Green building certification began in various countries in the 1990s. Since then, it has evolved from using environmentally friendly building materials and being environment-friendly to focusing on energy conservation. Now it is also pursuing integration into the local area, so that it is not just the building itself that is environmentally friendly. At the 2017 Hong Kong Eco Expo, it can be found that many construction-related exhibitors have proposed the Internet of Things and data analysis to assist safety and energy management services. Among green building materials, many have launched their own research and development of thermal insulation coatings. , to reduce the need for air conditioning. "Ninety percent of electricity in Hong Kong is used indoors," reminded Kan Hanpeng, director of property development department of Schneider Electric. Chan Wing-kang, executive director of the Hong Kong Green Building Council, also pointed out that currently, two-thirds of Hong Kong's energy waste occurs in buildings. "Energy efficiency is an energy resource owned by every country." Chen Yongkang emphasized that as long as energy efficiency is improved, any country can have enough energy. Chan Wing-kang pointed out that Hong Kong is currently facing a situation where although the energy efficiency of hardware has gradually improved, the number of electrical appliances continues to increase. Overall, energy consumption is still increasing. Therefore, Hong Kong is currently moving toward using information and data to allow builders, technology, and property management industries to work together to save energy. Jian Hanpeng used a smart bracelet for health management to explain the Internet of Things system applied in buildings. It also relies on setting up sensors to wirelessly transmit data, and accordingly make timely adjustments to air conditioning, lighting, and electrical appliances. The goal is to Buildings that assist users can be 3 times more energy efficient. For example, it can detect someone to turn on lights and air conditioners, detect sunlight and automatically turn off lighting equipment, adjust air conditioners based on air quality data, etc. Jian Hanpeng said bluntly that at present, professional institutions with large electricity consumption in Hong Kong usually have their own energy-saving measures, but households, small shops, offices, etc. are often less energy efficient. This is where the customers they want to win are located, so they think , the control interface provided must be as simple as possible. "Too much data, too little time." Siemens Building Technology Manager Jimalyn Yao said that the question that is beginning to arise is how to make correct decisions for these buildings with so much data, and whether there is really a proper decision-making process. use? Siemens believes that in order for these data to be truly effective, there should be a large platform to combine data from various companies and find out the indirect relationships between them. For example, when a tram enters a station, it will bring a large number of passengers into the station or into a fixed building. If the data from both sides can be combined, the air conditioning of the building can also be adjusted according to the flow of people. This can only be successful if all parties disclose their information and data. Chow Ka-ming, director of the Hong Kong Green Building Council, said that Hong Kong’s green building ratings are constantly updated, and the impact on the community and outdoor environment, such as lighting, air pollution, microclimate, etc., has been further considered from the pursuit of green building characteristics, operation management, and energy efficiency. Take ventilation as an example. You cannot only care about the quality of your own building, but block the ventilation of the entire area. Therefore, many buildings currently leave air ducts. Even if the land price is high, holes should still be opened to allow the wind to flow. Another example is to retain trees, Consider whether the construction location can provide some shade for the sidewalk, etc. Chou Jiaming used Hope Point and Tsim Sha Tsui as counterexamples to explain why the temperature can feel particularly high when walking there at night. This is because local buildings use a large amount of cement and metal, and these materials continue to release the temperature absorbed during the day at night. To cool down such a building, you can use plant green walls, white paint, or store rainwater to cool down the building. Hong Kong's green building certification also has regular re-evaluations and continuously updated guide manuals. There are also many organizations and consulting companies that assist in green building design participating in the exhibition. The participation of multiple thermal insulation coating companies at the exhibition also shows the business opportunities and fierce competition. The companies have developed coatings made of ceramics, aerogels and other materials. A thin layer can be enough to make the difference between the inside and outside of the wall more than ten degrees, originating from space. Rocket Technology's Japanese business AZABU said that their ceramic coating GAINA, which took 30 years to develop, is enough to lower the indoor temperature by 5 degrees. This reduces the demand for air conditioning and brings about energy saving effects. It is already available in Japan. 120,000 people enjoyed it. Data source: Environmental Information Center (2017-10-31)
