CN110847522A - Building energy recycling system - Google Patents

Building energy recycling system Download PDF

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Publication number
CN110847522A
CN110847522A CN201911023319.5A CN201911023319A CN110847522A CN 110847522 A CN110847522 A CN 110847522A CN 201911023319 A CN201911023319 A CN 201911023319A CN 110847522 A CN110847522 A CN 110847522A
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Prior art keywords
water
energy
rainwater
roof
building
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CN201911023319.5A
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Chinese (zh)
Inventor
方俊
孙佳
王文涛
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Zhejiang College of Construction
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Zhejiang College of Construction
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Priority to CN201911023319.5A priority Critical patent/CN110847522A/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage; Sky-lights
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D35/00Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B01D35/027Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks rigidly mounted in or on tanks or reservoirs
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B3/00Methods or installations for obtaining or collecting drinking water or tap water
    • E03B3/02Methods or installations for obtaining or collecting drinking water or tap water from rain-water
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00Supporting structures for PV modules
    • H02S20/20Supporting structures directly fixed to an immovable object
    • H02S20/22Supporting structures directly fixed to an immovable object specially adapted for buildings
    • H02S20/23Supporting structures directly fixed to an immovable object specially adapted for buildings specially adapted for roof structures
    • H02S20/24Supporting structures directly fixed to an immovable object specially adapted for buildings specially adapted for roof structures specially adapted for flat roofs
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/108Rainwater harvesting
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/10Photovoltaic [PV]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Abstract

The invention discloses a building energy recycling system, which comprises a solar energy utilization system and a rainwater recycling system, wherein the rainwater recycling system comprises a rainwater tank arranged on one side of a roof, a water heat-insulation interlayer arranged below the roof and a water storage tank arranged on the ground, and the rainwater tank is communicated with the water storage tank through a rainwater pipe; a water well is arranged in the water storage pool, and water in the water well is communicated with the water heat-preservation interlayer through a submersible pump; the solar energy utilization system comprises a photovoltaic plate roof truss arranged on the top surface of the roof, a solar photovoltaic plate is arranged on the photovoltaic plate roof truss and electrically connected with the submersible pump, and the photovoltaic plate roof truss and the water heat-insulation interlayer jointly adjust the temperature inside the building. The invention converts solar energy into electric energy, provides the electric energy for electric equipment in the building energy comprehensive utilization system, enables the interior of the building to achieve the effects of being warm in winter and cool in summer and self-sufficient in energy consumption, and realizes energy conservation and environmental protection by collecting and utilizing rainwater and absorbing and utilizing natural energy sources such as solar energy, underground energy and the like.

Description

Building energy recycling system
Technical Field
The invention relates to the field of ecological energy-saving buildings, in particular to a building energy recycling system.
Background
In the world, people are greatly increased, resources are sharply reduced, the ecological imbalance is caused, the environment is seriously damaged, the survival and development of human beings and the global environmental problems are more and more serious, and the ecological crisis is almost to the extent of being triggered at once. In the presence of severe reality, energy prices rise dramatically, greenhouse effect is increased, energy supply and demand situations are worsened continuously, energy shortage and environmental problems become important current situations facing the world at first.
At present, fresh water resources all over the world only account for 2.5 percent of the total water quantity, more than 70 percent of the fresh water resources are frozen in ice covers of south poles and north poles, and 86 percent of the fresh water resources are difficult to utilize due to the fact that alpine glaciers and permanently frozen snow are difficult to utilize. The fresh water resource which can be really utilized by human beings is a part of rivers, lakes and underground water and only accounts for 0.26 percent of the total water quantity of the earth ball, and at present, 1/6 people and about 10 hundred million people are lack of water all over the world. Experts estimate that by 2025 the world population will be over 25 billion in water shortage.
Meanwhile, if no real action is taken as soon as possible, the global average temperature will rise by 3-6 ℃ and sea level by 15-35 meters in the future 100 years, which results in the extinction of nearly half of biological species and huge economic and social losses. Such severe situation will force the rough energy consumption mode to be gradually replaced by the sustainable energy development and utilization, and push the world economy to gradually turn to the low-carbon economy till the hydrogen economy.
The ecological building is characterized in that the relation between the building and other related factors is reasonably arranged and organized by applying the basic principles of ecology, building technology science, modern scientific technology and the like according to the local natural ecological environment, so that the building and the environment form an organic combination, and the ecological building has good indoor climate conditions and strong biological climate regulation capacity so as to meet the environment comfort of people living and form a benign circulation system among people, the building and the natural ecological environment.
Patent 201410816859X discloses an ecological, energy-saving rainwater recycling system, which includes a bioretention facility, a permeation discharge facility, a photoelectric conversion device, and an ultraviolet disinfection device. The biological detention facility for rainwater treatment mainly comprises a covering layer, a vegetable layer, a packing layer, a gravel layer, a water collecting pipe, a filter screen and a water outlet pipe; rainwater which cannot permeate before the bioretention facility is drained by a permeation and drainage facility, and the device consists of a rainwater port, a permeation type rainwater inspection well and a permeation-drainage integrated pipeline. A photovoltaic panel, a controller and a storage battery in the photoelectric conversion device are respectively connected with a water pump and an ultraviolet lamp to form a loop. The ultraviolet disinfection device mainly comprises a multistage quartz tube and an ultraviolet lamp, wherein the ultraviolet lamp is arranged in the quartz tube and is used for disinfecting overflowing water. The method has low rainwater recovery efficiency and single energy-saving effect, and cannot reasonably distribute and utilize the energy of the whole house.
Disclosure of Invention
The invention aims to provide an environment-friendly and energy-saving energy exchange well and a rainwater recycling system aiming at the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a building energy recycling system comprises a solar energy utilization system and a rainwater recycling system, wherein the rainwater recycling system comprises a rainwater tank arranged on one side of a roof, a water heat-insulation interlayer arranged below the roof and a water storage tank arranged on the ground, and the rainwater tank is communicated with the water storage tank through a rainwater pipe; a water well is arranged in the water storage pool, and water in the water well is communicated with the water heat-preservation interlayer through a submersible pump;
the solar energy utilization system comprises a photovoltaic plate roof truss arranged on the top surface of the roof, a solar photovoltaic plate is arranged on the photovoltaic plate roof truss and is electrically connected with the submersible pump,
the photovoltaic plate roof truss and the water heat-insulation interlayer jointly adjust the temperature inside the building.
Stones in the stream or the end stream stone are irregular stones smaller than the stream stone.
Furthermore, the lower part of the well is provided with a hole, a circular ring-shaped filter layer is laid around the well, the upper layer of the filter layer is a brook stone filter layer, the lower layer of the filter layer is a stone dispersing filter layer, and rainwater in the water storage tank permeates into the well through the bottom of the tank, the brook stone filter layer and the stone dispersing filter layer.
Furthermore, a float valve linkage device is installed in the water heat-insulation interlayer, and when the water level in the water heat-insulation interlayer reaches a certain height, the float valve rises and the submersible pump is closed. The certain height means that the water level does not overflow.
Further, the meeting system further comprises a water heat-insulation interlayer, a float valve linkage device is installed in the water heat-insulation interlayer, the water heat-insulation interlayer is arranged below the roof, a submersible pump is arranged in the well, and when the outdoor temperature difference is large, water in the well is pumped into the water heat-insulation interlayer below the roof through the submersible pump. The large outdoor temperature difference means that the temperature difference between the indoor and the outdoor is large in the daytime in summer or at night in winter, and the well water temperature is moderate and is beneficial to heat preservation.
Furthermore, the photovoltaic plate roof truss is of a slope roof type, the solar photovoltaic plate is arranged on the south slope, the east slope and the west slope of the photovoltaic plate roof truss, and the solar photovoltaic plate is electrically connected with the electric equipment inside the building.
Further, the photovoltaic board roof truss is including the steel joist skeleton that the slope set up, the steel joist skeleton that the photovoltaic board roof truss set up including the slope, the steel joist skeleton is fixed in on the house side wall post, the steel joist skeleton is equipped with the installing zone of solar photovoltaic board, and the steel joist skeleton upper berth outside the installing zone is equipped with the light baffle. The inclined arrangement means that the steel keel framework is built into a slope type roof.
Furthermore, the solar photovoltaic panel is embedded into the installation area, and structural glue is bonded around the solar photovoltaic panel and between the light shelves.
Furthermore, a layer of spliced heat-insulation shelf is arranged between the water heat-insulation interlayer and the photovoltaic panel roof, and the spliced heat-insulation shelf is composed of stainless steel section steel and a light partition plate.
Further, the rain gutter is open at the top and is annularly arranged around the roof.
Further, the length of the water storage pool is 15m, the width of the water storage pool is 8m, the depth of the water well is 2m, the depth of the water well is 13m, the diameter of the water well is 3m, and a prefabricated concrete water well with holes is arranged 3m below the water well.
Furthermore, a circular ring-shaped filter layer with the inner diameter of 3m and the outer diameter of 9m is paved around the well, the upper layer of the filter layer is a brook stone filter layer with the depth of 6m, and the lower layer of the filter layer is a loose stone filter layer with the depth of 5 m.
Further, the solar photovoltaic panel is a polysilicon type solar photovoltaic panel.
By adopting the technical scheme of the invention, the invention has the beneficial effects that: compared with the prior art, the solar energy is converted into the electric energy, the electric energy is provided for the electric equipment in the building energy comprehensive utilization system, the power generation device of the solar photovoltaic panel can perform auxiliary power supply so as to further reduce the energy consumption, the electric energy is provided for the operation of the submersible pump in the well and the electric energy consumption of the whole building, and the effects of being warm in winter and cool in summer and self-sufficient in energy consumption are achieved in the building. The method forms a comprehensive building energy utilization system, and realizes energy conservation and environmental protection by collecting and utilizing rainwater and fully absorbing and utilizing natural energy such as solar energy, underground energy and the like.
Drawings
FIG. 1 is a schematic diagram of an application of a building energy recycling system provided by the present invention;
FIG. 2 is a schematic view of a water well in a building energy recycling system provided by the present invention;
FIG. 3 is a view illustrating the installation of a solar photovoltaic panel in the system for recycling building energy according to the present invention;
FIG. 4 is an enlarged view of the solar photovoltaic panel in the building energy recycling system according to the present invention;
FIG. 5 is a top view of a photovoltaic roof truss in a building energy recycling system provided by the present invention;
FIG. 6 is a partial schematic view of a building energy recycling system according to the present invention;
FIG. 7 is a schematic view of the installation of a thermal insulating partition in the building energy recycling system provided by the present invention;
FIG. 8 is a simulated solar efficiency plot for a building energy recovery system according to the present invention;
fig. 9 is a parameter selection diagram of a submersible pump in the building energy recycling system provided by the invention.
The solar energy water-saving building comprises a water storage pool 1, a rainwater tank 2, a solar photovoltaic panel 3, a photovoltaic panel roof truss 4, a water well 5, a water well 6, a concrete water well with a hole 7, a stream stone filtering layer 8, a scattered stone filtering layer 9, a steel keel framework 10, a rainwater pipe 11, a heat preservation partition plate 12, a light partition plate 13 and a submersible pump.
Detailed Description
Specific embodiments of the present invention will be further described with reference to the accompanying drawings.
As shown in the figure, the building energy recycling system comprises a solar energy utilization system and a rainwater recycling system, wherein the rainwater recycling system comprises a rainwater tank 2 arranged on one side of a roof, a water heat-insulation interlayer arranged below the roof and a water storage tank 1 arranged on the ground, and the rainwater tank 2 is communicated with the water storage tank 1 through a rainwater pipe 10; a water well is arranged in the water storage tank 1, and water in the water well 5 is communicated with the water heat-preservation interlayer through a submersible pump 13;
the solar energy utilization system comprises a photovoltaic plate roof truss 4 arranged on the top surface of the roof, a solar photovoltaic plate 3 is arranged on the photovoltaic plate roof truss 4, the solar photovoltaic plate 3 is electrically connected with the submersible pump 13,
the photovoltaic plate roof truss 4 and the water heat-preservation interlayer jointly regulate the temperature inside the building. The solar photovoltaic panel 3 is a polysilicon type solar photovoltaic panel 3.
The lower part of the water well 5 is provided with holes, a circular ring-shaped filter layer is laid around the water well 5, the upper layer of the filter layer is a brook stone filter layer 7, the lower layer of the filter layer is a stone dispersing filter layer 8, and rainwater in the water storage tank 1 permeates into the water well 5 through the tank bottom, the brook stone filter layer 7 and the stone dispersing filter layer 8. Stones in the stream or the end-stream inkstone. The rain gutter 2 is open at the top and is annularly arranged around the roof.
The water heat-insulation interlayer is arranged below the roof, the submersible pump 13 is arranged in the water well 5, the floating ball valve linkage device is arranged in the water heat-insulation interlayer, and when the water level in the water heat-insulation interlayer reaches a certain height, the floating ball valve rises and the submersible pump is closed. Rainwater enters a water storage tank 1, a water well 5 is built in the water storage tank 1, the rainwater permeates into the water well 5 through a stream stone filtering layer 7 at the bottom of the tank and around the water well 5, the temperature is constant when the rainwater reaches the water well 5, and a submersible pump 13 pumps well water to a water heat-insulating interlayer on the roof to adjust the top temperature of a building.
When the outdoor temperature difference is large, water in the water well 5 is pumped into the water heat-insulating interlayer below the roof through the submersible pump 13. The large outdoor temperature difference means that the temperature difference between the indoor and the outdoor is large in the daytime in summer or at night in winter, and the well water temperature is moderate and is beneficial to heat preservation.
The photovoltaic plate roof truss is characterized in that the photovoltaic plate roof truss 4 is in a pitched roof style, the solar photovoltaic plate 3 is arranged on a south slope, an east slope and a west slope of the photovoltaic plate roof truss, and the solar photovoltaic plate is electrically connected with electric equipment inside a building. In the southern hemisphere, the solar photovoltaic panel 3 is arranged on the north slope, the east slope and the west slope of the roof.
Photovoltaic board roof truss 4 is including the steel joist skeleton 9 that the slope set up, on steel joist skeleton 9 was fixed in the house side wall post, steel joist skeleton 9 was equipped with solar photovoltaic board 3's installing zone, and the steel joist skeleton 9 upper berth outside the installing zone is equipped with light baffle 12. One layer of spliced heat-insulation shelf is arranged between the water heat-insulation interlayer and the photovoltaic plate roof truss 4, and the spliced heat-insulation shelf is composed of stainless steel section steel and light partition plates and used for reducing water evaporation of the water heat-insulation interlayer and facilitating maintenance of the solar photovoltaic plate 3. The solar photovoltaic panel 3 shields heat caused by direct solar radiation in summer, supplies power to the building and also supplies power to the submersible pump 13.
The solar photovoltaic panel 3 is embedded into the installation area, and structural glue is bonded around the solar photovoltaic panel 3 and between the light shelves.
Specifically, taking the building model in the figure as an example, as shown in fig. 1 and 2, a rain gutter 2 for collecting rain water and a DN50 rain pipe 10 communicated with the rain gutter 2 are arranged above the building model, and the top of the rain gutter 2 is open and is annularly distributed around the roof. Storing the collected rainwater in a water storage tank 1 with the length of 15m, the width of 8m and the depth of 2m, wherein the depth of a water well 5 is 13m and the diameter of the water well is 3m, 10 meters above the water well 5 is a prefabricated concrete well, and 3 meters below the water well 5 is a prefabricated concrete well 6 with holes. Annular filter layers with the inner diameter of 3m and the outer diameter of 9m are paved around the water well 5, the upper layer of the filter layer is a stream stone filter layer 7 with the depth of 6m, and the lower layer of the filter layer is a loose stone filter layer 8 with the depth of 5 m. The lower part of the roof of the building is provided withHeight of 300mm and area of 147.88m2The water heat-insulating interlayer. A heat-insulating partition plate 11 is arranged above the water heat-insulating partition layer, the heat-insulating partition plate 11 is a stainless steel section steel partition plate, the specification of the stainless steel section steel is 25 x 50, the thickness of the stainless steel section steel is 5mm, the thickness of the heat-insulating partition plate 11 is 1000mm x 1000mm, and the thickness of the heat-insulating partition plate is 50 mm.
Calculating the area of the water heat-insulation interlayer: 14.9 × 14.6-10.8 × 1.8-9.3 × 5.4 ═ 147.88m2
And (3) calculating the volume of the water heat-insulation interlayer: 147.88X 0.3 ═ 44.364m3
Rainwater stored in the pond permeates into the water well 5 through the stream stone filtering layer 7 and the stone dispersing filtering layer 8 at the bottom of the pond and around the water well 5, and heat is dissipated out through the ground in the permeating process to be cooled, and when the rainwater reaches the well, the rainwater becomes well water with constant temperature. The rainwater that utilizes the deposit is in summer daytime and winter night time with the comparatively invariable well water of well temperature through immersible pump 13 in the well pump under the roof heat preservation interlayer, has installed a ball-cock assembly in the water heat preservation interlayer, and when the water level reachd certain requirement, the ball-cock assembly rose, causes the water pump starting switch to close, and the top temperature regulation of building is then carried out to water heat preservation interlayer to reduce the cold and hot load energy consumption that the building gived off from the top summer daytime and winter night.
The parameters of the submersible pump 13 are selected as shown in fig. 9.
The energy saving in summer by using the system of the invention is calculated as follows:
setting K, the heat transfer coefficient of the upper floor of the water heat-insulation interlayer; selecting 0.65W/(m2℃);
setting F, the heat transfer area of the upper floor of the water heat insulation interlayer; presetting 147.88 square meters;
tn, water temperature; presetting to 18 ℃;
twn, bulk temperature; presetting to be 40 ℃;
α, selecting 0.9 as the temperature difference correction coefficient of the upper floor of the water heat-insulating interlayer;
t, one-day heat exchange time; preset to 10 h.
The electric quantity is saved in one day:
Q=αKF(twn-tn)=0.9×0.65×147.88×(40-18)=1903.2w;
1.9032kw × 10h 19.032 kw.h/day.
The winter energy saving is calculated as follows:
setting K, the heat transfer coefficient of the upper floor of the water heat-insulation interlayer; selecting 0.65W/(m2℃);
setting F, the heat transfer area of the upper floor of the water heat insulation interlayer; presetting 147.88 square meters;
tn, water temperature; presetting to 18 ℃;
twn, bulk temperature; presetting to 10 ℃;
α, selecting 0.9 as the temperature difference correction coefficient of the upper floor of the water heat-insulating interlayer;
t, one-day heat exchange time; preset to 10 h.
The electric quantity is saved in one day:
Q=αKF(tn-twn)=0.9×0.65×147.88×(18-10)=692.08w
0.692kw × 10h ═ 6.92 kw.h/day
In conclusion, the water insulation layer can reduce the power loss of about 19.032kw.h in summer and about 6.92kw.h in winter.
The electric equipment for the building generally adopts commercial power for power supply, and the power generation device of the solar photovoltaic panel 3 of the model can perform auxiliary power supply so as to further reduce energy consumption. And provides this power to the operation of submersible pump 13 in the well and the power consumption of the entire building, and may also provide surplus power to the mains supply system. The internal of the building can achieve the effects of being warm in winter and cool in summer and self-sufficient in energy consumption. The house building form forms a building energy comprehensive utilization system, and energy conservation and environmental protection are realized by collecting and utilizing rainwater and separately absorbing and utilizing natural energy sources such as solar energy sources, underground energy sources and the like.
As shown in fig. 3 and 4, a polysilicon type 1500mm 750mm solar photovoltaic panel 3 is installed on the south slope, east slope and west slope of the roof of the building. In order to enable the solar photovoltaic panel 3 to generate enough electricity, a slope roof type photovoltaic panel roof truss 4 is arranged on the water insulation layer. On one hand, the number of the photovoltaic panels on the roof is increased, and on the other hand, the attractiveness of the whole building is improved.
Firstly welding H-shaped stainless steel section steel with the specification of 25 x 50 and the thickness of 5mm, building a steel keel framework 9, then fixing the steel keel framework 9 on an external wall column, and bearing the whole keel is stressed by the external wall column. And reserving an installation area for placing the solar photovoltaic panel 3, paving the rest positions without the solar photovoltaic panel 3 with a light partition plate 12 with the thickness of 20-30mm, fixing the light partition plate 12 on the steel keel framework 9 by using bolts, and bonding gaps between the light partition plates 12 by using sealing structure glue to prevent rainwater from leaking. After the slope roof type photovoltaic plate roof truss 4 is built, the solar photovoltaic plates 3 are embedded into the roof one by one, structural adhesive is arranged on the periphery of each photovoltaic plate, and waterproof measures are taken.
In summer, the heat caused by direct solar radiation is reduced by the shielding of the photovoltaic panel, and the consumption of cold load in a house in summer is further reduced. And the solar energy directly radiated by the roof is converted into electric energy through the photovoltaic panel, the original solar energy unfavorable in summer is converted into required electric energy, and the electric energy is provided for electric equipment in the building energy comprehensive utilization system, wherein the electric equipment can be a submersible pump 13, an electric control valve, a sensor or equipment for illumination, monitoring and the like.
Through relevant data consulting and calculation, the generated energy and the generating efficiency of the photovoltaic panel and the photovoltaic film are very high-efficient. The photovoltaic panel is used for generating electricity, so that the necessary electric energy in the building can be guaranteed to be used by the electric equipment of the whole system. And secondly, more surplus electric energy can be generated, the energy can be sold, the highest level of energy can be fully utilized, and the monocrystalline silicon, the polycrystalline silicon and the thin film are compared as follows:
Figure BDA0002247899430000081
TABLE 1
The solar panels in the current market are commonly provided with 3 types: monocrystalline silicon type, polycrystalline silicon type, and thin film type.
Calculating the generated energy of the photovoltaic panel:
the solar efficiency is assumed to be as shown in figure 8,
the sunshine efficiency of the south slope is 100 percent, 32 polycrystalline silicon type 1500mm 750mm solar photovoltaic panels 3 are arranged on the south slope, the sunshine time in summer is calculated according to 8 hours,
0.15kw/h × 8h × 32 ═ 38.4 kw.h/day.
The sunshine efficiency of the east slope is 93.9 percent, 25 polycrystalline silicon type 1500mm 750mm solar photovoltaic panels 3 are arranged on the east slope, the sunshine time in summer is calculated according to 8 hours,
0.15kw/h × 8h × 25 × 93.9% ═ 28.17 kw.h/day.
The sunshine efficiency of the west slope is 93.9 percent, 25 polycrystalline silicon type 1500mm 750mm solar photovoltaic panels 3 are arranged on the west slope, the sunshine time in summer is calculated according to 8 hours,
0.15kw/h × 8h × 25 × 93.9% ═ 28.17 kw.h/day.
Theoretical all photovoltaic panel generated energy: 38.4+28.17+28.17 ═ 94.74 kw.h/day,
actually, the power generation capacity of all photovoltaic panels is as follows: the energy conversion efficiency and consumption are calculated as 30%,
94.74 x (1-30%) -66.318 kw.h/day.
In conclusion, the actual power generation amount of all the photovoltaic panels per day is 66.318 kw.h.
The power consumption of the submersible pump 13 is calculated, and the liquid level descending height of the water storage tank 1 after water pumping is calculated as follows:
calculating the power consumption of the water pump:
the flow rate of the water pump is as follows: 4.17L/s-15.012 m3/h;
Water pumping time: 44.364 ÷ 15.012 ≈ 3 h;
power consumption amount: 2.2 × 3 ═ 2.2 kw.h;
the volume of the pool: 15 × 8 × 2 ═ 240m3
Volume of the water well 5: (13-2) × π × 1.52 ═ 77.715m3
The descending height of the liquid level: 2- [ (240-44.364) ÷ 15X 8] ≈ 0.4 m.
In conclusion, the power consumption of water is 2.2kw.h every time the water is pumped, the liquid level of the water storage tank 1 is reduced by about 0.4m, the one-day power generation amount of the roof photovoltaic panel is about 66.318kw.h, and through comparison, the power generation amount is completely enough to support the operation of equipment, and the electric quantity is surplus.
Therefore, the building model can efficiently utilize rainwater storage, so that the temperature inside the building can be adjusted, the energy utilization rate is high, and the energy is saved and the efficiency is high.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (9)

1. A building energy recycling system comprises a solar energy utilization system and a rainwater recycling system, and is characterized in that the rainwater recycling system comprises a rainwater tank arranged on one side of a roof, a water heat-preservation interlayer arranged below the roof and a water storage tank arranged on the ground, and the rainwater tank is communicated with the water storage tank through a rainwater pipe; a water well is arranged in the water storage pool, and water in the water well is communicated with the water heat-preservation interlayer through a submersible pump;
the solar energy utilization system comprises a photovoltaic plate roof truss arranged on the top surface of the roof, a solar photovoltaic plate is arranged on the photovoltaic plate roof truss and is electrically connected with the submersible pump,
the photovoltaic plate roof truss and the water heat-insulation interlayer jointly adjust the temperature inside the building.
2. The system as claimed in claim 1, wherein the water well has holes at its lower part, and a circular filter layer is laid around the water well, the upper layer of the filter layer is a brook stone filter layer, the lower layer of the filter layer is a stone dispersing filter layer, and rainwater in the water storage tank permeates into the water well through the bottom of the water storage tank, the brook stone filter layer and the stone dispersing filter layer.
3. The building energy recycling system of claim 2, wherein the water insulation barrier is provided with a float valve linkage device, when the water level in the water insulation barrier reaches a certain height, the float valve rises and the submersible pump is turned off.
4. The building energy recycling system of claim 2, wherein the photovoltaic roof truss is a pitched roof type, the solar photovoltaic panels are disposed on the south slope, east slope and west slope of the photovoltaic roof truss, and the solar photovoltaic panels are further electrically connected to the electric devices inside the building.
5. The building energy recycling system according to claim 4, wherein the photovoltaic panel roof comprises an obliquely arranged steel keel frame, the steel keel frame is fixed on the outer wall columns of the building, the steel keel frame is provided with an installation area of the solar photovoltaic panel, and a light partition board is paved on the steel keel frame outside the installation area.
6. The building energy recycling system of claim 5, wherein the solar photovoltaic panels are embedded in the installation area, and structural glue is bonded around the solar photovoltaic panels and between the light shelves.
7. The building energy recycling system according to claim 6, wherein a spliced insulation shelf is arranged between the water insulation interlayer and the photovoltaic panel roof, and the spliced insulation shelf is composed of stainless steel section steel and light partition plates.
8. The building energy recycling system of claim 1, wherein the solar photovoltaic panel is a polysilicon solar photovoltaic panel.
9. The building energy recovery system of claim 1, wherein the rain gutter is open at the top and is annularly arranged around the roof.
CN201911023319.5A 2019-10-25 2019-10-25 Building energy recycling system Pending CN110847522A (en)

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Application publication date: 20200228