□ Nanjing Daily/Zijinshan Journalist Yu Mengjiao
In the city's public institutions, high-efficiency energy-saving lamps emit soft light, rainwater and distilled water quietly "hide" in the collection system and become the source of nourishing flowers and plants again, and on-demand meal taking and CD action have become the norm... In recent years, Nanjing Municipal Government Affairs Administration has actively promoted the energy and resource conservation and green low-carbon transformation of public institutions in the city, The concept of energy conservation and environmental protection has gradually taken root in public institutions.
On May 15, at the launching ceremony of public institutions in Nanjing during the 2024 National Energy Conservation Publicity Week, many small energy saving tricks explored by public institutions in Nanjing caught everyone's eye.
Green Canteen: "Internet+Bright Kitchen" Accurately Predicts Meal Volume
In the Pukou District government canteen, a revolution of thrift is on.
As soon as we arrived at the entrance of the canteen, we saw the striking slogan of "No Food Waste". Such posters and slogans can be seen everywhere in the canteen. At lunchtime, the reporter saw that the staff of the government agencies and units who came to have dinner swiped their cards and queued up to pick up the meal on demand. After the meal, all the CDs were available.
Saving food is not only a virtue, but also a responsibility. In recent years, as a pilot unit for the evaluation of the effectiveness of anti food waste of public institutions in the city, the Pukou District Government Canteen has incorporated anti food waste work into the annual target responsibility management by focusing on conservation oriented institutions. Implement conservation from procurement and storage, food production, scientific food supply, energy and resources conservation, kitchen waste disposal, official meal management, publicity and training, and constantly promote the implementation of anti food waste measures. From 2021, we will improve the way of serving and dining, and change the daily three meals from the cooking mode to the self-service mode. The passive acceptance of a spoon has become a thing of the past, and it is replaced by the on-demand meal collection.
"To put an end to the waste on the tip of the tongue, we must start from the source." The relevant person in charge of the Pukou District Office Affairs Management Bureau said that the smart management method of "Internet+bright kitchen" has been deeply rooted in the hearts of the authorities. They created a "online catering" service column through WeChat applet, and used big data, cloud computing and other information means to conduct statistical analysis on the number of people who eat every day, Through the accurate prediction of the number of diners on the next day, we will continue to improve the rationality of procurement, continue to strengthen the classification management of food raw materials in and out of the warehouse, strengthen the food supply prediction, precise procurement, scientific storage, and eliminate waste from raw materials.
Green campus: "high-tech" hidden in the roof slab
On the 15th, the weather was fine and sunny. On the roof of the teaching building in Xianlinhu West Campus of Nanjing Jinling Primary School, gray "armor" were lining up to "receive" the sunlight. The neat PV modules were dazzling.
"The school's roof photovoltaic power generation project covers an area of more than 17000 square meters, and the smart meter system has fully used the Internet of Things technology, which has saved a lot of power energy for the school." The relevant person in charge of Qixia District Office Affairs Management Bureau told reporters that Qixia District is a long and narrow area with a large population, and different regions in the east, west and east have different resource endowments, school foundations, construction conditions, etc, They fully combine the regional characteristics of the school, adjust measures to local conditions, deeply tap the energy saving potential of the project, vigorously promote the construction of green school infrastructure, give full play to the role of regional education development community, drive regional development with individuals, and gradually form a green campus cluster.
The East Community of Qixia District Primary School led Nanjing Jinling Primary School, which played a leading role in the construction of green schools. In addition to the use of distributed photovoltaic power generation on campus, Jinling Primary School also makes full use of the natural endowment advantages of mountains and rivers in the campus, the cultural landscape advantages of "Jinxiao 48 Sceneries", the ecological education advantages of the scientific and technological ecological agricultural experience park, and the informatization advantages of the smart campus construction, and integrates the Fangtang, Swan Lake The agricultural garden and other resources are integrated into "Fangtang rainwater ecological circulation system, sponge city observation and test system, mountain rainwater collection system" and "modern agricultural irrigation planting area, ecological water-saving education interactive area", forming a water-saving education base with distinctive characteristics.
Green transformation: truly make electricity available to people and production
Qinhuai District Government has just been selected into the list of water efficiency leaders of public institutions in 2024-2026 published by the Energy Conservation Department of the State Administration of Organ Affairs. On the lawn of the district government compound, the faucet on the ground automatically rotates to spray water column on the lawn to irrigate the ground lawn; What is unexpected is that these water columns are automatically pumped up and sprayed under the pressure of water through the rainwater collection pool.
"We have set up 100 cubic meters of buried rainwater collection pool in the centralized office area for greening irrigation. Through this measure, 2400 cubic meters of irrigation water can be saved every year." The relevant person in charge of Qinhuai District Office Affairs Management Bureau said that they not only pay attention to details, but also start from the big picture. The central air conditioning system has been transformed into an intelligent system to optimize the existing system, Carry out automatic frequency conversion transformation on the air conditioning cooling pump, so that the air conditioning system can reduce the circulating power of the pump under the condition of reaching the set temperature, realize intelligent automatic regulation, and the energy saving rate is about 14%; Compared with traditional electric water heaters, the use of air energy water heaters can save 69% of energy efficiency, and save 7950 kilowatt hours of electricity every year; Install water-saving flow limiting valve, and each faucet can effectively save 40% water.
Gradually entering the summer, it will usher in the peak of electricity consumption. In view of this actual situation, last year, Nanjing installed intelligent control terminals for public institutions using central air conditioners with an area of more than 10000 square meters to achieve "measurable and measurable, and adjust when appropriate".
"The installation of air conditioning flexible control terminals can more effectively implement power supply demand response, reduce the load during peak power consumption, and truly make electricity available to the people and production by using technical means during peak power consumption in summer and winter." Wu Yun, deputy director of the Energy Conservation Division of the Municipal Government Affairs Administration, said that this year, They will aim at public institutions below 10000 square meters to carry out intelligent terminal regulation and transformation, and further strengthen the exemplary role of municipal public institutions in saving energy and resources and serving economic development.
In recent years, through various green transformation projects, the administrative departments at all levels in the urban area have effectively promoted the green transformation of public institutions. Compared with the end of the 13th Five Year Plan, the indicators of energy and resource conservation of public institutions in our city have dropped significantly. By 2023, 100% of the 776 district level and above party and government organizations in the city will have become conservation oriented.
