CN208029661U - Temp auto-controlled solar energy greenhouse system based on phase-change heat storage technology - Google Patents

Temp auto-controlled solar energy greenhouse system based on phase-change heat storage technology Download PDF

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CN208029661U
CN208029661U CN201820036203.XU CN201820036203U CN208029661U CN 208029661 U CN208029661 U CN 208029661U CN 201820036203 U CN201820036203 U CN 201820036203U CN 208029661 U CN208029661 U CN 208029661U
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water
valve
greenhouse
phase
heat
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杨宾
高丽媛
赵灵
陈立刚
郝梦琳
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Hebei University of Technology
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Hebei University of Technology
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    • 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
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25Greenhouse technology, e.g. cooling systems therefor
    • 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

Abstract

The utility model is related to the temp auto-controlled solar energy greenhouse system based on phase-change heat storage technology, which includes phase change thermal storage wall, automatic controls, solar thermal collector, heat collector outlet pipe, heat collector return pipe, electromagnetic water inlet valve, inlet triplet for water pipe fitting, return water tee pipe fitting, ground circulation line, electrical heat tracing water tank and cold water water supply tank.The system increases solar thermal collector and automatic controls on the basis of traditional Greenhouse System, it is phase change thermal storage wall structure to improve greenhouse brick wall structure simultaneously, by solar thermal collector daytime efficient absorption solar heat and by water cycle heating accumulation of heat is carried out to greenhouse, indoor environment, which is stablized, to be realized to accumulation of heat between being carried out in vain in greenhouse and night heat release regulation and control using phase change thermal storage wall, data acquisition process and auto-control are carried out to Greenhouse System using automatic controls, realize economize on resources with it is environmental-friendly, there is positive effect for agriculture in greenhouse development.

Description

Temp auto-controlled solar energy greenhouse system based on phase-change heat storage technology
Technical field
The utility model is related to industrialized agriculture greenhouse technology fields, and in particular to a kind of automatic control based on phase-change heat storage technology Temperature solar Greenhouse System.The system application automatic controls adjusts solar thermal collector and collects heat and phase change thermal storage wall Heat charge and discharge realizes that greenhouse is energy-efficient.
Background technology
With the improvement of living standards, people are also higher and higher for the rich and nutritional requirement of diet on dining table.I State's most area is not suitable for planting and growing crops in cold winter, leads to yield shortage and the price of winter fresh vegetables and fruits It is expensive.Agriculture in greenhouse compensates for this disparities between supply and demand as a kind of modern agricultural technology.Widely used greenhouse system of current China System mostly using traditional brick wall as enclosed structure and light transmission film covering as roof structure, stores emission capacity to improve wall, Also there is research to add the mode of phase-change material in greenhouse wall body to improve the thermal isolation and heat storage in greenhouse, but in cold season at present Under section especially cold season nighttime conditions, since sunlight collection rate on daytime is relatively low, even if being protected by adding phase-change material enhancing Temp effect often still can not achieve the preference temperature environment of plant growth, it may occur that freeze injury and damage to plants caused by sudden drop in temperature phenomenon.In order to ensure temperature Chamber system nocturnal temperature stablize, Greenhouse System maintenance personnel also need to night to greenhouse carry out burn coal auxiliary heating, both took Vast resources pollutes the environment again, while also greatly increasing person works' amount, and supervision is not in place also to will produce economic loss, no The level of informatization is expanded the scale of production and improved conducive to agriculture in greenhouse.Therefore, effectively improve heliogreenhouse sun light utilization efficiency and Heat preservation property, and realize that intelligent management and control is urgent problem to be solved in the prior art.
Utility model content
In view of the deficiencies of the prior art, the technical issues of the utility model intends to solve is to provide a kind of based on phase-transition heat-storage The temp auto-controlled solar energy greenhouse system of technology.The system increases solar thermal collector and oneself on the basis of traditional Greenhouse System Dynamic control mechanism, while it is phase change thermal storage wall structure to improve greenhouse brick wall structure, the system is existed by solar thermal collector Daytime efficient absorption solar heat and by water cycle heating accumulation of heat is carried out to greenhouse, using phase change thermal storage wall in greenhouse Accumulation of heat and night heat release regulation and control realize that indoor environment is stablized between carrying out in vain, and data are carried out to Greenhouse System using automatic controls Acquisition process and auto-control, realize economize on resources with it is environmental-friendly, for agriculture in greenhouse development have positive effect.
The utility model solve the technical problem the technical solution adopted is that, provide a kind of based on phase-change heat storage technology Temp auto-controlled solar energy greenhouse system, it is characterised in that the Greenhouse System includes phase change thermal storage wall, automatic controls, solar energy Heat collector, heat collector outlet pipe, heat collector return pipe, electromagnetic water inlet valve, inlet triplet for water pipe fitting, return water tee pipe fitting, ground are followed Endless tube road, electrical heat tracing water tank and cold water water supply tank;
The electrical heat tracing water tank is installed on outside greenhouse, and electrical heat tracing water tank is internally provided with electric heater unit, is used Start self-heating when water temperature is too low;The cold water water supply tank is installed on outside greenhouse side by side with electrical heat tracing water tank;
The solar thermal collector is connect by heat collector outlet pipeline with one end of the first T-way change-over solenoid valve (S1), One end of the second end connection inlet triplet for water pipe fitting of first T-way change-over solenoid valve (S1), the other both ends point of inlet triplet for water pipe fitting One end of the first electromagnet cut off valve (B1) and third electromagnet cut off valve (B3), the other end of the first electromagnet cut off valve (B1) are not connected The import of cold water water supply tank, third electromagnet cut off valve are connected through cold water storage cistern inlet pipeline (H1) by first circulation water pump (P1) (B3) the other end by the warm water tank water intake pipeline (E1) of third water circulating pump (P3) connect electrical heat tracing water tank into Mouthful;Solar thermal collector connects one end of the second T-way change-over solenoid valve (S2), the second electromagnetism three by heat collector water return pipeline One end of the second end connection return water tee pipe fitting of logical reversal valve (S2), the other both ends of return water tee pipe fitting are separately connected second The other end of one end of electromagnet cut off valve (B2) and the 4th electromagnet cut off valve (B4), the second electromagnet cut off valve (B2) goes out through cold water storage cistern Water lines (H2) connect the outlet of cold water water supply tank, the warm radiator drain road of the other end of the 4th electromagnet cut off valve (B4) (E2) outlet of electrical heat tracing water tank is connected;It is respectively equipped with the first water outlet on the electrical heat tracing water tank and cold water water supply tank Valve (C1) and the second outlet valve (C2);By piping connection between electrical heat tracing water tank and cold water water supply tank, in the connecting tube Road is equipped with electromagnetic water inlet valve, is that electrical heat tracing water tank supplies water by cold water water supply tank, is used for system circulation moisturizing;? It is separately installed with the first y-type filter (A1) and the 2nd Y on the heat collector outlet pipe and heat collector return pipe of solar thermal collector Type filter (A2);
The phase change thermal storage wall is the building enclosure of Greenhouse System, and the phase change thermal storage wall includes wall base, sand Starch screed-coat, wall insulating layer, anti-cracking protective layer, anti-cracking protective layer, phase-change material layers, wall circulation line and finish coat;Institute It states and fills phase-change material in phase-change material layers, wall circulation line is uniformly equipped in phase-change material;Wall circulation line Water inlet connects the third end of the first T-way change-over solenoid valve (S1) by phase-changing wall watering pipeline (G1), with electrical heat tracing Water tank is connected with plate solar collector;The water outlet of wall circulation line connects ground circulation line, and the ground is followed For endless tube road disk cloth in the subsurface in greenhouse, the outlet of ground circulation line connects the second electromagnetism through phase-changing wall drainage pipeline (G2) On the third end of three-way diverter valve (S2), phase-changing wall drainage pipeline (G2) is applied in inside phase change thermal storage wall, is located at phase transformation It is provided with second circulation between phase-changing wall drainage pipeline (G2) outside Heat Storing Wall body and the second T-way change-over solenoid valve (S2) Water pump (P2);
The automatic controls includes PLC control devices, water pump control modules, valve control module, temperature sense dress It sets and Level monitor;The PLC control devices respectively with water pump control modules, valve control module, temperature sensing device, Level monitor is electrically connected, while being electrically connected respectively with the electric heater unit inside solar thermal collector and electrical heat tracing water tank It connects;Temperature sensing device is mounted in greenhouse, and Level monitor is mounted in electrical heat tracing water tank;The water pump controls mould Block is electrically connected with first circulation water pump (P1), second circulation water pump (P2), third water circulating pump (P3) respectively, the valve control Module is cut with electromagnetic water inlet valve, the first T-way change-over solenoid valve (S1), the second T-way change-over solenoid valve (S2), the first electromagnetism respectively Only valve (B1), the second electromagnet cut off valve (B2), third electromagnet cut off valve (B3), the electrical connection of the 4th electromagnet cut off valve (B4).
Compared with prior art, the utility model has the advantages that:
The utility model can be more efficient by applied solar energy heat collector absorption sunshine heat, effectively promote greenhouse Temperature and amount of stored heat, statistics indicate that applied solar energy heat collector can be additionally provided 24- relative to traditional greenhouse in 4-5h 37% thermal demand amount, effectively increases the overall efficiency of Greenhouse System.Solar thermal collector is gone back when greenhouse temperature is enough Electrical heat tracing heating water tanks recirculated water can be converted to, the efficient of solar heat is realized and is stored using with conversion, reduce it The consumption of his fuel meets China's energy-saving and emission-reduction strategy.
By having larger meaning for system stored energy COP using phase change thermal storage wall, for thermal technology's property of Greenhouse System It can be promoted obviously, experiment display is north wall using the tradition relative to common brick wall as enclosed structure by way of accumulation of heat wall The cooling and heating load transfer time in greenhouse and hot-fluid decrement are respectively 2.5h and 43%, stearic using the mixing of paraffinic base bottom in experiment Sour N-butyl compares traditional greenhouse as the lowest temperature in phase-change material test result room and improves 2.3 DEG C, temperature fluctuation amplitude Reduce 4.7 DEG C.Night in winter greenhouse temperature and season mean temperature are above traditional greenhouse of the common brick wall as enclosed structure, This has positive effect for reducing day and night temperature to promote plant growth level.
By using automatic controls, it can effectively acquire greenhouse data and instant temperature control is realized in system conversion, improve The working strength that maintenance personnel is reduced while operating accuracy is conducive to the expansion of hothouse production scale, contributes to crops The raising of yield meets the thinking that national science and technology is got rich with agricultural modernization.
Cooling is carried out by application cold water water supply tank, can effectively reduce warm indoor temperature in time.Warm indoor temperature is excessively high Also ill effect can be generated to crop, the photosynthesis of plant is caused to weaken, respiration enhancing can accelerate the dead of plant It dies.Traditional cool-down method is mostly artificial unlatching cover film ventilating convection, and the heavy while cooling rate that works is slow, includes in system Cold water water supply tank cooling circulates under the control of automatic controls and can open and cool down in time, while cold water water supply tank plays Effect to system circulating water moisturizing.
It is dismountable component by electrical heat tracing water tank in design system and cold water water supply tank, it is suitable in climatic environment This two component can be removed when preferably without using system and increase space and utilization rate is provided.
Solar thermal collector is absorbed recirculated water in sunlight heating tube and is pressurizeed heat using water pump when sunny in winter Phase-changing wall accumulation of heat is passed to, recirculated water makes after entering underground pipe heating soil through return pipe return solar thermal collector cycle With, when being warming up to definite value in greenhouse, automatic controls adjusts temperature control electromagnetic, in solar thermal collector recirculated water commutation flow into Electrical heat tracing water tank.Automatic controls starts water heating greenhouse in water pump circulation electric-heating attemperater when night without sunlight Phase-changing wall heat release simultaneously.When summer high temperature, automatic controls controls solar thermal collector and closes, and the startup of cold water water supply tank follows Ring is greenhouse cooling.
Solar energy, phase-change accumulation energy, electrical heating and automation control are integrated in one by Greenhouse System provided by the utility model It rising, makes each section mating reaction, solar thermal utilization rate is enhanced using solar thermal collector, phase-change material enhances heat preservation property, from Dynamic control mechanism realizes that data reflect in time, Electric heating additional heat, can effectively avoid that freeze injury occurs and damage to plants caused by sudden drop in temperature phenomenon, protect The good growth of hothouse plants is demonstrate,proved, the Greenhouse System is simple in structure, and installation cost is low, has specific operational mode and conversion side Formula, effectively improves the Greenhouse System thermal efficiency on the basis of energy saving, and automation control can be achieved at the same time point family installation High-effect and large-scale application validity.
Description of the drawings
Fig. 1 is the overall structure signal of temp auto-controlled solar energy greenhouse system of the utility model based on phase-change heat storage technology Figure.
Fig. 2 is the schematic cross-sectional view of the phase change thermal storage wall 1 of the utility model.
Fig. 3 is the structural schematic diagram of the automatic controls 2 of the utility model.
In figure, phase change thermal storage wall 1, automatic controls 2, solar thermal collector 3, heat collector outlet pipe 4, heat collector return Water pipe 5, electromagnetic water inlet valve 6, inlet triplet for water pipe fitting 7, return water tee pipe fitting 8, ground circulation line 9, electrical heat tracing water tank 10, Cold water water supply tank 11;Wall base 101, mortar levelling layer 102, wall insulating layer 103, anti-cracking protective layer 104, phase-change material layers 105, wall circulation line 106, finish coat 107;PLC control devices 201, temperature sensing device 202, Level monitor 203; Cold water storage cistern inlet pipeline H1, cold water storage cistern outlet pipeline H2, attemperater inlet pipeline E1, attemperater outlet pipeline E2, phase transformation Wall watering pipeline G1, phase-changing wall drainage pipeline G2;Y-type filter (A1, A2), T-way change-over solenoid valve (S1, S2), electromagnetism Shut-off valve (B1, B2, B3, B4), outlet valve (C1, C2), water circulating pump (P1, P2, P3).
Specific implementation mode
It is further discussed below the utility model with reference to the accompanying drawings and embodiments, but does not protect model in this, as to the application The restriction enclosed.
Temp auto-controlled solar energy greenhouse system (abbreviation Greenhouse System, referring to figure of the utility model based on phase-change heat storage technology 1-3) include phase change thermal storage wall 1, automatic controls 2, solar thermal collector 3, heat collector outlet pipe 4, heat collector return pipe 5, electromagnetic water inlet valve 6, inlet triplet for water pipe fitting 7, return water tee pipe fitting 8, ground circulation line 9, electrical heat tracing water tank 10 and cold Water water supply tank 11;
The electrical heat tracing water tank 10 is installed on outside greenhouse, and electrical heat tracing water tank 10 is internally provided with electrical heating dress It sets, starts self-heating when too low for water temperature;The cold water water supply tank 11 is installed on greenhouse side by side with electrical heat tracing water tank 10 It is external;
The solar thermal collector 3 is connect by heat collector outlet pipeline 4 with one end of the first T-way change-over solenoid valve S1, One end of the second end connection inlet triplet for water pipe fitting 7 of first T-way change-over solenoid valve S1, the other both ends point of inlet triplet for water pipe fitting 7 One end of the first electromagnet cut off valve B1 and third electromagnet cut off valve B3 are not connected, and the other end of the first electromagnet cut off valve B1 passes through Imports of the one water circulating pump P1 through cold water storage cistern inlet pipeline H1 connection cold water water supply tank 11, the other end of third electromagnet cut off valve B3 Pass through the import of the warm water tank water intake pipeline E1 connection electrical heat tracings water tanks of third water circulating pump P3 10;Solar thermal collector 3 connect one end of the second T-way change-over solenoid valve S2 by heat collector water return pipeline 5, and the of the second T-way change-over solenoid valve S2 Two ends connect one end of return water tee pipe fitting 8, the other both ends of return water tee pipe fitting 8 be separately connected the second electromagnet cut off valve B2 and One end of 4th electromagnet cut off valve B4, the other end of the second electromagnet cut off valve B2 is through the H2 connection cold water moisturizings of cold water storage cistern outlet pipeline The outlet of case 11, the warm radiator drain road E2 connection electrical heat tracings water tank of the other end of the 4th electromagnet cut off valve B4 10 Outlet;The first outlet valve C1 and the second outlet valve C2, energy are respectively equipped on the electrical heat tracing water tank and cold water water supply tank 11 Enough discharged water by gravity;By piping connection between electrical heat tracing water tank 10 and cold water water supply tank 11, in the connecting tube Road is equipped with electromagnetic water inlet valve 6, is that electrical heat tracing water tank 10 supplies water by cold water water supply tank 11, is mended for system circulation Water;Be separately installed on the heat collector outlet pipe 4 and heat collector return pipe 5 of solar thermal collector first y-type filter A1 and Second y-type filter A2;
The phase change thermal storage wall 1 replaces building enclosure of the traditional brick wall as Greenhouse System, the phase change thermal storage wall 1 (referring to Fig. 2) includes wall base 101, mortar levelling layer 102, wall insulating layer 103, anti-cracking protective layer 103, anti-cracking protective layer 104, phase-change material layers 105, wall circulation line 106 and finish coat 107;Phase-change material is filled in the phase-change material layers 105, Wall circulation line 106 is uniformly equipped in phase-change material;The water inlet of wall circulation line 106 passes through water on phase-changing wall The third end of pipeline G1 the first T-way change-over solenoid valves of connection S1, with electrical heat tracing water tank 10 and plate solar collector 3 It is connected;The water outlet of wall circulation line 106 connects ground circulation line 9, and 9 disk cloth of the ground circulation line is in greenhouse Subsurface, the outlet of ground circulation line 9 is through the third of phase-changing wall drainage pipeline G2 the second T-way change-over solenoid valves of connection S2 On end, phase-changing wall drainage pipeline G2 is applied in inside phase change thermal storage wall, the phase-changing wall being located at outside phase change thermal storage wall It is provided with second circulation water pump P 2 between drainage pipeline G2 and the second T-way change-over solenoid valve S2.
The automatic controls 2 includes PLC control devices 201, water pump control modules, valve control mould (referring to Fig. 3) Block, temperature sensing device 202 and Level monitor 203;The PLC control devices 201 respectively with water pump control modules, valve Control module, temperature sensing device 202, Level monitor 203 are electrically connected, while being added respectively with solar thermal collector 3 and electricity Electric heater unit electrical connection inside hot attemperater 10;Temperature sensing device 202 is mounted in greenhouse, Level monitor 203 are mounted in electrical heat tracing water tank 10;The water pump control modules respectively with first circulation water pump P 1, second circulation water pump P2, third water circulating pump P3 electrical connection, the valve control module respectively with electromagnetic water inlet valve 6, the first T-way change-over solenoid valve S1, the second T-way change-over solenoid valve S2, the first electromagnet cut off valve B1, the second electromagnet cut off valve B2, third electromagnet cut off valve B3, Four electromagnet cut off valve B4 electrical connections;The number that PLC control devices 201 collect temperature sensing device 202 and Level monitor 203 It is believed that breath carries out processing analysis, by transferring in-house valve control module and water pump control modules come control valve and water The opening and closing of pump is realized carries out operation mode switching to Greenhouse System.
The control terminal (water pump control modules, valve control module) of the automatic controls while connecting outer computer System, data terminal include the Level monitor in temperature sensing device and electrical heat tracing water tank in greenhouse.PLC control devices Temperature value and Water in Water Tank place value for being recycled measurement data, setting valve opening and closing.
It is removable that the utility model, which is further characterized by the electrical heat tracing water tank 10 and cold water water supply tank 11, It unloads.When without using electrical heating and not cold water, this two component can be removed and increase space and increase operation rate.
It is plate-type collector, heat collector absorber plate that the utility model, which is further characterized by the solar thermal collector 3, By absorbing the heat in sunlight come heating system recirculated water, while heat collector tablet can be integrated with Greenhouse building, knot Structure is beautiful.
The utility model is when solar thermal collector is recycled with phase change thermal storage wall storage heating between white, circulating hot water slave phase Become wall watering pipeline G1 to return through phase-changing wall drainage pipeline G2 into after flowing through phase change thermal storage wall 1 and ground circulation line 9 Solar thermal collector 3 is returned, this circular order is conducive to wall accumulation of heat and efficiently utilizes thermal energy.
When night electrical heat tracing water tank combines heat release cycle with phase-changing wall, circulating hot water self-heat conserving radiator drain Enter ground circulation line 9 from phase-changing wall drainage pipeline G2 after road E2 outflows to radiate, while in the work of second circulation water pump P 2 With lower phase-changing wall watering pipeline G1 return electrical heat tracings water tank 10 is flowed into through phase change thermal storage wall 1.This endless form energy Realize that greenhouse is brought rapidly up in the short time, reduces thermal loss and plant debatable time.
When cold water water supply tank cold water down cycles, after the H2 outflows of circulating water self-cooling water tank outlet pipeline under phase-changing wall Water lines G2 enters 9 cooling of ground circulation line and flows into phase through phase change thermal storage wall 1 under the effect of second circulation water pump P 2 simultaneously Become wall watering pipeline G1 Returning waters water supply tank 11.This endless form can realize that greenhouse cools down rapidly in the short time, accelerate Heat transfer and reduction plant debatable time.
The operation principle and process of temp auto-controlled solar energy greenhouse system of the utility model based on phase-change heat storage technology is:? Solar thermal collector 3 is absorbed recirculated water in sunlight heating tube and is pressurizeed heat using second circulation water pump P 2 when winter is sunny 1 accumulation of heat of phase change thermal storage wall is passed to, recirculated water returns after entering 9 heating soil of ground circulation line through heat collector return pipe 5 Solar thermal collector 3 recycles, and when being warming up to definite value in greenhouse, automatic controls 2 adjusts the first T-way change-over solenoid valve S1, the second T-way change-over solenoid valve S2, third electromagnet cut off valve B3, the 4th electromagnet cut off valve B4, the interior cycle of solar thermal collector 3 Water commutation flows into electrical heat tracing water tank 10.Automatic controls 2 starts third water circulating pump P3 cycle electricity when night without sunlight Water in heating and thermal insulation water tank 10, the water after heating is through 9 heating greenhouse of wall circulation line 106 and ground circulation line, simultaneously Phase change material releases heat in phase change thermal storage wall 1.When summer high temperature, automatic controls 2 controls 3 device of solar thermal collector and closes It closes, it is greenhouse cooling that cold water water supply tank 11, which starts cycle,.It is implemented in combination with energy saving while intelligent control greenhouse by above each component The purpose of environment.
There are mainly four types of working cycles moulds for temp auto-controlled solar energy greenhouse system of the utility model based on phase-change heat storage technology Formula:Solar thermal collector and phase change thermal storage wall storage heating cycle between respectively white, it is white between solar thermal collector and electrical heating Attemperater accumulation of heat cycle, night electrical heat tracing water tank combine heat release cycle and cold water water supply tank drop with phase change thermal storage wall Temperature cycle.These four duty cycle modes are explained in detail below.
1) solar thermal collector and phase change thermal storage wall storage heating circulation pattern between white:In the sunny season greenhouse system of low temperature When system needs heating, solar thermal collector 3 absorbs the sunray heat recirculated water of irradiation on the surface, and circulating hot water is certainly Solar thermal collector 3 is after the first y-type filter A1 by heat collector outlet pipe 4 through the first T-way change-over solenoid valve S1 control streams Enter phase change thermal storage wall 1,1 absorption cycle the heat of hot water of phase change thermal storage wall carries out heating accumulation of heat at this time, and the warm water after heat release exists The effect of second circulation water pump P 2 is lower into 9 heating soil of ground circulation line and to pass through the second T-way change-over solenoid valve S2 and the It returns to 3 circulating-heating of solar thermal collector after two y-type filter A2 to use, whole process includes to phase change thermal storage wall accumulation of heat Process and greenhouse heating process effectively increase solar energy utilization ratio and realize conversion storage solar energy source, through phase-transition heat-storage wall Circulating hot water after the heat absorption of body 1 enters ground circulation line after slightly cooling down.The indoor temperature sensing device 202 of temperature is set to examine It measures and feeds back to PLC control devices 201 when heating reaches setting value in greenhouse, 2 control loop of automatic controls opens and closes or conversion.
2) solar thermal collector and electrical heat tracing water tank heat storage circulation pattern between white:When heating is up to setting value in greenhouse Temperature sensing device 202 feeds back to PLC control devices 201, and PLC control devices 201 close the by internal water pump control modules Two-cycle pump P2 opens third water circulating pump P3 simultaneously, while adjusting the first T-way change-over solenoid valve by valve control module S1, the second T-way change-over solenoid valve S2 commutations and unlatching third electromagnet cut off valve B3, the 4th electromagnet cut off valve B4 are transferred to hot water storage Cycle is deposited, the recirculated water sequence of such cycle is that circulating hot water passes through collection from solar thermal collector 3 after the first y-type filter A1 Hot device outlet pipe 4 passes through third electromagnet cut off valve B3 after the first T-way change-over solenoid valve S1 controls flow into inlet triplet for water pipe fitting 7 Enter electrical heat tracing water tank 10 by attemperater outlet pipeline E1, cold water is from heat preservation water under third water circulating pump P3 effect Case outlet pipeline E2 is returned too after flowing through return water tee pipe fitting 8 and the second T-way change-over solenoid valve S2 and the second y-type filter A2 Positive energy 3 circulating-heating of heat collector.Conversion and storage to solar heat are realized in entire cyclic process, while being beneficial to control temperature Room temperature.Solar energy energy on daytime heat cycles water, water temperature can decline night water iterative cycles later, when recirculated water water temperature deficiency Electrical heating can start the water in heating water tank.The application of solar thermal collector can increase water initial temperature, by solar thermal collector and electricity The cooperation of heating and thermal insulation water tank can significantly save energy.
3) night electrical heat tracing water tank combines heat release circulation pattern with phase change thermal storage wall:There is no sunray when night Solar thermal collector 3 absorbs heat and is difficult to heat cycles water, and air environment temperature is relatively low, at this time 1 heat release of phase change thermal storage wall, temperature Temperature data is fed back to PLC control devices 201 by indoor temperature sensing device 202, and PLC control devices 201 pass through water pump control Molding block opens third water circulating pump P3, while adjusting the first T-way change-over solenoid valve S1, the second electricity by valve control module Magnetic three-way diverter valve S2 commutation and open third electromagnet cut off valve B3, the 4th electromagnet cut off valve B4 be transferred to electrical heat tracing water tank with Phase change thermal storage wall combines heat release cycle, the recirculated water sequence of such cycle be it is white between the electrical heat tracing water tank 10 that stores follow Ring hot water flows through the 4th electromagnet cut off valve B4, return water tee pipe fitting 8 and the second electromagnetic three-way from attemperater outlet pipeline E1 and changes It is flowed into after to valve S2 and enters 9 heating soil of ground circulation line, phase change thermal storage wall 1 is flowed under the P3 effects of third water circulating pump Pass through attemperater water inlet pipe after the first T-way change-over solenoid valve S1, inlet triplet for water pipe fitting 7 and third electromagnet cut off valve B3 Road E1 returns to electrical heat tracing water tank 10, and to Greenhouse System heat supply, 10 heat supply of weather extreme severe cold electrical heat tracing water tank is insufficient When PLC control devices 201 electricity of electrical heat tracing water tank 10 is opened according to the feedback information of temperature sensing device in greenhouse 202 Heating device auxiliary heat supplying.
4) cold water water supply tank down cycles:Hot season temperature indoor temperature is excessively high when needing to take cooling measure, in greenhouse Temperature sensing device 202 temperature data is fed back into PLC control devices 201, PLC control devices 201 control mould by water pump Block opens first circulation water pump P 1, while adjusting the first T-way change-over solenoid valve S1, the second electromagnetism three by valve control module Logical reversal valve S2 commutations and the first electromagnet cut off valve B1 of unlatching, the second electromagnet cut off valve B2 are transferred to the cooling of cold water water supply tank water tank and follow The circulating water sequence of ring, such cycle flows through the second electricity for the water at low temperature in cold water water supply tank 11 from cold water storage cistern outlet pipeline H2 It is flowed into after magnetic shut-off valve B2, return water tee pipe fitting 8 and the second T-way change-over solenoid valve S2 and enters the cooling soil of ground circulation line 9 And greenhouse, phase change thermal storage wall 1 is flowed under the effect of first circulation water pump P 1 through the first T-way change-over solenoid valve S1, inlet triplet for water By cold water storage cistern inlet pipeline H1 Returning waters water supply tank 11 after pipe fitting 7 and the first electromagnet cut off valve B1, realize to greenhouse and The fast cooling of soil.When water level deficiency in electrical heat tracing water tank 10, water-level instrumentation device 203 feeds back to PLC controls Device 201, PLC control devices 201 are transferred valve control module unlatching electromagnetic water inlet valve 6 and are mended to electrical heat tracing water tank 10 Water.
System can be closed in the transition season of benign climate, electrical heat tracing water tank 10 and cold water water supply tank 11 are removed Improve space utilization degree.
In actual moving process, automatic controls can ensure indirectly to switch in above-mentioned several modes, realize temperature Chamber system optimal use environment and energy-saving index.
System can be made using the temp auto-controlled solar energy greenhouse system provided by the utility model based on phase-change heat storage technology Control is within the temperature range of suitable for crop is grown.Tthe utility model system can efficiently utilize and convert storage solar energy resources, Suitable growing environment is provided for crops especially anti-season crop, while saving other energy, it is fresh to compensate for winter The yield shortage of vegetables and fruits and expensive defect, while automatic controls greatly improves agricultural modernization level and reduces labor Fatigue resistance is suitable for the northern area of China large-scale application.
Embodiment 1
The present embodiment is in the temp auto-controlled solar energy greenhouse system as described above based on phase-change heat storage technology provided with 10 ㎡ Traditional greenhouse (lower referred to as tradition of the system with 10 ㎡ standards brick walls as enclosed structure and light transmission film covering as roof structure Greenhouse) it is compared, obtain following data:
It is provided by the utility model relative to the cooling and heating load transfer time 2.5h and hot-fluid decrement 43% in traditional greenhouse Temp auto-controlled solar energy greenhouse system based on phase-change heat storage technology can be additionally provided 24- relative to traditional greenhouse in 4-5h 37% thermal demand amount is tested using paraffinic base bottom mixing n-butyl stearate as phase-change material, as a result in experiment The indoor lowest temperature compares traditional greenhouse and improves 2.3 DEG C, 4.7 DEG C of temperature fluctuation amplitude reduction.Realize solar heat It is efficiently stored using with conversion, reduces the consumption of other fuel, meet China's energy-saving and emission-reduction strategy.
The utility model is not directed to place and is suitable for the prior art.

Claims (3)

1. a kind of temp auto-controlled solar energy greenhouse system based on phase-change heat storage technology, it is characterised in that the Greenhouse System includes phase transformation Accumulation of heat wall, automatic controls, solar thermal collector, heat collector outlet pipe, heat collector return pipe, electromagnetic water inlet valve, water inlet Tee pipe fitting, return water tee pipe fitting, ground circulation line, electrical heat tracing water tank and cold water water supply tank;
The electrical heat tracing water tank is installed on outside greenhouse, and electrical heat tracing water tank is internally provided with electric heater unit, is used for water Temperature starts self-heating when too low;The cold water water supply tank is installed on outside greenhouse side by side with electrical heat tracing water tank;
The solar thermal collector is connect by heat collector outlet pipeline with one end of the first T-way change-over solenoid valve (S1), and first One end of the second end connection inlet triplet for water pipe fitting of T-way change-over solenoid valve (S1), the other both ends of inlet triplet for water pipe fitting connect respectively One end of the first electromagnet cut off valve (B1) and third electromagnet cut off valve (B3) is connect, the other end of the first electromagnet cut off valve (B1) passes through First circulation water pump (P1) connects the import of cold water water supply tank through cold water storage cistern inlet pipeline (H1), third electromagnet cut off valve (B3) The other end connects the import of electrical heat tracing water tank by the warm water tank water intake pipeline (E1) of third water circulating pump (P3);The sun Energy heat collector passes through one end that heat collector water return pipeline connects the second T-way change-over solenoid valve (S2), the second T-way change-over solenoid valve (S2) one end of second end connection return water tee pipe fitting, the other both ends of return water tee pipe fitting are separately connected the cut-off of the second electromagnetism One end of valve (B2) and the 4th electromagnet cut off valve (B4), the other end of the second electromagnet cut off valve (B2) is through cold water storage cistern outlet pipeline (H2) outlet of cold water water supply tank, warm radiator drain road (E2) connection of the other end of the 4th electromagnet cut off valve (B4) are connected The outlet of electrical heat tracing water tank;Be respectively equipped on the electrical heat tracing water tank and cold water water supply tank the first outlet valve (C1) and Second outlet valve (C2);By piping connection between electrical heat tracing water tank and cold water water supply tank, it is equipped on the connecting line Electromagnetic water inlet valve;
The phase change thermal storage wall is the building enclosure of Greenhouse System, and the phase change thermal storage wall includes that wall base, mortar are looked for Flat bed, wall insulating layer, anti-cracking protective layer, anti-cracking protective layer, phase-change material layers, wall circulation line and finish coat;The phase Phase-change material is filled in change material layer, and wall circulation line is uniformly equipped in phase-change material;The water inlet of wall circulation line Mouth connects the third end of the first T-way change-over solenoid valve (S1) by phase-changing wall watering pipeline (G1), with electrical heat tracing water tank It is connected with plate solar collector;The water outlet of wall circulation line connects ground circulation line, the ground circulation pipe For road disk cloth in the subsurface in greenhouse, the outlet of ground circulation line connects the second electromagnetic three-way through phase-changing wall drainage pipeline (G2) On the third end of reversal valve (S2), phase-changing wall drainage pipeline (G2) is applied in inside phase change thermal storage wall, is located at phase-transition heat-storage It is provided with second circulation water pump between phase-changing wall drainage pipeline (G2) outside wall and the second T-way change-over solenoid valve (S2) (P2);
The automatic controls include PLC control devices, water pump control modules, valve control module, temperature sensing device and Level monitor;The PLC control devices respectively with water pump control modules, valve control module, temperature sensing device, water level Monitoring device is electrically connected, while being electrically connected respectively with the electric heater unit inside solar thermal collector and electrical heat tracing water tank; Temperature sensing device is mounted in greenhouse, and Level monitor is mounted in electrical heat tracing water tank;The water pump control modules It is electrically connected respectively with first circulation water pump (P1), second circulation water pump (P2), third water circulating pump (P3), the valve controls mould Block ends with electromagnetic water inlet valve, the first T-way change-over solenoid valve (S1), the second T-way change-over solenoid valve (S2), the first electromagnetism respectively Valve (B1), the second electromagnet cut off valve (B2), third electromagnet cut off valve (B3), the electrical connection of the 4th electromagnet cut off valve (B4).
2. the temp auto-controlled solar energy greenhouse system according to claim 1 based on phase-change heat storage technology, it is characterised in that institute It is removably installation to state electrical heat tracing water tank and cold water water supply tank.
3. the temp auto-controlled solar energy greenhouse system according to claim 1 based on phase-change heat storage technology, it is characterised in that institute It is plate-type collector to state solar thermal collector.
CN201820036203.XU 2018-01-10 2018-01-10 Temp auto-controlled solar energy greenhouse system based on phase-change heat storage technology Active CN208029661U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111609568A (en) * 2020-06-05 2020-09-01 上海交通大学 Building combined heat and power generation and humidity regulation system based on photovoltaic photo-thermal component

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111609568A (en) * 2020-06-05 2020-09-01 上海交通大学 Building combined heat and power generation and humidity regulation system based on photovoltaic photo-thermal component

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