Is the aluminum foil bellows insulated or thermally conductive?
Aluminum foil bellows are heat insulated and heat conducting, but their use is neither thermal insulation nor thermal conductivity, but the delivery of fluids. Bellows are made to facilitate bending and flexing.
It depends on the intention of using the pipe! Aluminum foil has good thermal conductivity! But he can reflect the heat of radiation! His bellows also have a few points, one is corrugated tubes, heat exchange area much larger than the light pipe, and there is bellows flexibility is better! It is not easy to break in thermal expansion and cold contraction! So this kind of pipe is widely used in the field of heat conduction!
1, aluminum foil bellows both heat insulation and heat conduction, but its use is neither heat insulation nor heat conduction, but the transport of fluid. Bellows are made to facilitate bending and flexing.2. Bellows is a tubular elastic sensitive element connected by folding and extending along the folding direction. Bellows are widely used in instruments and meters. The main purpose is to change the pressure into displacement or force as a measuring element of a pressure measuring instrument. The corrugated pipe has thinner wall and higher sensitivity, and the measuring range is from tens of kPa to tens of mpa. The opening of the utility model is fixed, the sealing end is in a free state, and the auxiliary spiral spring or reed is used to increase elasticity. Under the action of internal pressure, the length of the pipe extends along the length of the pipe so that the movable end has a displacement that is related to the pressure. The movable end drives the pointer to directly indicate the magnitude of the pressure. Bellows are often combined with displacement sensors to form pressure sensors that output power, and are sometimes used as isolating elements. Due to the extension of ripple tube for volume changes greatly, so the response speed of the Bourdon tube below. Bellows are suitable for measuring low pressure.3, a kind of aluminum rolled into sheets of hot stamping material, the effect of stamping and silver foil stamping similar effects, it is also called the false. Because of its soft texture and good ductility, it has a silvery luster. If the rolled sheet is made of sodium silicate on the offset paper, the foil can be printed. But the aluminum foil itself is easy to oxidize and the color is dull, friction, touch and so on will fade. Therefore, it is not suitable for the long-term preservation of books, covers and other hot stamping.
