CN106766276B - Efficient heat storage water tank capable of utilizing phase change materials in layered mode and design method thereof - Google Patents
Efficient heat storage water tank capable of utilizing phase change materials in layered mode and design method thereof Download PDFInfo
- Publication number
- CN106766276B CN106766276B CN201611125546.5A CN201611125546A CN106766276B CN 106766276 B CN106766276 B CN 106766276B CN 201611125546 A CN201611125546 A CN 201611125546A CN 106766276 B CN106766276 B CN 106766276B
- Authority
- CN
- China
- Prior art keywords
- water tank
- phase
- phase change
- change material
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 239000012782 phase change material Substances 0.000 title claims abstract description 64
- 238000005338 heat storage Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title abstract description 10
- 238000004321 preservation Methods 0.000 claims abstract description 8
- 238000004146 energy storage Methods 0.000 claims abstract description 5
- 238000004806 packaging method and process Methods 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000011491 glass wool Substances 0.000 claims description 2
- 238000013517 stratification Methods 0.000 claims description 2
- 238000013316 zoning Methods 0.000 claims 3
- 239000012611 container material Substances 0.000 claims 1
- 239000010865 sewage Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000005192 partition Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S2080/01—Selection of particular materials
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
An efficient heat storage water tank capable of utilizing phase change materials in a layered mode and a design method thereof. The water tank comprises a water tank inner container, phase change material layers with different temperatures, a heat preservation layer, a water inlet, a water outlet and a sewage outlet from inside to outside in sequence. The phase-change material is arranged between the water tank inner container and the heat-insulating layer in a layered mode, and the heat storage and heat-insulating capacity of the water tank is improved by utilizing the characteristic of poor energy storage and heat conducting performance of the phase-change material. The temperature difference of every 3 ℃ in the vertical direction in the water tank is set as an area, the central temperature of the area is taken as a reference to select the temperature of the phase-change material, the invention realizes the efficient utilization of the phase-change material under the condition of not additionally occupying the water storage volume of the water tank, improves the heat preservation function of the heat storage water tank to a certain extent, and meets the domestic hot water requirements of users at different times.
Description
Technical Field
The invention relates to the field of heat storage water tanks, in particular to an efficient heat storage water tank capable of utilizing phase change materials in a layered mode and a design method thereof.
Background
Solar water heaters have become common commodities in people's home life, and are more and more favored by consumers due to safety, energy conservation and environmental protection. The traditional solar water heater water storage tank is insulated by filling a thick polyurethane material between an inner container and a shell, and the heat is prevented from being transferred outwards by utilizing the characteristic of poor heat conductivity of the polyurethane material; there are also products in which a heat-reflective film is applied between the polyurethane material and the outer shell and the inner container to reduce heat dissipation. Because the polyurethane material has a general heat insulation effect and basically has no defects of heat storage capacity and the like, the heat dissipation capacity of the water storage tank is still large, and the heat insulation effect is difficult to meet the requirements of users. The use of the solar water heater is greatly influenced, so the heat preservation problem of the water storage tank is an important reason for limiting the solar water heater to effectively meet the requirement of a user on the hot water temperature. Phase change materials with high energy storage density and low heat conductivity coefficient are used outside a water tank and serve as energy storage and heat insulation materials, but in the current use, the phase change materials are simply packaged between a heat insulation layer and a water tank liner, and the phase change materials are not reasonably designed and optimized. Generally, phase change materials are selected at the temperature required by domestic hot water, and because the temperature stratification in the vertical direction exists in the water tank, when the phase change materials on the upper part of the water tank complete phase change, most of the phase change materials on the lower part of the water tank cannot complete phase change, so that the utilization rate of the phase change materials is greatly reduced, the heat storage performance of the water tank cannot be improved, and the heat storage performance of the water tank is reduced.
Disclosure of Invention
The invention aims to solve the problem of poor heat preservation effect of a water storage tank of the existing solar water heater, and provides the high-efficiency heat storage water tank using the phase change material in a layered mode and the design method thereof, so that the phase change material in the water tank can completely complete phase change, the effects of energy storage and heat preservation are truly achieved, and the overall heat preservation effect of the water tank is improved.
The invention provides an efficient heat storage water tank capable of utilizing phase change materials in a layered mode and a design method thereof.
The top and the bottom in the water tank are respectively provided with a temperature partition, and the temperature partitions are carried out at intervals of 3-DEG C temperature difference in the water tank.
The phase-change material is paraffin or a phase-change material with low heat conductivity coefficient.
And selecting the phase change temperature of the phase change material according to the central temperature of the corresponding area.
The phase-change material is encapsulated by adopting an annular encapsulation structure.
The design height of the annular packaging structure is the same as the height of the inner partition of the water tank.
And fins are arranged in the annular packaging structure to enhance the heat exchange of the phase-change material.
Wherein, annular packaging structure is the pin-connected panel, and each annular packaging structure can splice each other, and the later stage of being convenient for is changed and is overhauld phase change material layer.
Wherein, the filling thickness ratio of the phase-change material to the traditional heat-insulating material, such as glass wool or polyurethane, is 1: 1.
The beneficial effects created by the invention are as follows: phase change materials with different phase change temperatures corresponding to the temperature zones in the heat storage water tank are reasonably arranged in the heat storage water tank in a partitioned manner, so that when water in the water tank is heated, the phase change materials at different positions in the water tank can reach respective phase change temperatures, redundant heat in the water tank is absorbed and stored through a phase change process (melting), and the water temperature in each area in the water tank is kept constant; when the temperature of the hot water in the water tank is reduced after the heating is stopped for a period of time, the phase change material in the corresponding section transfers the stored latent heat to the water in the water tank through the phase change process (solidification) again, and the temperature of the water in each area in the water tank is kept constant. Therefore, the phase-change material can well preserve heat of hot water in the heat storage water tank, and can meet the hot water requirement of a user for a long time.
Drawings
FIG. 1 is a schematic diagram of a high-efficiency heat storage water tank using phase-change materials in a layered manner:
in the figure, 1 is a water tank inner container, 2 is an insulating layer, 3 is a top phase change material, 4 is an upper phase change material, 5 is a middle phase change material, 6 is a lower phase change material, 7 is a bottom phase change material, 8 is a water tank water outlet, 9 is a water tank water inlet, and 10 is a sewage outlet.
FIG. 2 is a schematic view of a ring package structure:
in the figure, 1 is a water tank inner container, 11 is a packaging structure main body, 12 is a fin, 13 is a phase change material inlet, 14 is an upper clamping groove, and 15 is a lower clamping groove.
Detailed Description
The invention will be further described with reference to the following examples.
The invention creates an efficient heat storage water tank capable of utilizing phase change materials in a layered mode and a design method thereof, and as shown in figure 1, the efficient heat storage water tank structurally comprises a water tank inner container 1, a heat insulation layer 2, phase change materials with different temperatures 3-7, a water inlet 8, a water outlet 9 and a sewage outlet 10.
The water tank inner container 1 is preferably a cylindrical water tank 1, the top of the water tank is made of a phase-change material 2, the phase-change material on the outer side of the water tank inner container is 4-6 from high to low, the bottom of the water tank is made of a phase-change material 7, and the phase-change material is covered by a heat-insulating layer 2.
The phase-change material is paraffin or a phase-change material with low heat conductivity coefficient.
The phase-change materials with different phase-change temperatures outside the water tank are packaged by utilizing the annular packaging structure, and all layers of phase-change materials corresponding to all temperature zones are in smooth parallel contact without gaps.
The heat-insulating layer 2 and the phase-change material are tightly attached without gaps and air in the middle.
The height of the annular packaging structure is the same as the height of the inner partition of the water tank, and fins are arranged inside the annular packaging structure and used for enhancing heat exchange.
In fig. 2, fins 12 are vertically installed inside a packaging structure main body 11 in the annular packaging structure at even intervals, a phase-change material inlet 13 is formed in the upper portion of the packaging structure main body 11, an upper clamping groove 14 and a lower clamping groove 15 corresponding to the upper clamping groove are designed in the side face of the packaging structure main body 11, connection among different packaging structures is facilitated, and installation, overhaul and replacement are facilitated.
When the hot water in each temperature zone begins to radiate heat outwards and the temperature is reduced, the heat stored in the corresponding phase change material begins to be released to the hot water in each zone, so that the temperature of the hot water is kept constant, and the temperature of the hot water in the water tank is effectively kept stable through the phase change heat storage and heat release processes.
Claims (5)
1. The utility model provides a phase change material's high-efficient heat storage water tank is utilized in layering, includes water tank inner bag, different temperature phase change material layer, heat preservation, water inlet, delivery port and drain, its characterized in that: the heat-insulating layer is externally sealed in the water tank inner container, and phase-change material layers with different phase temperatures are arranged between the water tank inner container and the heat-insulating layer; meanwhile, the heat storage and insulation capacity of the water tank is improved by utilizing the characteristics of good energy storage performance of the phase-change material and poor heat conduction performance of the insulation layer; because the water stored in the water tank has temperature stratification in the vertical direction, in order to ensure that phase change materials in the side wall of the water tank can complete phase change, the water tank is subjected to temperature zoning in the vertical direction, meanwhile, the top and the bottom in the water tank are set as the temperature zoning, the temperature zoning is carried out in the water tank at intervals of 3 ℃ temperature difference, and the selected phase change materials with different phase change temperatures are arranged between the inner container of the water tank and the heat preservation layer; the phase change material temperature is referenced to the center temperature of the temperature zones at different locations.
2. The efficient heat storage water tank for layered utilization of phase change materials as claimed in claim 1, wherein: the phase-change material arranged outside the water tank is packaged by adopting a ring packaging structure.
3. The efficient heat storage water tank for layered utilization of phase change materials as claimed in claim 2, wherein: the design height of the ring packaging structure is the same as the height of temperature division in the water tank.
4. The efficient heat storage water tank for layered utilization of phase change materials as claimed in claim 2, wherein: the ring packaging structure is of an assembled type, and the ring packaging structures can be spliced mutually, so that the phase change material layer can be replaced and maintained at the later stage.
5. The efficient heat storage water tank for layered utilization of phase change materials as claimed in claim 1, wherein: the filling thickness ratio of the phase-change material with different phase-change temperatures to the glass wool or polyurethane of the traditional heat-insulating layer material is 1: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611125546.5A CN106766276B (en) | 2016-12-09 | 2016-12-09 | Efficient heat storage water tank capable of utilizing phase change materials in layered mode and design method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611125546.5A CN106766276B (en) | 2016-12-09 | 2016-12-09 | Efficient heat storage water tank capable of utilizing phase change materials in layered mode and design method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106766276A CN106766276A (en) | 2017-05-31 |
| CN106766276B true CN106766276B (en) | 2020-03-10 |
Family
ID=58882112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611125546.5A Active CN106766276B (en) | 2016-12-09 | 2016-12-09 | Efficient heat storage water tank capable of utilizing phase change materials in layered mode and design method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106766276B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10098267B1 (en) * | 2017-06-06 | 2018-10-09 | Robert Bosch Llc | Housing for a camera and method of manufacture |
| CN108679841A (en) * | 2018-06-19 | 2018-10-19 | 广州大学 | Samming Heat Pump water tank |
| CN110579018B (en) * | 2019-08-01 | 2021-02-19 | 广东工业大学 | Heat pump water heater |
| CN113028644B (en) * | 2021-03-05 | 2022-09-02 | 华北水利水电大学 | Multi-stage phase-change heat storage temperature layering water tank |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201081316Y (en) * | 2007-08-10 | 2008-07-02 | 上海理工大学 | Temperature stratified thermal storage water tank with built-in phase-change material |
| CN201583173U (en) * | 2009-11-02 | 2010-09-15 | 上海汽车资产经营有限公司 | Combined type heat storage device |
| CN102374685A (en) * | 2011-12-12 | 2012-03-14 | 云南师范大学 | Thermal insulation water tank of solar water heater |
| CN103090459A (en) * | 2013-03-13 | 2013-05-08 | 兰州理工大学 | Efficient temperature stratification heat exchange energy storage water tank with internally arranged phase change thermal storage materials |
| GB2510375A (en) * | 2013-01-31 | 2014-08-06 | Basic Holdings | Hot water system comprising a heat source and a tank including a phase change material |
| CN105008840A (en) * | 2012-12-27 | 2015-10-28 | 加泰罗尼亚理工大学 | Thermal energy storage system combining solid sensible heat material and phase change material |
-
2016
- 2016-12-09 CN CN201611125546.5A patent/CN106766276B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201081316Y (en) * | 2007-08-10 | 2008-07-02 | 上海理工大学 | Temperature stratified thermal storage water tank with built-in phase-change material |
| CN201583173U (en) * | 2009-11-02 | 2010-09-15 | 上海汽车资产经营有限公司 | Combined type heat storage device |
| CN102374685A (en) * | 2011-12-12 | 2012-03-14 | 云南师范大学 | Thermal insulation water tank of solar water heater |
| CN105008840A (en) * | 2012-12-27 | 2015-10-28 | 加泰罗尼亚理工大学 | Thermal energy storage system combining solid sensible heat material and phase change material |
| GB2510375A (en) * | 2013-01-31 | 2014-08-06 | Basic Holdings | Hot water system comprising a heat source and a tank including a phase change material |
| CN103090459A (en) * | 2013-03-13 | 2013-05-08 | 兰州理工大学 | Efficient temperature stratification heat exchange energy storage water tank with internally arranged phase change thermal storage materials |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106766276A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106766276B (en) | Efficient heat storage water tank capable of utilizing phase change materials in layered mode and design method thereof | |
| CN201662258U (en) | Solar phase-change heat reservoir | |
| US20100127000A1 (en) | Energy saving component | |
| CN206583343U (en) | A kind of jacket type multi-channel phase-change heat-storing device | |
| US20190011147A1 (en) | Modular assembly for a storage device or battery | |
| GB2510375A (en) | Hot water system comprising a heat source and a tank including a phase change material | |
| CN109654735A (en) | A kind of phase transition heat accumulation unit | |
| CN105716465A (en) | Energy storage system with dual-temperature phase change function | |
| Pasupathy et al. | Phase Change Material Based ThermalStorage for Energy Conservation inBuilding Architecture | |
| CN112013448A (en) | Phase change box and solar energy directional water inlet and outlet step phase change heat storage device | |
| CN109282395A (en) | Phase-change accumulation energy floor radiation refrigeration heating system based on photovoltaic heat pump driving | |
| CN2910066Y (en) | Phase-change thermal storage thermos bottle | |
| CN110374291A (en) | Spliced bilayer phase-transition heat-storage cold-storage floor | |
| CN110332723A (en) | A kind of twin-stage annulus deflector type solar energy phase transition energy storage device | |
| CN109367156A (en) | A kind of building energy conservation phase-change accumulation energy cellular board and preparation method | |
| CN106123337A (en) | A kind of energy storing electric water heater | |
| CN104634152A (en) | Energy storage apparatus | |
| CN109028268B (en) | Electric heating type phase change energy storage floor embedded with ventilating duct | |
| CN205403561U (en) | Storage system with two temperature phase transitions | |
| CN106152565A (en) | Cistern free solar vacuum-tube water heater | |
| CN207113684U (en) | Warming solar energy system based on fume afterheat phase transition heat accumulation unit | |
| CN210980405U (en) | Two-stage circular ring baffling type solar phase change energy storage device | |
| CN214470289U (en) | Water storage module enclosure structure with enhanced heat preservation and heat insulation | |
| CN207350951U (en) | A kind of laminate solar photo-thermal device | |
| CN204931442U (en) | A kind of wall construction of insulation utensil of lowering the temperature and cooling heat preservation bowl |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: An efficient heat storage water tank with layered utilization of phase change materials and its design method Granted publication date: 20200310 Pledgee: Changde Finance Guarantee Co.,Ltd. Pledgor: ZHENENGHE (HUNAN) NEW ENERGY Co.,Ltd. Registration number: Y2024980002410 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |