Stainless steel heat exchanger tubes have very good antioxidation properties, and are safe and sanitary, which are widely used in food, medicine, heating, domestic water, air-conditioning backflow and other fields. Stainless steel heat exchanger tubes have better heat transfer effects than those of traditional carbon steel heat exchanger tubes, and a relative long service life. The heat exchanger tube is made from food grade stainless steel, which has outstanding anti-rust and anti-scaling properties.
Types of stainless steel heat exchanger tubes
There are many types of stainless steel heat exchanger tubes on the market, mainly stainless steel smooth tubes, stainless steel threaded tubes, stainless steel corrugated tubes, stainless steel internal wave tubes, stainless steel U-shaped tubes and stainless steel coiled tubes. Although there are many types of stainless steel heat exchanger tubes, their principles are basically the same. The heat exchange of stainless steel heat exchanger tubes is actually to transfer medium heat, and there are three heat transfer methods, namely conduction, convection and radiation. The first one is to transfer energy by particles with low energy and high energy through direct contact and collision. The second one refers to hot and cold parts of the gas or liquid which make temperature even by rotation and circulation. The third one is to radiate heat directly from the heat source to the outside world.
Seven characteristics of stainless steel heat exchanger tubes
The stainless steel heat exchanger tube transfers heat for the fluid through forced convection. The fluid is pumped into the heating chamber with a pump at one end of the heater, and after heating, it flows from the other end of the heater. It is a heating method that is forced to circulate by a pump. Compared with the traditional heating method, the stainless steel heat exchanger tube has significant energy saving, scientific process, convenient installation and use as well as obvious economic benefits. It also has the following features:
1. Small sizes and great power: the electric heater mainly uses clustered tubular heating elements inside, and each clustered tubular heating element has a power of 5000KW.
2. High comprehensive thermal efficiency: the stainless steel heat exchanger tube has fast thermal response and high temperature control accuracy.
3. Wide application ranges and good adaptability: the circulating heater can be used in explosion-proof or ordinary occasions. Its explosion-proof grade can reach grade B and C, and its pressure resistance can reach 20Mpa. Vertical or horizontal installation can be adopted for the cylinder according to the user's needs.
4. High heating temperature: the designed working temperature of the heater can reach 850℃, which is not available in general heat exchangers.
5. Fully automatic control: the heater circuit design can easily realize automatic control of outlet temperature, pressure, flow and other parameters, and can be connected to a computer to have dialogue between people and devices.
6. Long life and good reliability: the heater is made from special electric heating materials, and the design power load is reasonable. The heater adopts multiple protections, which greatly increases the safety and life of heaters.
7. The stainless steel heat exchanger tube adopts a metal tube as the shell, and spiral electric heating alloy wires (nickel chromium and iron chromium alloys) are uniformly distributed along the central axis of the tube. The gaps are filled and compacted with magnesia sand with good insulation and thermal conductivity. The two ends are sealed with silica gel or ceramic. This metal armored electric heating element can heat air, metal molds and various liquids. The high temperature electric furnace wire is evenly distributed in the high temperature resistant stainless steel seamless tube, and the gap is densely filled with crystalline magnesium oxide powder with good thermal conductivity and insulation performance. This structure is not only advanced and has high thermal efficiency, but also generates uniform heat. When a current flow goes through the high temperature electric furnace wire, the heat generated is diffused to the surface of the metal tube through the crystalline magnesium oxide powder, and then transferred to the heated part or air to achieve the purpose of heating.
