The 121st Plenary Session of the International Olympic Committee (IOC) just voted in Copenhagen, Denmark, and golf and 7-a-side football became the official competition for the 2016 Rio de Janeiro Olympic Games and the 2020 Olympic Games in Brazil. This is the return of golf to the Olympic family after the Olympic Games in 1904. The rugby was once again the Olympic Games after the 1924 Olympics.
Golf course lighting
The golf course lighting system can extend the golf sport to the stars, while also increasing the stadium's usage rate. This is a relatively consistent understanding of the use of lighting systems, and there are many misunderstandings about some specific technical indicators and maintenance issues.
Golf course lighting design
First, the brighter the court, the better the initial contact with the stadium management personnel and industry professionals, everyone thinks that the night illumination of the stadium is brighter and better, it is best to turn the night sky into daylight. But this is not the case. The characteristics of golf determine that it requires a specific lighting effect. Everyone knows that golf is a sport that is both relaxing and relaxing, just the opposite of the exciting and passionate atmosphere of football and basketball. Therefore, the lighting of the golf course is more suitable for softer light, so that the golfer feels like swinging and walking under the moonlight. Moreover, it takes more than 2 hours to finish a 9-hole golf ball, and 18 holes last for more than 4 hours. After so long exposure to artificial light, the golfer's eyes will definitely feel tired. In addition, the brighter the stadium means more power consumption. From the perspective of environmental protection and cost saving, the lighting concept of “the brighter the better†is not correct.
Night golf lighting
Second, the lighting is very bright at the beginning of the building, and it will soon be darkened. It is true that the HID high-power metal halide lamp used on the golf course has a phenomenon that the lighting effect is declining with the use time, and this is also gold. The limitations of the halogen lamp itself. This is known as "light decay", which is caused by the principle of light emission of the metal halide lamp itself. According to the management of the Shahe Golf Club, their lighting system has this problem, and it is more serious. However, what is exciting is that with the continuous innovation of technology, manufacturers have solved this problem better (Masko, which focuses on sports lighting, is one of the best). Under the new technical conditions, keeping the stadium's constant and non-attenuating lighting effect is no longer an "impossible task."
Third, the 1000-1500 watt source of yellow light 2000 watts is white light now has a perception: a 1500 watt light source is considered to emit light yellow, and a 2000 watt light source is white. In fact, the yellow and white light are not directly related to the power of the light source, they are determined by the color temperature of the light source. We can see in the standard chromaticity map and Planck curve in the figure, the color temperature is between 3600K and 10000K, all are white light range, less than 3600K yellow light, and more than 10000K light blue.
Fourth, the system that achieves the same lighting effect of 1500 watts of lamps will compare with the number of lamps used in the 2000 watt system only from the two numbers of 1500 watts and 2000 watts. It seems logical to conclude such a conclusion. In fact, this conclusion is somewhat "taking people by appearance", and more or less is determined by efficiency. Usually 1500 watts of rated luminous flux is 155,000 or 178000 lumens, while 2000 watts is 180,000 or 200,000 lumens, both of which have light decay, so the luminous flux of 2000 watts is 10-30% more than 1500 watts, so it seems At the same level of illumination, when using a 1500-watt luminaire system, the number of luminaires to be purchased is indeed more. Now, Masco's LSG lighting system has a constant luminous flux output of 134,000 lumens, 2000 watts of 180,000 or 200,000 lumens, which decays to 70% over time, maintaining at 126,000 and 140,000 lumens, below or with Masco. The constant luminous flux of 1500 watts is very close to 134,000 lumens. Therefore, in terms of the number of lamps, the 1500 watt system will not be more than 2000 watts, which will not only increase the input cost of the lamps, but will also save operating electricity costs.
Golf course lighting
Fifth, the stadium is bright, the lighting effect is good. This is one of the most common misunderstandings. Usually we see that the stadium is brighter refers to the brightness of the ground or the surrounding environment of the trees, which is the horizontal lighting effect. At the same time, it is also the spill light scattered from the lamps. These are direct light. If it is too strong, it will be strong. If it is less, it will be soft. But for the player, the vertical lighting effect in the air is more important, because the player must see the trajectory of the white ball flying in the air, so the luminaire should have a considerable part of the light projected into the air to ensure the lighting effect in the air. If the course looks very bright, the vertical illumination in the air is very poor, and it is a failed lighting project. On the contrary, proper horizontal lighting effects combined with good aerial vertical lighting effects are ideal. Of course, the horizontal lighting effect and the vertical effect in the air can achieve the desired effect by increasing the number of lamps, but in this case, the power consumption is also increased, resulting in an increase in lighting investment and operating costs. For the club, this is It is also not advisable.
Golf course lighting
Golf course lighting
Golf course lighting
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Golf course lighting
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