CN210086515U - A passive non-transparent wall energy-saving building system - Google Patents

Abstract

The utility model discloses a passive form non-printing opacity wall body energy-conserving building system aims at the low-grade solar radiation energy that make full use of sunny side building surface obtained and realizes reducing building shady side wall body energy consumption to finally reduce the operation and the use cost of building. The heat exchange system comprises a non-light-transmitting wall body and a loop heat pipe heat exchange system, wherein the loop heat pipe heat exchange system is a closed circulating system formed by sequentially communicating an evaporation section, a steam ascending section, a condensation section and a liquid descending section, and a phase change working medium is arranged in the loop heat pipe heat exchange system. The evaporation section is positioned in a wall outer plastering layer or a slope surface layer of the sunny side of the non-light-transmitting wall, and the condensation section is positioned in a structural layer of the shady side of the non-light-transmitting wall or a roof. The utility model discloses a whole cyclic process of system need not any mechanical drive equipment, can effectively promote north wall temperature winter, has realized that solar energy passive form utilizes and utilizes low skill technical means to realize reducing the purpose of shady face energy consumption.

Description

A passive non-transparent wall energy-saving building system

technical field

The utility model relates to the technical field of building energy saving, in particular to a passive non-translucent wall energy saving building system.

Background technique

In recent years, passive ultra-low energy buildings have gradually emerged in my country, and have gradually become a new development direction under the background of high building energy consumption. Reducing the building's own load is one of the main measures for building energy conservation.

At present, the main technical realization method of ultra-low energy consumption building is to rely on a large number of various building insulation materials to increase the heat transfer resistance of the envelope structure. Although this method reduces building energy consumption on the surface, it still has the following shortcomings in application: First, this technical solution is not suitable for some areas, such as areas with hot summer and cold winter, because building insulation materials Although the increase of the heating load reduces the heating load of the building in winter, it makes the indoor heat of the building unable to dissipate in time in summer, resulting in an increase in the building load due to the increase in the load of the cooling equipment. Secondly, from the perspective of the whole life cycle of buildings, the large-scale application of thermal insulation materials will inevitably lead to huge energy consumption in its production and transportation links. Finally, excessively thick thermal insulation materials also bring fire hazards to the building, occupy a lot of building space, and the effect of the thermal insulation layer will gradually decline or even fail over time, requiring regular replacement, and there are also certain problems in safety and economy.

Solar energy is an abundant and easily available renewable energy. The rational application of solar energy to reduce building energy consumption is of great significance to enriching the ultra-low energy consumption building technology system. At present, the active thermal activated building system is a gradually emerging building energy system. It embeds fluid pipes in the envelope and uses active driving equipment such as mechanical pumps to drive the fluid to circulate in the building envelope. Heating or cooling is still high due to its maintenance and operating costs. Therefore, the technical problem of how to apply passive solar energy to reduce building energy consumption through low-tech technical means has not been well resolved.

Utility model content

The purpose of the utility model is to provide a passive non-light-transmitting wall energy-saving building system for the technical defects existing in the prior art, so as to make full use of the low-grade solar radiation energy obtained from the building surface on the sunny side to reduce the shady side of the building. Wall energy consumption, and ultimately reduce the operating and operating costs of the building.

The technical scheme adopted for realizing the purpose of the present utility model is:

A passive non-translucent wall energy-saving building system, comprising a non-transparent wall and a loop heat pipe heat exchange system, the loop heat pipe heat exchange system is composed of an evaporation section, a steam ascending section, a condensation section and a liquid descending section connected in sequence The closed cycle system is provided with a phase change working medium in the loop heat pipe heat exchange system.

The evaporation section is located in the exterior plastering layer or the side slope surface layer of the sun-facing side of the non-transparent wall, and the condensation section is located in the shadow surface of the non-transparent wall or the structural layer of the roof; so The position of the evaporation section is lower than the condensation section; the solar radiation heat absorption coefficient of the exterior plastering layer or the slope surface layer of the non-translucent wall facing the sun is greater than 0.5.

The part of the loop heat pipe heat exchange system located at the junction of the adjacent walls of the non-translucent wall is respectively provided with an outer-penetrating wall-penetrating sleeve or an outer-penetrating inner-wall-penetrating sleeve or an inner-penetrating inner-wall-penetrating sleeve.

The evaporation section is formed by a serpentine connection of a plurality of evaporation tubes, and the condensation section is formed by a serpentine connection of a plurality of condensation tubes.

The evaporation section is a single evaporation tube, and the condensation section is a single condensation tube.

The evaporating section is formed by a plurality of evaporating tubes arranged and connected along a parallel flow, and the condensation tube is formed by a plurality of condensation tubes arranged and connected along a parallel flow.

In the loop heat pipe heat exchange system on the first floor, the evaporation section is embedded in the slope surface layer, and the condensation section is embedded in the north wall structural layer of the non-transparent wall.

In the loop heat pipe heat exchange system located in the middle layer, the evaporation section is embedded in the outer plastering layer of the south wall of the non-transparent wall, and the condensation section is embedded in the structural layer of the north wall of the non-transparent wall .

In the loop heat pipe heat exchange system located on the roof, the evaporation section is embedded in the outer plastering layer of the south wall of the non-transparent wall, and the condensation section is embedded in the roof structure layer.

Metal powder or graphite is added to the material of the exterior plastering layer or the surface layer of the slope on the sunny side of the non-transparent wall, and the metal powder or graphite additive accounts for the exterior plastering layer or the slope of the wall. The composition of the surface layer material is less than 0.25% by weight.

Compared with the prior art, the beneficial effects of the present utility model are:

1. The energy-saving building system of the present invention is provided with a loop heat pipe heat exchange system, which can fully rely on the spontaneous circulation of the loop heat pipe heat exchange system to drive the internal phase-change working medium to carry out the sun-facing surface only if there is a slight temperature difference between the sunny side and the shady side. The heat transfer and transfer between the back side wall and the ultra-low temperature differential heat transfer condition realize heat transfer, make full use of free low-grade solar energy to solve the problem of relatively large energy consumption on the back side of the building, and is a technology for ultra-low energy consumption buildings. Implementation provides a reliable solution. The whole cycle process of the utility model does not need any mechanical driving equipment, which greatly reduces the usage of the ultra-low energy consumption building thermal insulation layer and the reduction of the building usable area caused by the excessively thick thermal insulation layer. The additional cost of replacing the insulation.

2. In the building system of the present utility model, the evaporation section of the loop heat pipe heat exchange system is arranged in the outer plastering layer of the south wall and the south side slope surface layer, and the condensation section of the loop heat pipe heat exchange system is arranged in the north wall and roof structure. The low-grade solar energy can be fully utilized to solve the problem of relatively large energy consumption on the shady side of the building.

Description of drawings

Fig. 1 shows the east schematic diagram of the passive non-light-transmitting wall energy-saving building system connected in a serpentine shape of the present utility model;

Fig. 2 shows the west schematic diagram of the passive non-translucent wall energy-saving building system connected in a serpentine shape of the present invention;

3 is a schematic diagram showing the south direction of the passive non-light-transmitting wall energy-saving building system connected in a serpentine shape of the present invention;

4 is a schematic diagram showing the north direction of the passive non-translucent wall energy-saving building system connected in a serpentine shape of the present invention;

5 is a schematic diagram showing the east direction of the passive non-light-transmitting wall energy-saving building system of the utility model;

6 is a schematic diagram of the westward direction of the passive non-translucent wall energy-saving building system of the present invention;

7 is a schematic diagram showing the south direction of the passive non-translucent wall energy-saving building system with a single tube of the present invention;

8 is a schematic diagram showing the north direction of the passive non-light-transmitting wall energy-saving building system of the present invention;

Figure 9 is a schematic diagram of the structure of the outer casing through the outer wall;

Figure 10 shows a cross-sectional view of the outer wall bushing;

Figure 11 is a schematic diagram of the structure of the outer casing and inner wall casing;

Figure 12 shows a cross-sectional view of the outer casing through the inner wall;

Figure 13 shows a schematic diagram of the structure of the inner through-wall casing;

Figure 14 shows a cross-sectional view of the inner through-wall bushing.

Detailed ways

The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

The passive non-light-transmitting wall energy-saving building system of the utility model applies the heat pipe principle to the building field, utilizes the absorption of solar energy by the heat pipe and the phase change driving force to realize no external power cycle, has a simple structure, and can reduce the use cost.

The schematic diagrams of the passive non-translucent wall energy-saving building system of the present invention are shown in Figures 1 to 8, including non-translucent walls and a loop heat pipe heat exchange system. The loop heat pipe heat exchange system is composed of evaporation section 1, The steam ascending section 2, the condensing section 3 and the liquid descending section 4 are connected in sequence to form a closed circulation system, and a phase change working medium is arranged in the loop heat pipe heat exchange system. The loop heat pipe heat exchange system adopts different working modes according to the energy saving requirements of the building. The following takes the heating season working mode as an example to illustrate.

According to the different working modes of the loop heat pipe heat exchange system, the positions of the evaporation section 1 and the condensation section 3 are different. Taking the working mode of the heating season as an example, the evaporation section 1 is located in the plastering layer or the side slope surface layer 7 on the sunny side of the non-translucent wall, and the condensation section 3 is located in the non-translucent wall. in the shady side of the body or in the structural layer of the roof 8. The position of the evaporation section 1 is lower than the condensation section 3 . The solar radiation heat absorption coefficient of the exterior plastering layer or the slope surface layer of the non-translucent wall facing the sun is greater than 0.5. The steam rising section 2 and the condensation section 3 can be arranged in the west wall or the east wall of the non-translucent wall.

The part of the loop heat pipe heat exchange system located at the junction of the adjacent walls of the non-translucent wall is respectively provided with an outer through-wall sleeve 9 or an outer through-inner through-wall sleeve 10 or an inner through-in-wall sleeve. Tube 11.

In the system of the present invention, the evaporation section and the condensation section can adopt different structures, for example, the evaporation section 1 is formed by serpentine connection of a plurality of evaporation tubes, and the condensation section 3 is formed by a serpentine connection of a plurality of condensation tubes. The schematic diagrams are shown in Figures 1-4. Or: the evaporation section 1 is a single evaporation tube, and the condensation section 3 is a single condensation tube, the schematic diagrams of which are shown in FIGS. 5-8 . Or: the evaporating section is formed by a plurality of evaporating tubes arranged and connected along a parallel flow, and the condensation tube is formed by a plurality of condensation tubes arranged and connected along a parallel flow. The evaporation section and the condensation section can also be of other structures. The steam ascending section 2 and the condensing section 3 use a single connecting pipe or a connecting pipeline of other structural forms.

The non-light-transmitting wall body in the embodiment of the present utility model is composed of an outer plastering layer, a thermal insulation layer and a structural layer in sequence from the inside to the outside. The loop heat pipe heat exchange system is installed in different positions of the building according to different usage requirements of the building. That is: in the loop heat pipe heat exchange system located on the first floor, the evaporation section 1 is embedded in the slope surface layer 7, and the condensation section 3 is embedded in the north wall 6 of the second layer of the non-transparent wall. in the structural layer. In the loop heat pipe heat exchange system located in the middle layer, the evaporation section 1 is embedded in the outer plastering layer of the non-translucent wall south wall 5 of this layer, and the condensation section 3 is embedded in all the layers of the upper layer. in the structural layer of the north wall 6 of the non-transparent wall. In the loop heat pipe heat exchange system located on the top floor, the evaporation section 1 is embedded in the outer plastering layer of the south wall of the non-transparent wall on the top floor, and the condensation section 3 is embedded in the structural layer of the roof 8 .

In order to ensure the absorption rate of solar energy, metal powder or graphite is added to the material of the exterior plastering layer or the slope surface layer of the non-transparent wall facing the sun, and the metal powder or graphite additive accounts for the wall. The material composition of the outer plastering layer or the slope surface layer is less than 0.25% by weight, so that the surface solar radiation heat absorption coefficient is greater than 0.5.

When the pipeline of evaporation section 1 is located in the plastering layer outside the south wall (that is, outside the thermal insulation layer), the pipeline of the steam rising section and the pipeline of the liquid descending section are located in the structural layer of the east wall and the west wall respectively (that is, inside the thermal insulation layer). ), when the condensing section pipeline is located in the structural layer of the north wall (also within the insulation layer), the connection between the evaporation section pipeline, the steam rising section pipeline and the liquid descending section pipeline shall use an outer through-wall casing 10. On the other hand, the connection between the steam ascending section pipeline and the liquid descending section pipeline and the condensing section pipeline adopts an inner through-wall casing 11 .

When the evaporation section pipeline is located in the plastering layer outside the south wall (that is, outside the thermal insulation layer), the steam rising section pipeline and the liquid descending section pipeline can be located in the structural layer of the east and west walls (that is, inside the thermal insulation layer) It can also be located in the outer plastering layer of the east wall and west wall (that is, outside the thermal insulation layer), and the condensation section pipeline is located in the north wall structural layer (also inside the thermal insulation layer). At this time, the evaporation section pipeline and the steam rise The connection between the section pipeline and the liquid descending section pipeline can use the outer through-wall casing 10 or the outer through-wall casing 9, while the steam ascending section pipeline and the liquid descending section pipeline are connected with the inner wall casing 10. The connection of the pipelines in the condensation section can use the inner through-wall casing 11 or the outer through-in-wall casing 10 .

The outer wall-penetrating sleeve 9 has a two-layer structure, as shown in Figs. 9 to 10. The inner layer is an anti-extrusion rubber sleeve layer 9-1, and the outer layer is a metal steel pipe layer 9-2.

The outer wall-penetrating sleeve 10 has a three-layer structure, and its schematic diagrams are shown in Figures 11-12. The inner layer is an anti-extrusion rubber sleeve layer 10-1, and the middle layer is a metal steel pipe layer 10-2. The outer layer is the thermal insulation layer 10-3.

The inner wall penetrating sleeve 11 has a two-layer structure, as shown in Fig. 13-Fig. 14, the inner layer is an anti-extrusion rubber sleeve layer 11-1, and the outer layer is a metal steel pipe layer 11-2.

The phase change working medium described in the utility model can be alcohols (such as ethanol, acetone, etc.), refrigerants for air conditioning (such as R22, R134a, R410a, etc.) or natural working fluids (such as water, carbon dioxide, etc.). The charge ratio of the phase change working medium (charge volume/volume of the evaporation section of the loop heat pipe heat exchange system) is 20-150%. For smooth flow, the slope of the tube body of the evaporation section along the flow direction ranges from +0.5% to +5.0%, and the slope range of the tube body of the condensation section along the flow direction ranges from -0.5% to -5.0%.

The heating season working mode of the passive non-translucent wall energy-saving building system of the present invention is as follows: during the daytime in winter, the plastering layer outside the south wall and the surface layer of the south side slope continuously accumulate heat and gradually heat up under the action of solar radiation. At this time, the temperature rise of the south wall is more obvious than that of the north wall, and the heat transfer temperature difference between the north and south walls gradually increases. As for the traditional building envelope, since the outer plastering layer of the south wall is placed outside the outer thermal insulation layer, this part of the heat is basically not used effectively and is dissipated in the surrounding environment. The thermally activated building system of the present invention makes full use of this underutilized low-grade renewable energy. Due to the heating of the plastering layer outside the south wall and the surface layer of the south side slope, the phase change working medium in the evaporation section is heated and evaporated into a vaporous working medium, and accumulates at the outlet of the evaporation section and the steam rising section. When the temperature difference between the north and south walls reaches a certain value (that is, when the phase change force can completely overcome the flow resistance of the pipeline circulation), the vaporous working medium will carry heat and enter the condensation section through the steam ascending section, and the vaporous working medium will phase-change and condense in the condensation section. It becomes a liquid working medium and releases heat to the structural layer to achieve the purpose of heating the north wall and reducing the load of the north wall. The liquid working medium after phase change condensation enters the evaporation section through the liquid descending section pipeline to complete the working medium flow cycle.

To sum up, the entire cycle process of the passive non-translucent wall energy-saving building system of the present invention does not require any mechanical driving equipment, can effectively increase the temperature of the north wall in winter, realizes the passive utilization of solar energy, and uses low-tech technical means to reduce the shade. the purpose of energy consumption.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications can be made without departing from the principles of the present invention. Improvement and modification should also be regarded as the protection scope of the present invention.

Claims (9)

1. a passive non-translucent wall energy-saving building system, is characterized in that, comprises non-translucent wall and loop heat pipe heat exchange system, and described loop heat pipe heat exchange system is composed of evaporation section, steam rising section, condensation section and The liquid descending sections are connected in sequence to form a closed circulation system, and a phase change working medium is arranged in the loop heat pipe heat exchange system. 2 . The passive non-translucent wall energy-saving building system according to claim 1 , wherein the evaporation section is located in the exterior plastering layer or the slope surface layer of the sun-facing side of the non-translucent wall. 3 . , the condensation section is located in the shady side of the non-translucent wall or the structural layer of the roof; the position of the evaporation section is lower than the condensation section; the exterior of the wall on the sunny side of the non-transparent wall is plastered The solar radiation heat absorption coefficient on the surface of the layer or slope surface layer is greater than 0.5. 3. The passive non-translucent wall energy-saving building system according to claim 1 or 2, characterized in that, the parts of the loop heat pipe heat exchange system located at the junction of adjacent walls of the non-translucent wall are respectively arranged There are external wall bushings or external wall bushings or inner wall bushings. 4 . The passive non-translucent wall energy-saving building system according to claim 3 , wherein the evaporation section is formed by serpentine connection of a plurality of evaporation tubes, and the condensation section is formed by a serpentine connection of a plurality of condensation tubes. 5 . made. 5 . The passive non-translucent wall energy-saving building system according to claim 3 , wherein the evaporation section is a single evaporation tube, and the condensation section is a single condensation tube. 6 . 6 . The passive non-translucent wall energy-saving building system according to claim 3 , wherein the evaporation section is formed by a plurality of evaporation tubes arranged and connected along parallel flows. 7 . 7. The passive non-transparent wall energy-saving building system according to claim 2, characterized in that, in the loop heat pipe heat exchange system located on the first floor, the evaporation section is embedded in the slope surface layer, so The condensation section is embedded in the north wall structural layer of the non-transparent wall. 8 . The passive non-translucent wall energy-saving building system according to claim 3 , wherein, in the loop heat pipe heat exchange system located in the middle layer, the evaporation section is embedded in the south wall of the non-translucent wall. 9 . In the outer plastering layer, the condensation section is embedded in the north wall structural layer of the non-transparent wall. 9 . The passive non-translucent wall energy-saving building system according to claim 3 , wherein in the loop heat pipe heat exchange system located on the roof, the evaporation section is embedded outside the south wall of the non-translucent wall. 10 . In the plastering layer, the condensation section is embedded in the roof structure layer.

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