Due to the impact of the Great East Japan Earthquake, the Fukushima Daiichi and No. 2 nuclear power plants stopped working one after another, resulting in a significant decrease in the power supply. In order to cope with the shortage of electricity supply, various sectors in Japan have conducted extensive energy conservation activities. Insightful people believe that compared to various deliberate power-saving measures, the use of "intelligent power saving" of information technology is the first choice for economic activities that are less influential and can actually achieve effective power-saving.
After the Great East Japan Earthquake, many enterprises and families began to join the ranks of saving electricity. Specific methods include turning off lights and stopping the use of warm water, changing the temperature settings of air conditioners, shortening business hours, etc. Some buildings have stopped some passenger elevators and auto Escalator operation. Many people deliberately stopped using electrical equipment in order to express their support for the disaster area. According to the website of Tokyo Electric Power Company, the above efforts have achieved certain power-saving effects. For example, electricity consumption in the daytime on April 5, 2011 was 5 million kilowatts lower than the same period last year.
However, the situation is not optimistic. In April, the temperature in the Tokyo metropolitan area gradually increased, and the number of days without scheduled blackouts also increased. In particular, after entering the summer of high electricity demand, the situation is bound to become very severe. It is estimated that even if the increase in thermal power generation and the purchase of power from self-produced power generation equipment of ordinary enterprises, there is still a power gap of about 10 million kilowatts. As a countermeasure, in addition to trying to avoid planned power outages, relevant parties are formulating plans to require electricity consumers to reduce electricity consumption by up to 25% to 30%. For ordinary families, it is also hoped that they can reduce electricity use by 15%. To this end, the media, etc. have launched special sections to raise various power-saving coups.
At the same time, there are also concerns that energy conservation will affect economic activity. If the bustling and prosperous streets of former days become dark, the number of shoppers will definitely decline, and the sales of businesses will be greatly reduced. Planned power outages will result in under-employment of the factory. Even office white-collar workers will be reduced in efficiency by deliberately saving electricity. The power-saving activities that are premised on deliberate savings are often unable to persist for a long time.
Office energy saving plan
In fact, as early as before the Great East Japan Earthquake, a number of information service companies in Japan have already launched support for energy-saving services such as buildings, including Canon’s Energy Saving Office Solutions and Mitsui’s “Green Energy Management System.†", UGS's "green service" and so on. These "smart" power-saving methods can minimize people's deliberate behavior. Its common features are: By collecting lighting status of lighting equipment and operating status of air conditioning equipment, which part of the floor is occupied, and the temperature difference between indoor and outdoor, etc., lighting and air conditioning equipment are controlled according to the actual situation, so as to achieve the “minimum Intervention, minimum power consumption."
At present, BAS (Building Automation System) and BEMS (Building Energy Management System), which are commonly introduced in office buildings, etc., usually implement unified management of lighting and air-conditioning in the building's operation management room, and all kinds of equipment comply with the “indoor temperature of 28°C. The pre-programmed programs such as "The floor is turned off at 20 points for lighting and air conditioning" are run. "Intelligent energy-saving" is more detailed control. For example, Mitsui Information’s “Green Energy Management System†divides each floor into a maximum of 16 areas and converts lighting and air-conditioning equipment by measuring the temperature of individual rooms.
Best indoor and outdoor temperature difference
In addition to temperature and humidity, the temperature difference from the outside air is also very important in an environment that can bring comfort to people. When the temperature difference from the outside air is 5°C, people will feel "warm" when the air conditioning equipment is heated in winter and "cool" when it is cooled in summer. If the temperature of the air conditioner is automatically controlled based on the indoor and outdoor temperature difference data, comfort and power saving can be taken into consideration at the same time.
So, how can we collect data inside and outside office buildings? If you have already introduced BAS and BEMS, just extract the data from the system.
When the above system has not been introduced or the data collected by the system is incomplete, an energy meter may be added to the distribution board, or a dynamic sensor and a temperature and humidity sensor may be configured to grasp various information in different places such as offices.
In addition, data collected from the conference room reservation system and the attendance management system also play an important role. By combining these data related to “human activitiesâ€, humanized control suitable for human activities can be achieved. For example, the air conditioner can be turned on 10 minutes before the meeting room reservation time to adjust the room temperature; with the aid of the dynamic sensor, the lighting is turned on only when the participant enters the room. Turn off the air conditioning 15 minutes before the end of the meeting, use the remaining temperature to maintain the room temperature, and turn off the lighting when the participants leave. In addition, it is also possible to set a mode such as stopping the air-conditioning operation when no one enters the conference room after 5 minutes of the scheduled time has passed, thereby preventing waste of power.
According to reports, the international standard "IEEE1888", which was officially approved on February 2, 2011, is expected to greatly promote the use of information technology to control lighting and air-conditioning equipment. In the future, as long as there is an adaptor that complies with IEEE1888, whatever kind of lighting and air-conditioning equipment produced by any manufacturer can be incorporated into a unified management and control system based on information technology.
In addition to the use of information technology for automatic control, the re-evaluation of office layout and work status will enable higher levels of smart energy savings. It is reported that NTT Data Corporation has the freedom to choose free seats through the introduction of seats that are not fixed employees, and has conducted useful attempts to intelligently save electricity at the working level.
"Free seat system"
According to the experimentally introduced "free seat system" by NTT Data Corporation, the office layout was first adjusted. The specific approach is to arrange the office space near the window to effectively use outdoor light. At the same time, the conference room is set in the center of the floor, and the meeting room is separated by a curtain only when needed, and is usually an open space that can be illuminated by outdoor light. Through the application of web conferencing systems and electronic documents, portable terminals and other modern office tools, as much as possible to shorten the working hours in the office. When working overtime, lighting fixtures are only used in part of the floor. Taking the above measures will not only reduce electricity expenses by 24%, but also reduce office space by 26%, reduce the storage of documents by 50%, and reduce paper consumption by 69%. In this sense, this will not only increase employees' awareness of power saving, but also help increase the cost competitiveness in the company's business activities.
After the Great East Japan Earthquake took place, in response to the possible long-term power shortage, experts have put forward proposals such as using the smart grid to re-evaluate the power distribution network and change the cost system to promote the conservation of electricity. On March 28, the Ministry of Economy, Trade and Industry of Japan issued the “2011 Energy Saving Technology Strategy†and proposed important technologies for energy saving and the introduction plan before 2030. It can be predicted that "intelligent energy-saving" will play a very important role in the future energy-saving journey.
After the Great East Japan Earthquake, many enterprises and families began to join the ranks of saving electricity. Specific methods include turning off lights and stopping the use of warm water, changing the temperature settings of air conditioners, shortening business hours, etc. Some buildings have stopped some passenger elevators and auto Escalator operation. Many people deliberately stopped using electrical equipment in order to express their support for the disaster area. According to the website of Tokyo Electric Power Company, the above efforts have achieved certain power-saving effects. For example, electricity consumption in the daytime on April 5, 2011 was 5 million kilowatts lower than the same period last year.
However, the situation is not optimistic. In April, the temperature in the Tokyo metropolitan area gradually increased, and the number of days without scheduled blackouts also increased. In particular, after entering the summer of high electricity demand, the situation is bound to become very severe. It is estimated that even if the increase in thermal power generation and the purchase of power from self-produced power generation equipment of ordinary enterprises, there is still a power gap of about 10 million kilowatts. As a countermeasure, in addition to trying to avoid planned power outages, relevant parties are formulating plans to require electricity consumers to reduce electricity consumption by up to 25% to 30%. For ordinary families, it is also hoped that they can reduce electricity use by 15%. To this end, the media, etc. have launched special sections to raise various power-saving coups.
At the same time, there are also concerns that energy conservation will affect economic activity. If the bustling and prosperous streets of former days become dark, the number of shoppers will definitely decline, and the sales of businesses will be greatly reduced. Planned power outages will result in under-employment of the factory. Even office white-collar workers will be reduced in efficiency by deliberately saving electricity. The power-saving activities that are premised on deliberate savings are often unable to persist for a long time.
Office energy saving plan
In fact, as early as before the Great East Japan Earthquake, a number of information service companies in Japan have already launched support for energy-saving services such as buildings, including Canon’s Energy Saving Office Solutions and Mitsui’s “Green Energy Management System.†", UGS's "green service" and so on. These "smart" power-saving methods can minimize people's deliberate behavior. Its common features are: By collecting lighting status of lighting equipment and operating status of air conditioning equipment, which part of the floor is occupied, and the temperature difference between indoor and outdoor, etc., lighting and air conditioning equipment are controlled according to the actual situation, so as to achieve the “minimum Intervention, minimum power consumption."
At present, BAS (Building Automation System) and BEMS (Building Energy Management System), which are commonly introduced in office buildings, etc., usually implement unified management of lighting and air-conditioning in the building's operation management room, and all kinds of equipment comply with the “indoor temperature of 28°C. The pre-programmed programs such as "The floor is turned off at 20 points for lighting and air conditioning" are run. "Intelligent energy-saving" is more detailed control. For example, Mitsui Information’s “Green Energy Management System†divides each floor into a maximum of 16 areas and converts lighting and air-conditioning equipment by measuring the temperature of individual rooms.
Best indoor and outdoor temperature difference
In addition to temperature and humidity, the temperature difference from the outside air is also very important in an environment that can bring comfort to people. When the temperature difference from the outside air is 5°C, people will feel "warm" when the air conditioning equipment is heated in winter and "cool" when it is cooled in summer. If the temperature of the air conditioner is automatically controlled based on the indoor and outdoor temperature difference data, comfort and power saving can be taken into consideration at the same time.
So, how can we collect data inside and outside office buildings? If you have already introduced BAS and BEMS, just extract the data from the system.
When the above system has not been introduced or the data collected by the system is incomplete, an energy meter may be added to the distribution board, or a dynamic sensor and a temperature and humidity sensor may be configured to grasp various information in different places such as offices.
In addition, data collected from the conference room reservation system and the attendance management system also play an important role. By combining these data related to “human activitiesâ€, humanized control suitable for human activities can be achieved. For example, the air conditioner can be turned on 10 minutes before the meeting room reservation time to adjust the room temperature; with the aid of the dynamic sensor, the lighting is turned on only when the participant enters the room. Turn off the air conditioning 15 minutes before the end of the meeting, use the remaining temperature to maintain the room temperature, and turn off the lighting when the participants leave. In addition, it is also possible to set a mode such as stopping the air-conditioning operation when no one enters the conference room after 5 minutes of the scheduled time has passed, thereby preventing waste of power.
According to reports, the international standard "IEEE1888", which was officially approved on February 2, 2011, is expected to greatly promote the use of information technology to control lighting and air-conditioning equipment. In the future, as long as there is an adaptor that complies with IEEE1888, whatever kind of lighting and air-conditioning equipment produced by any manufacturer can be incorporated into a unified management and control system based on information technology.
In addition to the use of information technology for automatic control, the re-evaluation of office layout and work status will enable higher levels of smart energy savings. It is reported that NTT Data Corporation has the freedom to choose free seats through the introduction of seats that are not fixed employees, and has conducted useful attempts to intelligently save electricity at the working level.
"Free seat system"
According to the experimentally introduced "free seat system" by NTT Data Corporation, the office layout was first adjusted. The specific approach is to arrange the office space near the window to effectively use outdoor light. At the same time, the conference room is set in the center of the floor, and the meeting room is separated by a curtain only when needed, and is usually an open space that can be illuminated by outdoor light. Through the application of web conferencing systems and electronic documents, portable terminals and other modern office tools, as much as possible to shorten the working hours in the office. When working overtime, lighting fixtures are only used in part of the floor. Taking the above measures will not only reduce electricity expenses by 24%, but also reduce office space by 26%, reduce the storage of documents by 50%, and reduce paper consumption by 69%. In this sense, this will not only increase employees' awareness of power saving, but also help increase the cost competitiveness in the company's business activities.
After the Great East Japan Earthquake took place, in response to the possible long-term power shortage, experts have put forward proposals such as using the smart grid to re-evaluate the power distribution network and change the cost system to promote the conservation of electricity. On March 28, the Ministry of Economy, Trade and Industry of Japan issued the “2011 Energy Saving Technology Strategy†and proposed important technologies for energy saving and the introduction plan before 2030. It can be predicted that "intelligent energy-saving" will play a very important role in the future energy-saving journey.
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