CN104141980A - Cooling-heating-integrated double-capillary-tube-layer phase-change energy storage floor terminal device and application system - Google Patents
Cooling-heating-integrated double-capillary-tube-layer phase-change energy storage floor terminal device and application system Download PDFInfo
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Abstract
The invention relates to a cooling-heating-integrated double-capillary-tube-layer phase-change energy storage floor terminal device and an application system. The cooling-heating-integrated device combining a traditional capillary tube radiant cooling/heating with the phase-change energy storage technology comprises a ground source heat pump, a water distributor, a water collector, a solar heat collector, an auxiliary electric heater and an energy storage floor. The energy storage floor comprises a floor surface layer, a concrete layer, a heat storage phase-change material layer, a cement mortar screeding layer, a cool storage phase-change material layer, a reflecting film and an insulating layer from top to bottom, wherein the heat storage phase-change material layer is used for storing heat at night in winter, the cement mortar screeding layer is used for separating the heat storage phase-change material layer from the cool storage phase-change material layer and facilitates laying of the phase-change material layers, the cool storage phase-change material layer is used for storing cool at night in summer, the reflecting film is used for reflecting and blocking heat to decrease heat exchange between the cool storage phase-change material layer and the insulating layer, and the insulating layer is made of materials low in heat conductivity and small in density and used for further decreasing heat loss of floor structural layers. Capillary tubes are laid in the heat storage phase-change material layer and the cool storage phase-change material layer to be used for supplying hot water and cool water respectively.
Description
Technical field
The present invention is a kind of by traditional capillary radiation cooling/warm integrated end equipment and application system combining with phase-changing energy-storing technology, belongs to building heating, air-conditioning new technology category, building energy optimization utilization and energy accumulating technique field.Be particularly related to a kind of structural design of novel energy storage floor.
Background technology
Floor radiant cooling/warm developing into today, all constantly ripe from theoretical research or practical implementation, obtained huge development.Capillary floor radiant system is as the novel air-conditioning pattern of low-temperature water heating, high temperature cold water, better the environment of Creating Comfort, improve indoor air quality, and meet energy-conservation developing direction.And along with the development of global economy, countries in the world are increasing exponentially to the consumption of the energy.River hundred million academicians once write articles and pointed out that China's building terminal energy consumption in 2004 accounted for 25.5% of Chinese society total energy consumption.In building energy consumption, largest portion is air-conditioning and heating energy consumption, accounts for 40%～50% of building total energy consumption, and the energy consumption that how to reduce this aspect becomes the most important thing.In order to address this problem, the Chinese government has put into effect " time-of-use tariffs policy ", and advocates energetically innovation and development valley power consumption Energy Saving Industry.
From above discussion, on the one hand, growth in the living standard makes people have higher requirement to the comfortableness of living environment.On the other hand, people have also caused more energy consumption and larger electric power peak-valley difference when pursuing more comfortable living environment.Energy accumulating technique is considered to a kind of effective means that solves the two contradiction.Latent heat accumulator also claims phase-changing energy-storing, is the most effective accumulation of energy mode, thereby the conversion of medium by gas, solid, liquid three-phase absorbs or emit a large amount of heat energy.It can absorb or discharge a large amount of heats in isothermal or very little temperature range.This is also the emphasis of energy accumulating technique research.Radiation cooling/warm is combined with phase-changing energy-storing technology, utilizes the cold-storage/accumulation of heat of night dip electricity, discharge by day the energy that holds and freeze or the pattern of heating is a kind of significant trial for room provides.
Summary of the invention
Technical problem: the object of the present invention is to provide and a kind ofly can efficiently utilize trough-electricity, floor radiant cooling/warm is combined with capillary, phase-changing energy-storing technology, ground source heat pump technology, thereby set up the double-deck capillary phase-change energy storage floor end equipment of cold-hot integratedization and the application system of energy saving economy.
Technical scheme: in this programme, design the double-deck capillary phase-change energy storage floor of a kind of cold-hot integratedization end equipment, energy storage floor in this device adopts the phase-change material of two kinds of phase transition temperatures, be used for solving needed phase transition temperature inconsistence problems under heating and air-conditioner energy-accumulation operating mode, be used for respectively storing heat night in winter and store cold night in summer, then discharge to room by day.At night dip electricity price period (24:00～8:00), the operation of system source pump, this bilayer phase-change material is used for storing in the winter time heat and stores cold summer; Peak-trough electricity period (8:00～18:00) by day, compressor emergency shutdown, phase-change material release heat or cold are to room heating or cooling.Compare during without phase-change material layers with floor radiant system, the use of phase-change material can reduce the hot-fluid fluctuation of floor surface, and can improve thermal discharge and the let cool amount of floor radiant system in the peak load period.
Floor panel structure as shown in Figure 1.Each layer of energy storage floor of this end equipment is respectively floor covering, concrete layer, heat accumulating phase change material layer, cement mortar screeding layer, cold-storage phase-change material layers, reflectance coating, heat-insulation layer and floor construction layer from top to bottom.In heat accumulating phase change material layer, lay the recuperation layer capillary network for supplying hot water; In cold-storage phase-change material layers, lay for the cold-storage layer capillary network for cold water.
In heat accumulating phase change material layer described in technique scheme and cold-storage phase-change material layers, all lay capillary.During accumulation of heat, recuperation layer capillary Netcom hot water carries out accumulation of heat, and cold-storage layer capillary network can be used as standby.
During technique scheme cold-storage, cold-storage layer capillary Netcom cold water carries out cold-storage, and recuperation layer capillary network can be used as standby.
In technique scheme, heat accumulating phase change material layer is spliced by the accumulation of heat phase transformation module of strip, and accumulation of heat phase transformation module is formed by Metal Packaging by heat accumulating phase change material; Cold-storage phase-change material layers is spliced by the cold-storage phase transformation module of strip, and cold-storage phase transformation module is formed by Metal Packaging by cold-storage phase-change material.
In technique scheme, heat accumulating phase change material layer is on upper strata, and cold-storage phase-change material layers is in lower floor; Heat accumulating phase change material layer and cold-storage phase-change material interlayer are laid cement mortar screeding layer.
In technique scheme, recuperation layer capillary network is around in the gap being laid on by the heat accumulating phase change material layer of accumulation of heat phase transformation module composition, and cold-storage layer capillary network is around in the gap being laid on by the cold-storage phase-change material layers of cold-storage phase transformation module composition.
In technique scheme, the phase transition temperature of heat accumulating phase change material layer phase-change material is 32～38 degree; The phase transition temperature of cold-storage phase-change material layers phase-change material is 16～20 degree.
In this device, why heat accumulating phase change material layer is placed on to upper strata, cold-storage phase-change material layers is placed on lower floor, is to consider in process of cool, if floor surface temperature is too low, may occur dewfall phenomenon.So cold-storage phase-change material is placed on to lower floor, increases thermal conduction resistance above, the protective effect that stored for cold, also has cushioning effect to the release of cold, to reduce the risk of dewfall.
The accumulation of energy ability problem on the low side that may occur during accumulation of energy for phase-changing energy-storing hot water heating floor, end adopts double-deck capillary.Capillary is compared with conventional water hose, has heat exchange area large, and heat exchange is even, and supply water temperature requires low advantage, and comfortable safety is energy-efficient.Capillary is imbedded in phase-change material layers, fully contact with phase-change material, increase heat exchange area, complete to guarantee phase-change material phase transformation, accumulation of energy ability makes full use of, and the capillary of another layer also can be used as standby simultaneously, when load variations larger, or accumulation of energy time requirement is when reduce, and also can carry out auxiliary energy-storage by the capillary of another layer, accelerates accumulation of energy speed.
The application system of the double-deck capillary phase-change energy storage floor of cold-hot integratedization end equipment, comprises earth source heat pump, water knockout drum, water collector and energy storage floor; System arranges earth source heat pump, can make full use of low-grade heat source, and described ground source heat delivery side of pump is connected with the input of energy storage floor with water knockout drum by valve successively, and the input of earth source heat pump is connected with the output of energy storage floor with water collector by valve successively.
Meanwhile, system also has solar thermal collector, inadequate in the amount of stored heat at night, or day load is when larger, in the daytime auxiliary heat supplying; The output of described solar thermal collector is connected with the input of energy storage floor with water knockout drum by valve successively, and the input of solar thermal collector is connected with the output of energy storage floor with water collector by valve successively.
Can coordinate electrical auxiliary heater if desired, also there is electrical auxiliary heater; One end of described electrical auxiliary heater is connected to the output of solar thermal collector by valve, the other end is connected to the input of energy storage floor by water knockout drum.
Beneficial effect: the invention has the beneficial effects as follows:
1. capillary floor radiant cooling/warm is combined with phase-changing energy-storing technology, can make full use of night dip electricity price and store energy, by day during peak-trough electricity for indoor cooling/warm, not only can realize like this electrical network " peak load shifting ", solve the problem of electric power peak-valley difference, but also can save operation power expense, do not lose again general capillary radiation cooling/warm advantage simultaneously;
2. double-deck phase-change material energy-storage type floor is laid immediately on capillary separately in heat accumulating phase change material layer and cold-storage phase-change material layers, compact conformation, reduced the energy loss in hot and cold water course of conveying, reduced interacting between cold-storage phase-change material layers and heat accumulating phase change material layer, guarantee to utilize high temperature cold water and low-temperature water heating accumulation of energy abundant, and capillary is compared with conventional water hose, there is heat exchange area large, heat exchange is even, supply water temperature requires low advantage, comfortable safety, energy-efficient;
3. under the lower or higher environment of temperature, cooling and heating load raises or during accumulation of energy time decreased, and we can also utilize the capillary auxiliary energy-storage in another layer or do standbyly, and reliability strengthens;
4. system adopts earth source heat pump as Cooling and Heat Source, can use efficiently low-grade shallow layer geothermal energy as Cooling and Heat Source, and this has very great help to lowering building energy consumption.The effect with energy-saving and emission-reduction.
5. the double-deck capillary phase-change energy storage floor of a set of cold-hot integratedization end equipment can also can, for summer cooling, install simply flexibility and reliability for heat supply in winter.
Accompanying drawing explanation
Fig. 1 is the structural representation of the double-deck capillary phase-change energy storage floor of cold-hot integratedization of the present invention end equipment.
Fig. 2 is the application system flow chart of the double-deck capillary phase-change energy storage floor of cold-hot integratedization of the present invention.
Fig. 3 is that double-deck capillary phase-change energy storage floor of the present invention is laid schematic diagram.
Fig. 4 is the top view of Fig. 3;
Fig. 5 is the axonometric drawing of Fig. 3;
Fig. 6 is the schematic diagram of accumulation of energy at night of the present invention;
Fig. 7 is the schematic diagram of exoergic on daytime of the present invention.
Attached number in the figure is: 1. floor covering, 2. concrete layer, 3. heat accumulating phase change material layer, 4. cement mortar screeding layer, 5. cold-storage phase-change material layers, 6. reflectance coating, 7. heat-insulation layer, 8. floor construction layer, 9. recuperation layer capillary network, 10. cold-storage layer capillary network, 11. earth source heat pumps, 12. water knockout drums, 13. water collectors, 14. solar thermal collectors, 15. electrical auxiliary heaters, 16. energy storage floors, 17. accumulation of heat phase transformation modules, 18. cold-storage phase transformation modules.
The specific embodiment
The double-deck capillary phase-change energy storage floor end equipment of cold-hot integratedization of the present invention and application system, as shown in Figure 1, the general flow chart of its system as shown in Figure 2, describes in detail below in conjunction with accompanying drawing.
See Fig. 1 to Fig. 5, this each layer of device floor is respectively floor covering 1, concrete layer 2, heat accumulating phase change material layer 3, cement mortar screeding layer 4, cold-storage phase-change material layers 5, reflectance coating 6, heat-insulation layer 7 and floor construction layer 8 from top to bottom.Phase-change material adopts strip Metal Packaging, between 5 layers of heat accumulating phase change material layer 3 and cold-storage phase-change materials, lays one deck cement mortar screeding layer 4, has both solved the problem of phase transition process state variation, has strengthened again the thermal conductivity of material.The phase transition temperature of heat accumulating phase change material layer 3 is at 32～38 degree, and 5 phase transition temperatures of cold-storage phase-change material layers are at 16～20 degree; In heat accumulating phase change material layer 3, lay one deck recuperation layer capillary network 9; In cold-storage phase-change material layers 5, lay one deck cold-storage layer capillary network 10.Recuperation layer capillary network 9 and cold-storage layer capillary network 10, around being embedded in the gap of strip accumulation of heat phase transformation module 17 and cold-storage phase transformation module 18, make it contact fully with phase-change material.With aluminium foil or other highly reflective materials, make reflectance coating 6, play the effect of reflection and trap heat, reduce the heat exchange of phase-change material layers and heat-insulation layer.Heat-insulation layer 7, low by thermal conductivity, the material that density is little is incubated, and further reduces the heat loss to lower floor.
Operation principle of the present invention and workflow are as follows:
See Fig. 6 and Fig. 7, for summer condition: during night dip electricity, be generally late 24:00 to 8:00 in morning.Open earth source heat pump 11 units, required cold water is provided, enter indoor water knockout drum 12, then enter cold-storage layer capillary network 10 in floor, cooling cold-storage phase-change material layers 5, when the temperature of cold-storage phase-change material 5 drops to its phase transition temperature, phase-change material starts to solidify, according to Transformation Principle, solidify heat release, cold just stores in cold-storage phase-change material layers 5 like this; And by day during peak-trough electricity, earth source heat pump 11 units quit work, the no longer logical cold water of cold-storage layer capillary network 10 provides cold, temperature bottom out in indoor temperature and floor layer, when the temperature of cold-storage phase-change material layers 5 rises to its transformation temperature, phase-change material starts to melt, absorb heat simultaneously, the relatively low phase-change material layers of temperature is upwards released cold, is the indoor cold that provides, and indoor temperature is reduced or rise and slow down.
For winter condition: during night dip electricity, be generally late 24:00 to 8:00 in morning.Open earth source heat pump unit 11, required hot water is provided, enter indoor water knockout drum 12, then enter recuperation layer capillary network 9 in floor, heating heat accumulating phase change material layer 3, when the temperature of heat accumulating phase change material layer 3 rises to its phase transition temperature, phase-change material starts to melt, according to Transformation Principle, melt heat absorption, heat just stores in heat accumulating phase change material layer 3 like this; And by day during peak-trough electricity, earth source heat pump 11 units quit work, the no longer logical hot water of recuperation layer capillary network 9 provides heat, in indoor temperature and floor layer, temperature starts to decline, and when the temperature of heat accumulating phase change material layer 3 drops to its transformation temperature, phase-change material starts to solidify, emit heat simultaneously, the phase-change material layers that temperature is the relatively high heat release that makes progress, is the indoor heat that provides, and indoor temperature is raise or decline to slow down.In addition due to winter refrigeration duty relatively large, whole system also arranges solar energy heat collection equipment, to refrigeration duty is larger by day, while storing shortage of heat, can do standby night.When daytime in winter, indoor temperature was not enough, solar thermal collector 14(can be coordinated to electrical auxiliary heater 15 if desired) hot water of heating passes in water knockout drum 12, by recuperation layer capillary network 9 directly to the indoor heat that provides.
This device has utilized low-grade heat source fully, and while and phase-changing energy-storing combine, and have played good peak load shifting, the effect of energy-saving and emission-reduction.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the double-deck capillary phase-change energy storage floor of cold-hot integratedization end equipment, is characterized in that: have energy storage floor (16); Described energy storage floor (16) is respectively floor covering (1), concrete layer (2), heat accumulating phase change material layer (3), cement mortar screeding layer (4), cold-storage phase-change material layers (5), reflectance coating (6), heat-insulation layer (7) and floor construction layer (8) from top to bottom; In heat accumulating phase change material layer (3), lay the recuperation layer capillary network (9) for supplying hot water; In cold-storage phase-change material layers (5), lay for the cold-storage layer capillary network (10) for cold water.
2. according to the double-deck capillary phase-change energy storage floor of cold-hot integratedization claimed in claim 1 end equipment, it is characterized in that: in described heat accumulating phase change material layer (3) and cold-storage phase-change material layers (5), all lay capillary network; During accumulation of heat, the logical hot water of recuperation layer capillary network (9) carries out accumulation of heat, and cold-storage layer capillary network (10) can be used as standby.
3. according to the double-deck capillary phase-change energy storage floor of cold-hot integratedization claimed in claim 1 end equipment, it is characterized in that: during cold-storage, the logical cold water of cold-storage layer capillary network (10) carries out cold-storage, and recuperation layer capillary network (9) can be used as standby.
4. according to the double-deck capillary phase-change energy storage floor of the cold-hot integratedization described in claim 1 or 2 or 3 end equipment, it is characterized in that: heat accumulating phase change material layer (3) is spliced by the accumulation of heat phase transformation module (17) of strip, and accumulation of heat phase transformation module (17) is formed by Metal Packaging by heat accumulating phase change material; Cold-storage phase-change material layers (5) is spliced by the cold-storage phase transformation module (18) of strip, and cold-storage phase transformation module (18) is formed by Metal Packaging by cold-storage phase-change material.
5. according to the double-deck capillary phase-change energy storage floor of cold-hot integratedization claimed in claim 4 end equipment, it is characterized in that: heat accumulating phase change material layer (3) is on upper strata, and cold-storage phase-change material layers (5) is in lower floor; In the middle of both, lay cement mortar screeding layer (4).
6. according to the double-deck capillary phase-change energy storage floor of cold-hot integratedization claimed in claim 5 end equipment, it is characterized in that: recuperation layer capillary network (9) is around being laid in the gap of the heat accumulating phase change material layer (3) consisting of accumulation of heat phase transformation module (17); Cold-storage layer capillary network (10) is around being laid in the gap of the cold-storage phase-change material layers (5) consisting of cold-storage phase transformation module (18).
7. according to the double-deck capillary phase-change energy storage floor of cold-hot integratedization claimed in claim 1 end equipment, it is characterized in that: the phase transition temperature of heat accumulating phase change material layer (3) phase-change material is 32～38 degree; The phase transition temperature of cold-storage phase-change material layers (5) phase-change material is 16～20 degree.
8. the application system of the double-deck capillary phase-change energy storage floor of cold-hot integratedization end equipment, is characterized in that: comprise earth source heat pump (11), water knockout drum (12), water collector (13) and energy storage floor (16); The output of described earth source heat pump (11) is connected with the input of energy storage floor (16) with water knockout drum (12) by valve successively, and the input of earth source heat pump (11) is connected with the output of energy storage floor (16) with water collector (13) by valve successively.
9. according to the application system of the double-deck capillary phase-change energy storage floor of cold-hot integratedization claimed in claim 8 end equipment, it is characterized in that: also there is solar thermal collector (14); The output of described solar thermal collector (14) is connected with the input of energy storage floor (16) with water knockout drum (12) by valve successively, and the input of solar thermal collector (14) is connected with the output of energy storage floor (16) with water collector (13) by valve successively.
10. according to the application system of the double-deck capillary phase-change energy storage floor of cold-hot integratedization claimed in claim 9 end equipment, it is characterized in that: also there is electrical auxiliary heater (15); One end of described electrical auxiliary heater (15) is connected to the output of solar thermal collector (14) by valve, the other end is connected to the input of energy storage floor (16) by water knockout drum (12).
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| CN105937814B (en) * | 2016-06-15 | 2018-08-21 | 西安建筑科技大学 | A kind of building passive cooling and solar water comprehensive utilization device |
| CN106351356B (en) * | 2016-09-20 | 2019-03-22 | 上海理工大学 | A kind of capillary phase-transition heat-preserving part, building masonry wall and building including it |
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