CN103115389A - Solar energy combined type phase-change heat storage heating system - Google Patents
Solar energy combined type phase-change heat storage heating system Download PDFInfo
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- CN103115389A CN103115389A CN2012105759353A CN201210575935A CN103115389A CN 103115389 A CN103115389 A CN 103115389A CN 2012105759353 A CN2012105759353 A CN 2012105759353A CN 201210575935 A CN201210575935 A CN 201210575935A CN 103115389 A CN103115389 A CN 103115389A
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Abstract
The invention discloses a solar energy combined type phase-change heat storage heating system which mainly comprises a solar energy collector (1), an auxiliary heat source (2), a solar energy circulating pump (4), a phase-change heat storage box (5) and a heating circulating pump (8), wherein the solar energy collector (1), the auxiliary heat source (2), the solar energy circulating pump (4), the phase-change heat storage box (5) and the heating circulating pump (8) are communicated through water pipes and adjusted by valves. The solar energy collector is connected with the auxiliary heat source in series or in parallel. The phase-change heat storage box adopts phase-change materials at from 0 DEG C to 100 DEG C as needed. When the solar energy collector reaches heating temperature, the solar energy combined type phase-change heat storage heating system directly supplies heat. When heat quantity is surplus, the heat is capable of being firstly stored in the phase-change heat storage box. When solar radiation is not enough, the heat quantity transfers heat with heating backwater. By using a plurality of compound modes of pipelines and the valves of the solar energy collector and heat storage characteristics of big heat storage capacity and stable temperature of phase-change heat storage material, the solar energy combined type phase-change heat storage heating system has the advantages of being capable of overcoming the defect of the unstable solar radiation, shortening time of starting the auxiliary heat source, reducing investment due to the fact that a plate type heat exchanger is not arranged, and reducing outlet water temperature of the solar energy collector, energy-saving and environment-friendly.
Description
Technical field
The present invention relates to the solar heating technology, especially a kind of solar energy combined type phase-transition heat-storage heating system.
Background technology
Solar energy gets more and more people's extensive concerning as a kind of reproducible clean energy resource, and along with the lasting deterioration of environment, low-carbon (LC), green human settlement have become the long-range objectives of Global Sustainable Development.According to human settlement's needs, building heating is the high energy consumption industry that a lot of cold districts must be faced.It is soaring year by year that a large amount of energy consumption demands is used the energy, and by initial coal heat in recent years combustion gas, heat pump heating, none is not to complete under the prerequisite that is consuming a large amount of basic energy resources.Therefore, seek a kind of new heating system, centered by energy savings, protection of the environment, substitute traditional energy with the clean type regenerative resource, become the new trend of modern architecture heating.Solar energy is as the abundantest, the most potential energy resources in the world---solar energy utilize technology, enjoy countries in the world to pay close attention to always.
At present, heliotechnics has obtained significant progress all over the world, but due to unstability and the intermittence of solar energy, having after-heat when solar radiation is stronger can't be used effectively, and solar radiation can not provide again enough energy for building when weak.And existing most of solar heat-preservation heating technology can not be used solar thermal collector direct heating, cause solar radiation in the morning weak, want a direct-open auxiliary thermal source when phase-transition heat-storage case can't heat, the sun can not be fully used.And at the weak weather of solar radiation, solar thermal collector outlet and phase-transition heat-storage case exothermic temperature may be always lower than heating temperatures, can only use the auxiliary thermal source heat supply this moment, and solar energy resources is not used fully, and therefore, these technology also are unfavorable for energy savings.
Native system and CN 101812590 A that announce before " method of solar energy heating system and heating thereof and hot water supply " structural similarity, when not having rich heat to accumulate but the characteristics of native system are to utilize solar thermal collector to make hot water reach heating temperature directly terminad utilize the phase change heat storage material accumulation of heat for warm, thereby the minimizing auxiliary thermal source opening time of maximum possible, reduce the volume of heat storage box, thereby farthest utilize solar heating, better realize the utilization of regenerative resource.Heat exchanger used in CN 101812590 A " solar energy heating system and heating thereof and hot water Supply Method " is many, cause the heat supply temperature of solar thermal collector higher, and the efficient of solar thermal collector descends along with the rising of solar thermal collector outlet heat supply temperature, native system has saved plate type heat exchanger, the outlet temperature of solar thermal collector is reduced, so the efficient of the solar thermal collector of native system can be relatively high.
Summary of the invention
For the prior art above shortcomings, the object of the present invention is to provide a kind of with solar energy as main thermal source, but solar thermal collector direct heating, the heating system that also can combine with accumulation of energy and auxiliary thermal source is applicable to the solar energy combined type phase-transition heat-storage heating system of multiple different buildings.
for this reason, the present invention has taked following technical scheme: 1, solar energy combined type phase-transition heat-storage heating system, comprise mainly by solar thermal collector (1), heating end (9) forms solar thermal collector direct heating not accumulation of heat circulation heating loop I, comprise mainly by solar thermal collector (1), phase-transition heat-storage case (5), the solar thermal collector direct heating that heating end (9) forms adds accumulation of heat circulation heating loop II, comprise mainly by solar thermal collector (1), phase-transition heat-storage case (5), the solar energy that heating end (9) forms and phase-transition heat-storage case series connection heating circulation heating loop III, comprise mainly by phase-transition heat-storage case (5), heating end (9) forms phase-transition heat-storage case heating circulation heating loop IV, comprise mainly by auxiliary thermal source (2), heating end (9) forms auxiliary thermal source heating circulation heating loop V, it is characterized in that:
A, described solar thermal collector direct heating not accumulation of heat circulation heating loop I comprises solar thermal collector (1), solar energy circulating pump (4), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
B, described solar thermal collector direct heating add accumulation of heat circulation heating loop II and comprise solar thermal collector (1), solar energy circulating pump (4), phase-transition heat-storage case (5), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
C, described solar energy and phase-transition heat-storage case series connection heating circulation heating loop III comprise solar thermal collector (1), phase-transition heat-storage case (5), solar energy circulating pump (4), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
D, described phase-transition heat-storage case heating circulation heating loop IV comprises phase-transition heat-storage case (5), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
E, described auxiliary thermal source heating circulation heating loop V comprises auxiliary thermal source (2), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
F, described solar thermal collector direct heating not accumulation of heat circulation heating loop I, solar thermal collector direct heating add accumulation of heat circulation heating loop II, solar energy and phase-transition heat-storage case series connection heating circulation heating loop III, phase-transition heat-storage case heating circulation heating loop IV, auxiliary thermal source heating circulation heating loop V alternate run.Conversion between each heating circulation heating loop is by the valve regulated on pipeline; Pump in system, valve automatically controlled device, temperature sensor and auxiliary thermal source control are electrically connected to controller (10) respectively;
2, solar energy combined type phase-transition heat-storage heating system comprises mainly by solar thermal collector (1), heating end (9) forms solar thermal collector direct heating not accumulation of heat circulation heating loop I comprises mainly by solar thermal collector (1), phase-transition heat-storage case (5), the solar thermal collector direct heating that heating end (9) forms adds accumulation of heat circulation heating loop II, comprises mainly by solar thermal collector (1), phase-transition heat-storage case (5), the solar energy that heating end (9) forms and phase-transition heat-storage case series connection heating circulation heating loop III comprise mainly by phase-transition heat-storage case (5), heating end (9) forms phase-transition heat-storage case heating circulation heating loop IV comprises mainly by auxiliary thermal source (2), heating end (9) forms auxiliary thermal source heating circulation heating loop V comprises mainly by solar thermal collector (1), solar energy circulating pump (4), phase-transition heat-storage case (5), auxiliary thermal source (2), the solar energy that heating end (9) forms and auxiliary thermal source series connection heating circulation heating loop VI, it is characterized in that:
A, described solar thermal collector direct heating not accumulation of heat circulation heating loop I comprises solar thermal collector (1), solar energy circulating pump (4), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
B, described solar thermal collector direct heating add accumulation of heat circulation heating loop II and comprise solar thermal collector (1), solar energy circulating pump (4), phase-transition heat-storage case (5), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
C, described solar energy and phase-transition heat-storage case series connection heating circulation heating loop III comprise solar thermal collector (1), phase-transition heat-storage case (5), solar energy circulating pump (4), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
D, described phase-transition heat-storage case heating circulation heating loop IV comprises phase-transition heat-storage case (5), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
E, described auxiliary thermal source heating circulation heating loop V comprises auxiliary thermal source (2), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
F, described solar energy and auxiliary thermal source series connection heating circulation heating loop VI comprise solar thermal collector (1), solar energy circulating pump (4), phase-transition heat-storage case (5), auxiliary thermal source (2) heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
G, described solar thermal collector direct heating not accumulation of heat circulation heating loop I, solar thermal collector direct heating add accumulation of heat circulation heating loop II, solar energy and phase-transition heat-storage case series connection heating circulation heating loop III, phase-transition heat-storage case heating circulation heating loop IV, auxiliary thermal source heating circulation heating loop V, solar energy and auxiliary thermal source series connection heating circulation heating loop VI alternate run.Conversion between each heating circulation heating loop is by the valve regulated on pipeline; Pump in system, valve automatically controlled device, temperature sensor and auxiliary thermal source control are electrically connected to controller (10) respectively;
3, solar energy combined type phase-transition heat-storage heating system according to claim 2, solar thermal collector and auxiliary thermal source can be taked the form of connecting, can can not heat but some heat can the used time at the sun, first heating water return is heated to certain temperature, then is heated by auxiliary thermal source.Can reduce the energy consumption of auxiliary thermal source;
4, according to claim 12 described solar energy combined type phase-transition heat-storage heating systems,, it is characterized in that described auxiliary thermal source can be water resource heat pump, earth source heat pump, boiler or other forms of auxiliary thermal source, can take form in parallel with solar thermal collector;
5, according to claim 12 described solar energy combined type phase-transition heat-storage heating systems,, it is characterized in that: the heat-storing material in described phase-transition heat-storage case (5) can be the organic matters such as paraffin, aliphatic acid, can be also the inorganic matters such as water and salt, also comprise above-mentioned encapsulation phase change heat storage material afterwards, its phase transition temperature is at 0 ~ 100 ℃;
6, according to claim 1,2 described solar energy combined type phase-transition heat-storage heating systems, it is characterized in that: described heating output closed circuit, the heating Terminal device can be flooring radiation heating, radiator heating, can be also the forms such as fan coil.
7, according to claim 1,2 described solar energy combined type phase-transition heat-storage heating systems, it is characterized in that: should add ethylene glycol or other antifreezing agents in described heating water, in order to avoid solar thermal collector freezes.
Compared to existing technology, the present invention has following beneficial effect:
(1) the present invention utilizes heat-storing material to collect solar energy, utilize the special heat absorption and release function of phase change heat storage material, after-heat is stored in the phase-transition heat-storage case when solar radiation is stronger, utilize the heat in the phase-transition heat-storage case to heat for building when solar radiation is weak, avoid the waste of solar energy resources, better utilized solar energy to be building heating;
(2) the present invention adopts phase change heat storage material to carry out accumulation of heat, the phase-change material heat density is large, the storage heater compact conformation, volume is little, the thermal efficiency is high, the heat absorption exothermic temperature is constant, easily with the operational system coupling, be easy to control, for the user saves space and more convenient user use;
(3) the present invention adopts the various ways such as connection in series-parallel of solar energy and auxiliary thermal source, can utilize solar thermal collector direct heating, the auxiliary thermal source form such as connect with solar energy system to reduce the auxiliary thermal source opening time, improve the efficient of auxiliary thermal source, better utilize the energy, reduce operating cost;
(4) the present invention without plate type heat exchanger, just adds antifreezing agent in heating water, and reduce investment, and can reduce the leaving water temperature of solar thermal collector, thus the efficient of raising solar thermal collector.
(5) the present invention is applicable to general residential architecture and public building, and the scope of application is wide.
Description of drawings
Accompanying drawing 1 solar thermal collector direct heating, solar energy and auxiliary thermal source parallel compound system
Accompanying drawing 2 solar thermal collector direct heatings, solar energy and auxiliary thermal source series-parallel combined-type system.
The specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Solar energy combined type phase-transition heat-storage heating system mainly comprises solar thermal collector (1), auxiliary thermal source (2), heat collection water tank (3), solar energy circulating pump (4), phase-transition heat-storage case (5), heating feed pipe (6), heating return pipe (7), heating circulating pump (8), heating end (9), controller (10).Water pipe UNICOM between them, and mounted valve is regulated.
The present invention is combined solar energy heating system with phase-transition heat-storage, utilize the special heat absorption and release function of phase change heat storage material, and the keying of controlling each valve and system realizes the purpose that heats.System running pattern is based on temperature and carries out conversion and control, and whole process is controlled the opening and closing of each system by controller by temperature.
Suppose that the heating supply and return water temperature that adopts in the following examples is 50/40
oC。Domestic hot-water's supply water temperature is 50
oC。
Embodiment 1:Solar energy combined type phase-transition heat-storage heating system: solar thermal collector direct heating, solar energy and auxiliary thermal source parallel compound system.System consists of in detail and connected mode is seen accompanying drawing 1.
This system can realize solar thermal collector direct heating, causes the auxiliary thermal source opening time long owing to will the phase-transition heat-storage case being heated to the heating temperature that needs when having avoided firm unlatching solar energy system; Can when solar radiation is stronger, heat be stored, utilize the heat heating that stores in the phase-transition heat-storage case in the time of a little less than solar radiation.This system does not need plate type heat exchanger, and the solar thermal collector outlet temperature reaches the heating supply water temperature and can heat, and the auxiliary thermal source opening time is compared still less, but this system need to all add antifreezing agent in the recirculated water of whole system.
In this system, solar energy collector system carries out heat exchange by plate type heat exchanger and heating water and heats, and forms parallel system with the phase-transition heat-storage case, when solar radiation is stronger, unnecessary heat is stored; Form parallel system with auxiliary thermal source, auxiliary thermal source system heating when solar thermal collector and phase-transition heat-storage case all can not heat.
Solar energy system is owing to being open system, and is high to the bearing capacity requirement of solar thermal collector, wants the bearing capacity of additional consideration solar thermal collector when the solar thermal collector type selecting.Solar energy collector system will be concrete according to the locality the factors such as weather conditions, construction area, heating load determine, this system does not have concrete requirement to solar energy collector system, can be according to existing technical foundation type selecting.Want the impact of the antifreezing agent heat exchanging of adding in additional consideration recirculated water when storage heater and auxiliary thermal source type selecting.In the phase-transition heat-storage case, phase change heat storage material for existing matured product, can be inorganic water and salt PCM, or paraffin class, or fatty acid material etc.Middle regenerator temperature, heat-storing material and the volume of phase-transition heat-storage case will be determined for backwater, solar thermal collector type and the factors such as area and economical rationality according to solar radiation, the heating of locality.The type selecting of auxiliary thermal source system wants comprehensive solar energy collector system, phase-transition heat-storage case and heating system to consider.
The present invention can be used for general residential architecture and public building, and the scope of application is wide, also can transform on the original basis the building of existing heating system, and implement than being easier to.
Solar energy combined type phase-transition heat-storage heating system of the present invention: the running of solar thermal collector direct heating, solar energy and auxiliary thermal source parallel compound system is as follows:
The method of operation 1:Solar energy system is opened, in solar thermal collector hot water with by plate type heat exchanger direct heating; Hold over system and auxiliary thermal source system closing.System's heating is independently born by solar energy system.
The method of operation 2:Solar energy system is opened, and in solar thermal collector, a hot water part is by plate type heat exchanger direct heating, and part heat supply in the phase-transition heat-storage case is stored in the phase-transition heat-storage case unnecessary heat; The auxiliary thermal source system closing.System's heating is independently born by solar energy system.
The method of operation 3:Solar energy system is opened, solar thermal collector direct heating system and auxiliary thermal source system closing, and hold over system is opened, and utilizes the heat heating of accumulating in the phase-transition heat-storage case, and system's heating is independently born by solar energy system.
The method of operation 4:Solar energy system and auxiliary thermal source system closing, hold over system is opened, and utilizes the heat heating of accumulating in the phase-transition heat-storage case, and system's heating is still independently born by solar energy.
The method of operation 5:Solar energy collector system and hold over system are closed, and the auxiliary thermal source system opens.System heating is independently born by the auxiliary thermal source system.
From the characteristics of the different methods of operation, can obtain the method for operation of different weather.
| ? | The method of |
The method of |
The method of operation 3 | The method of operation 4 | The method of operation 5 |
| Fine day | √ | √ | √ | √ | As required |
| Cloudy | √ | √ | √ | √ | √ |
| Overcast and rainy | As required | ? | ? | ? | √ |
Solar energy combined type phase-transition heat-storage heating system of the present invention: solar thermal collector direct heating, solar energy and auxiliary thermal source parallel compound system in the control mode of different weather are:
Fine day: when solar radiation can be satisfied the heating load of all day substantially, do not need the method for operation 5, open solar energy system since morning, successively the method for operation 1,2,3,4; If solar radiation can not be satisfied the heating load of all day, open solar energy system since morning, successively the method for operation 1,2,3,4,5.
Cloudy:Solar radiation this moment generally can not be satisfied the heating load of all day, opens solar energy system since morning, successively the method for operation 1,2,3,4,5.
Overcast and rainy:Overcast and rainy solar radiation quantity seldom, mode 2,3,4 can not be moved substantially.May can the method for operation 1 when cloudy solar radiation is strong, but main or the method for operation 5, can only the method for operation 5 in the rainy day.
Work and the control procedure of embodiment 1 are:
When 1, heating, pay the utmost attention to use solar energy, the solar energy circulating system start and stop adopt temperature to control.When solar thermal collector (1) exports water temperature less than 50
oDuring C, temperature sensor A is to controller (10) input temp signal, controller (10) sends control command, close triple valve 12,13,14, valve-off 11,19,20 and solar energy circulating system, solar thermal collector (1) is in vexed solarization state, opens triple valve 15,16 and heating circulating pump (8), by controlling triple valve 15,16, make solar thermal collector (1) outlet water temperature reach 50
oBefore C, auxiliary thermal source (2) independent operating, system's heating is independently born by auxiliary thermal source.
2, when solar thermal collector (1) outlet water temperature greater than 50
oDuring C, temperature sensor A is to controller (10) input temp signal, controller (10) sends control command, solar energy circulating system is opened, the auxiliary thermal source system closing, valve 11,19,20 is closed, and opens triple valve 12,13,14,15,16 and heating circulating pump (8), transfers the solar energy system independent operating to.Reach 55 in solar thermal collector (1) outlet water temperature
oBefore C, temperature sensor A is to controller (10) input temp signal, and controller (10) sends control command, by controlling triple valve 12,13,14,15,16, make heating by solar thermal collector (1) direct heating, not to phase-transition heat-storage case (5) and the middle accumulation of heat of heat collection water tank (3); When solar thermal collector (1) exports water temperature greater than 55
oAfter C, by controlling triple valve 12,13,14,15,16, make solar energy circulating system direct heating on the one hand, on the one hand to the middle accumulation of heat of phase-transition heat-storage case (5).System's heating this moment is by solar thermal collector (1) direct heating, and system's heating is independently born by solar energy circulating system.
3, heating exports water temperature greater than 50 in phase-transition heat-storage case (5)
oC does not reach 55
oDuring C, temperature sensor B sends signal, opens triple valve 12,13,14,15,16 and valve 19,20, by controlling triple valve 13,14,15,16, stops solar thermal collector (1) direct heating, and an accumulation of heat transfers phase-transition heat-storage case (5) heating to.This moment, solar energy circulating system and phase-transition heat-storage heating system moved simultaneously, and system heats by phase-transition heat-storage heating system and solar energy system shared.
4, heating exports water temperature greater than 55 in phase-transition heat-storage case (5)
oDuring C, temperature passes sensor B and sends signal, Open valve 11, by controlling triple valve 12, solar thermal collector (1) is stopped to phase-transition heat-storage case (5) heat supply, heat is all supplied with heat collection water tank (3), prevent that heating system is overheated, this moment, system's heating was independently born by the phase-transition heat-storage case; Heating outlet water temperature is less than 45 in phase-transition heat-storage case (5)
oDuring C, temperature passes sensor B and sends signal, and solar thermal collector (1) is stopped to heat collection water tank (3) heat supply, and heat is all supplied with phase-transition heat-storage case (5).The heat of accumulating in heat collection water tank (3) can prevent when night, solar energy circulating system was closed that in solar thermal collector (1), water freezes.
Embodiment 2:Solar energy combined type phase-transition heat-storage heating system: solar thermal collector direct heating, solar energy and auxiliary thermal source series-parallel combined-type system.System consists of in detail and connected mode is seen accompanying drawing 2.Compare this advantage of system is can not solar radiation to be stored in the phase-transition heat-storage case during direct heating when cloudy solar energy system with the system of embodiment 1 always, solar energy system and auxiliary thermal source form train, heat in the phase-transition heat-storage case first is heated to uniform temperature to heating water return, and then be heated supply water temperature by auxiliary thermal source, can reduce the energy resource consumption of auxiliary thermal source, more utilize solar energy.
In solar energy combined type phase-transition heat-storage heating system, the type selecting of various piece is identical with the solar energy combined type phase-transition heat-storage heating system of embodiment 1, and is both just slightly different on type of attachment.Many a kind of methods of operation 6 on the method for operation.
The method of operation 6:When the solar thermal collector outlet temperature does not reach the temperature that can heat always but certain temperature rise is arranged, open hold over system and auxiliary thermal source system this moment, both series connection heats for system.
The method of operation of fine day, broken sky and rainy day is identical with the solar energy combined type phase-transition heat-storage heating system of embodiment 1.
Cloudy day:Solar energy system is opened the method for operation 6,5 successively in the morning.
Work and the control procedure of embodiment 4 are:
When 1, heating, pay the utmost attention to use solar energy, the start and stop of solar energy circulating system adopt temperature to control.When solar thermal collector (1) exports water temperature less than 50
oDuring C, temperature sensor A is to controller (10) input temp signal, controller (10) sends control command, close triple valve 12,13,14,17, valve-off 11,19 and solar energy circulating system, solar thermal collector (1) is in vexed solarization state, opens triple valve 15,16,18 and heating circulating pump (8), by controlling triple valve 15,16,18, make solar thermal collector (1) outlet water temperature not reach 50
oBefore C, auxiliary thermal source (2) independent operating, system's heating is independently born by auxiliary thermal source.
2, at the cloudy day, the auxiliary thermal source independent operating, after the maximum hours run of setting, solar thermal collector (1) outlet water temperature is still less than 50 when the vexed solarization of solar thermal collector (1)
oC, this moment, temperature sensor A was to controller (10) input temp signal, controller (10) sends control command, triple valve 12,13,14,15,16,17,18 is opened, Open valve 19, this moment solar energy circulating system and auxiliary thermal source cooperation, by controlling triple valve 12,13,14, make solar energy circulating system only to phase-transition heat-storage case (5) accumulation of heat, do not heat.Not direct heating after control triple valve 15,16,17,18 makes phase-transition heat-storage case (5) with the heating of heating backwater, but it is fed in auxiliary thermal source (2), be heated 50 in auxiliary thermal source (2)
oHeating again after C.System's heating this moment is by auxiliary thermal source and solar energy circulating system shared, and both series connection heats.
3, when solar thermal collector (1) outlet water temperature greater than 50
oDuring C, temperature sensor A is to controller (10) input temp signal, controller (10) sends control command, solar energy circulating system is opened, the auxiliary thermal source system closing, open triple valve 12,13,14,15,16 and heating circulating pump (8) and solar energy circulating pump (4), transfer the solar energy system independent operating to.Do not reach 55 in solar thermal collector (1) outlet water temperature
oBefore C, temperature sensor A is to controller (10) input temp signal, and controller (10) sends control command, by controlling triple valve 12,13,14, makes heating by solar thermal collector (1) direct heating, not to the middle accumulation of heat of phase-transition heat-storage case (5); When solar thermal collector (1) exports water temperature greater than 55
oAfter C, by controlling triple valve 12,13,14, make solar energy circulating system direct heating on the one hand, on the one hand to the middle accumulation of heat of phase-transition heat-storage case (5).System's heating this moment is by solar thermal collector direct heating, and system's heating is independently born by solar energy circulating system.
4, heating exports water temperature greater than 50 in phase-transition heat-storage case (5)
oC does not reach 55
oDuring C, temperature sensor B sends signal, opens triple valve 12,13,14,15,16,17 and valve 19, by controlling triple valve 12,13,14, stops solar thermal collector direct heating, transfers phase-transition heat-storage case (5) heating to.By controlling triple valve 15,16,17, make directly heating backwater of phase-transition heat-storage case (5), this moment, phase-transition heat-storage and solar energy system moved simultaneously, and system heats by phase-transition heat-storage heating system and solar energy system shared.
5, heating exports water temperature greater than 55 in phase-transition heat-storage case (5)
oDuring C, temperature passes sensor B and sends signal, Open valve 11, by controlling triple valve 12, solar thermal collector (1) is stopped to phase-transition heat-storage case (5) heat supply, heat is all supplied with heat collection water tank (3), prevent that heating system is overheated, this moment, system's heating was independently born by the phase-transition heat-storage case; Heating outlet water temperature is less than 45 in phase-transition heat-storage case (5)
oDuring C, temperature passes sensor B and sends signal, and solar thermal collector is stopped to heat collection water tank (3) heat supply, and heat is all supplied with phase-transition heat-storage case (5).The heat of accumulating in heat collection water tank (3) can prevent solar thermal collector when night, solar energy circulating system was closed in, water freezes.
Claims (7)
1. solar energy combined type phase-transition heat-storage heating system, comprise mainly by solar thermal collector (1), heating end (9) forms solar thermal collector direct heating not accumulation of heat circulation heating loop I, comprise mainly by solar thermal collector (1), phase-transition heat-storage case (5), the solar thermal collector direct heating that heating end (9) forms adds accumulation of heat circulation heating loop II, comprise mainly by solar thermal collector (1), phase-transition heat-storage case (5), the solar energy that heating end (9) forms and phase-transition heat-storage case series connection heating circulation heating loop III, comprise mainly by phase-transition heat-storage case (5), heating end (9) forms phase-transition heat-storage case heating circulation heating loop IV, comprise mainly by auxiliary thermal source (2), heating end (9) forms auxiliary thermal source heating circulation heating loop V, it is characterized in that:
A, described solar thermal collector direct heating not accumulation of heat circulation heating loop I comprises solar thermal collector (1), solar energy circulating pump (4), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
B, described solar thermal collector direct heating add accumulation of heat circulation heating loop II and comprise solar thermal collector (1), solar energy circulating pump (4), phase-transition heat-storage case (5), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
C, described solar energy and phase-transition heat-storage case series connection heating circulation heating loop III comprise solar thermal collector (1), phase-transition heat-storage case (5), solar energy circulating pump (4), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
D, described phase-transition heat-storage case heating circulation heating loop IV comprises phase-transition heat-storage case (5), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
E, described auxiliary thermal source heating circulation heating loop V comprises auxiliary thermal source (2), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
F, described solar thermal collector direct heating not accumulation of heat circulation heating loop I, solar thermal collector direct heating add accumulation of heat circulation heating loop II, solar energy and phase-transition heat-storage case series connection heating circulation heating loop III, phase-transition heat-storage case heating circulation heating loop IV, auxiliary thermal source heating circulation heating loop V alternate run; Conversion between each heating circulation heating loop is by the valve regulated on pipeline; Pump in system, valve automatically controlled device, temperature sensor and auxiliary thermal source control are electrically connected to controller (10) respectively.
2. solar energy combined type phase-transition heat-storage heating system, comprise mainly by solar thermal collector (1), heating end (9) forms solar thermal collector direct heating not accumulation of heat circulation heating loop I comprises mainly by solar thermal collector (1), phase-transition heat-storage case (5), the solar thermal collector direct heating that heating end (9) forms adds accumulation of heat circulation heating loop II, comprises mainly by solar thermal collector (1), phase-transition heat-storage case (5), the solar energy that heating end (9) forms and phase-transition heat-storage case series connection heating circulation heating loop III comprise mainly by phase-transition heat-storage case (5), heating end (9) forms phase-transition heat-storage case heating circulation heating loop IV comprises mainly by auxiliary thermal source (2), heating end (9) forms auxiliary thermal source heating circulation heating loop V comprises mainly by solar thermal collector (1), solar energy circulating pump (4), phase-transition heat-storage case (5), auxiliary thermal source (2), the solar energy that heating end (9) forms and auxiliary thermal source series connection heating circulation heating loop VI, it is characterized in that:
A, described solar thermal collector direct heating not accumulation of heat circulation heating loop I comprises solar thermal collector (1), solar energy circulating pump (4), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
B, described solar thermal collector direct heating add accumulation of heat circulation heating loop II and comprise solar thermal collector (1), solar energy circulating pump (4), phase-transition heat-storage case (5), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
C, described solar energy and phase-transition heat-storage case series connection heating circulation heating loop III comprise solar thermal collector (1), phase-transition heat-storage case (5), solar energy circulating pump (4), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
D, described phase-transition heat-storage case heating circulation heating loop IV comprises phase-transition heat-storage case (5), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
E, described auxiliary thermal source heating circulation heating loop V comprises auxiliary thermal source (2), heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
F, described solar energy and auxiliary thermal source series connection heating circulation heating loop VI comprise solar thermal collector (1), solar energy circulating pump (4), phase-transition heat-storage case (5), auxiliary thermal source (2) heating feed pipe (6), heating return pipe (7), heating circulating pump (8) and heating end (9), water pipe UNICOM between all parts;
G, described solar thermal collector direct heating not accumulation of heat circulation heating loop I, solar thermal collector direct heating add accumulation of heat circulation heating loop II, solar energy and phase-transition heat-storage case series connection heating circulation heating loop III, phase-transition heat-storage case heating circulation heating loop IV, auxiliary thermal source heating circulation heating loop V, solar energy and auxiliary thermal source series connection heating circulation heating loop VI alternate run; Conversion between each heating circulation heating loop is by the valve regulated on pipeline; Pump in system, valve automatically controlled device, temperature sensor and auxiliary thermal source control are electrically connected to controller (10) respectively.
3. solar energy combined type phase-transition heat-storage heating system according to claim 2, solar thermal collector and auxiliary thermal source can be taked the form of connecting, can can not heat but some heat can the used time at the sun, first heating water return is heated to certain temperature, heated by auxiliary thermal source again, can reduce the energy consumption of auxiliary thermal source.
4. 2 described solar energy combined type phase-transition heat-storage heating systems according to claim 1,, it is characterized in that described auxiliary thermal source can be water resource heat pump, earth source heat pump, boiler or other forms of auxiliary thermal source, can take form in parallel with solar thermal collector.
5. 2 described solar energy combined type phase-transition heat-storage heating systems according to claim 1,, it is characterized in that: the heat-storing material in described phase-transition heat-storage case (5) can be the organic matters such as paraffin, aliphatic acid, can be also the inorganic matters such as water and salt, also comprise above-mentioned encapsulation phase change heat storage material afterwards, its phase transition temperature is at 0 ~ 100 ℃.
6. according to claim 1,2 described solar energy combined type phase-transition heat-storage heating systems, it is characterized in that: described heating output closed circuit, the heating Terminal device can be flooring radiation heating, radiator heating, can be also the forms such as fan coil.
7. according to claim 1,2 described solar energy combined type phase-transition heat-storage heating systems, it is characterized in that: should add ethylene glycol or other anti-icing fluid in described heating water, in order to avoid solar thermal collector freezes.
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