The latest report from the US market research organization predicts that the global solid-state lighting (SSL) market will reach US$56.79 billion in 2018, and the compound annual growth rate from 2013 to 2018 will reach 18.7.
According to the latest market research firm MarketsandMarkets, "Solid State Lighting Types (LED, OLED, PLED), Applications (General Lighting, Background Lighting, Automotive Lighting, Medical Lighting), Categories (Industrial, Household, Consumer Electronics), Materials And regional market analysis and forecast (2013-2018) report, the global solid-state lighting market is expected to reach 56.79 billion US dollars in 2018, the compound annual growth rate from 2013 to 2018 will reach 18.7.
The global solid-state lighting market is divided according to the type, application and scope of solid-state lighting. Among them, the types of solid-state lighting include LED, OLED and PLED (polymer light-emitting diode), and the LED can be further subdivided according to the materials used in different stages of the production process.
LEDs are mainly used in general lighting and background lighting. In addition, the energy efficiency of solid-state lighting will be combined with lighting-based medical technology. For example, surgical lights use low-heating LEDs to create a comfortable working environment for surgeons and patients.
OLEDs have a high market share in background lighting applications. Demand for OLEDs is rising due to the diverse uses of OLEDs and better display characteristics. As production costs decrease, the price of OLED displays will drop, further penetrating the display market and gradually replacing LCD and LED display technologies. Many Asian companies have targeted the OLED device and materials market and are striving to be the leader. It is expected that the compound annual growth rate of OLEDs will likely reach more than 25.
In 2012, general lighting and background lighting accounted for 87% of the global solid-state lighting market. The Asia-Pacific region is the global leader in the solid-state lighting market. In 2012, the regional market share reached 50%, followed by North America and Europe, with market share respectively. 23.9 and 19.9. In addition, Russia, Brazil and the Middle East accounted for a total of 6.3 global market share in 2012.
A shell and tube heat exchanger is a type of heat exchanger that is commonly used for heating, cooling and condensing applications. lt consists of a shell with an internal bundle of tubes,which allows the hot and cold fluids to pass through the walls of the exchanger and exchange their energy. Shell and tube exchangers are classified in several ways, including design, operational construct, and construction materials. Mainly Fixed Tube Heat Exchanger, Floating Head Heat Exchanger, U-tube Heat Exchanger, and double tube heat exchanger.
The working principle of a shell and tube heat exchanger is relatively simple. The system is designed with two separate flows on either side of the heat exchanger. The primary flow of the hot fluid passes through the tubes, while the secondary flow of the cold fluid passes through the spaces between the tubes. Heat is then transferred from the hot side to the cold side via conduction, leading to an exchange of temperatures.
Shell and tube heat exchangers are normally used in process plants and used in a wide range of applications. A case in point is the cooling of condensates in refineries and nuclear power plants. In this application, condensate is heated using an external source and passed through the tube section of the heat exchanger. This condensate is then cooled and condensed as it passes through the shell side, where the heat is transferred to a cooling medium such as water, steam or oil.
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