CN108276966A - A kind of low degree of supercooling medium temperature phase-change heat-storage material - Google Patents
A kind of low degree of supercooling medium temperature phase-change heat-storage material Download PDFInfo
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- CN108276966A CN108276966A CN201810037788.1A CN201810037788A CN108276966A CN 108276966 A CN108276966 A CN 108276966A CN 201810037788 A CN201810037788 A CN 201810037788A CN 108276966 A CN108276966 A CN 108276966A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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Abstract
A kind of purposes the invention discloses organic compound with low degree of supercooling as phase-change heat-storage material, the fusion temperature when compound heat accumulation are 95 ~ 97 DEG C, and setting temperature when heat release is 90 ~ 93 DEG C；Phase-change thermal storage density is 129 ~ 134 J/g, and when which absorbs and store thermal energy, heat source temperature should control within the scope of 97 ~ 180 DEG C.The organic phase change material can store from solar energy, industry more than waste heat or using electric-net valley phase electric energy heat and obtain thermal energy, and by the thermal energy of storage for Indoor environment heat supply or driving absorption refrigeration mechanism cold, thermal energy is solved for giving use in space or temporal mismatch problem, improves the utilization ratio of the energy.
Description
Technical field
A kind of purposes the present invention relates to organic compound as medium temperature phase-change heat-storage material specifically utilizes one kind
Organic compound with very low degree of supercooling is absorbed or is discharged a large amount of thermal energy by phase transition, solves thermal energy for giving use in sky
Between or temporal mismatch problem, improve the utilization ratio of the energy.
Background technology
Currently, the environmental problem caused by using fossil energy and fossil energy fancy price, make new energy development
Unprecedented attention has been obtained with efficient utilize of the energy.Solar energy is a kind of clean, never exhaustion new energy, industry
Remaining Waste Heat Recovery utilizes and peak load regulation network Fill valley is then the effective means for improving efficiency of energy utilization.Thermal energy is people using at most
Energy form, many activities of people are employed to thermal energy, the especially control of Indoor environment temperature and life with heat more
It is 46% for occupying the overwhelming majority of required thermal energy in people's life, for example building correlation energy consumption Yi Zhan whole society energy consumption.The sun
Energy heat utilization has the advantages that transformation efficiency is high, free of contamination.But solar radiation exist fluctuation, and by solar energy heat production with
The usual existence time of use of thermal energy or mismatch spatially, therefore solar energy heating utilization must solve depositing for thermal energy first
Storage problem.Meanwhile periodically fluctuation is constantly present when Operation of Electric Systems, the electric energy that valley period power net provides is converted into heat
Using can not only generate huge economic benefit when can store for the electricity consumption peak phase, it is also beneficial to power grid even running.This
Outside, waste heat has temperature higher more than industry, and heat quality is high, the big feature of heat generation.Therefore, waste heat returns more than realization industry
It is the important means realized thermal energy and efficiently utilized that receipts, which utilize,.But usually industry more than waste heat generation and thermal energy utilization there is also
Time or mismatch spatially, so also to solve the problems, such as thermal energy storage.Therefore, the storage of thermal energy is to tap a new source of energy,
Improve the important means of efficiency of energy utilization.And phase-change heat-storage material is the key that thermal energy storage.
Sorption type refrigerating technology is to receive the work of formula refrigeration machine by heat-driven to obtain a kind of Refrigeration Technique of cold energy.
When heat source temperature need to be at 80 DEG C or more, the thermal energy obtained by all means can be used for that Absorption Refrigerator is driven to work,
Under normal conditions, heat source temperature is higher, and refrigeration machine working efficiency is higher.It realizes this target, slave phase is required to become heat accumulation first
The heat generating temperature extracted in material is higher than this temperature, therefore it is required that the heat release phase transition temperature of phase-change heat-storage material is higher than 80
℃.Since this temperature is very close to the boiling point of water, cause selectable phase-change heat-storage material very limited.Such as common hydration
Salt phase-change material can fail because of dehydration；Organic phase change material type with suitable phase transition temperature is also considerably less, and for
In few organic phase change material of selection, there is quite a few to there is serious supercooling again such as glycitols material, lead to its storage
The thermal energy deposited can not it is desirable at a temperature of release.Therefore, be highly desirable to find it is new there is suitable phase transition temperature,
The phase-change heat-storage material of low degree of supercooling and good heat storage capacity, to meet new energy development and improve the need of efficiency of energy utilization
It asks.
Invention content
The object of the present invention is to provide a kind of organic compound with very low degree of supercooling as phase-change heat-storage material in heat
The application of energy field of storage.The compound stores by phase transition or discharges thermal energy, solves the problems, such as thermal energy storage, improves energy
The utilization ratio in source.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：A kind of organic compound is as phase-change heat-storage material
Purposes, which has the following structure：；The organic compound phase-change material can lead to
Phase transformation is crossed to store or discharge thermal energy, thermal energy is solved for giving use in space or temporal mismatch problem, improves the energy
Utilization ratio；Fusion temperature when the compound heat accumulation is 95 ~ 97 DEG C, and setting temperature when heat release is 90 ~ 93 DEG C；Phase transformation
Storage density is 129 ~ 134 J/g, and the relationship between thermal capacitance and temperature of the compound in solid-state between -75 ~ 90 DEG C is：
The relationship between thermal capacitance and temperature in liquid between 105 ~ 180 DEG C is：
In upper two formulas Chinese styleC p (s) andC p (l) thermal capacitance when being respectively solid-state and liquid, unit is J/ (DEG C g),TFor temperature,
Unit is DEG C；When the compound absorbs as phase-change heat-storage material and stores thermal energy, heat source temperature should be in 97 ~ 180 DEG C of models
In enclosing.
The organic phase change material can store from solar energy, industry more than waste heat or using electric-net valley phase electric energy heating and
The thermal energy of acquisition, and by the thermal energy of storage for Indoor environment heat supply or driving absorption refrigeration mechanism cold.
Organic phase change material storage is from waste heat more than solar energy, industry or is heated and is obtained using electric-net valley phase electric energy
Thermal energy when, be phase-change material to be placed in a constant volume device, then the container of phase-change material and solar thermal collector, industry will be filled
Remaining waste heat heat source or electric heater are in direct contact to be allowed to melt with heating phase-change material, or by heat-transfer working medium by thermal energy from the sun
It can heat collector, waste heat heat source or electric heater passes to the phase-change material in container and heating phase-change material is allowed to melt more than industry
The methods of realize, the heat-transfer working medium can be water, water vapour or conduction oil.
When the thermal energy by phase-change material storage is for Indoor environment heat supply or driving absorption refrigeration mechanism cold, need
Thermal energy is conveyed to the evaporator of household heater or Absorption Refrigerator using heat-transfer working medium from phase-change material, the working medium can
To be water or conduction oil；When using water as heat-transfer working medium, the hot water heated by phase-change material also can be directly as life
Hot water uses.
The thermal energy by phase-change material storage is by refrigerant heat transfer for Indoor environment heat supply or the absorption system of driving
When cold is freezed, Temperature of Working after phase-change heat-storage material heats can before heating Temperature of Working to connecting in the range of 90 DEG C
It is continuous adjustable.
The invention has the advantages that.
The present invention provides using a kind of organic compound as phase-change heat-storage material storage from solar energy, industry more than waste heat
And the purposes of the thermal energy of electric-net valley phase electric energy.The Organic phase change thermal storage material has very low degree of supercooling, suitable suction heat release temperature
Degree, higher heat storage capacity and good long-time service stability.The thermal energy of Organic phase change thermal storage material storage can be used as driving
Move the heat source of Absorption Refrigerator work or directly as indoor life heat source.
Specific implementation mode.
With reference to specific embodiment, present invention is further described in detail, straight with electric heater in following embodiments
It connects heating phase-change heat-storage material and simulates various types of heat sources and provide thermal energy for phase-change heat-storage material, but these embodiments and unlimited
The scope of the present invention processed.
Embodiment 1.
About 5mg organic phase change materials are taken, on TA Q2000 differential scanning calorimeters, with the heating rate of 10 DEG C/min,
From room temperature to 150 DEG C of progress differential scanning calorimetries, the fusing point for measuring the organic phase change material is 95 ~ 97 DEG C, and fusion enthalpy is about 134
J/g；About 5mg organic phase change materials are taken, on TA Q2000 differential scanning calorimeters, with the warming and cooling rate of 10 DEG C/min,
40 DEG C to 140 DEG C ranges carry out 50 cycle differential scanning calorimetries, and the fusing point for measuring the organic phase change material is stablized 95 always
Within the scope of ~ 97 DEG C, setting temperature is stablized within the scope of 90 ~ 93 DEG C, and fusion enthalpy and solidification enthalpy are stablized in 129 ~ 134 J/g always
In range.
Embodiment 2.
It is 5mm by outer diameter, it is 5mm that the copper pipe of wall thickness 0.3mm, which is bent into tube spacing, and disk diameter is 4.5 cm, totally 4 layers of circle
Coil pipe is put into the straight type glasses of 150mL of the asbestos material package by 1cm thickness around, adds by the coil pipe that disk is constituted
100g organic phase change materials, coil pipe is embedded to, then rim of a cup is covered with thermal insulation material, the port of coil pipe emersion lid 2cm again with
Heat-resistant rubber hose connects；The temperature for controlling electric heater is 97 DEG C, from bottom-heated glass, keeps organic phase change material all molten
Change, stop heating, 25 DEG C of tap water is passed through into coil pipe, controls the flow of water, can control exit water temperature degree is 60 DEG C.
Embodiment 3.
It is 160 DEG C by the electric heater temperature control in embodiment 2, from bottom-heated glass, makes organic phase change material
All fusings stop heating, 25 DEG C of conduction oil are passed through into coil pipe, control the flow of oil, and can control outlet oil temperature is 85
℃。
Embodiment 4.
It is 180 DEG C by the electric heater temperature control in embodiment 2, from bottom-heated glass, makes organic phase change material
All fusings stop heating, 25 DEG C of conduction oil are passed through into coil pipe, control the flow of oil, outlet oil temperature can be made gradually to rise
Height is stablized to 90 DEG C in this temperature.
Claims (5)
1. a kind of purposes of organic compound as phase-change heat-storage material, it is characterised in that the compound has the following structure：；The compound can store by phase transformation or discharge thermal energy, solve thermal energy and exist for giving use
Space or temporal mismatch problem improve the utilization ratio of the energy, and the compound has very low degree of supercooling；The chemical combination
Fusion temperature when object heat accumulation is 95 ~ 97 DEG C, and setting temperature when heat release is 90 ~ 93 DEG C；Phase-change thermal storage density is 129 ~ 134
J/g, the relationship between thermal capacitance and temperature of the compound in solid-state between -75 ~ 90 DEG C are：
,
The relationship between thermal capacitance and temperature in liquid between 105 ~ 180 DEG C is：
,
In upper two formulas Chinese styleC p (s) andC p (l) thermal capacitance when being respectively solid-state and liquid, unit is J/ (DEG C g),TFor temperature,
Unit is DEG C；When the compound absorbs as phase-change heat-storage material and stores thermal energy, heat source temperature should be in 97 ~ 180 DEG C of ranges
It is interior.
2. purposes of the organic compound according to claim 1 as phase-change material, it is characterised in that the organic phase-change material
Material can store from waste heat more than solar energy, industry or heated using electric-net valley phase electric energy and the thermal energy that obtains, and by storage
Thermal energy is for Indoor environment heat supply or driving absorption refrigeration mechanism cold.
3. purposes of the organic compound according to claim 2 as phase-change material, it is characterised in that the organic phase-change
Material storage from solar energy, industry more than waste heat or using electric-net valley phase electric energy heat and obtain thermal energy when, be by phase transformation material
Material is placed in a constant volume device, then will fill waste heat heat source or electrical heating more than the container of phase-change material and solar thermal collector, industry
Device is in direct contact to be allowed to melt with heating phase-change material, or by heat-transfer working medium by thermal energy from solar thermal collector, industry more than give up
The methods of heat source or electric heater pass to the phase-change material in container and heating phase-change material is allowed to melt to realize, described
Heat-transfer working medium can be water, water vapour or conduction oil.
4. purposes of the organic compound according to claim 2 as phase-change material, it is characterised in that described by phase transformation material
Material storage thermal energy for Indoor environment heat supply or driving absorption refrigeration mechanism cold when, need to use heat-transfer working medium by thermal energy from
Phase-change material is conveyed to the evaporator of household heater or Absorption Refrigerator, and the working medium can be water or conduction oil；When making
When using water as heat-transfer working medium, the hot water heated by phase-change material can also be used directly as domestic hot-water.
5. the thermal energy according to claim 4 by phase-change material storage by refrigerant heat transfer for Indoor environment heat supply or
When driving absorption refrigeration mechanism cold, it is characterised in that Temperature of Working after phase-change heat-storage material heats can working medium before heating
Temperature is continuously adjusted in the range of 90 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037788.1A CN108276966A (en) | 2018-01-16 | 2018-01-16 | A kind of low degree of supercooling medium temperature phase-change heat-storage material |
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| CN201810037788.1A CN108276966A (en) | 2018-01-16 | 2018-01-16 | A kind of low degree of supercooling medium temperature phase-change heat-storage material |
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| CN108276966A true CN108276966A (en) | 2018-07-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109021933A (en) * | 2018-09-14 | 2018-12-18 | 兰州理工大学 | Purposes of the dioctadecylamine as phase-changing energy storage material |
-
2018
- 2018-01-16 CN CN201810037788.1A patent/CN108276966A/en active Pending
Non-Patent Citations (4)
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| SOLABANNAVAR, S. B.: "Heck reaction in aqueous medium using Amberlite IRA-400", 《GREEN CHEMISTRY》 * |
| URUSHIBARA, YOSHIYUKI; HIROTA, MINORU: "Isomerism and polymorphism of cinnamic acids. IV. α- and β-Substituted cinnamic acids", 《NIPPON KAGAKU ZASSHI》 * |
| 孙金煜等: "《材料物理》", 31 March 2013, 华东理工大学出版社 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109021933A (en) * | 2018-09-14 | 2018-12-18 | 兰州理工大学 | Purposes of the dioctadecylamine as phase-changing energy storage material |
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