CN1594192A - Energy storage building material and preparing method thereof - Google Patents
Energy storage building material and preparing method thereof Download PDFInfo
- Publication number
- CN1594192A CN1594192A CN200410041384.8A CN200410041384A CN1594192A CN 1594192 A CN1594192 A CN 1594192A CN 200410041384 A CN200410041384 A CN 200410041384A CN 1594192 A CN1594192 A CN 1594192A
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- Prior art keywords
- accumulation
- energy
- building substrate
- substrate material
- construction
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- 238000000034 method Methods 0.000 title claims description 9
- 239000004566 building material Substances 0.000 title abstract description 4
- 238000004146 energy storage Methods 0.000 title description 20
- 239000000463 material Substances 0.000 claims abstract description 55
- 238000009825 accumulation Methods 0.000 claims abstract description 36
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 claims abstract description 30
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 claims abstract description 15
- 239000005639 Lauric acid Substances 0.000 claims abstract description 14
- 239000000374 eutectic mixture Substances 0.000 claims abstract description 14
- 238000002360 preparation method Methods 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 239000000758 substrate Substances 0.000 claims description 18
- 238000010276 construction Methods 0.000 claims description 17
- 239000002775 capsule Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 239000004567 concrete Substances 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims 2
- 238000002791 soaking Methods 0.000 claims 2
- 238000005470 impregnation Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 239000002131 composite material Substances 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 239000002585 base Substances 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 27
- 230000008859 change Effects 0.000 description 24
- 239000011232 storage material Substances 0.000 description 20
- 230000009466 transformation Effects 0.000 description 9
- 238000004378 air conditioning Methods 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 239000012782 phase change material Substances 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
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- Building Environments (AREA)
Abstract
The present invention relates to an energy accumulation building material, which is the composite of the mixture comprising capric acid and lauric acid, and base building material, the weight ration of the capric acid and the lauric acid is (1-8) : 1. The preparation of the material comprises heating the capric acid and the lauric acid, mixing the two to form an eutectic mixture, and heating the eutectic mixture to complete melting.
Description
One, technical field
The present invention relates to a kind of material of construction and preparation method thereof, particularly a kind of accumulation of energy material of construction and preparation method thereof.
Two, background technology
Energy-conservation and environmental protection are most important problems in the field of energy utilization, and the storage (cold-storage, accumulation of heat) that utilizes the latent heat of phase change of phase change material to carry out energy is an environment-friendly energy-saving technology.Phase change material is in the process that itself undergoes phase transition, and the heat of absorbing environmental (cold) is measured, and emits heat (cold) amount to environment when needed, thereby reaches control ambient temperature and purpose of energy saving.It all has wide practical use in fields such as building energy conservation, sun power utilization, refrigeration air-conditioner, energy recovery.
The material of heat absorption, heat release when condensing when energy storage materials of phase change is a kind of the fusing.Liquid phase-change energy-accumulation material abutment surface tension force remains in the lacunose material of main part.Because latent heat is more much bigger than sensible heat,, can produce very big influence to its heat storage capacity so in material of construction, add a small amount of (weight percent 5-30%) energy storage materials of phase change.
Energy storage materials of phase change commonly used at present mainly comprises inorganics and organism two big classes.Most inorganics energy storage materials of phase change have corrodibility, and have the shortcoming that cold-peace is separated in phase transition process, have influenced its accumulation of energy ability; And the organism energy storage materials of phase change not only corrodibility is little, the shortcoming that almost is not separated in phase transition process, and stable chemical performance, low price.But the low shortcoming of organism energy storage materials of phase change ubiquity thermal conductivity causes that its heat transfer property in the application of energy-storage system is poor, the accumulation of energy utilization ratio is low, thereby has reduced the usefulness of system.
Three, summary of the invention
The objective of the invention is the deficiency that exists at above-mentioned energy-accumulation material and a kind of accumulation of energy material of construction that provides and preparation method thereof, it is that organic phase-change energy-accumulation material and suitable building substrate material is compound, reinforcement is held, the heat transfer of exothermic process, and solves the leakage and the etching problem of energy-accumulation material liquid phase.
Technical scheme of the present invention is: a kind of accumulation of energy material of construction, and mixture and the building substrate material be made up of capric acid, lauric acid are composited, and capric acid and lauric acid are pressed mass ratio (1～8): 1.
Wherein, capric acid, molecular formula is C
10H
20O
2, molecular weight is 172.26, zero pour 〉=29 ℃, and refractive index is 1.4275-1.4295.
Lauric acid, molecular formula are C
12H
24O
2, molecular weight is 200.32, melting range is 41-45 ℃.
Preparation method of the present invention is heated to 60-70 ℃ respectively with capric acid and lauric acid, treat that they melt fully after, mix to form a kind of capric acid and lauric eutectic mixture (energy storage materials of phase change) by above-mentioned proportional range; Again this eutectic mixture is heated to complete melted state, is compound in the building substrate material, form a kind of accumulation of energy material of construction.
Energy storage materials of phase change and building substrate material composite methods have following two kinds:
1, ordinary gypsum board, concrete slab and cystose etc. are incubated 3-5 hour under 40 ± 5 ℃ temperature, immersion fills in the storage tank of energy storage materials of phase change then, soaks 5～10 minutes (size on plate is decided) under 40 ± 5 ℃ temperature.Before and after the dipping all plates are weighed, to determine the specific absorption of energy storage materials of phase change.
2, energy storage materials of phase change is enclosed in the minigel, then these minigels are filled into or the hollow concrete fragment of brick of packing in, make the concrete building material that contains energy storage materials of phase change.
The working mechanism of the present invention in air-conditioned room is as follows: when air-conditioned room carries out refrigeration cool-down, if the refrigeration duty in room is less than air conditioning unit cold, the temperature in room will reduce, when the temperature in the room is reduced to the transformation temperature that is lower than energy-accumulation material, energy-accumulation material begins to solidify heat release, and cold unnecessary in the room is stored.When air conditioning unit shutdown, the temperature in the room begins slowly to go up, and when temperature in the room rose to the transformation temperature of energy-accumulation material, energy storage materials of phase change began heat absorption fusing, keeps in the room temperature in certain scope.As a same reason, when air-conditioned room heats intensification, if the thermal load in room is less than air conditioning unit heating capacity, the temperature in room will raise, when the temperature in the room is elevated to the transformation temperature that is higher than energy-accumulation material, energy-accumulation material begins the fusing heat absorption, and heat unnecessary in the room is stored.When air conditioning unit shutdown, the temperature in the room begins slowly to descend, and when temperature in the room dropped to the transformation temperature of energy-accumulation material, energy storage materials of phase change began to solidify heat release, keeps in the room temperature in certain scope.
At electrical network low ebb time at night (also be air conditioner load very low time simultaneously), the air conditioning unit refrigeration and cold is stored in the energy storage materials of phase change of can starting shooting, energy-accumulation material is frozen into solid because of storing cold; Treat electrical network peak Elapsed Time on daytime (also being air conditioner load peak times simultaneously), cold is discharged the needs that satisfy the peak air conditioner load again, energy-accumulation material then is fused into liquid phase by solid phase.Like this, air conditioning unit most of power consumption occurs in the low power consumption phase at night, thereby realizes power load " peak load shifting ".As a same reason, electrical network low ebb time at night (also being the very low time of air conditioner load simultaneously), air conditioning unit can the start heats and heat is stored in the energy storage materials of phase change, and energy-accumulation material is fused into liquid because of store heat; Treat electrical network peak Elapsed Time on daytime (also being air conditioner load peak times simultaneously), again heat release is come out to satisfy the needs of peak air conditioner load, energy-accumulation material then is frozen into solid phase by liquid phase.
The present invention compared with prior art, its remarkable advantage is: the temperature and humidity that 1, helps to make indoor maintenance needs, and can balanced or partly eliminate heating and air conditioner load, and perhaps peak load is transferred to low ebb, therefore can reduce constructure heating and air conditioning energy consumption.2, can absorb and store some low temperature heat energies that buildings obtains effectively, in the daytime absorb from the external world and be released to night such as the heat of environment and heat that solar energy system is collected daytime etc. as industrial waste heat, the buildings of people and machine liberated heat, recyclable utilization, slow release is come out then, therefore can adjust these energy in the temporal discordance of Supply and Demand.3, can improve the thermal inertia of buildings, the indoor temperature change generated in case amplitude is reduced, therefore can make heating and conditioning unit reduce on-off frequency, thereby the operational efficiency of these equipment is improved.In addition, owing to the raising of buildings thermal inertia makes heating and air conditioner load relatively more balanced, promptly reduce peak load.Like this, just less heating and conditioning unit can be selected for use, equipment purchasing and maintenance cost can be reduced thus the same building thing.4, nontoxic, the non-corrosiveness of this cool storage material did not have the cold-peace phenomenon of phase separation, and the phase transformation volume change is little, stable performance, good reproducibility, but life-time service.5, this cool storage material preparation method is simple, and the transformation temperature scope can be regulated as required, has better flexibility.6, in building energy saving field, compound by materials for wall and energy-accumulation material, can increase the temperature regulation ability of buildings, reach energy-conservation and comfortable purpose.Attemperation (18-25 ℃) in transformation temperature of this energy-accumulation material (19-24 ℃) and the room matches, and latent heat of phase change higher (120-150 kJ/kg) did not have the cold-peace phenomenon of phase separation, nontoxic, non-corrosiveness, stable performance, good reproducibility.
Four, description of drawings
Accompanying drawing is transformation temperature and the latent heat of phase change synoptic diagram (recording with differential scanning calorimeter) that is mixed into eutectic mixture after capric acid of the present invention, the lauric acid heat fused.
Five, embodiment
Embodiment 1: capric acid and lauric acid heat fused after are mixed into eutectic mixture by mass ratio at 2: 1, and accompanying drawing is depicted as its transformation temperature and latent heat of phase change (recording with differential scanning calorimeter).Its temperature of fusion is 23.891 ℃ after measured, and the latent heat of fusion is 136.215 kJ/kg, and temperature of solidification is 19.596 ℃, and latent heat of solidification is 135.951 kJ/kg.
Again this eutectic mixture is heated to complete melted state, is compound in the building substrate material.In the preparation process, ordinary gypsum board is incubated 5 hours under 40 ± 5 ℃ temperature, immersion fills in the storage tank of energy storage materials of phase change then, soaks 8 minutes under 40 ± 5 ℃ temperature.Before and after the dipping all plates are weighed, to determine the specific absorption of energy storage materials of phase change in the building substrate material.The average absorption rate of this accumulation of energy plasterboard is 27.5%.
Embodiment 2: capric acid and lauric acid heat fused after are mixed into eutectic mixture by mass ratio at 1: 1, and the building substrate material is a concrete slab, earlier eutectic mixture are enclosed in the capsule, then capsule is filled into or the building substrate material of packing in.
Embodiment 3: capric acid and lauric acid heat fused after are mixed into eutectic mixture by mass ratio at 8: 1, and the building substrate material is a cystose.All the other are with embodiment 1.
Claims (9)
1, a kind of accumulation of energy material of construction, mixture and the building substrate material be made up of capric acid, lauric acid are composited, and capric acid and lauric acid are pressed mass ratio (1～8): 1.
2, accumulation of energy material of construction according to claim 1 is characterized in that described impregnation mixture is in the building substrate material.
3, accumulation of energy material of construction according to claim 1 is characterized in that described mixture is filled in the building substrate material.
4, accumulation of energy material of construction according to claim 3 is characterized in that capsule is filled in the building substrate material in the described mixture inclosure capsule.
5,, it is characterized in that described building substrate material is plasterboard, concrete slab or cystose according to claim 1,2 or 3 described accumulation of energy material of construction.
6, the preparation method of the described accumulation of energy material of construction of claim 1 is characterized in that this method may further comprise the steps:
(1) with after capric acid and the lauric acid difference heat fused, forms eutectic mixture by described mixed;
(2) described eutectic mixture is heated to melted state after, be compound in the building substrate material, promptly form the accumulation of energy material of construction.
7, the preparation method of accumulation of energy material of construction according to claim 6 is characterized in that described complex method is in step (2): with the insulation of building substrate material, put into the storage tank that fills eutectic mixture then and soak earlier.
8, the preparation method of accumulation of energy material of construction according to claim 7 is characterized in that the temperature of building substrate material insulation is 40 ± 5 ℃, and soaking time is 3-5 hour, and soaking temperature is 40 ± 5 ℃.
9, the preparation method of accumulation of energy material of construction according to claim 6 is characterized in that described complex method is in step (2): earlier eutectic mixture is enclosed in the capsule, then capsule is filled into or the building substrate material of packing in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410041384.8A CN1268711C (en) | 2004-07-15 | 2004-07-15 | Energy storage building material and preparing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410041384.8A CN1268711C (en) | 2004-07-15 | 2004-07-15 | Energy storage building material and preparing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1594192A true CN1594192A (en) | 2005-03-16 |
| CN1268711C CN1268711C (en) | 2006-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200410041384.8A Expired - Fee Related CN1268711C (en) | 2004-07-15 | 2004-07-15 | Energy storage building material and preparing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1268711C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100467565C (en) * | 2005-05-26 | 2009-03-11 | 同济大学 | Method of preparing organic molecular alloy phase change energy storage material |
| CN102372475A (en) * | 2010-08-09 | 2012-03-14 | 袁艳平 | Proportioning and preparing method of novel phase-change energy storage gypsum board |
| CN102417340A (en) * | 2011-08-31 | 2012-04-18 | 南京工业大学 | Gypsum-based phase change energy storage polymer insulation mortar and preparation method thereof |
| CN103555280A (en) * | 2013-10-21 | 2014-02-05 | 郑州大学 | Organic phase change thermal storage material and production method thereof |
| CN110373163A (en) * | 2019-08-01 | 2019-10-25 | 西安交通大学城市学院 | A kind of air energy cold-storage phase-change material and preparation method thereof |
-
2004
- 2004-07-15 CN CN200410041384.8A patent/CN1268711C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100467565C (en) * | 2005-05-26 | 2009-03-11 | 同济大学 | Method of preparing organic molecular alloy phase change energy storage material |
| CN102372475A (en) * | 2010-08-09 | 2012-03-14 | 袁艳平 | Proportioning and preparing method of novel phase-change energy storage gypsum board |
| CN102417340A (en) * | 2011-08-31 | 2012-04-18 | 南京工业大学 | Gypsum-based phase change energy storage polymer insulation mortar and preparation method thereof |
| CN102417340B (en) * | 2011-08-31 | 2013-04-10 | 南京工业大学 | Gypsum-based phase change energy storage polymer insulation mortar and preparation method thereof |
| CN103555280A (en) * | 2013-10-21 | 2014-02-05 | 郑州大学 | Organic phase change thermal storage material and production method thereof |
| CN103555280B (en) * | 2013-10-21 | 2015-10-07 | 郑州大学 | A kind of Organic phase change thermal storage material and production method thereof |
| CN110373163A (en) * | 2019-08-01 | 2019-10-25 | 西安交通大学城市学院 | A kind of air energy cold-storage phase-change material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1268711C (en) | 2006-08-09 |
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