CN112082274A - Composite type Lambert wall capable of effectively reducing heat loss - Google Patents

Composite type Lambert wall capable of effectively reducing heat loss Download PDF

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Publication number
CN112082274A
CN112082274A CN202011085849.5A CN202011085849A CN112082274A CN 112082274 A CN112082274 A CN 112082274A CN 202011085849 A CN202011085849 A CN 202011085849A CN 112082274 A CN112082274 A CN 112082274A
Authority
CN
China
Prior art keywords
wall
water
heat
indoor
flow channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011085849.5A
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Chinese (zh)
Inventor
周立群
梁瑞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lanzhou University of Technology
Original Assignee
Lanzhou University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lanzhou University of Technology filed Critical Lanzhou University of Technology
Priority to CN202011085849.5A priority Critical patent/CN112082274A/en
Publication of CN112082274A publication Critical patent/CN112082274A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00Solar heat collectors specially adapted for particular uses or environments
    • F24S20/60Solar heat collectors integrated in fixed constructions, e.g. in buildings
    • F24S20/66Solar heat collectors integrated in fixed constructions, e.g. in buildings in the form of facade constructions, e.g. wall constructions
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/40Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/50Solar heat collectors using working fluids the working fluids being conveyed between plates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00Arrangements for storing heat collected by solar heat collectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S70/00Details of absorbing elements
    • F24S70/20Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption
    • F24S70/225Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption for spectrally selective absorption
    • 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
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems

Abstract

The Lambertian wall is a typical passive solar technology, and can effectively reduce the energy consumption of buildings. The water wall system is also a classic building envelope because it allows both partial solar radiation into the building and thermal insulation at night using the high specific heat capacity of water. The invention combines the Lambert wall body and the water wall, and provides the composite Lambert wall body which can effectively reduce heat loss. The invention can utilize low-grade energy sources such as soil heat sources, natural water sources and the like at night, and low-temperature water is circulated in the water wall to reduce the heat loss of the building. The invention has simple structure and low cost, can effectively reduce indoor heat dissipation and ensure indoor thermal comfort.

Description

Composite type Lambert wall capable of effectively reducing heat loss
Technical Field
The invention relates to the technical field of solar building heat collection, in particular to a combined heating system of a water wall and a special Lambert wall.
Background
At present, most energy sources used in buildings are from fossil fuels, and the method not only greatly influences the energy safety of China, but also has negative influence on the environment. In order to reduce the excessive consumption of non-renewable energy in a building, researchers develop various researches, and combining a solar energy technology with the building is an important solution for developing renewable energy on a large scale and reducing the consumption proportion of traditional fossil energy in the building.
A particular lambertian wall is an effective way to utilize solar energy in the building sector. However, the Lambertian wall has some disadvantages, which limit its popularization and application. During the night or long cloudy days, a large amount of heat can be transferred from the interior of the room to the outside through the Lambertian wall, so that heat loss of the room is caused, energy consumption is increased, and the problem is particularly obvious in cold climate areas.
In cold winter, the temperature of the building envelope is obviously lower than the indoor temperature, and the building envelope is distributed in a gradient mode from the indoor to the outdoor. Especially, glass has a temperature close to the outdoor temperature because of poor heat insulation performance. However, people usually ignore the characteristic of non-uniform distribution of indoor heat environment in winter and only focus on using a heat source with a temperature higher than the indoor temperature to maintain the indoor temperature. In fact, the building can be insulated by using water at the temperature lower than room temperature, and indoor heat dissipation can be effectively reduced. If the soil heat source and the natural water source in the natural environment are fully utilized, the heat transferred from the indoor to the outside can be completely reduced, so that the demand of high-grade heat supply is reduced, and the heat supply energy consumption is further reduced.
Water walls are an effective solution for maintaining thermal comfort and reducing energy consumption of buildings. Water walls have unique advantages over other passive construction techniques (e.g., the use of high performance concrete, etc.) in that they allow some of the solar radiation to enter the building, thereby meeting daytime lighting needs. The waterwalls also have the ability to prevent large fluctuations in room temperature between day and night. It therefore has a great potential to maintain the thermal comfort of the building and to reduce energy consumption.
Disclosure of Invention
The invention aims at overcoming the defects of the existing Lambert wall, and particularly relates to a novel wall combining a water wall and the Lambert wall, which can effectively reduce the heat loss of the wall at night or in cloudy days.
In order to solve the technical problems, the technical scheme of the invention is as follows: a composite specially-Lambert wall body capable of effectively reducing heat loss comprises a heat collection and storage wall and a water wall system, wherein a space between the heat collection and storage wall and the water wall system is an air flow channel; an indoor lower vent is arranged at the bottom of the heat collection and storage wall, and an indoor upper vent is arranged at the top of the heat collection and storage wall; the lower baffle is arranged at the position of the indoor lower vent, and the upper baffle is arranged at the position of the indoor upper vent.
Furthermore, a heat collection plate is fixed on the outer surface of the heat collection and storage wall, and a solar energy absorption coating thin metal plate is sprayed on the surface of the heat collection and storage wall.
Furthermore, the main body of the heat collection and storage wall is 240mm clay bricks, and a 50mm polystyrene foam plate is arranged on the indoor side for internal heat insulation; the width selection range of the air flow channel is 100-200 mm.
Further, the water wall system comprises two high light-transmitting plates which can be polycarbonate plates, organic glass plates and the like; the space between the two plates is a water flow passage, the lower part of the water flow passage is provided with a water inlet, the upper part of the water flow passage is provided with a water outlet, and water flow is conveyed by a water conveying pump at the water inlet. The water delivery pump is a centrifugal output pump driven by a motor.
Further, the thickness of the high-light-transmitting plate material is 10-15 mm, and the visible light transmittance is greater than 80%; the width selection range of the water flow channel is 20-80 mm.
Further, the water source at the water inlet is low-temperature water (generally lower than indoor temperature and higher than ambient temperature), and the water source can be derived from a soil heat source, a natural water source and the like in natural environment.
Compared with the prior art, the invention has the following beneficial effects: the invention fully utilizes low-grade energy, and reduces the heat loss of the traditional Lambert wall body at night or in cloudy days in cold weather; the device has simple structure and is easy to realize.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic configuration diagram of an embodiment of the present invention.
Fig. 2 is a schematic diagram of the operation of the embodiment of the present invention in sunny days.
Fig. 3 is a schematic diagram of the operation of an embodiment of the present invention during the night (cloudy day).
The reference numbers in the figures illustrate: 1-heat collection and heat storage wall, 2-heat collection plate, 3-indoor lower vent, 4-indoor upper vent, 5-air flow channel, 6-upper baffle, 7-lower baffle, 8-high light transmission plate, 9-water flow channel, 10-water inlet, 11-water delivery pump, 12-water outlet and 13-enclosure structure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to specific embodiments and accompanying drawings.
On sunny days with sufficient irradiation, visible light and near infrared can reach the heat collecting plate 2 through the water wall (at the moment, the water flow channel 9 is in an emptying state), and the solar selective heat absorption coating on the heat collecting plate converts solar energy into heat energy. One part of the converted heat energy is used for heating the air in the air flow channel 5, and the other part of the converted heat energy is conducted to the indoor space through the heat collecting and accumulating wall 1. In the heat conduction process, part of heat is stored in the heat collecting and storing wall 1, and the other part of heat is conducted to the indoor. Meanwhile, the upper baffle 6 and the lower baffle 7 are in an open state, indoor low-temperature air enters the air flow channel 5 from the indoor lower vent 3 and is heated, and the heated air reenters the indoor space through the indoor upper vent 4 under the action of buoyancy, so that hot air is provided for the room. When the temperature in the room exceeds the comfortable temperature of the human body, two modes are available for adjusting the indoor temperature: (1) the opening degree of the upper baffle 6 and the lower baffle 7 can be adjusted to control the hot air flow; (2) the water wall system is activated to fill the water flow channels 9 with liquid, the presence of the water layer reduces the solar radiation transmittance and simultaneously reduces the temperature of the air flow channels 5. The above two adjustment methods can also be used simultaneously.
At night or in cloudy days, the indoor upper ventilation opening 3 and the indoor lower ventilation opening 4 are closed, and the heat stored in the heat collection and storage wall 5 can be used for indoor radiant heating. Meanwhile, the water wall system is started, and low-temperature water (higher than outdoor temperature and lower than indoor temperature) is introduced into the water flow channel 9, so that heat transfer from indoor to outdoor can be blocked, and heat loss of the heat collection and storage wall 1 is reduced. Can directly use lake water source as low temperature heat source.
The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides an effectively reduce compound special lambertian wall body of heat loss which characterized in that: including thermal-arrest heat accumulation wall (1) and waterwall system, the space between thermal-arrest heat accumulation wall (1) and the waterwall system is air runner (5), thermal-arrest heat accumulation wall (1) bottom is equipped with indoor vent (3) down, and the top is equipped with indoor vent (4) of going up, indoor vent (3) down, indoor vent (4) punishment of going up do not are provided with down baffle (7) and last baffle (6).
2. A composite lambertian wall effective at reducing heat loss according to claim 1, wherein: the outer surface of the heat collection and storage wall (1) is fixed with a heat collection plate (2) which is a thin metal plate with a solar selective absorption coating sprayed on the surface.
3. The heat collecting and accumulating wall (1) according to claim 2, characterized in that: the heat collection and storage wall (1) is structurally characterized in that a main body is 240mm clay bricks, and a 50mm foamed polystyrene plate is arranged on the indoor side for internal heat insulation; the width selection range of the air flow channel (5) is 100-200 mm.
4. A composite lambertian wall effective at reducing heat loss according to claim 1, wherein: the water wall system comprises two high-light-transmitting plates (8), a water flow channel (9) is arranged in the space between the two high-light-transmitting plates, a water inlet (10) is formed in the lower portion of the water flow channel (9), a water outlet (12) is formed in the upper portion of the water flow channel, and water flow is conveyed through a water conveying pump (11) at the position of the water inlet (10).
5. The waterwall system of claim 4, wherein: the high light-transmitting plate (8) is made of a polycarbonate plate or an organic glass plate, the thickness of the high light-transmitting plate is 10-15 mm, and the visible light transmittance is greater than 80; the width selection range of the water flow channel (9) is 20-80 mm.
6. The waterwall system of claim 4, wherein: the water delivery pump (11) is a centrifugal output pump driven by a motor.
CN202011085849.5A 2020-10-12 2020-10-12 Composite type Lambert wall capable of effectively reducing heat loss Pending CN112082274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011085849.5A CN112082274A (en) 2020-10-12 2020-10-12 Composite type Lambert wall capable of effectively reducing heat loss

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011085849.5A CN112082274A (en) 2020-10-12 2020-10-12 Composite type Lambert wall capable of effectively reducing heat loss

Publications (1)

Publication Number Publication Date
CN112082274A true CN112082274A (en) 2020-12-15

Family

ID=73730970

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011085849.5A Pending CN112082274A (en) 2020-10-12 2020-10-12 Composite type Lambert wall capable of effectively reducing heat loss

Country Status (1)

Country Link
CN (1) CN112082274A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113432311A (en) * 2021-06-09 2021-09-24 江苏大学 Greenhouse solar heat collection system and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113432311A (en) * 2021-06-09 2021-09-24 江苏大学 Greenhouse solar heat collection system and method

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