CN111043650A - Carbon fiber heat supply method and device based on phase change heat storage - Google Patents
Carbon fiber heat supply method and device based on phase change heat storage Download PDFInfo
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- 239000004917 carbon fiber Substances 0.000 title claims abstract description 325
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 325
- 238000005338 heat storage Methods 0.000 title claims abstract description 231
- 230000008859 change Effects 0.000 title claims abstract description 150
- 238000000034 method Methods 0.000 title claims abstract description 33
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- 238000004321 preservation Methods 0.000 claims abstract description 101
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- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 claims description 3
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
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- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention provides a carbon fiber heat supply device based on phase change heat storage, which comprises a carbon fiber collector, a carbon fiber controller and a carbon fiber heat supply unit, wherein the carbon fiber heat supply unit comprises a phase change heat storage heat preservation layer formed by mixing concrete and a phase change heat storage material, a carbon fiber heating layer formed by carbon fiber wires, a grounding shielding module for grounding shielding, a reflecting layer for reflecting heat and a heat insulation layer for heat insulation. According to the invention, a multi-level carbon fiber heat supply unit and a phase change heat storage technology are adopted, the carbon fiber heat supply technology, the phase change heat storage technology and the intelligent control technology are combined through intelligent control of the novel carbon fiber controller, the phase change heat storage can keep small temperature change in the heat storage process, meanwhile, the heat release can be slowly carried out, in addition, accurate phase change heat storage and heat supply control are realized, the phase change heat storage is carried out in a selected time period, the advantage of peak-valley electricity price is utilized, and the cost is saved.
Description
Technical Field
The invention relates to the field of heat supply and energy conservation, in particular to a carbon fiber heat supply method and device based on phase change heat storage.
Background
With the development of economy and the improvement of the living standard of people, the demand of society on electric energy is continuously increased, particularly, the peak-valley difference of each large power grid is gradually increased, a large amount of electric power loss is caused due to the fact that the electricity consumption at night is low, various valley electricity price policies are disputed by governments of various regions, electricity consumption of users at the valley time is attracted by changing the electricity price at the valley time, the electric power loss is reduced, the electric power load at the peak time is reduced, and therefore the purposes of peak clipping, valley filling, peak shaving and capacity expansion are achieved. Therefore, the electric energy is used for heating, so that the valley electricity can be fully utilized, the loss of the electric power can be reduced, and the economical heating can be realized.
In traditional central heating, heating is carried out by adopting a unified pipeline, and the heat distribution is uneven due to the difference of house structures. In the same building, because the heat dissipation is fast, the heating temperature often does not reach the standard for the side household, the top household and the like, and the temperature of the middle household, the sunny household and the like is too high, the phenomenon of heat release by windowing often occurs, so that a great amount of energy is wasted. The traditional heat supply and heat storage cannot realize accurate quantitative control. In addition, the traditional heat storage causes the temperature to be greatly increased in the heat storage stage, and the heat supply effect is influenced. Therefore, it is an urgent technical problem to be solved by those skilled in the art to achieve better energy-saving heating.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a carbon fiber heat supply method and device based on phase change heat storage, and the technical problems that heat supply cannot be intelligently controlled and the temperature is greatly increased in a heat storage stage in the prior art are solved.
The invention provides a carbon fiber heat supply method based on phase change heat storage, which comprises a carbon fiber collector, a carbon fiber controller and a carbon fiber heat supply unit, wherein the carbon fiber controller is connected with the carbon fiber heat supply unit, the carbon fiber collector is connected with the carbon fiber controller, the carbon fiber collector collects working parameters of the carbon fiber heat supply unit through the carbon fiber controller, the carbon fiber heat supply unit comprises a phase change heat storage heat preservation layer formed by mixing concrete and a phase change heat storage material, a carbon fiber heating layer formed by carbon fiber wires, a grounding shielding module used for grounding shielding, a reflecting layer reflecting heat and a heat insulation layer used for heat insulation, the phase change heat storage heat preservation layer is formed by mixing concrete and phase change material particles, and the carbon fiber heating layer is arranged in the phase change heat storage heat preservation layer or arranged below the phase change heat storage heat preservation layer and is mixed with the phase change heat storage heat preservation layer The phase change heat storage heat preservation in close contact with, the reflector layer the heat insulation layer is located the phase change heat storage heat preservation with the lower part on carbon fiber heating layer, the reflector layer will the phase change heat storage heat preservation with the heat that the carbon fiber heating layer upwards reflects in order to prevent the heat to scatter and disappear downwards, ground shield module connects the carbon fiber heating layer and carries out ground protection, the reflector layer is in on the heat insulation layer, the phase change heat storage heat preservation absorbs the heat formation sensible heat and the phase change latent heat on carbon fiber heating layer are stored, including following step:
obtaining the temperature: setting an average temperature t1 required to be maintained for heat supply, and acquiring an average outdoor daily temperature t2 of the next day;
acquiring the heat consumption of a heat supply space: acquiring the heat consumption Q of a heat supply space;
heat storage: controlling the carbon fiber heating layer to heat to form sensible heat and latent phase change heat for heat storage according to the heat consumption Q and the heating power W of the carbon fiber heating layer in the heat storage time period;
intelligent heat supply: and adjusting the heat supply according to the set heat supply required holding temperature t1 and the real-time temperature t5 of heat supply when heat is released through heat storage of the phase-change heat storage heat preservation layer, and if the real-time temperature t5 of heat supply is less than the set holding temperature t1 of heat supply, controlling the carbon fiber heating layer to heat for supplementing heat supply.
As a further improvement of the invention, the heat consumption Q further comprises subtracting the heat gained by the space.
As a further improvement of the invention, the heat consumption Q also comprises one or more of heat loss of space heat transfer and heat loss of air ventilation.
As a further improvement of the invention, the heat loss of the space heat transfer is determined according to the area of the heat transfer surface, the temperature of the two surfaces of the heat transfer surface and the heat transfer coefficient.
The invention provides a carbon fiber heat supply device based on phase change heat storage, which comprises a carbon fiber collector and a carbon fiber heat supply energy-saving unit, wherein the carbon fiber heat supply energy-saving unit comprises a carbon fiber controller and a carbon fiber heat supply unit, the carbon fiber controller is connected with the carbon fiber heat supply unit, the carbon fiber collector is connected with the carbon fiber controller, the carbon fiber collector collects working parameters of the carbon fiber heat supply unit through the carbon fiber controller, the carbon fiber heat supply unit comprises a phase change heat storage heat preservation layer formed by mixing concrete and a phase change heat storage material, a carbon fiber heating layer formed by carbon fiber wires, a grounding shielding module used for grounding shielding, a reflecting layer reflecting heat and a heat insulation layer used for heat insulation, the phase change heat storage heat preservation layer is formed by mixing concrete and phase change material particles, and the carbon fiber heating layer is arranged in the phase change heat storage heat preservation layer or arranged in The heat preservation below and with phase change heat storage heat preservation in close contact with, the reflection stratum the heat insulation layer is located phase change heat storage heat preservation with the lower part on carbon fiber heating layer, the reflection stratum will phase change heat storage heat preservation with the heat on carbon fiber heating layer upwards reflects in order to prevent the heat from scattering and disappearing downwards, ground shield module connects carbon fiber heating layer and ground protection, the reflection stratum is in on the heat insulation layer, phase change heat storage heat preservation absorbs the heat on carbon fiber heating layer forms sensible heat and phase change latent heat and keeps up, carbon fiber controller is including setting up the module, acquireing outdoor temperature acquisition module, the intelligent heat supply module of outdoor day average temperature, heat consumption acquisition module, set up the module and set for the holding temperature t1, the heat storage time quantum of heat supply, outdoor temperature acquisition module acquires outdoor day average temperature t2 of next day, the heat consumption obtains the module and acquires heat consumption Q, carbon fiber controller in the heat accumulation time quantum according to heat consumption Q with the heating power W control on carbon fiber heating layer the carbon fiber heating layer heating forms sensible heat and phase transition latent heat and carries out the heat accumulation, intelligence heat supply module is according to the temperature t1 that keeps that sets up the heat supply space and through the thermal real-time temperature t5 of heat accumulation release, if the real-time temperature t5 of supplying heat is less than the temperature t1 that keeps in the heat supply space that sets up, then carbon fiber controller control the carbon fiber heating layer generates heat and supplements the heat supply.
As a further improvement of the present invention, the ground shielding module is a ground shielding layer, and the ground shielding layer is disposed between the reflective layer and the carbon fiber heating layer.
As a further improvement of the invention, the carbon fiber heating layer is embedded in the phase change heat storage insulating layer or clings to the bottom surface of the phase change heat storage insulating layer.
As a further improvement of the invention, the reflective layer is a reflective coating, and the reflective coating is coated on the heat insulating layer; or the reflecting layer is a metal reflecting layer, and the metal reflecting layer is arranged on the heat insulating layer.
As a further improvement of the invention, the carbon fiber collector further comprises an outdoor temperature sensor for sensing outdoor environment temperature, the carbon fiber collector is communicated with the outdoor temperature sensor and the carbon fiber controller through a LoRa wireless communication unit, the communication between the carbon fiber collector and the carbon fiber controller adopts a call answering mode, and the communication between the carbon fiber collector and the outdoor temperature sensor adopts a call answering mode.
As a further improvement of the invention, an expansion joint is arranged in the phase change heat storage insulating layer.
The invention has the beneficial effects that: the carbon fiber heat supply device based on phase change heat storage comprises a carbon fiber collector, a carbon fiber controller and a carbon fiber heat supply unit, wherein the carbon fiber controller is connected with the carbon fiber heat supply unit, the carbon fiber collector is connected with the carbon fiber controller, the carbon fiber collector collects working parameters of the carbon fiber heat supply unit, the carbon fiber heat supply unit comprises a phase change heat storage heat preservation layer formed by mixing concrete and phase change heat storage materials, a carbon fiber heating layer formed by carbon fiber wires, a ground shielding module used for ground shielding, a reflecting layer used for reflecting heat and a heat insulating layer used for heat insulation, the phase change heat preservation layer is formed by mixing concrete and phase change material particles, the carbon fiber heating layer is arranged in the phase change heat storage heat preservation layer or is arranged below the phase change heat storage heat preservation layer and used for heat insulation With phase change heat storage heat preservation in close contact with, the reflector layer the heat insulation layer is located phase change heat storage heat preservation with the lower part on carbon fiber heating layer, the reflector layer will phase change heat storage heat preservation with the heat on carbon fiber heating layer upwards reflects in order to prevent the heat to scatter and disappear downwards, ground connection shielding module connects carbon fiber heating layer and ground protection, the reflector layer is on the heat insulation layer, phase change heat storage heat preservation absorbs carbon fiber heating layer's heat forms sensible heat and phase change latent heat and keeps, including following step:
setting an average temperature t1 required to be maintained for heat supply, and acquiring an outdoor daily average temperature t2 of the next day;
acquiring the heat consumption of a heat supply space: acquiring the heat consumption Q of a heat supply space;
heat storage: controlling the carbon fiber heating layer to heat to form sensible heat and latent phase change heat for heat storage according to the heat consumption Q and the heating power W of the carbon fiber heating layer in the heat storage time period;
intelligent heat supply: and adjusting the heat supply according to the set heat supply required holding temperature t1 and the real-time temperature t5 of heat supply when heat is released through heat storage of the phase-change heat storage heat preservation layer, and if the real-time temperature t5 of heat supply is less than the set holding temperature t1 of heat supply, controlling the carbon fiber heating layer to heat for supplementing heat supply.
According to the invention, a multi-level carbon fiber heat supply unit and a phase change heat storage technology are adopted, the carbon fiber heat supply technology, the phase change heat storage technology and the intelligent control technology are combined through the intelligent control of the carbon fiber controller, the phase change heat storage can keep small temperature change in the heat storage process, meanwhile, the heat release can be slowly carried out, in addition, the phase change heat storage and heat supply control are realized, the phase change heat storage is carried out in a selected time period, and the cost saving is realized by utilizing the advantage of peak-valley electricity price.
Drawings
Fig. 1 is a schematic view of a carbon fiber heating apparatus according to the present invention.
Fig. 2 is a schematic view of a carbon fiber heating unit of the present invention.
Fig. 3 is a schematic structural diagram of the carbon fiber controller of the present invention.
Detailed Description
The invention is further described with reference to the following description and embodiments in conjunction with the accompanying drawings.
As shown in fig. 1 and 2, the embodiment of the present invention is: the carbon fiber heat supply device based on phase change heat storage comprises a carbon fiber collector 102, a carbon fiber controller 104 and a carbon fiber heat supply unit 105, wherein the carbon fiber controller 104 is connected with the carbon fiber heat supply unit 105, the carbon fiber collector 102 is connected with the carbon fiber controller 104, the carbon fiber collector 102 collects working parameters of the carbon fiber heat supply unit 105 through the carbon fiber controller 104, the carbon fiber heat supply unit 105 comprises a phase change heat storage heat preservation layer 5 formed by mixing concrete and phase change heat storage materials, a carbon fiber heating layer 4 formed by carbon fiber wires, a grounding shielding module 3 used for grounding shielding, a reflecting layer 2 used for reflecting heat and a heat insulation layer 1 used for heat insulation, the phase change heat storage heat preservation layer 5 is formed by mixing concrete and phase change material particles, the carbon fiber heating layer 4 is arranged in the phase-change heat-storage heat-preservation layer 5 or below the phase-change heat-storage heat-preservation layer 5 and is in close contact with the phase-change heat-storage heat-preservation layer 5, the reflection layer 2 and the heat-insulation layer 1 are arranged at the lower parts of the phase-change heat-storage heat-preservation layer 5 and the carbon fiber heating layer 4, the reflection layer 2 reflects the heat of the phase-change heat-storage heat-preservation layer 5 and the carbon fiber heating layer 4 upwards to prevent the heat from being dissipated downwards, the ground shielding module 3 is connected with the carbon fiber heating layer 4 and performs ground protection, the reflection layer 2 is arranged on the heat-insulation layer 1, the phase-change heat-storage heat-preservation layer 5 absorbs the heat of the carbon fiber heating layer to form sensible heat and latent heat of phase change for storage, and in the specific embodiment, the, the method comprises the following steps:
obtaining the temperature: setting the average temperature t1 maintained by the space, and acquiring the average outdoor daily temperature t2 of the next day;
acquiring heat consumption: and obtaining the heat consumption Q of the heat supply space.
Heat storage: in the heat storage time period, the carbon fiber heating layer 4 is controlled to be heated to form sensible heat and latent phase change heat according to the heat consumption Q and the heating power W of the carbon fiber heating layer to store heat;
intelligent heat supply: and adjusting the heat supply according to the set heat supply required holding temperature t1 and the real-time temperature t5 of heat supply when heat is released through heat storage of the phase-change heat storage heat preservation layer, and if the real-time temperature t5 of heat supply is less than the set holding temperature t1 of heat supply, controlling the carbon fiber heating layer to heat for supplementing heat supply.
As shown in fig. 1 and fig. 2, the specific implementation process of the present invention is as follows: carbon fiber heat supply unit 105 includes the carbon fiber heat generation layer 4 that is formed by concrete and phase change heat storage material mixture phase change heat storage heat preservation layer 5, carbon fiber line, is used for ground shield's ground shield module 3, reflection stratum 2 of reflection heat, is used for thermal-insulated heat insulation layer 1, and wherein, phase change heat storage heat preservation layer 5 is solid material, mixes and forms by concrete and phase change heat storage material, specifically, phase change heat storage heat preservation layer 5 is formed by concrete and phase change material granule mixture, and phase change heat storage material granule evenly distributed is in the concrete, and phase change heat storage heat preservation layer 5 forms sensible heat and phase change latent heat through the absorption heat and carries out the heat storage, can carry out fast heat storage, slow release. The carbon fiber wires are arranged or woven to form the carbon fiber heating layer 4. The carbon fiber heating layer 4 is arranged in the phase change heat storage and preservation layer 5, namely: the carbon fiber heating layer 4 is inserted into the phase-change heat-storage heat-preservation layer 5, the heat-storage heat-preservation material fills the gap of the carbon fiber heating layer 4 and wraps the carbon fiber heating layer 4 in the middle, so that the carbon fiber heating layer 4 generates heat to enable the phase-change heat-storage heat-preservation layer 5 to be fully absorbed, and at the moment, the carbon fiber heating layer 4 generates heat to enable the phase-change heat-storage heat-preservation layer 5 not to be arranged in a layered mode but to be mixed together. The reflecting layer 2 and the heat insulating layer 1 are positioned at the lower part of the layer body formed by mixing the phase-change heat-storage heat-preservation layer 5 due to the heating of the carbon fiber heating layer 4. Carbon fiber generate heat the layer 4 with during 5 layering settings of phase change heat storage heat preservation, carbon fiber generate heat the layer 4 and set up below the phase change heat storage heat preservation 5 and with 5 in close contact with of phase change heat storage heat preservation, the reflector layer 2 the heat insulation layer 1 sets up the lower part of phase change heat storage heat preservation 5. The grounding shielding module 3 is connected with the carbon fiber heating layer 4 and performs grounding protection, and the grounding shielding module 3 may be disposed around the carbon fiber heating layer 4 and connected with the carbon fiber heating layer 4 to perform grounding protection. The grounding shielding module 3 is a grounding shielding layer, the grounding shielding layer is arranged between the reflection layer 2 and the carbon fiber heating layer 4, and the grounding shielding layer is connected with the carbon fiber heating layer 4 to ensure that the carbon fiber heating layer 4 is grounded. The reflecting layer 2 reflects the heat of the phase change heat storage insulating layer 5 and the carbon fiber heating layer 4 upwards to prevent the heat from dissipating downwards. In an embodiment, the carbon fiber controller 104 pre-sets the area of each side of the space and the average heat transfer coefficient corresponding to each side.
The method comprises the following specific steps:
obtaining the temperature: and setting the average temperature t1 required to be maintained for heating, and obtaining the average outdoor daily temperature t2 of the next day.
The specific implementation process is as follows: in order to calculate the heat consumption amount, the average temperature to be maintained the next day needs to be considered, and therefore, the average temperature t1 to be maintained is set. Meanwhile, the average outdoor daily temperature t2 of the second day is obtained by means of weather forecast, such as connecting to the local weather service station 106, in a specific embodiment, the carbon fiber collector 102 is connected to the server 101, the weather forecast information of the second day is obtained through the server 101, and the average outdoor daily temperature t2 of the second day is obtained through the weather forecast information.
Acquiring heat consumption: and acquiring the heat consumption Q according to the area of each surface of the space, the average heat transfer coefficient sum of each surface and the temperature difference between the space and the outside.
The heat loss of the air exchange and the heat obtained by the space are ignored. The heat loss of the space heat transfer is determined according to the area of the heat transfer surface, the temperature of the two surfaces of the heat transfer surface and the heat transfer coefficient.
The calculation of the heat consumption Q may be performed specifically according to the shape of the heating space, and will be described below by taking a hexahedral shape as an example. The specific implementation process is as follows:
the top surface average heat transfer coefficient Kn1, the bottom surface average heat transfer coefficient Kn2, the average heat transfer coefficients of the surrounding four surfaces Kn3, Kn4, Kn5 and Kn6 are expressed in W/(m)2.K)。
Top surface area S1, bottom surface area S2, surrounding four-side areas S3, S4, S5, S6, singlyBit is m2。
The average temperature difference between the top surface and the outside is T1, the average temperature difference between the bottom surface and the outside is T2, and the average temperature difference between the four surrounding surfaces and the outside is T1, T4, T5 and T6, wherein the unit is K.
Heat consumption Q in kWh.
Q＝[(Kn1×S1×T1)+(Kn2×S2×T2)+(Kn3×S3×T1)+(Kn4×S4 ×T4)+(Kn5×S5×T5)+(Kn6×S6×T6)]×24/1000。
In a preferred embodiment, the power of the carbon fiber heat generating layer 4 can be determined by selecting different heat generating powers of the carbon fiber heat generating layer 4: .
The specific implementation process is as follows: the heating power W of the carbon fiber heating layer 4 of the heating space can be fixed, or can be set, and if fixed, can be preset in the carbon fiber controller 104; if the high or low can be set, the heat generation power W of the carbon fiber heat generation layer 4 is selected during heat storage.
Heat storage: and in the heat storage time period, the carbon fiber heating layer 4 is controlled to heat according to the heat consumption Q and the heating power W of the carbon fiber heating layer to form sensible heat and latent heat of phase change for heat storage.
The specific implementation process is as follows: and starting to control the working time of the carbon fiber heating layer 4 to be H in the selected heat storage time period. A heat accumulation time period is first selected by the carbon fiber controller 104, and the time of the heat accumulation time period is preferably longer than the heat accumulation time H.
Intelligent heat supply: according to the set required holding temperature t1 for heat supply and the real-time temperature t5 after heat is released through heat accumulation, if the real-time temperature t5 is less than the set holding temperature t1, the carbon fiber controller 104 controls the carbon fiber heat-generating layer 4 to generate heat to supplement heat supply.
The specific implementation process is as follows: as the carbon fiber heating layer 4 stops heating, the phase change heat storage and preservation layer 5 starts releasing heat. In the period of time when the carbon fiber heating layer 4 is just stopped, the temperature after heating is higher than or equal to the average temperature t1 to be kept, and at this time, only the phase-change heat-storage heat-preservation layer 5 releases heat; when the temperature of the space is lower than the average temperature t1 to be kept, and the heat quantity released by the phase-change heat-storage heat-preservation layer 5 is less than the average temperature t1 to be kept, the carbon fiber controller 104 controls the carbon fiber heat-generation layer 4 to generate heat to supplement heat supply so as to maintain the average temperature t1 to be kept. Therefore, intelligent control based on heat storage is achieved, energy can be greatly saved through accurate control, and cost is greatly saved.
In a preferred embodiment, the method further comprises the following steps of constructing a heat storage model: and constructing a heat storage model according to the heating power of the carbon fiber heating layer 4 and the heat storage capacity of the phase-change heat storage heat preservation layer 5, and constructing the relationship between the heating power of the carbon fiber heating layer 4 and the heat storage capacity of the phase-change heat storage heat preservation layer 5.
The specific implementation process is as follows: the heat storage amount of the phase change heat storage insulating layer 5 is as follows: qXTemperature of increase in specific heat capacity of the thermal storage material, mass of the thermal storage material, C M Δ T, wherein: c represents the specific heat capacity of the heat storage material, M represents the mass of the heat storage material, and Δ T is the increased temperature. Wherein: Δ T is the initial heat accumulation temperature — heat accumulation temperature. Heating the carbon fiber heating layer 4: qjWH, wherein: qjFor heating, W is the heating power of the carbon fiber heating layer 4, and H is the heating time of the carbon fiber heating layer 4. The heat storage amount of the phase-change heat-storage heat-preservation layer 5 comes from the heating of the carbon fiber heat-generating layer 4, the loss in heat storage is ignored, and Qj＝QXAnd establishing the relationship between the heating power of the carbon fiber heating layer 4 and the heat storage of the phase-change heat storage heat-preservation layer 5:
WH ═ C × M Δ T, that is: h ═ C × M Δ T/W.
The preferred embodiments of the present invention are: the heat consumption Q also comprises one or more of heat loss of space heat transfer, heat loss of air ventilation and obtained heat.
The heat loss of the spatial heat transfer is calculated as described above.
The heat loss calculation process for air ventilation is as follows:
wherein: qhRepresents the heat loss of air ventilation with the unit of W/m2，tnIndicating the temperature, t, in the roomwRepresenting the temperature of the ventilation air; ckRepresents the specific heat capacity of the ventilation gas, and p represents the density of air (unit kg/m)3) N denotes the number of ventilation times, V denotes the volume of ventilation, in m3。
The obtained heat quantity comprises the heat quantity released by the human body temperature of the space and the heat quantity released by other heat sources, and is calculated according to specific conditions.
As shown in fig. 1, 2 and 3, the embodiment of the present invention is: the carbon fiber heating device based on phase change heat storage is constructed and comprises a carbon fiber collector 102, a carbon fiber controller 104 and a carbon fiber heating unit 105, wherein the carbon fiber controller 104 is connected with the carbon fiber heating unit 105, the carbon fiber collector 102 is connected with the carbon fiber controller 104, the carbon fiber collector 102 collects working parameters of the carbon fiber heating unit 105, the carbon fiber heating unit 105 comprises a phase change heat storage heat preservation layer 5 formed by mixing concrete and phase change heat storage materials, a carbon fiber heating layer 4 formed by a carbon fiber line, a grounding shielding module 3 used for grounding shielding, a reflecting layer 2 used for reflecting heat and a heat insulation layer 1 used for heat insulation, the phase change heat storage heat preservation layer 5 is formed by mixing concrete and phase change material particles, the carbon fiber heating layer 4 is arranged in the phase change heat storage heat preservation layer 5 or arranged below the phase change heat storage heat preservation layer 5 The carbon fiber controller 104 comprises a setting module 11, an outdoor temperature acquisition module 12 for acquiring the average temperature of outdoor days, an intelligent heat supply module 13 for acquiring heat consumption, a heat consumption acquisition module 14 for acquiring heat consumption, and a setting module 11 for setting the area of each side of a space and the average heat transfer coefficient corresponding to each side, the setting module 11 sets a required holding temperature t1 for heat supply, a heating power W of the carbon fiber heating layer 4 and a heat storage time period, the outdoor temperature obtaining module 12 obtains an outdoor daily average temperature t2 of the next day, the heat consumption obtaining module 14 obtains a heat consumption Q, the intelligent heat supply module 13 controls the carbon fiber heating layer 4 to generate heat to supplement heat supply according to the set holding temperature t1 and a real-time temperature t5 after heat is released through heat storage, and if the real-time temperature t5 is smaller than the set holding temperature t 1.
As shown in fig. 1 and fig. 2, the specific implementation process of the present invention is as follows: carbon fiber heat supply unit 105 includes the carbon fiber heat generation layer 4 that is formed by concrete and phase change heat storage material mixture phase change heat storage heat preservation layer 5, carbon fiber line, is used for ground shield's ground shield module 3, reflection stratum 2 of reflection heat, is used for thermal-insulated heat insulation layer 1, and wherein, phase change heat storage heat preservation layer 5 is solid material, mixes and forms by concrete and phase change heat storage material, specifically, phase change heat storage heat preservation layer 5 is formed by concrete and phase change material granule mixture, and phase change heat storage material granule evenly distributed is in the concrete, and phase change heat storage heat preservation layer 5 forms sensible heat and phase change latent heat through the absorption heat and carries out the heat storage, can carry out fast heat storage, slow release. The carbon fiber wires are arranged or woven to form the carbon fiber heating layer 4. The carbon fiber heating layer 4 is arranged in the phase change heat storage and preservation layer 5, namely: the carbon fiber heating layer 4 is inserted into the phase-change heat-storage heat-preservation layer 5, the heat-storage heat-preservation material fills the gap of the carbon fiber heating layer 4 and wraps the carbon fiber heating layer 4 in the middle, so that the carbon fiber heating layer 4 generates heat to enable the phase-change heat-storage heat-preservation layer 5 to be fully absorbed, and at the moment, the carbon fiber heating layer 4 generates heat to enable the phase-change heat-storage heat-preservation layer 5 not to be arranged in a layered mode but to be mixed together. The reflecting layer 2 and the heat insulating layer 1 are positioned at the lower part of the layer body formed by mixing the phase-change heat-storage heat-preservation layer 5 due to the heating of the carbon fiber heating layer 4. Carbon fiber generate heat the layer 4 with during 5 layering settings of phase change heat storage heat preservation, carbon fiber generate heat the layer 4 and set up below the phase change heat storage heat preservation 5 and with 5 in close contact with of phase change heat storage heat preservation, the reflector layer 2 the heat insulation layer 1 sets up the lower part of phase change heat storage heat preservation 5. The grounding shielding module 3 is connected with the carbon fiber heating layer 4 and performs grounding protection, and the grounding shielding module 3 may be disposed around the carbon fiber heating layer 4 and connected with the carbon fiber heating layer 4 to perform grounding protection. The grounding shielding module 3 is a grounding shielding layer, the grounding shielding layer is arranged between the reflection layer 2 and the carbon fiber heating layer 4, and the grounding shielding layer is connected with the carbon fiber heating layer 4 to ensure that the carbon fiber heating layer 4 is grounded. The reflecting layer 2 reflects the heat of the phase change heat storage insulating layer 5 and the carbon fiber heating layer 4 upwards to prevent the heat from dissipating downwards. The setting module 11 sets the area of each surface of the space and the average heat transfer coefficient corresponding to each surface, the setting module 11 sets a holding temperature t1 required for heat supply, the heating power W of the carbon fiber heating layer 4 and a heat storage time period, and the outdoor temperature obtaining module 12 obtains the average outdoor daily temperature t2 of the next day.
The method comprises the following specific steps:
obtaining the temperature: the setting module 11 sets a holding temperature t1 required for heating, and the outdoor temperature acquisition module 12 acquires an outdoor daily average temperature t2 of the next day.
The specific implementation process is as follows: in order to calculate the heat consumption amount, the average temperature to be maintained the next day needs to be considered, and therefore, the maintained average temperature t1 is set. Meanwhile, the outdoor daily average temperature t2 of the local second day is obtained through means such as weather forecast, and in a specific embodiment, the carbon fiber collector 102 is connected with the server 101, weather forecast information of the second day is obtained through the server 101, and the outdoor daily average temperature t2 of the second day is obtained through the weather forecast information.
Determining the heating power: and determining the heating power W of the carbon fiber heating layer 4.
The specific implementation process is as follows: the heating power W of the carbon fiber heating layer 4 may be fixed or may be set, and if fixed, may be preset in the carbon fiber controller 104; if the high or low can be set, the heat generation power W of the carbon fiber heat generation layer 4 is selected during heat storage.
The heat consumption amount acquisition module 14 acquires a heat consumption amount Q.
The heat loss of the space heat transfer is calculated, the heat loss of air ventilation and the heat obtained by the space are ignored, and meanwhile, the heat consumption from the heat storage time to the heat supply time of the next day is not considered. The heat loss of the space heat transfer is determined according to the area of the heat transfer surface, the temperature of the two surfaces of the heat transfer surface and the heat transfer coefficient. The heat consumption acquisition module 14 acquires the heat consumption Q according to the area of each surface of the space, the average heat transfer coefficient of each surface, and the temperature difference between the space and the outside. The calculation of the heat consumption Q may be performed specifically according to the shape of the heating space, and will be described below taking a hexahedral shape as an example. The specific implementation process is as follows:
the top surface average heat transfer coefficient Kn1, the bottom surface average heat transfer coefficient Kn2, the average heat transfer coefficients of the surrounding four surfaces Kn3, Kn4, Kn5 and Kn6 are expressed in W/(m)2.K)。
Top surface area S1, bottom surface area S2, and surrounding four-side areas S3, S4, S5, S6, in m2。
The average temperature difference between the top surface and the outside is T1, the average temperature difference between the bottom surface and the outside is T2, and the average temperature difference between the four surrounding surfaces and the outside is T1, T4, T5 and T6, wherein the unit is K.
Heat consumption Q in kWh.
Q＝[(Kn1×S1×T1)+(Kn2×S2×T2)+(Kn3×S3×T1)+(Kn4×S4 ×T4)+(Kn5×S5×T5)+(Kn6×S6×T6)]×24/1000。
The heat storage model building module 15 is further included, and the heat storage model building module 15 builds a heat storage model according to the heating power of the carbon fiber heat generation layer 4 and the heat storage capacity of the phase change heat storage heat preservation layer 5, and builds the relationship between the heating power of the carbon fiber heat generation layer 4 and the heat storage capacity of the phase change heat storage heat preservation layer 5.
The specific implementation process is as follows: the heat storage capacity of the phase-change heat storage insulation layer 5 comprises sensible heat QxAnd phase transition latent heat Qq：QXTemperature of increase of specific heat capacity of heat storage material ═ C ═ M ═ △ T, where C denotes specific heat capacity of heat storage material, M denotes mass of heat storage material, △ T temperature increase, where △ T ═ heat storage initial temperature-heat storage temperatureqmass-S M, where S denotes the latent heat coefficient and M denotes the mass of the phase change material. Heating the carbon fiber heating layer 4: q ═ WH, wherein: q is the heating capacity, W is the heating power of the carbon fiber heating layer 4, and H is the heating time of the carbon fiber heating layer 4. The heat storage quantity of the phase-change heat-storage heat-preservation layer 5 comes from the heating of the carbon fiber heating layer 4, and the heat storage quantity is neglected
C × M Δ T + S × M, i.e.: h ═ M ═ Δ T + S ═ M)/W
WH＝Q，H＝Q/W
Heat storage: and in the heat storage time period, the carbon fiber heating layer 4 is controlled to heat according to the heat consumption Q and the heating power W of the carbon fiber heating layer to form sensible heat and latent heat of phase change for heat storage.
The specific implementation process is as follows: and starting to control the working time of the carbon fiber heating layer 4 to be H in the selected heat storage time period. A heat accumulation time period is first selected by the carbon fiber controller 104, and the time of the heat accumulation time period is preferably longer than the heat accumulation time H.
Intelligent heat supply module 13 intelligent heat supply: according to the set holding temperature t1 and the real-time temperature t5 after heat is released by heat accumulation, if the real-time temperature t5 is less than the set holding temperature t1, the carbon fiber controller 104 controls the carbon fiber heating layer 4 to generate heat for supplying heat additionally.
The specific implementation process is as follows: as the carbon fiber heating layer 4 stops heating, the phase change heat storage and preservation layer 5 starts releasing heat. In the time period when the carbon fiber heating layer 4 is just stopped, the temperature of the space is higher than or equal to the average temperature t1 to be kept by the space, and at the moment, only the phase change heat storage insulating layer 5 releases heat; when the temperature of the space is lower than the average temperature t1 to be maintained, and the heat quantity released by the phase-change heat-storage thermal-insulation layer 5 is less than the average temperature t1 to be maintained, the carbon fiber controller 104 controls the carbon fiber heat-generating layer 4 to generate heat to supplement heat supply so as to maintain the average temperature t1 to be maintained. Therefore, intelligent control based on heat storage is achieved, energy can be greatly saved through accurate control, and cost is greatly saved.
As shown in fig. 1 to 2, the preferred embodiment of the present invention is: the reflecting layer 2 is a reflecting coating which is coated on the heat insulating layer 1. The reflective coating and the heat insulation layer 1 are positioned at the lower part of the carbon fiber heating layer 4, so that heat emitted by the carbon fiber heating layer 4 is reflected upwards, and the heat is prevented from being released downwards. The reflecting layer 2 is a metal reflecting layer, the metal reflecting layer is arranged on the heat insulating layer 1, and the metal reflecting layer is formed by aluminum foil.
As shown in fig. 1 to 2, the carbon fiber collector 102 communicates with the outdoor temperature sensor 103 and the carbon fiber controller 104 through a LoRa wireless communication unit, the communication between the carbon fiber collector 102 and the carbon fiber controller 104 is in a call response manner, and the communication between the carbon fiber collector 102 and the outdoor temperature sensor 103 is in a call response manner. The carbon fiber collector 102 can collect or set the parameters of the carbon fiber controller 104 and the outdoor temperature sensor 106 at any time.
As shown in fig. 1 to 2, the carbon fiber collector 102 communicates with the server 101 by using 4G, and the carbon fiber collector 102 sends a command issued by the server 101 to the carbon fiber controller 104 or the outdoor temperature sensor 103, and uploads data collected by the carbon fiber controller 104 or the outdoor temperature sensor 103 to the server 101. The server 101 can also be connected with a mobile phone APP108 or a PC end 107 to transmit heat supply information, and meanwhile, remote control can be performed through the mobile phone APP108 or the PC end 107.
The preferred embodiments of the present invention are: and an expansion joint is arranged in the phase change heat storage insulating layer 5. The expansion joint is used for buffering the volume change of the phase change heat storage insulating layer 5 caused by expansion with heat and contraction with cold.
The preferred embodiments of the present invention are: the heat-insulation floor is characterized by further comprising a damp-proof isolation layer and a floor decoration layer for decorating the floor, wherein the isolation layer is arranged between the phase change heat-storage heat-insulation layer and the floor decoration layer.
The invention has the beneficial effects that: the carbon fiber heat supply device based on phase change heat storage comprises a carbon fiber collector 102, a carbon fiber controller 104 and a carbon fiber heat supply unit 105, wherein the carbon fiber controller 104 is connected with the carbon fiber heat supply unit 105, the carbon fiber collector 102 is connected with the carbon fiber controller 104, the carbon fiber collector 102 collects working parameters of the carbon fiber heat supply unit 105 through the carbon fiber controller 104, the carbon fiber heat supply unit 105 comprises a phase change heat storage heat preservation layer 5 formed by mixing concrete and a phase change heat storage material, a carbon fiber heating layer 4 formed by a carbon fiber wire, a grounding shielding module 3 used for grounding shielding, a reflecting layer 2 used for reflecting heat and a heat insulation layer 1 used for heat insulation, wherein the carbon fiber heating layer 4 is arranged in the phase change heat storage heat preservation layer 5 or arranged below the phase change heat storage heat preservation layer 5 and is arranged below the phase change heat storage heat preservation layer 5 The thermal insulation layer 5 is in close contact with the reflective layer 2 and the thermal insulation layer 1 are positioned at the lower parts of the phase change thermal insulation layer 5 and the carbon fiber heating layer 4, the reflecting layer 2 reflects the heat of the phase change heat storage and insulation layer 5 and the carbon fiber heating layer 4 upwards to prevent the heat from dissipating downwards, the grounding shielding module 3 is connected with the carbon fiber heating layer 4 and performs grounding protection, the reflecting layer 2 is arranged on the heat insulating layer 1, the phase-change heat-storage insulating layer 5 absorbs the heat of the carbon fiber heating layer to form sensible heat and phase-change latent heat for storage, the carbon fiber controller 104 includes areas of the respective sides of the installation space and average heat transfer coefficients corresponding to the respective sides, the carbon fiber controller controls the work of the carbon fiber heating layer according to the heat storage capacity of the phase change heat storage heat preservation layer and the heat productivity of the carbon fiber heating layer. Through carbon fiber controller's intelligent control combines carbon fiber heat supply technique, phase change heat storage technique and intelligent control technique, and phase change heat storage can keep temperature variation little at the heat accumulation in-process, simultaneously, can slowly go on during the release heat, in addition, realizes phase change heat storage, heat supply control, selects the period to carry out phase change heat storage, utilizes peak valley price advantage, realizes the cost saving.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all should be considered as belonging to the protection scope of the present invention.
Claims (10)
1. The carbon fiber heat supply device based on phase change heat storage comprises a carbon fiber collector, a carbon fiber controller and a carbon fiber heat supply unit, wherein the carbon fiber controller is connected with the carbon fiber heat supply unit, the carbon fiber collector is connected with the carbon fiber controller, the carbon fiber collector collects working parameters of the carbon fiber heat supply unit through the carbon fiber controller, the carbon fiber heat supply unit comprises a phase change heat storage heat preservation layer formed by mixing concrete and a phase change heat storage material, a carbon fiber heating layer formed by carbon fiber wires, a ground shielding module used for ground shielding, a reflecting layer used for reflecting heat and a heat insulation layer used for heat insulation, the phase change heat storage heat preservation layer is formed by mixing concrete and phase change material particles, and the carbon fiber heating layer is arranged in the phase change heat storage heat preservation layer or arranged below the phase change heat storage heat preservation layer and tightly connected with the phase change heat storage heat preservation layer Touch, the reflector layer the heat insulation layer is located the phase change heat storage heat preservation with the lower part on carbon fiber heating layer, the reflector layer will the phase change heat storage heat preservation with the heat on carbon fiber heating layer upwards reflects in order to prevent the heat to scatter and disappear downwards, ground connection shielding module connects the carbon fiber heating layer and carries out ground protection, the reflector layer is in on the heat insulation layer, the phase change heat storage heat preservation absorbs the heat formation sensible heat and the phase change latent heat on carbon fiber heating layer are stored, including following step:
obtaining the temperature: setting an average temperature t1 required to be maintained for heat supply, and acquiring an outdoor daily average temperature t2 of the next day;
acquiring the heat consumption of a heat supply space: acquiring the heat consumption Q of a heat supply space;
heat storage: controlling the carbon fiber heating layer to heat to form sensible heat and latent phase change heat for heat storage according to the heat consumption Q and the heating power W of the carbon fiber heating layer in the heat storage time period;
intelligent heat supply: and adjusting the heating according to the set heating requirement keeping temperature t1 and the real-time temperature t5 of heating when heat is released through heat accumulation of the phase-change heat accumulation insulating layer, and if the real-time temperature t5 of heating is less than the set keeping temperature t1 of heating, controlling the carbon fiber heating layer to heat and supplement the heating by the carbon fiber controller.
2. The phase-change heat storage based carbon fiber heat supply method according to claim 1, characterized in that: the heat consumption Q also includes subtracting the heat gained by the space.
3. The phase-change heat storage based carbon fiber heat supply method according to claim 1, characterized in that: the heat consumption Q also comprises one or more of heat loss of space heat transfer and heat loss of air ventilation.
4. The phase-change heat storage based carbon fiber heat supply method according to claim 1, characterized in that: the heat loss of the space heat transfer is determined according to the area of the heat transfer surface, the temperature of the two surfaces of the heat transfer surface and the heat transfer coefficient.
5. The utility model provides a carbon fiber heating device based on phase change heat accumulation which characterized in that: the carbon fiber heat supply energy-saving unit comprises a carbon fiber collector and a carbon fiber heat supply unit, wherein the carbon fiber controller is connected with the carbon fiber heat supply unit, the carbon fiber collector is connected with the carbon fiber controller, the carbon fiber collector collects working parameters of the carbon fiber heat supply unit through the carbon fiber controller, the carbon fiber heat supply unit comprises a phase change heat storage heat preservation layer formed by mixing concrete and a phase change heat storage material, a carbon fiber heating layer formed by carbon fiber wires, a ground shielding module for ground shielding, a reflecting layer for reflecting heat and a heat insulation layer for heat insulation, the phase change heat storage heat preservation layer is formed by mixing concrete and phase change material particles, the carbon fiber heating layer is arranged in the phase change heat storage heat preservation layer or is arranged below the phase change heat storage heat preservation layer and is in close contact with the phase change heat storage heat preservation layer, the reflecting layer is located on the phase-change heat-storage heat-preservation layer and the lower portion of the carbon fiber heating layer, the reflecting layer reflects the heat of the phase-change heat-storage heat-preservation layer and the carbon fiber heating layer upwards to prevent the heat from being dissipated downwards, the ground shielding module is connected with the carbon fiber heating layer and performs ground protection, the reflecting layer is located on the heat-insulation layer, the phase-change heat-storage heat-preservation layer absorbs the heat of the carbon fiber heating layer to form sensible heat and latent heat of phase change for storage, the carbon fiber controller comprises a setting module, an outdoor temperature acquisition module for acquiring the average temperature of the outdoor day, an intelligent heat supply module and a heat consumption acquisition module, the setting module sets the holding temperature t1 and the heat storage time period for heat supply, the outdoor temperature acquisition module acquires the average temperature t2 of the outdoor day of the next day, and the heat consumption, the carbon fiber controller is according to heat consumption Q and the heating power W control on carbon fiber heating layer in the heat accumulation time quantum the carbon fiber heating layer heating forms sensible heat and phase transition latent heat and carries out the heat accumulation, intelligent heat supply module is according to holding temperature t1 that sets up the heat supply space and through the thermal real-time temperature t5 of heat accumulation release, if the real-time temperature t5 of heat supply is less than the holding temperature t1 of the heat supply space of setting up, then the carbon fiber controller control carbon fiber heating layer generates heat and supplements the heat supply.
6. The carbon fiber heating device based on phase change heat storage according to claim 5, wherein: the ground shielding module is a ground shielding layer, and the ground shielding layer is arranged between the reflecting layer and the carbon fiber heating layer.
7. The carbon fiber heating device based on phase change heat storage according to claim 5, wherein: the carbon fiber heating layer is embedded in the phase change heat storage insulating layer or is tightly attached to the bottom surface of the phase change heat storage insulating layer.
8. The carbon fiber heating device based on phase change heat storage according to claim 5, wherein: the reflecting layer is a reflecting coating which is coated on the heat insulating layer; or the reflecting layer is a metal reflecting layer, and the metal reflecting layer is arranged on the heat insulating layer.
9. The carbon fiber heating device based on phase change heat storage according to claim 5, wherein: the carbon fiber collector is communicated with the carbon fiber controller in a calling and answering mode through a LoRa wireless communication unit, and the carbon fiber collector is communicated with the outdoor temperature sensor in a calling and answering mode through communication between the carbon fiber controller.
10. The carbon fiber heating device based on phase change heat storage according to claim 5, wherein: and an expansion joint is arranged in the phase change heat storage insulating layer.
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Also Published As
| Publication number | Publication date |
|---|---|
| CN212108656U (en) | 2020-12-08 |
| CN110793095A (en) | 2020-02-14 |
| CN110779079A (en) | 2020-02-11 |
| CN212108657U (en) | 2020-12-08 |
| CN110567047A (en) | 2019-12-13 |
| CN211952980U (en) | 2020-11-17 |
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Application publication date: 20200421 |