In 1879, Edison invented the world's first incandescent lamp, using carbon wire as a filament, opened the first revolution in the history of human lighting. The principle of incandescent lamp is that the filament generates heat, the luminous efficiency is low, and the efficiency of converting electric energy into light energy is less than 5. In the 1940s, fluorescent lamps appeared, and the energy conversion efficiency increased to 25, which became the second revolution of lighting technology. In 1962, LED light sources appeared, and the energy conversion efficiency increased to more than 60. Compared with various traditional light sources, LED light sources have the advantages of long service life, excellent energy saving performance and rich colors, which have become the third revolution of lighting technology. With the continuous development of LED technology, LED is breaking through the problems of light decay, heat dissipation and light efficiency, and has gradually become a recognized new energy-saving and environmental protection light source. It has been widely used in landscape decorative lighting, portable lighting, outdoor architectural lighting and other fields. Since 2011, LED lighting has made breakthroughs in indoor lighting, road lighting and other fields, and is expected to become mainstream around 2015. Development of the domestic LED lighting industry In early 2006, the State Council issued the “National Medium- and Long-Term Science and Technology Development Planâ€, which included the high-efficiency, energy-saving and long-life semiconductor lighting products in the first priority of the first priority area (energy) in the medium and long-term planning. (Industrial energy-saving) has attracted widespread attention at home and abroad; in October of the same year, the National Eleventh Five-Year Plan 863 Program Semiconductor Lighting Project was officially launched. On January 10, 2008, the Ministry of Finance and the National Development and Reform Commission jointly issued the Interim Measures for the Administration of Financial Subsidy Funds for Efficient Lighting Products to Promote the Rapid Development of the LED Industry. In 2009, the Ministry of Science and Technology launched a pilot project for the application of semiconductor lighting applications in ten cities in 21 cities. Public spaces in the city such as roads, tunnels, parking lots, gas stations and other places have vigorously promoted the installation of LED lighting. On November 4, 2011, the "Notice on the gradual ban on the import and sale of ordinary lighting incandescent lamps" issued by the National Development and Reform Commission and the five ministries and commissions clearly stated that the incandescent lamps will be phased out and planned to be October 1, 2016. Incandescent lamps will completely withdraw from the market. On July 11, 2012, the Ministry of Science and Technology released the "12th Five-Year Special Plan for the Development of Semiconductor Lighting Technology." The plan proposes that by 2015, China's semiconductor lighting industry will reach 500 billion yuan, and cultivate 20-30 leading enterprises with core technologies, more independent intellectual property rights and independent brands, and support 40-50 innovative high-tech enterprises. 50 pilot cities of 10 cities and 10 pilot cities and 20 industrial bases with strong innovation capabilities and distinctive features, improve the industrial chain, optimize the industrial structure, increase market share, and significantly enhance the international competitiveness of the semiconductor lighting industry. The promulgation and implementation of the above policies and measures have greatly promoted the LED lighting industry in China. According to the "2014-2017 China LED Lighting Industry Market Research and Forecast Analysis Report", China's LED lighting industry has experienced rapid growth in recent years. In 2009, China's LED lighting industry output value was only 23.288 billion yuan, but by 2013, China's LED lighting industry output value has exceeded 110 billion yuan, an average annual growth of 49.50. Domestic LED lighting industry competition situation domestic LED lighting companies have tens of thousands However, there is a general situation of small scale, weak technical strength and low product quality. High-end products are still dominated by foreign manufacturers. From the perspective of regional distribution, domestic lighting production enterprises are mainly distributed in the Pearl River Delta region and the Yangtze River Delta region. Similar to the distribution of traditional lighting companies, China's LED lighting companies are also mainly distributed in the above two regions. However, compared with the Yangtze River Delta region, many LED packaging companies and accessory manufacturers are located in the Pearl River Delta region. The Pearl River Delta region has a more complete LED industry chain, so LED lighting companies are more distributed in the Pearl River Delta region. Analysis of the development prospects of the domestic LED lighting industry From the development prospects of China's LED application field, LED lighting faces a broad space for development. In recent years, with the continuous breakthrough of LED white light luminous efficiency and cost reduction, the LEOFweek semiconductor lighting network D has gradually accelerated into the general lighting field, and it is expected to become a substitute for traditional lighting sources such as incandescent lamps and fluorescent lamps in the next few years. tool. In the "2014-2017 China LED Lighting Industry Market Research and Forecast Analysis Report", it also forecasts the future of the LED lighting industry in the next two years. It is estimated that the output value of China's LED lighting industry will increase by 58 in 2014, reaching 180 billion yuan.
A Heat Exchanger Unit is a device used to transfer thermal energy (heat) between two or more fluids. Heat exchangers are used in a wide variety of applications, such as heating and cooling of buildings, industrial processes, and power generation.
The heat exchanger unit essentially consists of heat exchangers such as Plate Heat Exchanger, Shell and Plate Heat Exchanger, or other counterpart, a circulating pump, a fluid make-up pump, thermometers, a filter, sensors, a pipeline and valves. It is also possible to design a temperature control system, pressure stabilization system, variable-frequency controller, heat metering and communication controller, etc. according to the client`s requirements.
Big advantage of heat exchanger unit is that, by adopting a modularized structure, it maximizes each component`s function to the most. The precise control for heat exchange process also saves time and efforts for maintenance and installation.
Feature is that intelligent control, excellently energy-saving, high automation and easy to operate, high cost performance and wide application.
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