Core Tip: Underground space research experts, Tongji University experts, etc. recently completed a study that resulted in the introduction of sunlight from the ground into the ground, ending the history of sun exposure only on the ground. If this result is widely used, in the future, Shanghai's underground space will only be sun-baked on the ground. It will become a historical underground space research expert and an expert of Tongji University. The result of this research is the sun on the ground. Light is introduced into the ground, ending the history of only sunning on the ground. If this result is widely used, in the future, Shanghai's underground space will only be sun-baked on the ground and will become a history. In the ground, you can enjoy the "brightness" of the sun. Underground space research experts, Tongji University experts, etc. have recently completed one. The study, the result of this research, was to bring the sun's rays from the ground into the ground, ending the history of only sunbathing on the ground. If this result is widely used, the underground space in Shanghai will be "sunny" in the future.
"In the underground space, the biggest problem at present is that it is difficult to see the sun in the underground, which affects the physical and mental health of the underground workers, the normal work and the normal growth of the plants. After the sunlight is introduced into the ground, the biggest advantage is energy saving and human health. Promote the normal growth of underground plants and ensure normal work," said Professor Peng Fangle, Tongji University's underground space research center.
For example, he said that if the driver drives into the tunnel, he will have a feeling of darkness when he first enters the tunnel. This is the so-called black hole effect. When exiting the tunnel, there is a white hole effect that strongly irritates the white light of the eyes. Therefore, whether it is a black hole effect or a white hole effect, it will seriously affect the normal operation of the vehicle and easily lead to traffic accidents. If ordinary electric lights are used, it is difficult to solve the light transition problem of tunnel entrance and exit, but if soft sunlight is introduced, these problems can be solved.
It is reported that there are mainly three methods for introducing sunlight into the underground space. One is to use a mirror surface and use multiple refraction methods to introduce sunlight into the ground. The cheapest way to use this method is to install a set of such devices in an underground space of about 20 square meters, the price is about 1,000 yuan; the second is to absorb the sunlight device with a transparent cover, and then use the light pipe to introduce sunlight. underground. In this way, the price of installing a device ranges from 3,000 yuan to 6,000 yuan. The last method is to use a concentrating hood to transmit light through the optical fiber to the ground for long-distance transmission. Because of the need to transport light over long distances, the price transmitted by this method is relatively expensive. A set of imported equipment is estimated to cost 60,000 to 80,000 yuan.
On March 1st, Peng Fangle explained the device to the author very vividly. If the second light pipe is used to introduce sunlight, install the device on the lawn on the ground, and install the sun receiving device in the underground garage. On the sun, the underground can also be "sunny". At night, the solar energy stored during the day turns into light. After turning on the lights, the underground "sunlight" is bright, and the solar energy stored in the ground is transmitted back to the ground. The green space is also visible. "Sunshine", thus forming a unique landscape of day and night at the same time.
It is reported that after the completion of the research, the researchers will actively recommend the results to relevant departments and strive to apply them to the World Expo construction project. It is also known that the project's researchers are now working with the relevant manufacturers, and it is estimated that the above-mentioned light guides will be produced soon.
