What is the difference between an air heater and a finned tube?

What is the difference between an air heater and a finned tube?

The air electric heater is a heat exchange device that converts into heat energy. It has the advantages of convenient energy supply, compact structure, automatic temperature control, easy installation and maintenance, and no pollution. The electric heater is composed of a tubular container and electric heating elements, and is equipped with a temperature control cabinet (set). The control part adopts advanced digital circuits, integrated circuit triggers, high back pressure thyristors, etc. to form an adjustable temperature measurement and constant temperature system to ensure the normal operation of the electric heater.

The heating element adopts a straight tube type instead of a U-shaped structure, and a special plate hand is used for easy installation and disassembly. The temperature control adopts thyristor adjustment, PID digital display, within the temperature control range, the required temperature can be set arbitrarily, and the constant temperature is automatically maintained, and the control temperature is ±5°C. It also has over-limit sound and light alarm and multiple protection functions, which can be controlled locally or remotely. Special requirements can also be designed and manufactured.

The finned tube is to improve the heat exchange efficiency. Usually, fins are added on the surface of the heat exchange tube to increase the external surface area (or internal surface area) of the heat exchange tube, so as to achieve the purpose of improving the heat exchange efficiency. Heat pipe. As a heat exchange element, the finned tube works under high temperature flue gas conditions for a long time. For example, the finned tube for boiler heat exchanger is used in harsh environment, high temperature and high pressure and in a corrosive atmosphere, which requires the finned tube to have high performance index.