Use of photovoltaic power generation and LED lamp cut in Japan Railway Stations

Japan, accounting for about 20% of the railway operator commercial electricity consumption increased year by year. In order to prevent this trend, companies are beginning to use photovoltaic power generation systems and LED lights at the station.

Among them, JR East Japan to promote the environmental station project is a good example. The project's first demonstration station is the four valley station in Tokyo. The station in the spring of 2012 to become the first green station, station and adjacent commercial facilities on the roof installed photovoltaic power generation system, only the station roof can provide 50kW power.

JR East Japan is promoting the use of energy-saving technologies and renewable energy and other environmental stations in the station project. The first demonstration station is the four valley station, the introduction of LED lights and photovoltaic power generation systems, etc..

Four valley station platform and hall lighting using LED lights. The electronic display station name display and monitor the backlight driver also uses LED. In addition to install skylights in the daytime, can turn off the lights, still station facilities used in domestic fuel cell.

The goal is to reduce the CO2 emissions by four stations by about $40% over the course of these measures by about $2008. According to the introduction of JR East Japan, will gradually increase the environmental protection station. After the four valley station the next station is Chiba county environmental protection JR kaihin Makuhari station.

Energy saving through lighting control

The traditional fluorescent lamp and incandescent bulbs to replace the LED lamp can reduce power consumption, and then according to the situation to control the LED lights, then you can further reduce electricity consumption. For example, Tokyu freedom Hill Station try to import the LED lamp Panasonic and its control system.

The lighting control system is installed in each position of the station, and the brightness of the LED lamp can be adjusted automatically according to the number of people. For example, dim the lights when pedestrians are few.

The sensor is equipped with a sensor, which can ensure the brightness of the platform. That is to say, in the clear day will dim the lights, and in the rainy day light

Not only brightness, but also automatically adjust the color temperature. In the hall, the LED will change the color temperature. For example, in the morning hours, in order to make clear, adjustable fineness temperature 5000K "daylight", the evening will be transferred to the color temperature of about 4000K, into the ordinary "white to warm white". In order to make people calm down in the evening, tune into the color temperature of 3000K light bulb".

In addition, the 494 LED lights installed free hill station in the hall, installed 238 lamps in the depot room and Restroom installed 290 lights, 152 lights in the station stores. Also installed 47 brightness sensor, 168 personal sensor.

Organic EL lighting

In addition to the LED lights, the free hill station also uses the organic EL light. Panasonic said, this is the first attempt in the station using organic EL lights.

Lighting using the organic EL module is luminous flux of 48lm, luminous efficiency of 17lm/W, life of about 10 thousand hours of products, luminous surface of 80mm square. The lamps and lanterns of this module are installed in the ticket booth 19 groups (a total of 184 modules), in the ticket window installed in 10 groups (a total of 92 modules).

The goal of using organic EL light and LED light in the free hill station is to cut the total electricity consumption and CO2 emissions by 25%.

By replacing the LED light and the organic EL light, free hill station all the lighting power consumption reduction will be used, but the average can be reduced by about 30%, can be reduced by about 37%. Coupled with the introduction of lighting control system, a total of about 50% of the reduction in lighting electricity consumption. Due to the lighting power consumption in the whole station accounted for about 50%, so the station can achieve the overall electricity consumption reduction of about 25% of the target.

Panasonic, in addition to achieving energy efficiency, there is a purpose, that is to identify new technologies to promote the popularization of the subject faced, and find a solution. This time found the problem of organic EL lamp. Compared with the LED lamp, organic EL lamp in the cost, brightness and efficiency of the subject, "equivalent to the technical level of LED lights from 2003 to 2004. Although it can be used as a local lighting, but as a whole the use of lighting is not enough. Therefore, Panasonic plans to import this opportunity as an opportunity to clear the subject, and then further improve product performance.