Project Name: Lighting Design for the Auditorium of the New Tsinghua Academy
Reporting unit: Tsinghua University Architectural Design and Research Institute Co., Ltd.
I. Project Overview
The Tsinghua University Centennial Hall Project is located on the campus of Tsinghua University in Haidian District, Beijing. The main functions include three parts: the New Tsinghua School, the Concert Hall, and the Tsinghua University History Museum. The total construction area is 42,950 square meters, the total height of the building is 23.60 meters, and the highest point of the local stage tower is 32.6 meters. Among them, the New Tsinghua School is the main building of the Centennial Hall of Tsinghua University. It has many functions such as assembly, report, teacher and student cultural activities, professional performances, etc. It is a large-scale B theater. Its auditorium consists of a pool of two seats and two floors, with a total of 2011 seats. The ceiling of the auditorium is petal-shaped, with a depth of 35.4 meters, a width of 33.6 meters, and a net height of 2.8 to 17.5 meters.
Second, design ideas
As the iconic building of Tsinghua University's centennial celebration, the seats of the Tsinghua Academy's auditorium use Tsinghua University's color-purple as the main color, and the surrounding walls are decorated with light brown solid wood, combined with architectural acoustics to make the folding shape, making architectural aesthetics and architecture. The combination of acoustics complements each other; the lighting of the auditorium uses the theme of Tsinghua University Flower - Bauhinia, with a group of Bauhinia Lanterns, nine sets of Bauhinia small ring lights, combined with thousands of point light sources, full of flowers and brocade Clusters, Bauhinia are shining; looking at the entire audience hall, it is like a huge Bauhinia blooming. The combination of architectural lighting and architectural decoration fully expresses the theme and artistic conception of "Buddhist Bauhinia Opens a Hundred Years Spring, Tao Li Huan gathers Tsinghua Garden", so that every audience present is heart-warming.
Third, the lighting effect
Fourth, design standards and lighting methods
According to the "Architectural Lighting Design Standard" GB50034-2004, the illuminance of the auditorium is: the average illuminance of the general meeting mode is 300 lx, the average illuminance of the reporting mode is 200 lx, the uniformity of illumination in the VIP area is >0.7, and the uniformity of illumination in other areas is > 0.5; color rendering index Ra>85, color temperature is 4000K, uniform glare value UGR<22.
The lighting fixtures are divided into two parts: basic lighting and decorative effect lighting; in the VIP area of ​​the auditorium of the auditorium (ie, the highest height in the net height), the lighting adopts a special Bauhinia theme with a large lantern ceiling lifting; the stamen next to the theme lantern uses 92 points. The light source lamps are embedded and installed; the nine groups of Bauhinia small ring lights are composed of 72 energy-saving lamps, which are embedded and installed; the large-area point light source lamps are arranged radially and embedded.
The compact energy-saving fluorescent lamp used in the base lighting of the auditorium is equipped with a dimmable electronic ballast with a power factor of COS∅>0.9; its model and quantity are as follows:
Numbering fixture name (correction factor) Φ (lamp) (lm) Φ (light source) (lm) quantity
The decorative effect lighting consists of a large flower lantern, a decorative flower with surrounding flowers, nine small purple ring lights and a 300-meter LED light strip.
Fifth, lighting control
1. Lighting scene settings:
According to the general requirements of the theater and the specific conditions of the school, the new Tsinghua Academy auditorium lighting presets eight lighting scenes: entry, appearance, report, general meeting, major meeting (full opening), performance, cleaning, full clearance. The design illuminance values ​​under various lighting modes are as follows:
(1) Incoming and exit modes: all kinds of lights are dimmed to reasonable values, and the overall basic illumination is about 60-100 lx;
(2) Report mode: highlight the lighting effect of the podium, and the illumination of the auditorium should reach 150-200 lx, ensuring the illumination required for recording;
(3) Performance mode: highlight the stage lighting effect, the audience illuminance is 30-50lx;
(4) General conference mode: the illumination of the entire venue reaches 300lx;
(5) Special major conference mode: the illumination of the entire venue reaches 500lx;
(6) Cleaning mode: the basic illuminance value reaches 100-150 lx;
2. Lamp control method:
The new Tsinghua Academy auditorium adopts Siemens INSTA_BUS EIB intelligent lighting control system; the lighting main console is located in the lighting control room, and the intelligent lighting control panel is set in the entrance of the auditorium, the stage supervisor and the slap room, so that it can be controlled by dimming scenes. Panel control, central control, centralized visualization control three control methods to achieve the control of each lighting area, and can change the mode and control requirements of the lighting scene according to the needs of the user, thus better meeting the difference of the audience hall Functional Requirements.
Sixth, energy-saving measures in lighting design
Under the premise of improving the efficiency of the entire lighting system and ensuring the quality and effect of lighting, it pays attention to energy saving and saves electricity for lighting.
1. Lighting source: The general lighting fixtures in the auditorium use energy-saving fluorescent lamps and LED lights.
2. Luminaires: High-efficiency lamps and open-type direct lighting fixtures are used. The efficiency of the lamps is not less than 70%, and the efficiency of the lamps has a high reflectance. The luminaire is equipped with a high power factor electronic ballast with a power factor of not less than 0.9.
3. Lighting control: the theater auditorium, foyer, corridor, stairwell, etc. use intelligent lighting control system, and network with the building automation system, the rest of the venue lighting control; for lighting site control, such as offices, conference rooms, etc. The place, the controlled light column is parallel to the side window, and is controlled by grouping, which is not only convenient to use, but also can better utilize natural light.
4. The illuminance and corresponding power density values ​​of each site meet the relevant requirements of the Architectural Lighting Design Standard GB50034-2004 to ensure energy saving of lighting.
VII. Environmental safety measures in lighting design
The general lighting of this project uses high-efficiency fluorescent lamps and energy-saving lamps; the ballasts used at the same time are in line with the national energy efficiency standards of the products.
The low-gloss surface finish of the auditorium reduces light curtain reflection and reflected glare to a certain extent. The illuminance uniformity of the VIP area in the auditorium is >0.7, the illuminance uniformity of other areas is >0.5; the color rendering index Ra>85, the color temperature is 4000K, and the uniform glare value UGR<22.
The grounding form of the lighting distribution system of the audience hall adopts the TN-S system; the exposed conductive part of the lighting fixture should be reliably grounded, and a PE protection line is added. At the same time, the lighting distribution box is equipped with a surge protector to reduce the interference of lightning electromagnetic pulses.
The audience room seating light power supply uses a 36V safe voltage to avoid the risk of electric shock to the audience.
Evacuation lighting fixtures use a safe voltage to ensure the safety of evacuation and disaster relief personnel.
Eight, the conclusion
New Tsinghua School Hall Auditorium Lighting Design Unit: Tsinghua University Architectural Design and Research Institute Co., Ltd.; Lighting supplier: Thorn Lighting.
Since its official use, the Centennial Hall of Tsinghua University has undertaken more than 100 professional performances, more than 30 large-scale cultural events and important conferences, and more than 120,000 performances.
The new Tsinghua Academy auditorium lighting scheme broke the conventional uniform arrangement method. Combined with the two-way change of the auditorium's ground elevation and the ceiling height, the theme light and more than a thousand LED lights were unevenly arranged on the ceiling, and a better result was obtained. Illumination uniformity.
The lighting creativity of the auditorium is integrated with the architectural decoration, and the lighting effect is solemn and elegant. The theme lighting fixture consisting of Bauhinia Lantern, surrounding flower decoration lighting, nine sets of Bauhinia small ring lights and 300 meters LED light strips, with its innovative design of shape, color and light color, will completely reflect the artistic conception of Tsinghua Chunzheng in the past century. Make it out.
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