With the development of world economy, new progress and breakthroughs have been made in urban construction, and the number of high-rise buildings has also increased dramatically.
Tower building has largely saved land resources, but there are still many in the process of construction.Such as the low efficiency of natural lighting applications, the lack of smooth indoor ventilation, etc.
Therefore, it is necessary to continuously strengthen and improve, so as to effectively achieve natural lighting of high-rise buildings.
At present, there are some problems and shortcomings in the natural lighting design of high-rise buildings. It requires the research and improvement of relevant staff.
With the constant changes of people’s ideas, people pay more and more attention to energy-saving issues.
Therefore, the design of natural lighting meets the requirements. The needs of the development of the current era, in line with the actual needs of sustainable social development, have far-reaching significance for the long-term stable development of world’s economy.
2 lighting design requirements for high-rise buildings
2.1 To meet people’s lighting needs
In daily life, most of people’s activities are carried out indoors. Therefore, in the process of designing the natural lighting of high-rise buildings, people’s actual needs should be fully considered.
For example, the direct lighting of living rooms and study room in high-rise buildings needs to satisfy the degree of visual illumination.
High-rise office buildings should make the natural lighting conform to the construction.
Architectural design and the requirements of people’s work can prevent people’s work efficiency from being reduced due to glare or dim light.
Perfect lighting design can greatly reduce the occurrence of large changes in light intensity in indoor working areas.
2.2 Meeting people’s aesthetic needs
The suitable indoor environment needs to meet the requirements of uniform lighting, no glare, and small change in brightness. There are no obstructed items on the top of the high-rise building, which can provide a better light environment for the interior.
This not only satisfies people’s aesthetic needs, but also Conducive to people’s vision and physical and mental health.
2.3 Conform to the social development trend of energy conservation
At present, the electricity consumed in high-rise office buildings accounts for about 30% of the total electricity consumption.
At the same level of illumination, natural light consumes less heat than lighting tools, thus greatly reducing indoor temperature regulation and energy consumption.
It is obviously that the application of natural light illumination is an important way to save energy in high-rise buildings.
2.4 Environmentally friendly requirements
In the process of designing natural lighting for high-rise buildings, we must pay special attention to the protection of the environment, eliminate the indoor mildew and control the indoor bacteria as much as possible, and help the photosynthesis of plants, thus effectively improving people’s work and Living environment.
When designing lighting, you should not neglect the pollution of the environment. It is necessary to apply a glass curtain wall with a combination of structure and technology to minimize the pollution caused by light.
3 The practical significance of natural lighting in high-rise buildings
First of all, the natural lighting design of high-rise buildings must conform to the local geographical environment, and change according to the change of the height angle of the sun’s rays, and then design the lighting method according to the architectural characteristics.
Second, we need to consider the influence of cloudiness, light intensity and other factors.
Third, to ensure the satisfaction of human aesthetic needs, choose scientific and reasonable lighting materials. Only materials with quality requirements can provide high-quality lighting services, and can also form a good light energy and electrical energy cycling transformation relationship.
This greatly improves the energy efficiency of high-rise buildings, reduces the number of applications of glass curtains, and greatly alleviates a series of problems caused by light pollution.
Fourth, the design of windowsills and balconies of high-rise buildings needs to facilitate people’s contact with the outside world, thus effectively alleviating psychological pressure, improving work efficiency, and at the same time making indoor decorative items have certain light and shadow effects. Natural lighting must be able to be regulated at any time.
When people collect natural light, they should adjust and control according to the specific conditions of the weather and the specific characteristics of the work, so that they can meet the requirements of energy conservation and environmental protection.
Fifth, the lighting of high-rise buildings needs to consider all aspects of indoor requirements, such as thermal comfort, air quality, etc. Only by comprehensively considering these influencing factors can the natural lighting design of high-rise buildings meet the needs of people.
4 High-rise building natural lighting design and related energy-saving technologies
4.1 High-rise building natural lighting design
The following design elements can be applied to the natural lighting design work of high-rise buildings:
(1) Use skylights.
In high-rise buildings, skylights need to be designed on the top of the building to achieve the effect of liberating the roof. Sunlight can be illuminated through the roof to the interior of the building. The work of designing the skylight can be divided into two parts, the upper part. It is a light-transmissive glass, and the lower part is a metal piece. After passing through the glass, the sunlight can be irradiated onto the metal piece. After that, it is reflected to the ceiling, thereby achieving the purpose of illuminating the hall and producing a good light environment.
(2) Optimizing the direction and position of the building.
For example, China is in the position of the northern hemisphere. Therefore, the lighting time in the south direction is long and the height of the illumination is higher.
The east-west orientation is easy to expose the sunlight to the indoor environment, resulting in indoor The temperature rises and even glare occurs. Therefore, it is necessary to implement the necessary shielding measures.
The northern part of the building basically relies on the diffuse reflection of the sky to achieve the lighting effect. The high-rise building itself has a high volume ratio, which is difficult to meet the needed for people’s sunshine.
In China, the high-rise buildings in the south of the north face are in the best situation. The planning of the city in the severe cold area needs to pay attention to the principle of sunshine, scientifically and reasonably determine the direction and location of the buildings, so that every building can obtained more light energy and solar radiation, We can see that the direction, location and energy saving of buildings are closely related.
(3) The use of atrium lighting.
When designing high-rise buildings, the shape and transparency of the roof should be fully considered. The height of the atrium is larger than the width, and the direct sunlight is very small. Most of the light is caused by the diffuse reflection of the atrium or by the secondary reflection.
Therefore, if the atrium is spacious, it can adjust the temperature and humidity inside the high-rise building. In addition, the top skylight and the side windows together can achieve close communication with the natural environment, which is conducive to a good circulation pattern between the building and the natural environment.
4.2 Application of natural lighting and energy saving technology in high-rise buildings
For the time being, the energy-saving technologies for the high-rise building lighting used in China are mainly divided into the following categories:
- Photoelectric glass wall technology.
This technology has a strong modern sense and is the primary choice for high-rise building decoration materials.
For normal glass curtain wall, its thermal insulation and sound insulation performance are poor, increasing the building energy consumption and also arise the rapid production of light pollution.
The technology of photoelectric curtain wall combines various properties such as sound insulation and heat insulation, and is a new type of building curtain wall.
The exterior of this facade is simple and beautiful. It also incorporates natural light and artificial buildings. It can quickly convert natural light into electrical energy, reducing the power loss of the building itself and the possibility of light pollution.
In addition, the insulation effect of the curtain wall is improved. And the effect of ecological protection.
- Light guide lighting system.
This system effectively collects natural light and introduces it into related equipment. After transmission through the light pipe, diffuse reflection equipment is used to achieve uniform illumination of natural light.
The lighting is relatively soft and the intensity of the light is irradiated. It can also be adjusted according to the specific conditions. The lighting effect produced by the natural light is very obvious.
Whatever on the morning to in the evening, even it is cloudy or rainy, the light guide system can also introduce sufficient sunlight.
The light produced by this lighting system is basically the same as natural light, which means that we can enjoy plenty of sunshine even if we don’t go out at home. In addition, this system can provide not only natural light up to 10 hours, but also It can also save energy and get rid of the traditional concept of electric lighting.
- Solar heliostat equipment.
This equipment is a new technology applied to the outside of buildings, which can effectively improve the efficiency of collecting natural light.
At the same time, this device can track the movement orbit of the sun. In addition, through the diffusing skylight Natural light is reflected to the bottom of the building to achieve the collection of natural light.
In summary, the lighting design of high-rise buildings can scientifically and reasonably collect and utilize natural light, which not only saves energy, but also prevents the negative impacts caused by other unfavorable factors, and creates good for people’s lives and work. The environment has a certain positive impact on the physical and mental health of human beings.