"The substitution of energy and equipment is the main way to achieve energy saving and emission reduction. In the future, China's cogeneration, distributed energy, and district heating will meet development opportunities, which require optimization of thermal systems, upgrading of equipment, and science. The work management and other aspects of the work hard." At the "2013 China Distributed Energy International Symposium" held on August 8, Cheng Baohua, chairman of Beijing Jinghai Heat Exchanger Equipment Manufacturing Co., Ltd. said, and from 2013, the national Looking at the actual investment and construction of distributed energy power plants, the accelerating trend is also very obvious. Expectation of policy support and acceleration of site construction will drive the development of many new energy industries such as photovoltaic and natural gas and related equipment manufacturing industries in China, and the localization of core equipment should be the direction of efforts of related equipment companies.
The core equipment is still dependent on imports
From the “12th Five-Year Plan of Energy,†China plans to build 1,000 natural gas distributed energy projects during the “Twelfth Five-Year Planâ€, and to “Opinions on the Implementation of Distributed Power Grid-Connected Services†issued by the State Grid Corporation of China. The report to the State Council on the "Recommendation of using 10 years to build China's distributed energy system" is releasing a positive signal for the development of distributed energy in China. Distributed photovoltaic power generation applications, electricity price support, and power grid companies and other related policies are also intensively introduced.
“With the rapid development of distributed energy, access management policies and power grid upgrades will continue to exert force, which will give the smart grid distributed energy equipment market opportunities for development.†said Zhu Zhongxing, deputy director of the Foreign Trade Development Bureau of the Ministry of Commerce, but currently Look, China's distributed energy core equipment still depends on imports.
In fact, as early as 2011, the National Development and Reform Commission and other departments jointly issued the “Guidance on the Development of Distributed Natural Gasâ€, which proposed to complete the research and development of major equipment for natural gas distributed energy by 2015, when installed capacity 5 million kilowatt-hours, the equipment autonomy rate reaches 60%; when the installed capacity reaches 10 million kilowatt-hours, it basically solves the self-manufacturing of core equipment such as small and medium-sized and micro gas turbines, the equipment autonomy rate reaches 90%, and the installed scale reaches 50 million yuan. Kilowatt-hour, preliminary realization of industrialization of distributed energy equipment.
Fortunately, some large enterprises in China have already made efforts to localize core equipment. “Huaton has formulated a five-year plan to achieve a localization rate of 75% in system integration and a localization rate of 50% in core technologies. The company has established a joint venture with General Electric of the United States and established Huadian General Light Engine in Shanghai. Equipment Co., Ltd. aims to master the distributed energy system integration technology, realize the assembly, testing and delivery of gas turbine generator sets in China, realize the local production support of some core components, and gradually promote the localization process.†Huadian Distributed Energy Engineering Liu Xianming, general manager of Technology Co., Ltd., told the “China Power News†reporter.
Improve utilization efficiency to reduce costs
In addition to mastering the core equipment and technologies to get rid of the current foreign controls on equipment prices, improving energy efficiency is also an effective means of reducing the cost of distributed energy projects in the future.
Although the traditional centralized power supply industry still occupies a dominant position in the current market, in recent years, key technology research and development, equipment manufacturing, system integration, and large-scale application of the distributed energy industry chain have achieved breakthroughs in varying degrees, making it gradually Have a certain advantage of late.
"The outstanding competitive advantages of the distributed energy industry over traditional centralized power supply industries stem from its higher energy conversion efficiency, greatly reduced network transmission losses, low risk of fuel costs, and diversity of primary energy use. The safety and reliability of system operation and the improvement of environmental efficiency, said Wu Libo, deputy director of the Fudan University's Energy Economics and Strategic Research Center.
The energy utilization efficiency of natural gas distributed energy stations reaches more than 70%, while that of traditional coal-fired power plants, coal-fired power generation, is less than 40%. Distributed energy sources save energy costs for a large number of distribution lines because they are close to users for energy conversion. And related pre-construction and operating expenses.
Increasing the comprehensive utilization efficiency can not only reduce costs and improve operating efficiency, but also reduce energy consumption and improve system stability and safety. “The heat supply system in Beijing is an example. Because of the wide area of ​​heat supply, complex urban conditions, and uneven user structure, heat balance and hydraulic imbalance often occur. Thermal systems and heat exchange equipment have low thermal efficiency and poor safety. Problems such as high maintenance costs need to be optimized.†Cheng Baohua told the “China Power News†reporter.
Cheng Baohua calculated an account, after replacing the small heat exchange equipment with integrated and large-scale equipment, according to the calculation of the country’s existing heating area of ​​10 billion square meters, the optimized utilization of the new energy-efficient intelligent heat exchange station board. On the detachable heat exchanger unit increased by about 30%, not only saves parts and piping, while reducing the kinetic energy consumption, saving up to billions of raw materials and accessories.
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