN200610068824 CN 200610068824 CN 200610068824 A CN200610068824 A CN 200610068824A CN 1924498 A CN1924498 A CN 1924498A
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- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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Abstract
This invention relates to energy saving technique field and to one heat tube pump compound dying and power system, which comprises m pieces of heat pump sub systems, n heat tube heat recycle sub system, water block board, air flow sub system, wind temperature control sub system, drying chamber, wherein, the heat tube cooling recycle sub system vapor device is fixed in front of heat pump sub system and water block board is fixed behind heat pump sub system.
Description
Technical field:
The present invention relates to field of energy-saving technology, especially a kind of heat pipe energy-saving technology and heat pump energy-conserving technology are organically combined and the high-efficiency and energy-saving type heat pipe hot pump composite drying power source system that forms.
Technical background:
Drying operation relates to the wide spectrum of national economy, and it is not only the indispensable basic production link of large quantities of industrial and agricultural products, also is the energy consumption rich and influential family of China, and used energy consumption accounts for about 12% of national economy total energy consumption; In addition, the pollution that dry run causes usually is the important source of China's environmental pollution, so the development of the progress of dry technology and whole national economy has relation very closely.Two kinds of dry branch artificial drying and air dries, all artificial dry runs all need consumes energy, promptly need the material that heat transferred is dried; Heat transfer type mainly comprises three kinds of heat conduction, convection current, radiation, and wherein, convective drying (also claiming pneumatic conveying drying) is most widely used a kind of drying mode.Desire realizes convective drying, must provide humidity is relatively low, temperature is higher relatively gas as dry source of the gas, and provide the system of this source of the gas to be called drying power source system.At present, hot-blast stove or vapor heat exchanger are drying power source system main in the pneumatic conveying drying, this dual mode all be unable to do without the burning of boiler or stove, what China adopted at present is middle-size and small-size simple and easy coal-burning boiler or hot-blast stove basically, most of no desulfurization and reliable cleaner, the thermal efficiency is low, seriously polluted; These problems are anxious to be solved.Heat pump techniques is an energy-efficient technology in the present age, is applied to dry field and has its unique advantages: the electric energy of every consumption 1kW, can obtain 3-8kW or more cold, and with the highly humid air that the cool drying process is discharged, realize cool-down dehumidification; Also can obtain 4-9kW or more thermal energy simultaneously, can be used for the air heat after drying to the ventilation temperature that requires.Heat exchange of heat pipe is a kind of heat of transformation conversion and transfer device, can reach the purpose of raising gas-gas heat exchange heat transfer coefficient by the method that adopts cold and hot both sides to strengthen simultaneously, has high gas-gas heat exchanger effectiveness; Simultaneously, volume compact, fluid flow pressure are fallen and little, are recyclablely utilized multiple waste heat, can adapt to multiple thermal source; In addition, also have long service life, reliability height, simple in structure, be convenient to characteristics such as maintenance.At present, be widely used in the occasion of multiple waste heat recovery, obtained obvious energy-saving effect, so this technology is called as the heat pipe energy-saving technology.
Up to now, the heat pump energy-conserving technology provides the system of drying power source to be applied to the dry run of partial material, but application surface is also very little, also have boundless market prospects, and heat pipe hot pump is combined with each other, constitute new more energy-conservation drying power source system, still be in and analyze and the discussion stage, also do not have the commercially produced product listing.Its main cause is: also there is certain difficulty in the combination of existing heat pipe form and heat pump techniques, simultaneously, how science, reasonably heat pipe, heat pump are combined with each other, also have many problems of need analysing in depth and inquiring into.
Summary of the invention:
The objective of the invention is to overcome the shortcoming that exists in the prior art, seek that design preparation is a kind of to be organically combined heat pipe energy-saving technology and heat pump energy-conserving technology, the drying power source of structure novel high-efficiency and energy-saving, the energy consumption of reduction dry run reduces the pollution of dry run to environment.
To achieve these goals, agent structure of the present invention is by m heat pump subsystem, n heat pipe cold recovery subsystem, water fender, the air subsystem that flows, ventilation temperature RACS and hothouse (or between drying shed) are one by air current flow direction organic assembling, form the cold that the energy high efficiente callback utilizes heat pump subsystem evaporimeter, reduce the drying power source system of dry run energy consumption, the evaporimeter of its heat pipe cold recovery subsystem is installed in before the evaporimeter of heat pump subsystem, water fender is installed in after the evaporimeter of heat pump subsystem, and the condenser of heat pipe cold recovery subsystem is installed in after the water fender.Air after the evaporator cools of heat pump subsystem is dried enters in the condenser of heat pipe cold recovery subsystem, cold is passed to working medium in the heat pipe condenser, make the gaseous working medium in the heat pipe change liquid refrigerant into, condensed liquid refrigerant flows in the fluid reservoir, solution circulation pump extracts liquid refrigerant from fluid reservoir, through the liquid transport pipe liquid refrigerant is transported to knockout, liquid refrigerant is distributed to each evaporation pipeline in the evaporimeter equably by the distribution of knockout and equal length tube bank; In the evaporation pipeline, liquid refrigerant absorbs the air heat of the heat pipe evaporator of flowing through, the partially liq gasification, this gas-liquid two-phase two phase flow pipe of flowing through enters gas-liquid separator and realizes gas-liquid separation, subsequently, flow through control valve and carrier pipe of liquid refrigerant got back to fluid reservoir, form the liquid working substance partial circulating, gaseous working medium then enters gas through gas piping and distributes female pipe, deliver gas to by the uniform distribution pipe in each pipeline of condenser, sorption type heat pump subsystem evaporator cools is dried after the cold of air realizes total condensation once more in condenser pipe, by condensate liquid loopback pipe condensate liquid is sent into fluid reservoir, forms the heat-pipe working medium systemic circulation; In the cyclic process of heat pipe subsystem, the evaporation process of liquid refrigerant has absorbed the heat of the heat pipe evaporator air of flowing through in the heat pipe, realization is pre-cooled to air, reduces the air themperature that enters in the heat pump subsystem evaporimeter, reduces the energy consumption of cooling dehumidification process; The condenser of heat pipe subsystem is that the air after drying heats, and reduces the energy consumption of heating process.
The present invention has totally-enclosed circulating and an amount of two kinds of different types of exhaust ventilation formula, and the fractional distilling tube of heat pump subsystem is installed in outside the system in the totally-enclosed circulating system, and heat unnecessary in the system is discharged into the outside, realizes the balance of heat; An amount of exhaust ventilation formula then by discharging the highly humid air that comes out from hothouse, sucks Cryogenic air simultaneously from environment, realize the balance of heat.
Totally-enclosed circulating system of the present invention, the condenser institute liberated heat of its heat pump subsystem divides two parts, and a part is recovered utilization, is used for further heating by the air after the condenser preheating of heat pipe subsystem, reach ventilation temperature, for dry run provides enough energy; Another part is discharged into external environment condition, realizes the balance of heat.
M among the present invention heat pump subsystem, m=1～10 wherein, when 1 heat pump subsystem, the condenser of heat pump subsystem has inside and outside two condenser serial or parallel connections simultaneously in the totally-enclosed circulating system, realizes the adjusting of ventilation temperature by the heat exhaust of control heat pump subsystem external condensation device; When a plurality of heat pump subsystem, the condenser of part heat pump subsystem is installed in the system by allowing wherein, and the condenser of other heat pump subsystem all is installed in outside the system, realizes the balance of heat; At this moment, realize the adjusting of ventilation temperature, or realize the adjusting of ventilation temperature by controlling 1 or several live load with heat pump subsystem of external condenser by the live load of controlling 1 or several heat pump subsystems with inner condenser.
N among the present invention heat pipe cold recovery subsystem, n=1～20 wherein, its quantity decides according to the characteristics of control object and the structure and the exchange capability of heat of each heat pipe; When n is not 1, mode according to internal circulation hot pipe and outer circulation heat pipe is arranged evaporimeter and condenser, the evaporimeter of the most close heat pump subsystem and condenser are the internal circulation hot pipe subsystem, be the 1st heat pipe subsystem, and be outer circulation heat pipe subsystem from heat pump subsystem evaporimeter and condenser farthest, be n heat pipe subsystem.The essential characteristic of heat pipe cold recovery subsystem is: under the rational prerequisite of configuration, the system quantity of heat pipe cold recovery subsystem is many more, and the heat pump subsystem that can save provides the cold ratio big more, and system is more complicated, simultaneously, it is more and more littler to save the increasing degree of cold ratio.
Heat pipe hot pump composite drying power source system of the present invention, the ventilation temperature that requires when dry run surpasses the maximum temperature that the heat pump subsystem can provide, or evaporating temperature and condensation temperature differ bigger, when the heat supply of using heat pump subsystem has been not optimization scheme, can uses outside other thermal source and assist heating; Be to reduce the auxiliary heat that adds of external heat source, this type systematic can be installed heat pipe backheat subsystem, and the heat pipe of this subsystem is k=1～20; The evaporimeter of heat pipe backheat subsystem is installed in the hothouse return airway, recovery is discharged airborne heat from hothouse, its condenser is installed in the condenser rear portion of heat pump subsystem, further improve by the temperature of heat pump condenser heating back air, reduce the energy consumption in outside auxiliary heat hot source; The adjusting that heat and external capacity realize such drying power source system ventilation temperature that adds by the control external heat source.
The relative setting height(from bottom) of each heat pipe subsystem evaporimeter and condenser among the present invention, mounting means (level or vertical installation or install by a certain inclination angle) are not subjected to any restriction, as long as its fluid reservoir is lower than two heat exchangers, but guarantee that condensate liquid can be back to just operate as normal of fluid reservoir smoothly.If condenser is installed in the fluid reservoir bottom, a condenser reflux solution pump is installed on the heat pipe condenser return duct.
Auxiliary mode of heating of the present invention comprises solar energy and regeneration thermal source; Its main body mounting means and setting height(from bottom) can match with blower fan, air channel, filter and constitute vertical, horizontal or hybrid drying power source system, are applied to carry out in industry, agricultural and the commercial field drying and handle.
The gas-liquid separator of each the heat pipe subsystem among the present invention is parts independently, or the air-liquid separating host tube that is connected as a single entity with evaporimeter; The female pipe of the gaseous working medium of each heat pipe subsystem is independently parts, or is combined into one with even gas-distributing pipe and condenser.
The present invention compared with prior art has following advantage: the one, and using heat pump technology cool-down dehumidification obtains the air after the heat energy heating is dried, non-environmental-pollution and energy savings; The 2nd, use n heat pipe cold recovery subsystem, the low-temperature receiver cold that required heat pump provides reduces significantly; The 3rd, heat pipe backheat subsystem is installed, improve by the temperature of heat pump condenser heating back air, reduced the energy consumption of external heat thermal source; The 4th, have live load or the heat exhaust of heat pump subsystem external condensation device or the modes such as heat and external capacity that add of external heat source of the heat pump subsystem of inner condenser by control, realize the adjusting of ventilation temperature; The 5th, adopt the separate heat pipe form, the working solution carrying capacity that has solved the existence of common separation formula heat pipe is not enough, separatory is inhomogeneous, result of use can not show a candle to problems such as Contiuum type heat pipe; The 6th, each system evaporator is unrestricted with relative setting height(from bottom), the mounting means of condenser, matches with other parts such as blower fan, air channel, filters, constitutes multiple drying power source system; The 7th, by auxiliary mode of heating and other thermal source optimum organization, form the optimum drying power source system; The 8th, in various forms of hot air convection dry runs, range of application is wide.
Description of drawings:
Fig. 1 is the of the present invention the 1st routine workflow and structural principle schematic diagram.
Fig. 2 is the of the present invention the 2nd routine workflow and structural principle schematic diagram.
Fig. 3 is the of the present invention the 3rd routine workflow and structural principle schematic diagram.
Fig. 4 is the of the present invention the 4th routine workflow and structural principle schematic diagram.
Fig. 5 is the of the present invention the 5th routine workflow and structural principle schematic diagram.
Fig. 6 is the of the present invention the 6th routine workflow and structural principle schematic diagram.
The specific embodiment:
The m that relates in the invention process heat pump subsystem, a n heat pipe cold recovery subsystem, water fender, the mobile subsystem of air, ventilation temperature RACS, hothouse (or between drying shed) are indispensable part; The high temperature drying power source system also comprises k heat pipe backheat subsystem and outside auxiliary thermal source.Fig. 1 has provided 6 kinds of different workflows and structural principle to Fig. 6, critical piece comprises temperature controller 1, device for drying and filtering 2, choke valve 3, system's external condensation device 4, temperature signal line 5, reservoir 6, flow control valve 7, the female pipe 8 of the gaseous working medium of outer circulation heat pipe cold recovery subsystem, the female pipe 9 of the gaseous working medium of internal circulation hot pipe cold recovery subsystem, water fender 10, heat pump compressor 11, the evaporimeter 12 of internal circulation hot pipe cold recovery subsystem, the equal liquid pipe 13 of equal length of outer circulation heat pipe cold recovery subsystem, the evaporimeter 14 of outer circulation heat pipe cold recovery subsystem, temperature sensor 15, the condenser 16 of heat pump subsystem, the condenser 17 of outer circulation heat pipe cold recovery subsystem, the condenser 18 of internal circulation hot pipe cold recovery subsystem, the equal liquid pipe 19 of the equal length of internal circulation hot pipe cold recovery subsystem, the condenser condensation water carrier pipe 20 of outer circulation heat pipe cold recovery subsystem, the condenser condensation water carrier pipe 21 of internal circulation hot pipe cold recovery subsystem, the evaporimeter 22 of heat pump subsystem, the knockout 23 of internal circulation hot pipe cold recovery subsystem, the two phase flow of heat pipe cold recovery subsystem is carried tube bank 24, the knockout 25 of outer circulation heat pipe cold recovery subsystem, the circulation solution carrier pipe 26 of internal circulation hot pipe cold recovery subsystem, the gas-liquid separator 27 of internal circulation hot pipe cold recovery subsystem, the gas-liquid separator 28 of outer circulation heat pipe cold recovery subsystem, the pressure-regulating valve 29 of internal circulation hot pipe cold recovery subsystem, the pressure-regulating valve 30 of outer circulation heat pipe cold recovery subsystem, air feed air channel 31, the fluid reservoir 32 of outer circulation heat pipe cold recovery subsystem, the fluid reservoir 33 of internal circulation hot pipe cold recovery subsystem, the circulation solution pump 34 of internal circulation hot pipe cold recovery subsystem, blower fan 35, the circulation solution pump 36 of outer circulation heat pipe cold recovery subsystem, the circulation solution carrier pipe 37 of outer circulation heat pipe cold recovery subsystem, hothouse (between drying shed) 38, return airway 39, heat pump compressor adjustment control 40, the evaporimeter 41 of heat pump subsystem, heat pump compressor 42, choke valve 43, heat pump subsystem condenser 44, device for drying and filtering 45, reservoir 46, air draft blower fan 47, new wind control valve 48, the female pipe 49 of the gaseous working medium of heat pipe backheat subsystem, the condenser 50 of heat pipe backheat subsystem, the gaseous working medium carrier pipe 51 of heat pipe backheat subsystem, the condenser condensation water carrier pipe 52 of heat pipe backheat subsystem, outside auxiliary heater 53, outside auxiliary heating connecting line (pipe) 54, external heat controller 55, the evaporimeter 56 of heat pipe backheat subsystem, the equal liquid pipe 57 of the equal length of heat pipe backheat subsystem, the knockout 58 of heat pipe backheat subsystem, the gas-liquid separator 59 of heat pipe backheat subsystem, the fluid reservoir 60 of heat pipe backheat subsystem, the pressure-regulating valve 61 of heat pipe backheat subsystem, the circulation solution pump 62 of heat pipe backheat subsystem, the circulation solution carrier pipe 63 of heat pipe backheat subsystem, the two phase flow of heat pipe backheat subsystem is carried tube bank 64.
Operation principle of the present invention and effect are:
The heat pump subsystem: with Fig. 1 is example, comprise heat pump compressor 11, evaporimeter 22, device for drying and filtering 2, choke valve 3, system's external condensation device 4, reservoir 6, internal system condenser 16 and two parts such as control valve 7, its operation principle is: heat pump compressor 11 extracts low-pressure gaseous refrigerant from evaporimeter 22, make the liquid refrigerant vaporization in the evaporimeter 22, this gasification absorbs airborne heat, has realized the cooling of air is dried; After the compressed machine pressurization of low-pressure gaseous refrigerant, become gases at high pressure, behind two control valves 7, enter system's external condensation device 4 and internal system condenser 16 respectively, with the air in an amount of heat transferred system, make ventilation temperature reach designing requirement, and unnecessary heat is discharged in the external environment condition, realize the balance of heat; The liquid refrigerant of condensation enters reservoir 6 in the condenser under the high pressure effect, through after device for drying and filtering 2 dry filters, choke valve 3 decompressions, is sent back in the evaporimeter 22 again; So move in circles, continuously air is lowered the temperature and dry and appropriate heating.Its effect is: the original low-temperature receiver that air cooling-down is dried is provided, heat pipe cold recovery subsystem is started, the air after the preliminary preheating of opposite heat tube subsystem further heats simultaneously, reaches the ventilation temperature requirement of design.
Heat pipe cold recovery subsystem is divided into internal circulation hot pipe cold recovery subsystem, outer circulation heat pipe cold recovery subsystem and middle each heat pipe cold recovery subsystem.
Internal circulation hot pipe cold recovery subsystem: comprise evaporimeter 12 and condenser 18, also comprise the condensate liquid feed flow and the distribution portion that constitute by the distribution of solution circulation pump 34, liquid transport pipe 26, knockout 23, equal length tube bank 19 etc.; The gas-liquid two-phase of carrying tube bank 24, gas-liquid separator 27 to constitute by two phase flow flows and separating part; The gas-phase transport and the distribution portion that constitute through the female pipe 9 of carrier pipe and gaseous working medium etc. by gaseous working medium; Collect and storage compartment by the liquid phase that pressure-regulating valve 29, condenser condensation water carrier pipe 21 and fluid reservoir 33 etc. constitute; Above-mentioned evaporimeter 18 is in the same place with condenser 12 and other four part organic connections, constitutes internal circulation hot pipe cold recovery subsystem; Its effect is: continuously with cold from air that condenser 18 contacts be delivered in the air that contacts with evaporimeter 12, reclaim the air fed cold of heat pump subsystem efficiently, make the air that enter before the heat pump subsystem evaporimeter 22 realize precooling; The characteristics of internal circulation hot pipe subsystem are the air themperatures that its inner evaporation and condensation temperature approach 22 outlets of heat pump subsystem evaporimeter, so can be cooled to lower temperature with entering heat pump subsystem evaporimeter 22 preceding air, reach better cold recovery effect.
Outer circulation heat pipe cold recovery subsystem: comprise evaporimeter 14 and condenser 17, also comprise the condensate liquid feed flow and the distribution portion that constitute by the distribution of solution circulation pump 36, liquid transport pipe 37, knockout 25, equal length tube bank 13 etc.; The gas-liquid two-phase of carrying tube bank 24, gas-liquid separator 28 to constitute by two phase flow flows and separating part; The gas-phase transport and the distribution portion that constitute by the female pipe 8 of gaseous working medium carrier pipe and gaseous working medium etc.; Collect and storage compartment by the liquid phase that pressure-regulating valve 30, condenser condensation water carrier pipe 20 and fluid reservoir 32 etc. constitute; Above-mentioned evaporimeter 17, condenser 14 and other four part organic connections constitute outer circulation heat pipe cold recovery subsystem together; Its effect is: continuously with cold from air that condenser 17 contacts be delivered in the air that contacts with evaporimeter 14, be to have reclaimed on the basis of certain cold at the internal circulation hot pipe subsystem, recycle the air fed cold of heat pump subsystem again, make to enter the preceding air realization precooling of internal circulation hot pipe subsystem evaporimeter; The characteristics of outer circulation heat pipe cold recovery subsystem are its inner evaporation and the inside evaporation and condensation temperature height of condensation temperature than internal circulation hot pipe cold recovery subsystem.
Water fender 10: press airflow direction, be positioned at the rear portion of heat pump subsystem evaporimeter 22; Its effect is: airborne liquid water droplets is stopped to get off, avoid occurring water droplet and evaporate once more, increase the phenomenon of air humidity.
The air subsystem that flows: provide power by blower fan 35, air is flowed in air channel 31,39 and hothouse 38, and, finish various heat transfer process successively by each heat exchanger.Its effect is: make air pass through each parts of heat pipe hot pump composite drying power source system of the present invention successively by certain speed, realization is dried and heat treated, and will meet the requirements of air and deliver in the hothouse, continuously realize dry run to material.
Ventilation temperature RACS: from the air feed air channel, obtain the ventilation temperature signal by temperature sensor 15, by temperature signal line 5 this signal is passed to temperature controller 1, temperature controller 1 sends the heat exhaust (Fig. 1, Fig. 2, Fig. 3) that control signal changes system's external condensation device 4, or the input power (Fig. 4) of compressor 11 in the control heat pump subsystem, or the heat exhaust (Fig. 5) of control air draft blower fan 47, or control external heater 53 add heat (Fig. 6).Its effect is: the energy balance that regulating system is inner with outside, realize the control to ventilation temperature.
Hothouse (or between drying shed): multi-form heated-air drying mode, different hothouse (or between drying shed) form is arranged, the way of contact of placement form, material and the air-flow of its material has very big-difference.Its effect is: place the material that is dried, material is fully contacted with air, air provides heat for material, makes moisture vaporization in the material, and simultaneously, air is also in time taken away the moist steam that dry run produces.
Heat pipe backheat subsystem: comprise the female pipe 49 of gaseous working medium, condenser 50, gaseous working medium carrier pipe 51, condenser condensation water carrier pipe 52, evaporimeter 56, the equal liquid pipe 57 of equal length, knockout 58, gas-liquid separator 59, fluid reservoir 60, pressure-regulating valve 61, circulation solution pump 62, circulation solution carrier pipe 63, two phase flow is carried tube bank 64, its operation principle and heat pipe cold recovery subsystem are roughly the same, just its evaporimeter is installed in the air outlet of hothouse (or between drying shed), recycles hothouse (or between drying shed) and discharges airborne waste heat, reduces the air themperature that enters heat pipe cold recovery subsystem simultaneously; The condenser of heat pipe backheat subsystem is installed in after the condenser of heat pump subsystem, is used for further heating the air after drying, and reduces outside auxiliary heating amount.Its effect is: recycle hothouse (or between drying shed) and discharge airborne waste heat, both reduced the energy of outside auxiliary heating, also reduced the air themperature that enters heat pipe cold recovery subsystem, realize more energy-efficient dry run.
Outside auxiliary thermal source: by outside auxiliary heater 53, outside auxiliary heating connecting line (pipe) 54, external heat controller 55 formations such as grade, heater adopts electric heater, or steam and hot-water heater, or the suitable heater of the temperature range that provides by solar energy or biomass energy.Its effect is: further improve ventilation temperature, satisfy the required ventilation temperature requirement of dry run.
Embodiment 1: Fig. 1 is totally-enclosed circulating, and heat pipe cold recovery subsystem is n altogether, the most close heat pump subsystem be internal circulation hot pipe cold recovery subsystem, be outer circulation heat pipe cold recovery subsystem away from the heat pump subsystem.Whole system is made up of heat pump subsystem, n (1≤n≤20) heat pipe cold recovery subsystem, water fender 10, the mobile subsystem of air, ventilation temperature RACS, hothouse (or between drying shed) 38 etc.The heat pump subsystem has 1 evaporimeter 22, and its condenser is formed in parallel by internal condensation device 16 and external condensation device 4, the assignment of traffic ratio in adjusting by two flow control valves 7 in the external condenser; Under the dynamic action of blower fan 35, air flows through the evaporimeter 14 of outer circulation heat pipe subsystem earlier, evaporimeter by heat pipe cold recovery subsystems at different levels in the middle of flowing through again after the appropriateness cooling cools off step by step, enter subsequently in the evaporimeter 12 of internal circulation hot pipe subsystem, by further precooling, the air that is cooled to uniform temperature enters in the evaporimeter 22 of heat pump subsystem, dried by cooling, reach the dew-point temperature of setting, after the humidity of air dropped to the numerical value of design, through water fender 10, remove the inner liquid water droplets that contains; Then enter in the condenser 18 of internal circulation hot pipe cold recovery subsystem, cold is passed to heat-pipe working medium in this condenser, make the gaseous working medium in this heat pipe change liquid refrigerant into, condensed liquid refrigerant flows in the fluid reservoir 33; Air heats up gradually through the condenser of middle heat pipe subsystems at different levels subsequently, enter again in the condenser 17 of outer circulation heat pipe subsystem, the residue cold is passed to heat-pipe working medium in this condenser once more, make the gaseous working medium in the outer circulation heat pipe change liquid refrigerant into, condensed liquid refrigerant flows in the fluid reservoir 32; The air that comes out from the condenser 17 of outer circulation heat pipe subsystem enters the condenser 16 of heat pump subsystem, after being heated to the ventilation temperature of requirement, send into hothouse (or between drying shed) through supply air duct 31, to be dried material heating and take away its wet branch of emitting after, air-flow is sent back to once more the air inlet of blower fan 35 by return airway 39; So move in circles, continuously provide satisfactory air, finish dry run for hothouse (or between drying shed).
The control of ventilation temperature is to obtain temperature signal by temperature sensor 15 from air feed air channel 31, by temperature signal line 5 this signal is passed to temperature controller 1, temperature controller 1 sends the external heat exhaust that control signal changes system's external condenser, realize the adjusting of heat, make ventilation temperature meet the requirements of numerical value.
The startup of present embodiment and running: earlier the present invention is installed by employing common process preparation shown in Figure 1, with each heat pipe cold recovery subsystem, the heat pump subsystem is found time and is charged into an amount of working media, start the compressor of heat pump subsystem and the liquid refrigerant circulating pump of heat pipe cold recovery subsystem, the heat pump subsystem is started working, the cold that its evaporimeter 22 is provided makes the air cooling-down cooling, evaporimeter 22 both sides at the heat pump subsystem produce the temperature difference, heat pipe cold recovery subsystem is started working, the evaporimeter 14 of heat pipe cold recovery subsystem, 12 and the evaporimeter 22 of heat pump subsystem combine, air cooling-down is dried, and the condenser 18 of heat pipe cold recovery subsystem, 17 and the internal system condenser 16 of the heat pump subsystem air appropriate heating after will drying again, simultaneously, the external condensation device 4 of heat pump subsystem has been realized the inside and outside energy balance of system; Behind the certain hour, heat pipe cold recovery subsystem and heat pump subsystem all enter stable duty, and ventilation temperature meets the requirements of numerical value, and the dry run in the hothouse 38 just can begin to carry out, and startup finishes, and has entered normal dry run.
If change the setting value of ventilation temperature, control system can reach the adjusting purpose by changing external heat exhaust; If disturbance appears in the outside, make ventilation temperature depart from setting value, control system also can guarantee that ventilation temperature is constant by changing external heat exhaust.
Embodiment 2: the structure of Fig. 2 and embodiment 1 is basic identical, different is the connected mode of the inside and outside condenser in the heat pump subsystem, inside and outside condenser among the embodiment 1 is a parallel form, suitably adjust the distribution of inside and outside heat by two flow control valves 7, and the inside and outside condenser among the embodiment 2 is the series connection form, flow in two condensers is identical, and the heat of being taken away by the conditioning chamber external condenser is realized the balance of energy fully.The startup of this system and device is identical with embodiment 1 with running.
Embodiment 3: Fig. 3 is totally-enclosed circulating, and is basic identical with the structure of embodiment 2, but the arrangement difference.The condenser of the condenser of heat pipe cold recovery subsystem and heat pump subsystem adopts vertically arranged mode among the embodiment 2, and the condenser of the condenser of heat pipe cold recovery subsystem and heat pump subsystem all adopts horizontally disposed mode in the present embodiment.The startup of this system and device is identical with embodiment 1 with running.
Embodiment 4: Fig. 4 is totally-enclosed circulating, heat pipe cold recovery subsystem among this embodiment is identical with embodiment 1, but its heat pump subsystem is made of m heat pump subsystem, wherein the condenser of part heat pump subsystem is arranged in the system outside fully, as condenser 44, the condenser of other heat pump subsystem then is arranged in internal system, as condenser 16; Condenser is arranged in the heat pump subsystem of system outside fully, only provides cold to system, and the heat pump subsystem that condenser is arranged in internal system then both provided cold to system, and the system of returning provides heat; By controlling the duty that condenser is arranged in the heat pump subsystem of internal system, promptly change the duty of heat pump compressors 11 by adjustment control 40, can make intrasystem heat reach balance, make ventilation temperature satisfy the drying process requirement.The startup of this system and device is identical with embodiment 1 with running.
Embodiment 5: Fig. 5 is an amount of exhaust ventilation formula, heat pipe cold recovery subsystem among this embodiment is identical with embodiment 1, but the layout of heat pump subsystem is different, has only a condenser 16 that is arranged in internal system, that is: the heat pump subsystem is fully discharged into condensation heat in the system; For realizing the heat balance of system, at the exhaust outlet place of hothouse air exhauster 47 is installed, the air that part humidity is higher is discharged to the system outside, simultaneously, new wind control valve 48 is housed in the air channel, replenishes the part air, ensures the quality of products and keeps weighing apparatus.The startup and the running of this system and device are substantially the same manner as Example 1, just also need open air exhauster 47 when starting, and regulate new wind control valve 48.
Embodiment 6: Fig. 6 is an amount of exhaust ventilation formula, heat pipe cold recovery subsystem among this embodiment, the heat pump subsystem, air draft blower fan 47, new wind control valve 48 is identical with embodiment 5, but also be equipped with in the system by the female pipe 49 of gaseous working medium, condenser 50, gaseous working medium carrier pipe 51, condenser condensation water carrier pipe 52, evaporimeter 56, the equal liquid pipe 57 of equal length, knockout 58, gas-liquid separator 59, fluid reservoir 60, pressure-regulating valve 61, circulation solution pump 62, the heat pipe backheat subsystem that circulation solution carrier pipe 63 grades constitute, in addition, also have by outside auxiliary heater 53, outside auxiliary heating connecting line (pipe) 54, external heat controller 55 grades constitute outside auxiliary heating subsystem.Heat pipe backheat subsystem has been recycled the heat of air draft, has reduced the operating temperature of heat pipe cold recovery subsystem and heat pump subsystem simultaneously, guarantees that drying power source system is efficient, safety, stable operation.Present embodiment is applicable to that the ventilation temperature that requires when dry run surpasses the maximum temperature that the heat pump subsystem can provide, or evaporating temperature and condensation temperature differ bigger, the situation when complete using heat pump subsystem heat supply has not been optimized scheme.The startup and the running of this system and device are substantially the same manner as Example 5, just before startup, also need heat pipe backheat subsystem to be found time and charge into an amount of working media, when starting the liquid refrigerant circulating pump of heat pump subsystem and heat pipe cold recovery subsystem, also need open the liquid refrigerant circulating pump 62 of heat pipe backheat subsystem.
Claims (7)
1, a kind of heat pipe hot pump composite drying power source system, it is characterized in that agent structure is one by m heat pump subsystem, a n heat pipe cold recovery subsystem, water fender, the mobile subsystem of air, ventilation temperature RACS and hothouse (or between drying shed) by air current flow direction organic assembling, form and high efficiente callback to utilize the cold of heat pump subsystem evaporimeter, the drying power source system of reduction dry run energy consumption; The evaporimeter of heat pipe cold recovery subsystem is installed in before the evaporimeter of heat pump subsystem, and water fender is installed in after the evaporimeter of heat pump subsystem, and the condenser of heat pipe cold recovery subsystem is installed in after the water fender; Air after the evaporator cools of heat pump subsystem is dried enters in the condenser of heat pipe cold recovery subsystem, cold is passed to working medium in the heat pipe condenser, make the gaseous working medium in the heat pipe change liquid refrigerant into, condensed liquid refrigerant flows in the fluid reservoir, solution circulation pump extracts liquid refrigerant from fluid reservoir, through the liquid transport pipe liquid refrigerant is transported to knockout, liquid refrigerant is distributed to each evaporation pipeline in the evaporimeter equably by the distribution of knockout and equal length tube bank; In the evaporation pipeline, liquid refrigerant absorbs the air heat of the heat pipe evaporator of flowing through, the partially liq gasification, this gas-liquid two-phase two phase flow pipe of flowing through enters gas-liquid separator and realizes gas-liquid separation, subsequently, flow through control valve and carrier pipe of liquid refrigerant got back to fluid reservoir, forms the liquid working substance partial circulating; Gaseous working medium then enters gas through gas piping and distributes female pipe, deliver gas to by the uniform distribution pipe in each pipeline of condenser, sorption type heat pump subsystem evaporator cools is dried after the cold of air realizes total condensation once more in condenser pipe, by condensate liquid loopback pipe condensate liquid is sent into fluid reservoir, form the heat-pipe working medium systemic circulation; In the cyclic process of heat pipe subsystem, the evaporation process of liquid refrigerant has absorbed the heat of the heat pipe evaporator air of flowing through in the heat pipe, realization is pre-cooled to air, reduces the air themperature that enters in the heat pump subsystem evaporimeter, reduces the energy consumption of cooling dehumidification process; The condenser of heat pipe subsystem is that the air after drying heats, and reduces the energy consumption of heating process.
2, heat pipe hot pump composite drying power source system according to claim 1, it is characterized in that described m heat pump subsystem, m=1～10 wherein, when 1 heat pump subsystem, the condenser of heat pump subsystem has inside and outside two condenser serial or parallel connections simultaneously in the totally-enclosed circulating system, realizes the adjusting of ventilation temperature by the heat exhaust of control heat pump subsystem external condensation device; When a plurality of heat pump subsystem, the condenser of part heat pump subsystem is installed in the system by allowing wherein, and the condenser of other heat pump subsystem all is installed in outside the system, realizes the balance of heat; Realize the adjusting of ventilation temperature by the live load of controlling 1 or several heat pump subsystems with inner condenser, or realize the adjusting of ventilation temperature by controlling 1 or several live load with heat pump subsystem of external condenser.
3, heat pipe hot pump composite drying power source system according to claim 1, it is characterized in that described n heat pipe cold recovery subsystem, n=1～20 wherein, its quantity decides according to the characteristics of control object and the structure and the exchange capability of heat of each heat pipe; When n is not 1, mode according to internal circulation hot pipe and outer circulation heat pipe is arranged evaporimeter and condenser, the evaporimeter of the most close heat pump subsystem and condenser are the internal circulation hot pipe subsystem, be the 1st heat pipe subsystem, and be outer circulation heat pipe subsystem from heat pump subsystem evaporimeter and condenser farthest, be n heat pipe subsystem.
4, heat pipe hot pump composite drying power source system according to claim 1, it is characterized in that the ventilation temperature that requires when dry run surpasses the maximum temperature that the heat pump subsystem can provide, or evaporating temperature and condensation temperature differ bigger, when the heat supply of using heat pump subsystem has been not optimization scheme, use the auxiliary heating of outside other thermal source; Be to reduce the auxiliary heat that adds of external heat source, heat pipe backheat subsystem is installed by system, and the heat pipe number of this subsystem is k=1～20; The evaporimeter of heat pipe backheat subsystem is installed in the hothouse return airway, recovery is discharged airborne heat from hothouse, its condenser is installed in the condenser rear portion of heat pump subsystem, further improve by the temperature of heat pump condenser heating back air, reduce the energy consumption in outside auxiliary heat hot source; The adjusting that adds heat and external capacity realization ventilation temperature by the control external heat source.
5, heat pipe hot pump composite drying power source system according to claim 1 is characterized in that having totally-enclosed circulating and an amount of two kinds of different types of exhaust ventilation formula; The fractional distilling tube of heat pump subsystem is installed in outside the system in the totally-enclosed circulating system, and heat unnecessary in the system is discharged into the outside, realizes the balance of heat; An amount of exhaust ventilation formula from the highly humid air that hothouse comes out, sucks Cryogenic air by discharge simultaneously from environment, realize the balance of heat.
6, heat pipe hot pump composite drying power source system according to claim 1 is characterized in that the gas-liquid separator of each heat pipe subsystem, is parts independently, or the air-liquid separating host tube that is connected as a single entity with evaporimeter; The female pipe of the gaseous working medium of each heat pipe subsystem is independently parts, or is combined into one with even gas-distributing pipe and condenser.
7, heat pipe hot pump composite drying power source system according to claim 1 is characterized in that auxiliary mode of heating comprises solar energy and regeneration thermal source; Its main body mounting means and setting height(from bottom) match with blower fan, air channel, filter and constitute vertical, horizontal or hybrid drying power source system.
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| CN2006100688248A CN100406833C (en) | 2006-09-21 | 2006-09-21 | Heat pipe hot pump composite drying power source system |
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| JPH0792351B2 (en) * | 1993-06-28 | 1995-10-09 | 古河電気工業株式会社 | Method and device for filling working fluid into heat pipe |
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