CN106322482A - Cyclic heating device and flow control method for heat collection liquid - Google Patents

Cyclic heating device and flow control method for heat collection liquid Download PDF

Info

Publication number
CN106322482A
CN106322482A CN201610791137.2A CN201610791137A CN106322482A CN 106322482 A CN106322482 A CN 106322482A CN 201610791137 A CN201610791137 A CN 201610791137A CN 106322482 A CN106322482 A CN 106322482A
Authority
CN
China
Prior art keywords
heat
tube
liquid
thermal
collector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610791137.2A
Other languages
Chinese (zh)
Other versions
CN106322482B (en
Inventor
徐荣吉
胡文举
吴青平
王瑞祥
王华生
胡洁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing University of Civil Engineering and Architecture
Original Assignee
Beijing University of Civil Engineering and Architecture
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing University of Civil Engineering and Architecture filed Critical Beijing University of Civil Engineering and Architecture
Priority to CN201610791137.2A priority Critical patent/CN106322482B/en
Publication of CN106322482A publication Critical patent/CN106322482A/en
Application granted granted Critical
Publication of CN106322482B publication Critical patent/CN106322482B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00Hot-water central heating systems
    • F24D3/005Hot-water central heating systems combined with solar energy
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00Details
    • F24D19/10Arrangement or mounting of control or safety devices
    • F24D19/1006Arrangement or mounting of control or safety devices for water heating systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00Hot-water central heating systems
    • F24D3/02Hot-water central heating systems with forced circulation, e.g. by pumps
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems

Abstract

The invention relates to a cyclic heating device and a flow control method for a heat collection liquid. The device comprises a heating cycle and solar heat collector, wherein the heat collector comprises a shell and a heat collection part arranged in the shell; the heat collection part comprises a liquid inlet and distribution tube, a liquid outlet and collection tube, and a pulsating-heat-tube heat collection unit arranged between the liquid inlet and distribution tube and the liquid outlet and collection tube; the pulsating-heat-tube heat collection unit comprises a composite parabolic light condenser, a pulsating-heat-tube heat absorber and a sleeve heat exchanger, the pulsating-heat-tube heat absorber is formed by a plurality of groups of evaporation sections and condensation sections at intervals, and the evaporation sections are arranged on the composite parabolic light condenser in a cross-column manner; and the two ends of a sleeve shell of the sleeve heat exchanger communicate with the liquid inlet and distribution tube and the liquid outlet and collection tube respectively, and the condensation sections are arranged in the sleeve shell. The heat collection liquid forms a flowing path among the liquid inlet and distribution tube, the liquid outlet and collection tube and at least a part of the sleeve heat exchanger. The heating device disclosed by the invention can meet a heating need through adjusting the flow of the heat collection liquid.

Description

Circulation heating apparatus and the flow control method of thermal-arrest liquid
Technical field
The present invention relates to radiant heat energy to utilize field very much, be specifically related to a kind of circulation heating apparatus and thermal-arrest liquid Flow control method.
Background technology
Thermal-arrest liquid in solar thermal collector is by free convection or pump flowing at present.Heat-collecting temperature and flow are passively adjusted Joint, it is impossible to according to actual needs dynamically by adjusting running status (heat-collecting temperature and flow) to adapt to weather and the demand of use Change;And solar thermal collector generally uses the heat-absorbent surface of slab construction to absorb solar energy, and the temperature of heat-absorbent surface is universal Higher than endothermic tube temperature, define a hyperthermia radiation face and leakage hot side, affect collecting efficiency.
At present for the improvement of solar thermal collector, the heat-collecting temperature being primarily directed to heat collector is carried out.As at vacuum tube Heat collector is inserted into metal tube to change fluid flow, or carries out segment set thermal flow process in the thermal-collecting tube of flat plate collector Arranged in series etc..But the optimization to solar thermal collector is extremely limited, the most fundamentally change the heat-collecting capacity of heat collector with And the utilization rate of raising heat collector, make heat collector can automatically adjust thermal-arrest liquid flow high efficiency according to use demand and run, be still Treat the problem optimized further.
Utilize the application that solar thermal collector thermal-arrest carries out heating widely.But the collection in solar thermal collector at present Hot liquid is by free convection or pump flowing, and heat-collecting temperature is affected greatly by solar radiation, and heat-collecting temperature and heat-collecting capacity fluctuation are big, it is impossible to The collection heat level of heat collector is dynamically regulated by the actual demand according to heating.
Summary of the invention
Technical problem
The technical problem to be solved in the present invention is, how to adjust the thermal-arrest temperature of thermal-arrest liquid according to the heating demands of user Degree and heat-collecting capacity.
Solution
In view of this, An embodiment provides a kind of circulation heating apparatus, this circulation heating apparatus includes: Heating circulation, it includes hot water storage tank, heating end and water circulating pump;And solar thermal collector, it include housing and The thermal-arrest portion being placed in described housing;
Wherein, described thermal-arrest portion includes feed liquor separating tube, goes out liquid collector tube and be placed in pulsating heat pipe collection therebetween Hot cell, described pulsating heat pipe heat collection unit includes compound parabolic concentrator, pulsating heat pipe heat extractor and double-tube heat exchanger, described Pulsating heat pipe heat extractor is spaced by some groups of evaporator sections and condensation segment and is formed, and evaporator section is placed in described compound parabolic optically focused across column Device;The two ends of the sheath body of described double-tube heat exchanger respectively with feed liquor separating tube and go out liquid collector tube and connect, described condensation segment is placed in In sheath body;Working medium in described evaporator section absorb by described compound parabolic concentrator reflect can radiate energy very much after, by heat Being delivered to described condensation segment and carry out heat exchange with the thermal-arrest liquid in described double-tube heat exchanger, described thermal-arrest liquid is at described feed liquor Separating tube, described in go out between liquid collector tube and at least some of described double-tube heat exchanger formation flow path, and there is physics On the premise of meaning, it is possible to accessed the number of the described double-tube heat exchanger of described flow path by adjustable mode;Described Heat exchanger in hot water storage tank makes described flow path form closed loop.
For above-mentioned circulation heating apparatus, in a kind of possible implementation, described feed liquor separating tube and described go out liquid Several electrically operated valves are distributed on collector tube, by adjusting the on off state of each described electrically operated valve, are in open state Electrically operated valve make thermal-arrest liquid described feed liquor separating tube, described in go out between liquid collector tube and described double-tube heat exchanger formed can Adjust, the flow path of multistage pulsating heat pipe heat extractor heat absorption;Wherein, on feed liquor separating tube, the direction in downstream is swum over to as arteries and veins The direction that the heat absorption progression of dynamic heat pipe receiver is incremented by, then the endotherm area of the pulsating heat pipe heat extractor of the high-temperature level that progression is higher >=it is in the endotherm area of pulsating heat pipe heat extractor of the relatively low low-temperature level of progression.
For above-mentioned circulation heating apparatus, in a kind of possible implementation, also including control portion, it is electronic with each Valve is electrical connection, for adjusting the on off state of each described electrically operated valve;For adjusting each institute through described control portion For stating the flow path of on off state formation of electrically operated valve, the direction that the heat absorption progression at pulsating heat pipe heat extractor is incremented by On, when total heat absorption progression of pulsating heat pipe heat extractor is odd number, the electrodynamic valve of the most downstream being located on described feed liquor separating tube Door should be closed, be located at described in go out the electrically operated valve of the most downstream on liquid collector tube and should open;When pulsating heat pipe heat extractor When heat absorption progression is even number, otherwise.
For above-mentioned circulation heating apparatus, in a kind of possible implementation, described feed liquor separating tube is additionally provided with tune Amount of restriction control valve, adjusts thermal-arrest liquid in described flow path by the aperture adjusting described regulation flow control valve Flow.
For above-mentioned circulation heating apparatus, in a kind of possible implementation, described solar thermal collector also includes passing Sensor group, comprising: first sensor group, it is located at the upstream of described feed liquor separating tube, is used for detecting thermal-arrest liquid in import The characteristic parameter at place;Second sensor group, its be located at described in go out the downstream of liquid collector tube, be used for detecting thermal-arrest liquid in exit Characteristic parameter;3rd sensor group, it is located in the environment residing for described solar thermal collector, is used for detecting ambient parameter; And heating temperature sensor, it is located on described supply channel, for detecting the temperature for warm fluid;Above-mentioned (first, Two, the 3rd) sensor group and heating temperature sensor electrically connect with described control portion respectively, for providing to described control portion For adjusting the basic parameter of the on off state of each described electrically operated valve.
Preferably, with the axial direction of described capillary heat extractor as length direction, described compound parabolic concentrator is with described Capillary heat extractor adapts in the size of this length direction, and the intercepting ratio of described compound parabolic concentrator is in the range of 0~4/ 5.Preferably, described pulsating heat pipe heat extractor is placed on the focal circle of described compound parabolic concentrator along its length, and described Caliber≤the 4mm of pulsating heat pipe heat extractor.
For above-mentioned direct-expansion type heat pump assembly, in a kind of possible implementation, by described two-way and above described in Set heat exchanger parallel connection forms double-tube heat exchanger pipe group, the import and export of described double-tube heat exchanger pipe group respectively by two grades of liquor separators with Described feed liquor separating tube with described go out liquid collector tube connect.
Present invention also offers the flow control method of a kind of thermal-arrest liquid, this flow control method includes: control portion adopts The parameter of collection solar thermal collector and service data, also gather the supply water temperature of heating circulation;Control portion based on described parameter, Described service data and described leaving air temp, the target letter to solar thermal collector corresponding under selected current heating mode Number is optimized;Control portion obtains the feed liquor separating tube being located at solar thermal collector corresponding when object function is optimal value and goes out The target switch state of each electrically operated valve on liquid collector tube;Wherein, described optimal value is to minimum under fixed temperature and flow Pump merit;The on off state of electrically operated valve is adjusted to target switch state by control portion so that the thermal-arrest liquid of solar thermal collector At feed liquor separating tube, go out between liquid collector tube, double-tube heat exchanger and hot water storage tank, to form adjustable flow path.
For above-mentioned flow control method, in a kind of possible implementation, this flow control method also includes: control Portion shows described leaving air temp and the information drawn according to described parameter and service data, including: the turnover of thermal-arrest liquid Liquid temp, flow and pressure reduction;Current ambient parameter;And the current on off state of each described electrically operated valve;Storage supplies The parameter of warm circulation and service data, recall for follow-up.
Beneficial effect
The heating installation of the present invention improves stability and the efficiency of heating, specifically, by using compound parabolic optically focused Device, pulsating heat pipe heat extractor improve collecting efficiency with the pulsating heat pipe heat collection unit of double-tube heat exchanger composition, and by changing The flow path becoming thermal-arrest liquid adjusts collecting efficiency, and then improves heat-collecting temperature and the heat-collecting capacity pair of solar thermal collector The adaptability of the different heating demands of heating installation.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, it is possible to be more completely more fully understood that the present invention.Accompanying drawing described herein is used for providing A further understanding of the present invention, embodiment and explanation thereof are used for explaining the present invention, are not intended that inappropriate limitation of the present invention.
Fig. 1 illustrates the structural representation (having hot water storage tank) of the circulation heating apparatus of one embodiment of the invention;Fig. 2 illustrates The solar thermal collector cross-sectional schematic of the circulation heating apparatus of one embodiment of the invention.
Fig. 3 illustrates the box in the control portion of the solar thermal collector of the circulation heating apparatus of one embodiment of the present of invention Figure;Fig. 4-1 illustrates a kind of enforcement in the control portion of the solar thermal collector of the circulation heating apparatus of one embodiment of the present of invention The logic diagram (controlling device+remote control to have cooperated) of example;Fig. 4-2 illustrates the circulation of one embodiment of the present of invention The logic diagram (controlling device individually to complete) of the another kind of embodiment in the control portion of the heat collector of heating installation;Fig. 5 illustrates this A kind of logic diagram of the optimal way in the control portion of the solar thermal collector of the circulation heating apparatus of one embodiment of invention.
Reference numerals list
1, feed liquor separating tube 2, pulsating heat pipe heat extractor 3, go out liquid collector tube 4, compound parabolic concentrator 5, electrodynamic valve Door 61, first temperature sensor the 62, second temperature sensor 63, three-temperature sensor 64, heating temperature sensor 7, Flow transducer the 81, first differential pressure pickup measuring point the 82, second differential pressure pickup measuring point 9, flow control valve 10, wind speed pass Sensor 11, solar radiation sensor 12, circulating pump 13, hot water storage tank 14, heat exchanger 15, heating end 16, heating follow Ring pump 17, holding wire 18, base plate 19, heat-insulation layer 20, framework 21, cover-plate glass 22, double-tube heat exchanger.
Detailed description of the invention
Below in conjunction with the accompanying drawings and technical scheme is described in further detail by embodiment.
The circulation heating apparatus of the present invention belongs to a kind of application of solar thermal collector.Specifically, by by solar energy collection The heat storage liquid being attached thereto in logical hot water storage tank 13, as heating source, is added by hot device (hereinafter referred to heat collector) Heat, can radiate very much after energy as heating source more specifically, thermal-arrest liquid in heat collector absorbs.Heat collecting liquid the most herein Liquid in body not physical significance, as being construed to, have mobile performance and can with heat-carrying, the medium of heat transfer, Can be liquid medium, such as calcium chloride concentrated solution, potassium chloride concentrated solution etc..Can also be gaseous medium etc. other there is equivalent merit The medium of energy, such as air, nitrogen, carbon dioxide, argon etc..When air in thermal-arrest liquid is gaseous medium, collection Hot device directly heats air, i.e. without arranging hot water storage tank 13 and arranging heat exchanger in the inner, directly delivers air to User is heated by heating end 15.It is liquid medium or the feelings of other gaseous mediums in addition to air at thermal-arrest liquid Under shape, can be provided with in hot water storage tank 13 so that heat collecting liquid body forms the device (such as heat exchanger) of closed loop, for warm fluid Deliver heat to the end 15 that heats after the heat of absorbing sets hot liquid, from heating end 15, heat is distributed to residing for user Environment in.The present invention is by being optimized the solar collecting performance of heat collector so that heat collector and the heating of circulation heating apparatus Demand is more mated.
The most only as a example by the situation needing hot water storage tank 13, illustrate to realize the detailed process of the present invention.
Embodiment 1
Fig. 1 illustrates the structural representation of the circulation heating apparatus of one embodiment of the invention.
As it is shown in figure 1, when other media that thermal-arrest liquid is except the medium that can directly warm oneself for user, This circulation heating apparatus specifically includes that inside is provided with the hot water storage tank 13 of heat exchanger 14, and provides setting for heat exchanger The heat collector of heating temperature.This heat collector mainly includes housing and the thermal-arrest portion being placed in housing;Housing is mainly used as collection The carrier in hot portion, and ensure that sunlight can expose to thermal-arrest portion through the cover-plate glass 21 of housing.Further as in figure 2 it is shown, The structure of housing mainly includes base plate 18, framework 20, heat-insulation layer 19 and cover-plate glass 21;Wherein: the upper surface of framework 20 covers Covering the cover-plate glass 21 of high printing opacity, the inner side of the framework 20 in addition to upper surface is equipped with heat-insulation layer 19;Base plate 18 is located at framework 20 The top of the heat-insulation layer 19 of bottom.Thermal-arrest portion includes feed liquor separating tube 1, goes out liquid collector tube 3 and be placed in pulsation therebetween Heat collector tube unit, pulsating heat pipe thermal-arrest formant includes compound parabolic concentrator 4 (CPC), pulsating heat pipe heat extractor 2 and set Heat exchange of heat pipe 22, pulsating heat pipe heat extractor 2 is spaced by some groups of evaporator sections and condensation segment and is formed, and evaporator section is placed in across column CPC4;The two ends of the sheath body of double-tube heat exchanger 22 respectively with feed liquor separating tube 1 and go out liquid collector tube 3 and connect, and pulsating heat pipe is inhaled The condensation segment of hot device 2, then as a part for double-tube heat exchanger 22, is placed in sheath body.
Working medium in evaporator section absorb by CPC4 reflect can radiate energy very much after, transfer heat to condensation segment and with institute Stating the thermal-arrest liquid in double-tube heat exchanger 22 and carry out heat exchange, the heat energy of absorption is used for the circulation heating of the present invention by thermal-arrest liquid. Preferred as one, evaporator section arranged side by side uses uniform, parallel arrangement mode.
In the present invention, heat absorption heat up thermal-arrest liquid at feed liquor separating tube 1, go out liquid collector tube 3 and overlap at least partially Form flow path between heat exchange of heat pipe 22, and the heat exchanger 14 being placed in hot water storage tank 13 make this flow path form closed loop, I.e. thermal-arrest liquid in heat exchanger 14 is through circulating pump for function of the confession warm fluid transmission heat of heating after completing it 12 upstreams pumping into feed liquor separating tube 1, after completing the selection of flow path under the control in control portion, through going out liquid collector tube 3 Downstream again flow into heat exchanger 14, the confession warm fluid in hot water storage tank 13 is heated so that for warm fluid heat absorption heat up, So i.e. complete the thermal cycle of a collection.And on the premise of there is physical significance, it is possible to accessed described by adjustable mode The number of the described double-tube heat exchanger 22 of flow path, i.e. makes path variable by certain adjustment mode, as can be the simplest Easy manually adjusts or the change optimizing and revising realizing route in control portion.Confession warm fluid in hot water storage tank 13 is through supplying Warm circulating pump 16 is pumped into and is placed in the heating end 15 that user is indoor, heats for user, and the confession warm fluid of heat release cooling returns To hot water storage tank 13, the most i.e. complete a heating circulation.
Additionally, by CPC4 being fixed on base plate 18, it is achieved that fixing of pulsating heat pipe heat collection unit.Double-tube heat exchanger 22 Two ends respectively with feed liquor separating tube 1 and go out liquid collector tube 3 and be connected, the thermal-arrest liquid in heat exchanger 14 passes through heat collector upstream Heat collector entrance enter double-tube heat exchanger 22 through feed liquor separating tube 1, in double-tube heat exchanger 22 absorb CPC4 reflection heat After, it flow to out liquid collector tube 3, and by the heat collector outlet inflow heat exchanger 14 in heat collector downstream.
Preferred as one, in order to ensure the stability in heat-absorbing structure and thermal conversion efficiency, pulsating heat pipe is absorbed heat On the position of the focal circle that device 2 is placed in CPC4, being placed in of being placed in herein, absolutely not stricti jurise, but by being generally residing in Position relationship reaches the effect that collecting efficiency improves, and as being construed to the position relative to focal circle, deviation is less than Certain numerical value gets final product (such as 0.5mm).There is collection heat the most intensive in being in the range of structures of whole CPC4 due to this position Advantage, is thus advantageous to improve the collecting efficiency of pulsating heat pipe heat extractor 2.
In a kind of possible embodiment, make path variable by certain adjustment mode, as it may be that on pipeline Several electrically operated valve 5 is distributed, by adjusting the on off state of each electrically operated valve 5 so that as the thermal-arrest of heat-absorbing medium Liquid is after the upstream extremity entering liquid separating tube 1 enters heat collector, and the electrically operated valve being in open state makes thermal-arrest liquid enter Liquid separating tube 1, go out to be formed between liquid collector tube 3 and double-tube heat exchanger 22 pulsating heat pipe heat extractor 2 adjustable, multistage heat absorption Target flow path.Wherein, the heat absorption progression being pulsating heat pipe heat extractor 2 with the direction swimming over to downstream on feed liquor separating tube 1 is passed The direction increased, then in order to ensure that thermal-arrest has the meaning of reality, the heat absorption of the pulsating heat pipe heat extractor 2 of the high-temperature level that progression is higher The endotherm area of the pulsating heat pipe heat extractor 2 of area >=the be in relatively low low-temperature level of progression.Thermal-arrest liquid is along this target flowing road During the flowing of footpath, only enter the double-tube heat exchanger 22 that this target flow path comprised and absorb the sun spoke reflected by CPC4 After the heat energy penetrated, finally flowed out to corresponding collection device and/or application scenario by the downstream going out liquid collector tube 3.Such as this In bright, the heating fluid heat transfer of thermal-arrest liquid Yu hot water storage tank 13 by flowing through heat exchanger 14, to realize being in heating end The user in the environment at 15 places is held to heat.
It is arranged at feed liquor separating tube 1 and the switch shape of several electrically operated valves 5 gone out between liquid collector tube 3 by adjustment State so that same heat collector can have different target flow paths, the most different collection calorific intensitys according to practical situation.? In a kind of possible embodiment, the on off state of each electrically operated valve 5 can adjust relatively independently, it is also possible to by therein More than one is as an entirety, carries out linkage and adjusts.With further reference to Fig. 1, in a kind of possible embodiment, electrodynamic valve The installation principle of door 5 can be: from the beginning of the upstream that thermal-arrest liquid enters feed liquor separating tube, pass through at feed liquor separating tube 1 every time After double-tube heat exchanger 22 carries out separatory to thermal-arrest liquid, the supervisor in the downstream of feed liquor separating tube 1 installs and is incorporated to electrodynamic valve Door 5, from being incorporated to the second road electrically operated valve 5, in the downstream of the relevant position going out liquid collector tube 3 that double-tube heat exchanger 22 is connected Also install on the supervisor of side and be incorporated to electrically operated valve 5.
Certainly, the most basic heat absorbing units of the pulsating heat pipe heat collection unit of aforesaid heat collector is mainly by little yardstick CPC4 and corresponding evaporator section are constituted.In a kind of possible embodiment, the length at double-tube heat exchanger 22 comparatively short and When pipe number is more, can be in parallel by double-tube heat exchanger 22 more than two-way or two-way, formed before function is equivalent to single The double-tube heat exchanger pipe group of double-tube heat exchanger 22, i.e. using this double-tube heat exchanger pipe group as most basic heat absorbing units, at feed liquor Separating tube 1 and go out to be provided with between liquid collector tube 3 several such pulsating heat pipe groups, but, each double-tube heat exchanger Guan Zuzhong Each double-tube heat exchanger 22 need to realize it by two grades of liquor separators and with feed liquor separating tube 1 and go out the connection of liquid collector tube 3.
It can be seen that except using single double-tube heat exchanger 22 as in addition to a single most basic unit, it is also possible to The most basic unit that function is suitable is formed by parallel for multichannel double-tube heat exchanger 22.To improve the collection thermal effect of heat collector further Rate.
Additionally, in order to the structural integrity ensureing thermal-arrest portion, CPC4 and pulsating heat pipe heat extractor 2 are in the size of length direction Should adapt, adapting herein, it should be construed to roughly the same, herein roughly the same, as being construed to: pulsation heat The length of tube heat sucker 2 can be slightly longer, and length difference is less than certain critical numerical value (if one side is less than 2cm).Can in one Can embodiment in, be 0~4/5 in the intercepting of CPC4 than scope, and the external diameter of pulsating heat pipe heat extractor 2 to be not more than 4mm (excellent Select 1~4mm, more preferably 2~4mm) when, CPC4 can have and conventional flat plate collector or vacuum tube heat collection function The size (such as height≤50mm) that device is suitable, when CPC4 is suitable with the size of conventional heat collector, it can produce Compare at least 2~5 times of the conventional heat collector effects reaching as high as the focusing ratio of 10 times, hence it is evident that improve collecting efficiency.This Outward, CPC4 can be to utilize the mode machine-shapings such as 3D printing.
It can be seen that present invention CPC4 instead of traditional absorber plate, instead of traditional heat pipe with capillary endothermic tube 2 Or routine endothermic tube, the introducing of CPC4 adds the endothermic heat flow density of pulsating heat pipe heat extractor 2, decreases area of dissipation;By Pulsating heat pipe heat extractor 2 can be preferably disposed in the position of the substantially focal circle of CPC4 in pulsating heat pipe endothermic tube 2, therefore Take full advantage of the condenser performance of CPC4 so that the temperature of the thermal-arrest liquid in pulsating heat pipe endothermic tube 2 within heat collector can Reach theoretic maximum temperaturerise, on the premise of high temp objects area and leaking heat are reduced, improve the collection of heat collector The thermal efficiency.
In a kind of possible embodiment, the switch to each electrically operated valve 5 can be realized by introducing control portion The adjustment of state.With further reference to Fig. 1, if in seven electrically operated valves 5 being so that in Fig. 1 of the feedback result that control portion draws (1,3,5,7) (according to being incorporated to order, five electrically operated valves 5 refer to successively 1 bottom right, right in 2 times a, left side in 3 times, 4 bottom lefts, 5 Upper right, on 6 in, 7 upper left, wherein electrically operated valve (1,3,5,7) i.e. refers to bottom right, a lower middle left side, the electricity of position upper right, upper left Movable valve 5) be open mode, then form target flow path (flow process) as shown by the arrow.But, for through control portion For adjusting the flow path of on off state formation of each electrically operated valve 5, still it is to ensure that thermal-arrest has practical significance, On the direction that the heat absorption progression of pulsating heat pipe heat extractor 2 is incremented by, when the heat absorption progression of pulsating heat pipe heat extractor 2 is odd number, The electrically operated valve 5 being located at the most downstream on feed liquor separating tube 1 should be closed, and is located at out the electricity of the most downstream on liquid collector tube 3 Movable valve 5 should be opened;When the heat absorption progression of pulsating heat pipe heat extractor 2 is even number, otherwise then.
It can be seen that the flow process of thermal-arrest liquid can be changed by changing the on off state of each electrically operated valve 5;By changing Become the flow process of thermal-arrest liquid, it is possible to make to draw that the downstream of liquid collector tube 3 has and different go out liquid temp, such as: be complete at electrically operated valve 5 When opening, the target flow path of the thermal-arrest liquid of formation is parallel-connection flow, and the situation opened at part electrically operated valve 5 Under, then this target flow path includes at least a part of serial flow, particularly in the feelings that the progression being incorporated to electrically operated valve 5 is the highest Under condition, the heat-collecting temperature of thermal-arrest liquid can be significantly hotter than simple parallel-connection flow;Due at above-mentioned parallel-connection flow and serial flow Under (including the sections in series all connecting and comprising parallel branch), thermal-arrest liquid is formed when flowing through double-tube heat exchanger 22 Crushing is different, therefore in the case of flow is identical, can have the pump merit of different pumping thermal-arrest liquid.
Additionally, as it is shown in figure 1, also include the sensor group of the service data for detecting heat collector, be mainly used in controlling The parameter acquisition in portion.Sensor group specifically includes that
I) first sensor group, it is located at the upstream of feed liquor separating tube 1, is used for detecting thermal-arrest liquid in heat collector import department Characteristic parameter, as being located at first temperature sensor 61 of porch (i.e. the upstream of feed liquor separating tube 1) of thermal-arrest liquid, flow Sensor 7 and the first differential pressure pickup measuring point 81 etc.;
Ii) the second sensor group, it is located at out the downstream of liquid collector tube 3, is used for detecting thermal-arrest liquid and exports at heat collector The characteristic parameter at place, as being located at second temperature sensor 62 He in the exit (i.e. going out the downstream of liquid collector tube 3) of thermal-arrest liquid Second differential pressure pickup measuring point 82 etc.;And
Iii) the 3rd sensor group, it is located in the environment residing for heat collector, is used for detecting ambient parameter, as being placed in environment In three-temperature sensor 63, air velocity transducer 10 and solar radiation sensor 11 etc.;
Iv) heating temperature sensor 64, it is located on the supply channel of heating circulation, is used for detecting heating temperature.
Specifically: i), ii), iii) in temperature sensor (61,62,63) at three be respectively used to detect heat collector into and out of The temperature of the thermal-arrest liquid at Kou and the ambient temperature at heat collector place;I) flow transducer 7 in is used for detecting heat collecting liquid The flow of body;I), ii) in differential pressure pickup measuring point (81,82) at two be used for detecting thermal-arrest liquid flow through after heat collector The pressure drop in exit;Iii) air velocity transducer 10 in is for test environment wind speed;Iii) solar radiation sensor 11 in is used In test intensity of solar radiation.
Above-mentioned (first, second, third) sensor group and heating temperature sensor 64 electrically connect with control portion respectively, use Basic parameter in the on off state provided to control portion for adjusting each electrically operated valve 5.The most above-mentioned all of test data Being transferred to control portion by holding wire 17, control portion can be placed in hot water storage tank 13 (such as top), it is also possible to is placed in hot water storage tank Between 13 and heat collector, naturally it is also possible to be located at the inside of heat collector.Heat collector provides to hot water storage tank 13 by heat exchanger 14 Heating source.Heat collector determines collection heat pattern according to the demand of heating temperature, the collection that heat collector is corresponding to current heating mode Flow path and the flow of the thermal-arrest liquid under heat pattern are optimized.I.e. control portion is by controlling the switch shape of electrically operated valve 5 State adjusts the flow process of thermal-arrest liquid, finally realizes the heating under the collection heat pattern corresponding to the demand of different heating temperatures Journey.
Additionally, control portion also flow control valve 9 with the upstream being located at feed liquor separating tube 1 realizes being electrically connected by holding wire 17 Connect, carry out domination set hot liquid flow in flow process by the aperture of regulation flow control valve 9.
But, the topmost function in control portion is for controlling opening of electrically operated valve 5 according to the operation conditions of heat collector Off status;And then change the target flow path of thermal-arrest liquid.As a kind of specific embodiment, with further reference to Fig. 3, control Portion processed has been used for the Row control to thermal-arrest liquid, and this flow control method mainly includes following functions:
31) receive capabilities, it is for gathering and upload the parameter of heat collector and can characterize heat collector running status Data (service data);
32) processing function, it is according to the above-mentioned data that receive, combine currently collect setting that heat pattern had go out liquid Temperature (heating demands), is optimized the object function under current collection heat pattern according to certain Optimized Approaches;
It is to be understood that the Optimized Approaches being mentioned above, existing, ripe being applied to can be used to tear choosing open and adjust Optimized algorithm (as neural network algorithm, ant group algorithm, one by one than equity), it is also possible to the most again compile Journey, or existing algorithm is carried out suitable adjustment, as long as can make currently to collect by adjusting the on off state of electrically operated valve 5 Object function under heat pattern is more excellent.
Additionally, about currently collecting heat pattern, in a kind of possible embodiment, can be preset several in control portion That select, classical target operational mode, each target operational mode can have specific object function, so that it is obtaining It is applicable to the occasion corresponding with target operational mode in the case of obtaining optimal value.Or, it is also possible to according to practical situation, controlling Newly-increased certain or certain several new target operational mode in portion, so that its object function is suitable in the case of obtaining optimal value For the occasion corresponding with new target operational mode.Wherein, the kind of optimal value at least includes with the highest temperature under given flow Rise, to making under liquid temp maximum stream flow and to pump merit minimum under fixed temperature and flow.
33) feedback function, it is for calculating the object function currently integrating heat pattern as each electricity corresponding during optimal value The target switch state of the on off state that movable valve 5 should have, i.e. each electrically operated valve 5;
34) performing function, feedback module is shown that the on off state that each electrically operated valve 5 should have is each with collect by it The current on off state of individual electrically operated valve 5 is compared, and performs order accordingly by sending so that each electrically operated valve 5 On off state be adjusted to target switch state.
It is, of course, also possible to possess other miscellaneous functions such as display, storage, specifically:
35) display function, it is for showing the real-time running state of heat collector by certain form, as can be to fortune Row state carries out classification, is then shown with forms such as " good, normal, overheated ", or according to practical situation and demand, will Some parameter of running status is shown, or the running status that some parameter is characterized with animation streams (such as thermal-arrest liquid Flow path etc.) form shown;
36) storage function, it is for recording and store parameter and the service data of heat collector;Primarily as standby number According to.As can be by the way of recalling data, it is simple to affect heat collector subsequently through the running status of heat collector is obtained The factor of energy, thus carry out improving the research of thermal performance of collectors.Or when heat collector breaks down, can be relevant by recalling Data are as the reference data of accident analysis.
With further reference to Fig. 4-1 and Fig. 4-2, in a kind of possible embodiment, control portion can include controlling device With two ingredients of remote control, by the control portion that cooperated to of two ingredients should possess upper State function " 31~36 ";As, the division of labor of two parts can be: controls its main operational and control etc. that device mainly completes to be correlated with Function, remote control mainly completes the functions such as display.Specifically:
Controlling device as the core component in control portion, it is mainly integrated with following five functions:
4101) data acquisition function, gathers the service data of heat collector and transmits this data to remote control, its In: service data can include but not limited to: heat-collecting temperature, flow, the flowing pressure loss of thermal-arrest liquid, ambient temperature, wind Speed, one or more in intensity of solar radiation, be mainly used according to parameter calculate the fluid temperature rise of heat collector, leaking heat and Crushings etc. characterize the parameter of performance characteristic, or some intermediate parameters, or are used for some parameter at remote control end The running status reflected shows in real time;And the current switch states of each electrically operated valve 5, it is used as electrically operated valve 5 Normal condition when on off state is adjusted;
4102) pattern confirms function, accepts the pattern confirmation instruction that remote control is selected, and pattern confirms that instruction can To include: several existing heat collector operational modes select some as currently collecting heat pattern, or can according to work as Front heat-collecting temperature and flow, be manually entered new heat collector operational mode at remote control end, as currently collecting hot-die Formula;
4103) calculation function, is optimized the object function under current collection heat pattern, calculates object function and obtain The target switch state that each electrically operated valve 5 corresponding when the figure of merit should have, and with reference to aforementioned 4101) in benchmark shape State, sends corresponding control instruction to each electrically operated valve 5;
4104) storage and writing function, stores and records the relevant parameter of heat collector and service data (with real time execution The data that state is relevant), parameter can include but not limited to that the size of each parts of heat collector is (such as pulsating heat pipe heat extractor 2 He The size of CPC4), service data can include but not limited to heat-collecting temperature, flow, thermal-arrest liquid flowing pressure loss, environment temperature Degree, wind speed and intensity of solar radiation etc.;And the on off state recording each electrically operated valve 5 (includes current and after adjusting ).Storage is primarily to facilitate with writing function and data to be recalled when needed, as it may be that carrying out the performance of heat collector Research and during overall merit, or when the fault of heat collector is analyzed, as reference data.
In addition to the basic function that aforementioned four should possess as a rule, it is also possible to there is following functions:
4105) display function, according to the actual requirements, can optionally show the part real-time running state of heat collector, Include but not limited to heat-collecting temperature, flow, thermal-arrest liquid flowing pressure loss, ambient temperature, wind speed, intensity of solar radiation, electricity Movable valve on off state and thermal-arrest liquid flow.Display herein, is primarily to facilitate site examining and repairing and the manipulation of heat collector.
Remote control is mainly integrated with following two function:
4201) display function, optionally receiving control device collection or the parameter that calculates or data, permissible Include but not limited to receive heat-collecting temperature, flow, thermal-arrest liquid flowing pressure loss, ambient temperature, wind speed and solar radiation strong Degree, is mainly used in showing accordingly on the display interface that remote control end has, in order to user understands currently Heat collector running environment situation and heat collector operational factor, and the on off state of each electrically operated valve 5 can also be received, also it is Mainly it is easy to user and understands current heat collector running status.
4202) pattern confirms function, and sending mode confirms that instruction, to controlling device, is used for controlling device and selects heat collector Currently collect heat pattern, and the object function under current collection heat pattern is optimized, so that the flow process of thermal-arrest liquid is able to Optimize.
The calculating that the parameter of the heat collector that control device mainly explained below collects and service data can participate in, As being mainly used in calculating the temperature rise of heat collector, leaking heat and the pressure loss of thermal-arrest liquid.
The thermal-arrest liquid inlet temperature in heat collector porch can be set as Tin, the area of heat collector is A, and thermal-arrest liquid exists Outlet temperature T in heat collector exitout, the progression (being from upstream to the number of the double-tube heat exchanger 22 that downstream comprises) of heat collector For n, the area of the most each grade of distribution is Ai, it is assumed that intensity of solar radiation is I, and ambient temperature is Ta, the flow of thermal-arrest liquid is m;
Then the temperature rise of the first order is:
First, the temperature rise of the first order meets below equation (1):
IA1-Ql_1=cm (Tout_1-Tin_1)=cm Δ T1 (1)
In formula, Δ T1Temperature rise for first order thermal-arrest liquid;C is the specific heat of thermal-arrest liquid;Tin_1First order thermal-arrest liquid Inlet temperature, Tin_1=Tin;Tout_1For the outlet temperature of first order thermal-arrest liquid, it also it is the entrance temperature of second level thermal-arrest liquid Degree: Tin_2=Tout_1;Ql_1For the leaking heat of first order heat extractor,
In formula, h is the convection transfer rate of heat collector outer surface and environment, and this convection transfer rate only has with ambient wind velocity Close, h=f (v);Ah_1Exterior surface area for first order pulsating heat pipe heat extractor 2;Then can get the temperature of the thermal-arrest liquid first order It is upgraded to:
ΔT 1 = IA 1 - Q l _ 1 c m = IA 1 - hA h _ 1 ( T o u t _ 1 + T i n _ 1 2 - T a ) c m - - - ( 2 )
If the mean temperature of first order thermal-arrest liquid isThen can get first order temperature rise is:
ΔT 1 = IA 1 - hA h _ 1 ( T 1 - T a ) c m - - - ( 3 )
Same computational methods, second level heat collecting liquid body temperature rises computing formula and is:
IA2-Ql_2=cm (Tout_2-Tin_2)=cm Δ T2 (4)
Q l _ 2 = hA h _ 2 ( T o u t _ 2 + T i n _ 2 2 - T a ) - - - ( 5 )
ΔT 2 = IA 2 - hA h _ 2 ( T o u t _ 2 + T i n _ 2 2 - T a ) c m = IA 2 - hA h _ 2 ( T 2 - T a ) c m - - - ( 6 )
Then i-stage temperature rise is:
ΔT i = IA i - hA h _ i ( T o u t _ i + T i n _ i 2 - T a ) c m = IA i - hA h _ i ( T i - T a ) c m - - - ( 7 )
The temperature rise of n-th grade is:
ΔT n = IA n - hA h _ n ( T n - T a ) c m - - - ( 8 )
If it can be seen that the collector area of every one-level pulsating heat pipe heat extractor 2 is identical with endotherm area, then along with progression Increase, endothermic temperature is more and more higher, then leaking heat increases therewith;And after progression increases to a certain degree, the suction of heat collector Heat is equal with leaking heat, and now, the temperature of thermal-arrest liquid reaches the hot temperature of maximum set, will not increase further, follow-up collection Thermal flow process only can waste pump merit.Therefore, heat collector to be improved go out liquid temp, then need according to every one-level heat collecting liquid body temperature Leaking heat after Shenging improves the heat extractor area of every one-level step by step.
Wherein it is determined that the computational methods of every one-level pipeline number and pressure drop are:
Owing to the closedown of electrically operated valve 5 is that the flow process making thermal-arrest liquid changes, therefore, the flow process of thermal-arrest liquid Decision process mainly finds the electrically operated valve 5 being closed in flow process.The decision method of idiographic flow is:
First determining whether the most single flow process, the double-tube heat exchanger 22 of the most all sockets is in parallel.When meet remove into Outside the electrically operated valve 5 of liquid separating tube most end one-level is closed, other all of electrically operated valves 5 are all open modes Under situation, thermal-arrest liquid is single parallel-connection flow.
It not single parallel-connection flow at thermal-arrest liquid, when i.e. thermal-arrest liquid is multipaths, first divide at feed liquor First electrically operated valve 5 closed found by liquid pipe 1.I.e. j=1, i start to be gradually increased from 1, as a (x, 1)=0, first-class The pipeline number of journey is x;Then going out to find on liquid collector tube 3 second electrically operated valve 5 closed, i.e. j=2, i continue to increase from x Adding, as a (y, 2)=0, then the pipeline number of second procedure is y-x;Then the next electrically operated valve 5 closed should divide at feed liquor On liquid pipe 1, then, find the electrically operated valve 5 that the next one is closed on feed liquor separating tube 1, i.e. j=1, i continue to increase from y, work as a During (z, 2)=0, then the pipeline number of the 3rd flow process is z-y;The like until i=n-1 just can obtain every one-level pipeline number. Two electrically operated valves 5 of last string are finally to flow out from going out liquid collector tube 3 for domination set hot liquid, last electrically operated valve 5 On off state by flow process numerical control system: when flow process pipeline number is odd number, the electrically operated valve 5 on feed liquor separating tube 1 be close, Go out what the valve on liquid collector tube 3 was on;When flow process number is even number, the electrically operated valve 5 on feed liquor separating tube 1 is on , going out the electrically operated valve 5 on liquid collector tube 3 is to close.
Whole heat collector i.e. can be calculated after having determined the number of the double-tube heat exchanger 22 in flow process and each flow process The pressure drop of thermal-arrest liquid.It is equal to the pressure drop sum of every one-level.And the pressure drop of every one-level equal to double-tube heat exchanger 22 along journey pressure Fall and partial drop of pressure sum.Wherein:
Single double-tube heat exchanger 22 along journey pressure drop be:
h f = λ · L D · V 2 2 g - - - ( 9 )
In formula, λ is along journey pressure-drop coefficient, owing to the flowing of thermal-arrest liquid is generally laminar flow, desirableL For endothermic tube length;V is the flow velocity of thermal-arrest liquid in endothermic tube;G is acceleration of gravity;Re is the Reynolds number of thermal-arrest liquid;ρ is Heat collecting liquid body density;D is endothermic tube external diameter;μ is thermal-arrest liquid dynamic viscosity;
Partial drop of pressure is:
h ξ = ξ · V 2 2 g - - - ( 10 )
In formula, ξ is partial drop of pressure coefficient, owing to the partial drop of pressure of heat collector is mainly feed liquor separating tube 1 to sleeve heat exchange The pressure drop that device 22, double-tube heat exchanger 22 cause to the caliber sudden change and flow direction going out liquid thermal-collecting tube 3, as in a kind of concrete reality Executing in mode, ξ can be taken as 1.
Further, from formula (8), the outlet temperature for the thermal-arrest liquid of multistage heat collector is strong with solar radiation Degree, heat collector area, heat extractor area, leak the hot coefficient of heat transfer, ambient temperature, thermal-arrest specific heat of liquid and flow and have relation.Therefore When given thermal-arrest class of liquids, it is believed that the specific heat of thermal-arrest liquid is constant;In given intensity of solar radiation Under under situation, the going out liquid temp and ambient temperature, flow, go out the area of liquid heat collector 3, pulsating heat pipe heat extractor 2 of heat collector Area, leak the relating to parameters such as the hot coefficient of heat transfer, it may be assumed that
T o u t _ i = T i n _ i + ΔT n = T i n _ i + I - hA h _ n ( T n - T a ) c m = f ( h , A h _ n , A n , m , T a ) - - - ( 11 )
And it is relevant with wind speed to leak hot coefficient, it may be assumed that
Tout_i=f (v, Ah_n,An,m,Ta) (12)
And the energy utilization efficiency of heat collector, its except with the caloric receptivity of thermal-arrest liquid mutually outside the Pass, also with pumping thermal-arrest The pump merit of liquid is relevant.Specifically: heat collector net efficiency=(heat collecting liquid body temperature liter-pump merit)/solar radiation energy.And pump merit Then flow and flow process with thermal-arrest liquid have relation.It is to say, want to obtain the net energy utilization ratio of higher heat collector, On the premise of the confession liquid temp meeting thermal-arrest liquid and flow, to reasonably plan the flow process of thermal-arrest liquid, and by the greatest extent Amount reduces the pressure drop of thermal-arrest liquid and reduces pump merit.
Therefore, under the conditions of different solar radiations, pulsation can be adjusted by adjusting the on off state of electrically operated valve 5 The area of heat pipe receiver 2 and go out liquid temp and net energy profit by what the area of heat collector and flow adjusted heat collector Use efficiency.As the mode of operation of heat collector can include following three kinds of target operational mode:
1) maximum temperaturerise under given flow, this pattern is applicable to the situation requiring the heat-collecting temperature of heat collector.
2) being made the maximum stream flow under liquid temp, this pattern is applicable to the situation requiring the heat-collecting capacity of heat collector.
3) giving the minimum pump merit under fixed temperature, flow, this pattern is applicable to requirement thermal-arresting energy-saving and runs, from wasted work minimum Situation.
With reference to Fig. 1, for more clearly expressing the path of thermal-arrest liquid, represent as matrix A={ a (i, j) } can be passed through The on off state of each electrically operated valve 5.Wherein (i, j) represents the coordinate of electrically operated valve 5, and wherein, i represents along thermal-arrest liquid The columns of flow direction, j represents the line number along thermal-arrest liquid flow direction.As: represent during j=1 that this electrically operated valve 5 is feed liquor Represent that this electrically operated valve 5 is the electrically operated valve 5 on liquid collector tube 3 during electrically operated valve 5, j=2 on separating tube 1.A (i, j) Value denotation coordination is (i, the on off state of electrically operated valve 5 j);As may is that, as a, (i, when j)=1, represents that electrically operated valve 5 is Opening, and (i, when j)=0, then it represents that electrically operated valve 5 is closed mode as a.Each electrically operated valve of the most whole heat collector The on off state of 5, can be expressed as (0,1) matrix of n × 2, and (i, value j) describes whole i.e. can to pass through each a The flow process of the thermal-arrest liquid of heat collector.
The concrete optimized algorithm that the on off state of electrically operated valve 5 is controlled by control portion may be summarized to be:
First it is the setting of object function: according to user's request or based on research and/or the analysis of practice, set some Individual alternative object function, as alternative object function can include following three kinds of functions:
I) maximum temperaturerise under the index that object function draws is given flow, it may be assumed that
When m=constant, f1=max (Δ T);Wherein Δ T represents the maximum temperature rise of thermal-arrest liquid;
Ii) index that object function draws is to the maximum stream flow made under liquid temp, it may be assumed that
As thermal-arrest liquid discharge liquid temp ToutDuring=constant, f2=max (m);
Iii) index that object function draws is to the minimum pump merit making under liquid temp, it may be assumed that
When going out liquid temp ToutDuring with thermal-arrest fluid flow m=constant, f3=min (Ppump)。
Owing to heating temperature is set, i.e. heat-collecting temperature is also it has been determined that the most above-mentioned object function iii) corresponding collection Heat pattern is i.e. applicable to the present invention, will be applied to circulation heating apparatus by heat collector.
Remote control can select any of which in above-mentioned object function as the mesh under current collection heat pattern Scalar functions, the collection heat pattern of the most corresponding a certain emphasis (particular requirement under applicable situation) of this object function.Can in one In the embodiment of energy, the process being optimized this collection heat pattern may include that
Initialization step: the n of stochastic generation M the flow process meeting the above-mentioned thermal-arrest liquid that can be used for describing whole heat collector The matrix of × 2, the value of element a [i, j] the most therein randomly selects between zero and one, rejects in above-mentioned M matrix and does not has physics The matrix of meaning, as not having the matrix of physical significance at least to include:
A) cause the matrix of the flow process open circuit of thermal-arrest liquid, i.e. need to ensure when a (i, 1) and a (i, 2) can not be 0 simultaneously.
With further reference to figure, whenTime, due in upper and in lower two electrically operated valves 5 be simultaneously in Closed mode, can cause the thermal-arrest liquid open circuit in heat collector, i.e. can not realize most basic heat collector entrance and flow into, exports stream The path gone out, belongs to invalid flow process, it is therefore desirable to rejected before path is optimized calculating.
B) the high-temperature level collector area matrix less than low-temperature level area, the heat collector surface of the flow process of i.e. every grade thermal-arrest liquid are rejected The collector area of long-pending≤rear stage, and the collector area of >=previous stage.
With further reference to figure, whenTime, the most all electrically operated valves 5 are open mode, and flow process is also Connection;WhenTime, for thtee-stage shiplock thermal-arrest;
WhenTime, form two-stage thermal-arrest, the most rudimentary is a flow process thermal-arrest, and two grades is two flow process collection Heat, two grades of collector areas, more than one-level collector area, meet the requirements;
And work asTime, it is similarly formed two-stage thermal-arrest, the most rudimentary is two flow process thermal-arrests, and two grades is one Flow process thermal-arrest, two grades of collector areas are less than one-level collector area, undesirable, should give rejecting.The reason rejected is: when low Time the temperature of level thermal-arrest is sufficiently high, the leaking heat >=solar radiation quantity of senior thermal-arrest, then the thermal-arrest temperature of heat collector can be caused Degree will not continue to raise, and the thermal-arrest of heat collector is not contributed by the collector area of the most senior thermal-arrest, it is therefore desirable to entering path Row is rejected before optimizing calculating.
Calculate the target function value that M1 after rejecting, to have physical significance matrix is corresponding, obtain stage optimal value. Using matrix A corresponding for this stage optimal value as the initial value of objective matrix B;That is: select there is M1 matrix of physical significance That matrix that the target function value of middle correspondence is optimum, as the initial value of objective matrix B;
Optimization step: according to the rule set, above-mentioned objective matrix B is optimized, meets stopping of setting in optimization process Only during condition, i.e. obtain the target function value under this collection heat pattern.Corresponding thermal-arrest liquid path is obtained according to target function value, It is the thermal-arrest liquid path after optimization.Control device and combine the open and-shut mode of current electrically operated valve 5, electronic to each Valve 5 sends instruction, and the path of thermal-arrest liquid is adjusted to the path of thermal-arrest liquid corresponding to this target function value.
As a kind of simple example may is that user at remote control end by the target operation mould of current heat collector Formula is set as that the index drawn by object function is the collection heat pattern corresponding to " maximum temperaturerise under given flow ", then control dress Put and each electrically operated valve 5 sent the individual control instruction corresponding as the matrix A of initial value of M1:
Such as above-mentioned M1=1, the path of the thermal-arrest liquid of the heat collector that the control instruction corresponding to matrix A is formed is " multistage Series connection ", as being open mode for (2,5) in five electrically operated valves in Fig. 1, remaining is closed mode, and this is initial value pair The stage optimal value answered, i.e. as the initial value of objective matrix B [n, 2].According to this stage optimal value, test, calculate also The import and export temperature difference of record heat collector.
The process being optimized above-mentioned stage optimal value can be, control device according to set rule (as empirical value, Random data exchange etc.) adjust the element value in matrix A, as being adjusted in the path for thermal-arrest liquid, " most end two-stage is string Connection ", as being closed mode for (1,5) (bottom right, upper left) in 5 electrically operated valves in Fig. 1, remaining is open mode, is formed Be string the two-stage flow process that combines, the first time that stage optimal value is i.e. carried out by this optimizes.According to this first time optimal value.Root According to this first time optimal value, test, calculate and record the temperature difference of the import and export of heat collector.
The path of two kinds of thermal-arrest liquid that contrast perfecting by stage value is corresponding with optimal value for the first time is at heat collector import and export The temperature difference, if the first (" plural serial stage ") imports and exports the temperature difference more than the second, then control device and resend instruction, with " plural serial stage ", as current thermal-arrest liquid flow, does not the most replace the value of objective matrix B [n, 2], and the rule according to setting is entered Traveling one-step optimization;If the first temperature difference is less than the second, then need to change flow process, by thermal-arrest corresponding for first time optimal value The path of liquid is as current thermal-arrest liquid flow, i.e. after the initial value of objective matrix B [n, 2] replaces with change flow process Value, the rule according to setting optimizes further;Until meeting the condition (such as iteration or exchange times) set, will be After the thermal-arrest liquid flow corresponding to optimal value once as the optimal value under this collection heat pattern, calculate under this optimal value state The import and export temperature difference of thermal-arrest liquid of heat collector be maximum temperaturerise (outlet temperature-inlet temperature), and obtain objective matrix The flow process of the thermal-arrest liquid that B [n, 2] is corresponding.
Certainly, in order to shorten optimized computing cost and improve optimum level, it is also possible to carry out according to the actual requirements Programming or introduce existing other for carrying out the ripe algorithm of optimization selection.As still with previous example, incite somebody to action current The target operational mode of heat collector be set as that the index drawn by object function is that " maximum temperaturerise under given flow " institute is right The pattern answered, inventor, according to actual demand, has carried out a kind of concrete programming to this optimization process, and logic diagram is specifically joined According to Fig. 5, the detailed process being optimized the path of thermal-arrest liquid by the algorithm of this programming can be:
501) calculate M1 target function value corresponding to each matrix, select the optimum as the stage of target function value optimum Value;Extract matrix A corresponding to this stage optimal value and be stored in objective matrix B [n, 2], as at the beginning of objective matrix B [n, 2] Initial value.
502) in M1 matrix, select matrix selection matrix A1 and A2 with the probability set and carry out calculated crosswise, again give birth to Become two new matrix A 1 ' and A2 '.The mode of calculated crosswise is as follows: 1. stochastic generation integer C between 1 and n;2. by matrix A 1 It is interchangeable with the numerical value of (i > C) in the element a1 [i, j] in A2 and a2 [i, j];3. there is no physics after rejecting matrix switch The matrix of meaning, replaces matrix B [n, the 2] cover not having physical significance simultaneously;Generate the matrix colony after intersecting.
Wherein, the most selected probability for calculated crosswise of certain matrix in matrix colony is corresponding with this matrix The value of calculation of object function is correlated with, it may be assumed that when the function that object function is the maximizing computing described in the present embodiment, then square Target function value corresponding to matrix in battle array colony is the biggest, and the most selected probability for intersecting is the biggest;Correspondingly, target is worked as When function is to minimize the function of computing, then the target function value that the matrix in matrix colony is corresponding is the least, the most selected use The least in the probability intersected.
503) the matrix colony after intersection obtained above carrying out variation to calculate, the mode that variation calculates is as follows: 1. 1 And stochastic generation integer D between n;2. with certain probability, determine whether the matrix individuality in above-mentioned matrix colony participates in variation Calculate.Herein, single matrix participates in the probability completely random of variation, unrelated with remaining condition any;If 3. some matrix A Take part in variation to calculate, then the numerical value that a [i, j] (i=D) is corresponding is carried out logic and overturn, it may be assumed that if 1, then become 0;If It is 0, is then entered as 1;4. there is no the matrix of physical significance after rejecting matrix variation;Still the matrix not having physical significance is used B [n, 2] cover replaces;Generate the matrix colony after variation.
504), after carrying out above-mentioned variation, intersection, the initial value of optimum for a desired value matrix with B [n, 2] is compared, If the target function value of correspondence is better than initial value, then substitutes initial value by stage optimal value, if initial value is more excellent, then continue Retain initial value, i.e. obtain stage optimal value, the matrix group body after variation is repeated aforementioned intersection and mutation operator, to rank Section optimal value optimizes further.
505) time until reaching other stop conditions of iterations or the setting set, at M1 the matrix obtained In, according to the target function value of its correspondence, the one group optimal value as objective matrix B [n, 2] optimum using target function value.
506) regulation controls the on off state of each electrically operated valve 5 so that the flow path of thermal-arrest liquid is according to target Path determined by the optimal value of matrix B [n, 2], for optimal path.
According to actual needs, entered the flow of thermal-arrest liquid of heat collector by regulation, each by control in heat collector The opening and closing of individual electrically operated valve 5 regulates the flow process of thermal-arrest liquid, combining environmental temperature, wind speed, solar radiation, heat collector size etc. Influence factor, for different application scenarios, can realize different going out liquid temp in the downstream going out liquid collector tube 3.As During summer, liquid temp to more than 100 DEG C will be gone out, then by driving absorption refrigeration or organic Rankine cycle power generation system real Now to the heat energy utilization freezing or generate electricity collected, improve the conversion ratio of heat energy collected by heat collector.
The heat collecting liquid body controlling means using the present invention realizes the step of circulation heating particularly as follows: after Kai Ji, control portion root Parameter (such as including the size of heat collector, the size of capillary endothermic tube 2, the size etc. of CPC4) and service data according to heat collector (such as ambient temperature, wind speed, solar radiation, thermal-arrest liquid out temperature, pressure drop and flow etc.), to the current mesh collecting heat pattern Scalar functions is optimized, and when object function optimal value when, the on off state of each electrically operated valve 5 of its correspondence is determined The flow process of thermal-arrest liquid be theoretic optimal flow process.Thermal-arrest liquid, after optimal flow process flows out heat collector, flows into and stores Heat exchanger 14 within boiler 13, the confession warm fluid within heat storage water tank 13.Between thermal-arrest liquid and confession warm fluid are passed through Wall type heat exchanger carrys out heat exchange, heat exchange but do not mix.The main points that the present invention comprises specifically include that
1) by with pulsating heat pipe heat extractor 2 as heat absorbing member, instead of heat pipe or conventional endothermic tube, processing is simple, cost Cheap, and as a kind of preferred, the external diameter≤4mm (preferably 1~4mm, more preferably 2~4mm) of pulsating heat pipe heat extractor 2, And by using CPC4 as beam condensing unit and preferred as one, the intercepting of CPC4 is 0~4/5 than scope, it is possible to use 3D The processing technique molding such as printing, effectively increase the endothermic heat flow density of pulsating heat pipe heat extractor 2, decrease area of dissipation, can So that the size of CPC4 (height is less than or equal to 50mm) is suitable with conventional panel heat collector and vacuum tube collector, and there is routine Heat collector 2~the focusing ratio of 5 times even as high as 10 times.And according to practical situation and demand, can be with pulsating heat pipe heat extractor 2 Single evaporator section as a basic heat absorbing units, it is also possible to utilize two grades of liquor separators by pulsating heat pipe heat extractor more than 2 Individual evaporator section is in parallel, as a basic heat absorbing units;And whole heat collector is connected by metal tubes, therefore have one Fixed bearing capacity, has frost-cracking-preventing ability simultaneously in the winter time.
2) thermal-arrest liquid (can be aforesaid liquid or gaseous medium) is adjusted by the on off state of electrically operated valve 5 Flow path, and the on off state of electrically operated valve 5 can be by control portion according to design temperature, ambient temperature, wind speed, the sun The parameters such as radiant intensity, thermal-arrest fluid flow and/or turnover flow pressure drop determine so that the current complete machine under collection thermal environment Collecting efficiency farthest catered to the demand of application scenario.According to different needs, by adjusting opening of electrically operated valve 5 Off status regulates the flow process of the thermal-arrest liquid entering heat collector, it is also possible to be adjusted into by the aperture of flow control valve 9 The flow of the thermal-arrest liquid of heat collector such that it is able to realize user's demand for different heating temperatures to the full extent.
Being explained embodiments of the invention above in association with accompanying drawing, accompanying drawing herein is used to provide this Being further appreciated by of invention.Obviously, the foregoing is only the present invention preferably detailed description of the invention, but protection scope of the present invention Be not limited thereto, any be to one skilled in the art can readily occur in, essentially without depart from the present invention Change or replacement, within being also all contained in protection scope of the present invention.

Claims (10)

1. a circulation heating apparatus, it is characterised in that this heating installation includes:
Heating circulation, it includes hot water storage tank, heating end and water circulating pump;And
Solar thermal collector, it includes housing and the thermal-arrest portion being placed in described housing;
Wherein, described thermal-arrest portion includes feed liquor separating tube, goes out liquid collector tube and be placed in pulsating heat pipe thermal-arrest list therebetween Unit, described pulsating heat pipe heat collection unit includes compound parabolic concentrator, pulsating heat pipe heat extractor and double-tube heat exchanger, described pulsation Heat pipe receiver is spaced by some groups of evaporator sections and condensation segment and is formed, and evaporator section is placed in described compound parabolic concentrator across column; The two ends of the sheath body of described double-tube heat exchanger respectively with feed liquor separating tube and go out liquid collector tube and connect, described condensation segment is placed in sheath body In;
Working medium in described evaporator section absorb by described compound parabolic concentrator reflect can radiate energy very much after, heat is transmitted Carrying out heat exchange to described condensation segment and with the thermal-arrest liquid in described double-tube heat exchanger, described thermal-arrest liquid is at described feed liquor separatory Pipe, described in go out between liquid collector tube and at least some of described double-tube heat exchanger formation flow path, and there is physical significance On the premise of, it is possible to the number of the described double-tube heat exchanger of described flow path is accessed by adjustable mode;
Heat exchanger in described hot water storage tank makes described flow path form closed loop.
Circulation heating apparatus the most according to claim 1, it is characterised in that described feed liquor separating tube and described go out liquid liquid collecting Several electrically operated valves are distributed on pipe, by adjusting the on off state of each described electrically operated valve, are in the electronic of open state Valve enable to thermal-arrest liquid described feed liquor separating tube, described in go out between liquid collector tube and described double-tube heat exchanger formed can Adjust, the flow path of multistage pulsating heat pipe heat extractor heat absorption;
Wherein, the direction that the heat absorption progression that the direction swimming over to downstream on feed liquor separating tube is pulsating heat pipe heat extractor is incremented by, then The pulsating heat pipe of the endotherm area of the pulsating heat pipe heat extractor of the high-temperature level that progression is higher >=the be in relatively low low-temperature level of progression is inhaled The endotherm area of hot device.
Circulation heating apparatus the most according to claim 2, it is characterised in that also include control portion, itself and each electrodynamic valve Door is electrical connection, for adjusting the on off state of each described electrically operated valve;
And for adjust the flow path that the on off state of each described electrically operated valve is formed through described control portion, in pulsation On the direction that the heat absorption progression of heat pipe receiver is incremented by, when total heat absorption progression of pulsating heat pipe heat extractor is odd number, it is located at institute The electrically operated valve stating the most downstream on feed liquor separating tube should be closed, be located at described in go out the electrodynamic valve of most downstream on liquid collector tube Door should be opened;When the heat absorption progression of pulsating heat pipe heat extractor is even number, otherwise.
Circulation heating apparatus the most according to claim 3, it is characterised in that be additionally provided with regulation stream on described feed liquor separating tube Control valve, the aperture adjusting described regulation flow control valve by described control portion, adjust thermal-arrest liquid in described flowing Flow in path.
Circulation heating apparatus the most according to claim 3, it is characterised in that also include sensor group, comprising:
First sensor group, it is located at the upstream of described feed liquor separating tube, joins in the feature of import department for detecting thermal-arrest liquid Number;
Second sensor group, its be located at described in go out the downstream of liquid collector tube, for detecting the thermal-arrest liquid feature ginseng in exit Number;
3rd sensor group, it is located in the environment residing for described solar thermal collector, is used for detecting ambient parameter;And
Heating temperature sensor, it is located on supply channel, for detecting the temperature for warm fluid;
Above-mentioned (first, second, third) sensor group and described heating temperature sensor electrically connect with described control portion respectively, For providing the basic parameter of the on off state for adjusting each described electrically operated valve to described control portion.
6. according to the circulation heating apparatus according to any one of Claims 1 to 5, it is characterised in that inhale with described pulsating heat pipe The axial direction of hot device is length direction, and described compound parabolic concentrator and described pulsating heat pipe heat extractor are at this length direction Size adapts, and the intercepting ratio of described compound parabolic concentrator is in the range of 0~4/5.
7. according to the circulation heating apparatus according to any one of Claims 1 to 5, it is characterised in that described pulsating heat pipe absorbs heat Device is placed on the focal circle of described compound parabolic concentrator along its length, and the caliber≤4mm of described pulsating heat pipe heat extractor.
8. according to the circulation heating apparatus according to any one of Claims 1 to 5, it is characterised in that by described two-way and more than Described double-tube heat exchanger parallel connection form double-tube heat exchanger pipe group, the both sides of described double-tube heat exchanger pipe group are respectively by two fraction Liquid device and described feed liquor separating tube and described go out liquid collector tube connect.
9. the flow control method of a thermal-arrest liquid, it is characterised in that this flow control method includes:
Control portion gathers parameter and the service data of solar thermal collector, also gathers the supply water temperature for warm fluid;
Control portion is based on described parameter, described service data and described leaving air temp, to right under selected current heating mode The object function of the solar thermal collector answered is optimized;
Control portion obtains the feed liquor separating tube being located at solar thermal collector corresponding when object function is optimal value and goes out liquid liquid collecting The target switch state of each electrically operated valve on pipe;
Wherein, described optimal value is to pump merit minimum under fixed temperature and flow;
The on off state of electrically operated valve is adjusted to target switch state by control portion so that the thermal-arrest liquid of solar thermal collector exists Feed liquor separating tube, go out between liquid collector tube, double-tube heat exchanger and hot water storage tank, to form adjustable flow path.
Flow control method the most according to claim 9, it is characterised in that this flow control method also includes:
Control portion shows described leaving air temp and the information drawn according to parameter and service data, including:
Liquid in-out temperature, flow and the pressure reduction of thermal-arrest liquid;Current ambient parameter;And each described electrically operated valve is current On off state;
The parameter of storage heating circulation and service data, recall for follow-up.
CN201610791137.2A 2016-08-31 2016-08-31 The flow control method of circulation heating apparatus and thermal-arrest liquid Active CN106322482B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610791137.2A CN106322482B (en) 2016-08-31 2016-08-31 The flow control method of circulation heating apparatus and thermal-arrest liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610791137.2A CN106322482B (en) 2016-08-31 2016-08-31 The flow control method of circulation heating apparatus and thermal-arrest liquid

Publications (2)

Publication Number Publication Date
CN106322482A true CN106322482A (en) 2017-01-11
CN106322482B CN106322482B (en) 2019-06-18

Family

ID=57789444

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610791137.2A Active CN106322482B (en) 2016-08-31 2016-08-31 The flow control method of circulation heating apparatus and thermal-arrest liquid

Country Status (1)

Country Link
CN (1) CN106322482B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110424207A (en) * 2019-08-13 2019-11-08 吉林大学 A kind of road heat collection underground energy-accumulation double temperature differential grade flow control system and control method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2295870A2 (en) * 2009-08-21 2011-03-16 Vaillant GmbH Device for combining a ceiling heating centre with a solar assembly
CN203100223U (en) * 2012-12-14 2013-07-31 华北电力大学 Solar combined heat and power generation system based on pulsating heat pipe
CN203375751U (en) * 2013-08-07 2014-01-01 宜昌三峡太阳能研究所有限公司 Device allowing solar energy centralized heating engineering scale to be adjusted
JP2015194314A (en) * 2014-03-31 2015-11-05 東京瓦斯株式会社 Solar heat utilization gas hot water system
CN105674593A (en) * 2016-03-16 2016-06-15 高诗白 Solar constant-temperature instant hot water system based on slab-shaped flat pipe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2295870A2 (en) * 2009-08-21 2011-03-16 Vaillant GmbH Device for combining a ceiling heating centre with a solar assembly
CN203100223U (en) * 2012-12-14 2013-07-31 华北电力大学 Solar combined heat and power generation system based on pulsating heat pipe
CN203375751U (en) * 2013-08-07 2014-01-01 宜昌三峡太阳能研究所有限公司 Device allowing solar energy centralized heating engineering scale to be adjusted
JP2015194314A (en) * 2014-03-31 2015-11-05 東京瓦斯株式会社 Solar heat utilization gas hot water system
CN105674593A (en) * 2016-03-16 2016-06-15 高诗白 Solar constant-temperature instant hot water system based on slab-shaped flat pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110424207A (en) * 2019-08-13 2019-11-08 吉林大学 A kind of road heat collection underground energy-accumulation double temperature differential grade flow control system and control method
CN110424207B (en) * 2019-08-13 2020-06-12 吉林大学 Road heat collection underground energy storage double-temperature-difference step flow control system and control method

Also Published As

Publication number Publication date
CN106322482B (en) 2019-06-18

Similar Documents

Publication Publication Date Title
CN110657411B (en) Heat pipe type solar heat collector with variable pipe diameter in flow direction
CN201926029U (en) Solar hot water circulation control system capable of automatically regulating heat distribution
CN106247669A (en) Absorption type refrigerating unit and the flow control method of thermal-arrest liquid
WO2013067908A1 (en) Solar thermal collector apparatus
CN104214824B (en) A kind of solar energy intelligent control system
CN106277132A (en) Sea water desalinating unit and the flow control method of thermal-arrest liquid
CN106382665B (en) The flow control method of circulation heating apparatus and thermal-arrest liquid
CN106322482A (en) Cyclic heating device and flow control method for heat collection liquid
Yaghoubi et al. Simulation of Shiraz solar power plant for optimal assessment
CN106321381A (en) Organic Rankine cycle power-generation device and flow control method for heat collecting liquid
CN106277131A (en) Sea water desalinating unit and the flow control method of thermal-arrest liquid
CN106403572B (en) The flow control method of drier and thermal-arrest liquid
Yang et al. Numerical simulation of the performance of a solar-assisted heat pump heating system
CN106440517B (en) The flow control method of direct-expansion type heat pump assembly and thermal-arrest liquid
CN106322834B (en) The flow control method of direct-expansion type heat pump assembly and thermal-arrest liquid
CN106322977A (en) Dryer and flow path control method for heat collecting liquid
CN106403322B (en) The flow control method of concentrating solar collector and its thermal-arrest liquid
CN106337788B (en) The flow control method of Organic Rankine Cycle power generator and thermal-arrest liquid
CN206469326U (en) A kind of concentrating solar integrated thermal utilization system
CN106369838B (en) A kind of slot light collection solar thermal collection system design method
CN106403369B (en) The flow control method of absorption type refrigerating unit and thermal-arrest liquid
CN106322783B (en) The flow control method of concentrating solar collector and its thermal-arrest liquid
CN202927806U (en) Solar energy rapid heating device
KR101477995B1 (en) Radiant floor heating and cooling, and ventilation system
CN109506375B (en) Slot type solar heat collector

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant