shanghai yongxian Infra red drying

Added: (Fri Aug 27 2010)

Pressbox (Press Release) - One way to improve drying operations is to add or use infrared energy.
Infrared energy can be generated by electric or gas infrared heaters or emitters. Each energy source has advantages and disadvantages. Typically, gas infrared systems are more expensive to buy because they require safety controls and gas-handling equipment, but they often are less expensive to run because gas usually is cheaper than electricity. Gas infrared is often a good choice for applications that require a lot of energy. Products such as nonwoven and textile webs are examples where gas often is a good choice. infrared wavelength Gas IR heaters produce an that is readily absorbed by the water in the sheet. This leads to a higher temperature and a drying efficiency increase that cannot be duplicated by conduction and convection temperatures alone.By contrast, electric infrared is likely better for sensitive substrates such as film and certain fabrics, where extreme control and uniformity is required. Electric infrared heaters can be divided into multiple, separately controlled temperature zones with tolerances as tight as +/-1 F. Both electric and gas infrared typically are controlled by thermocouple feedback control loops that regulate the electrical power or fuel mixture going to the infrared heaters. For more precise control, temperature feedback from the product using an optical pyrometer is used.