Issues with thermal insulation materials
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For ordinary chemical workshops, what are the best insulation materials for temperatures of 5 degrees, 10 degrees, and -35 degrees?； 170 degrees, 250 degrees
The choice of insulation is related to the material of your equipment’s pipes; for ordinary high-temperature pipes and equipment, ultra-light silicon blankets can be used, as they are easy to install and relatively simple to maintain. For external insulation, aluminum or stainless steel sheets are commonly used nowadays.
Reply 2# caozuogong: It refers to the insulation of pipelines, specifically chemical industry pipelines
This post was last edited by pzhmotor on 2011-5-16 at 11:33. Reply to 3# 396956424: The best insulation material for chilled water is polyurethane (which requires molding and pouring); polyethylene pipe shells of various sizes can also be used. The most convenient option for installation is a silicate insulation layer. Silicate fiber boards are commonly used for insulating thermal pipelines. For details on thickness, installation, etc., refer to: \"HG-T 20570.11-95 Selection of Insulating and Thermal Insulation Types\" and the \"Power Pipeline Design Manual\" ； There is an electronic version on the forum; the original poster can search for it.
Reply to 5# pzhmotor: What is the difference between polyurethane and polyethylene pipe housings? I’ve looked up a lot of information, and it says that polyurethane is used in such applications, but our company has chosen to use polyethylene pipe housings; I don’t know why
This post was last edited and replied to by pzhmotor on 2011-5-16 at 13:14. Reply to 6# 396956424: Polyurethane is foamy; after the mold is prepared, it is injected using a gun, and it will foam up on its own to fill the mold completely. The finished filler feels very much like sponge (it’s probably a sponge). A polyethylene tube shell is a mold made in the factory according to the diameter of the pipe’s outer shell (it’s the white cushioning material found in the packaging boxes of refrigerators and color TVs). When in use, stick the two halves of the shell together. . Polyethylene pipe shells also provide good insulation, but they are prone to damage during transportation; be sure to check them carefully before installation.
Reply to 7# pzhmotor: Thank you for your explanation. I still don’t understand what the difference is. Is it simply a difference in installation? Is polyethylene more prone to damage, or is it related to the operating temperature, along with cost considerations?
What are the insulation materials used for chemical industry pipelines, and what are the specific temperature requirements? You can make your choices based on the standards \"HG-T 20570.11-95 Selection of Insulation Types\" and the \"Design Manual for Power Pipelines\", as well as the technical specifications for insulation of petrochemical equipment and pipelines SH3010-2000. These standards provide detailed requirements regarding the selection of insulation materials, the thickness of the insulation layer, and the methods for calculating such thickness in the design of insulation structures
Removable thermal clothing can be used; the best materials for high temperatures can withstand 2000°C, while those suitable for extremely low temperatures can reach -180°C. For temperatures of 250°C, aluminum silicate or glass fiber cotton should be used