Shanghai Library is developing, and incorporating energy efficient technology is an essential part of the new library building’s construction. To provide readers with a healthy and comfortable reading environment, the library requires precise HVAC control. Although these systems use a lot of energy, with the help of variable speed drives energy savings are expected to total hundreds of MWh every year.
The East Branch of Shanghai Library, which is expected to open at the end of 2021, is a major new project in China’s biggest city. The building area is 115,000 square meters, with 7 floors above ground and 2 floors underground. With each floor exceeding 10,000 square meters and a storey height of 6.2-7.8 meters, this will be not only a world-class cultural facility but a landmark addition to the city’s skyline.
Shanghai Library is an important educational site for citizens, and a place to spend leisure time. A suitable temperature and good ventilation are essential for creating a comfortable and healthy reading environment for visitors. At the same time, the preservation of thousands of books requires highly specific optimal temperature and humidity levels.
Typically, heating, ventilation, and air conditioning (HVAC) consume on average about 50 percent of the energy used in buildings, which means that maintaining the right climate in the library consumes a lot of power. Many energy efficiency problems in buildings can be solved with variable speed drives. “As most of the time building air conditioning systems run at part loads, drives can save up to 60% of energy compared to damper or valve control methods,” Yongjian Wang, general manager of Shanghai Songneng Mechanical and Electrical Equipment Engineering Co., Ltd says.
“As most of the time building air conditioning systems run at part loads, drives can save up to 60% of energy compared to damper or valve control methods.”
“ABB’s ACH580 is a frequency converter dedicated specifically to the needs of HVAC applications. This drive was chosen to ensure the right environmental conditions for the East Branch, while saving tremendous amounts of energy per year. It stood out due to its proven product characteristics such as stable operation, precise control, and advanced safety features.”
In addition, this frequency converter is compatible with almost all types of AC motors, including high-efficiency permanent magnet motors and synchronous reluctance motors. When paired with a frequency converter, the motor only runs at the speed required by the actual load, thereby greatly saving energy. For a huge library such as the East Branch, reducing energy use is critical to the sustainable development of the venue. With such drives used in HVAC systems, reductions can reach up to 30%. In addition, efficiency is further improved by the presence of anti-interference properties, ensuring that smooth operation is not affected by electromagnetic interference.
These assets mean that the 129 frequency converters being installed in the library will save in excess of 635 MWh every year. Indeed, improving energy efficiency is a key indicator for the building, along with reducing energy consumption and carbon emissions. In addition, the library is utilizing other methods in this regard, such as energy management software and comprehensive energy utilization through solar energy and heat recovery systems. Public libraries are concrete embodiments of urban culture, of great significance in promoting sustainable and sound development. Maintaining such ideals in today’s world requires the adoption of new and more efficient technology. The successful delivery of the East Branch of Shanghai Library project will demonstrate the importance of combining excellent performance with improvements in energy efficiency. In cooperation with their customers and partners, ABB will continue to optimize products that create sustainable value and decrease energy consumption.
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