Problems with insulation materials for pipeline equipment

Regarding the choice of rock wool, high-temperature glass wool, and mineral wool in construction, here are my thoughts to stimulate further discussion: 1. Based on the temperature range in which the pipes and equipment operate (mineral wool should be used for temperatures above 380 degrees). 2. Considering cost factors (mineral wool is the most expensive among the three, followed by glass wool, with rock wool being the most economical). 3. Taking environmental considerations into account (rock wool and glass wool contain large amounts of glass fibers, which can pose risks to workers and the surrounding environment during construction, especially in windy conditions; therefore they are considered obsolete products). These are some of the factors that should be taken into account when making a choice

When all requirements need to be met, using slightly lower quality materials for pipes and higher quality materials for equipment – does this fall under psychology?

Due to environmental concerns, rock wool is no longer allowed to be used in many places. . The choice of insulation material depends on the temperature of the specific insulated pipeline or equipment, as well as the required level of heat loss. Insulation and cooling materials have different heat transfer coefficients; typically, the decision is made based on economic feasibility, as well as the owner’s preferences for consistency and uniformity. For pipes with a diameter of less than 200, I usually choose aluminum silicate pipe shells, while for pipes and equipment with a diameter of more than 200, I opt for aluminum silicate curved panels.

Due to environmental concerns, rock wool is no longer allowed to be used in many places. . The choice of insulation material depends on the temperature of the specific insulated pipeline or equipment, as well as the required level of heat loss. Insulation and cooling materials have different heat transfer coefficients; typically, the decision is made based on economic feasibility, as well as the owner’s preferences for consistency and uniformity. For pipes with a diameter of less than 200, I usually choose aluminum silicate pipe shells, while for pipes and equipment with a diameter of more than 200, I opt for aluminum silicate curved panels.

Is it perhaps for the sake of ease of construction? Is glass wool too hard? It’s fine for covering large equipment, but it’s difficult to use for covering small pipes; rock wool is more suitable in such cases

These days, glass wool is generally used; rock wool is **phased out and prohibited from use**. Maybe the design was entered incorrectly or hasn’t been corrected yet. I communicated with the designer and suggested that he use the same glass wool.

This is mainly determined by temperature and cost-effectiveness. The commonly used insulation materials are roughly three types: glass wool, rock wool, and aluminum silicate. In terms of performance, centrifugal glass wool is suitable for temperatures relatively low, around 200 degrees or less, while high-temperature glass wool can be used at temperatures up to about 350 degrees. High-temperature glass wool is a material with moderate performance and price, making it suitable for the vast majority of applications. Rock wool is the cheapest, has a wide temperature range that allows it to be used up to 450 degrees, but it offers the worst insulation performance, the lowest quality, and the poorest environmental compatibility. Aluminum silicate provides moderate thermal insulation, but it is heat-resistant; it is generally the preferred choice for temperatures above 350 degrees, although its price is correspondingly higher. Of course, what is mentioned here refers to purchasing products of good quality; the shoddy goods produced by small workshops are not within the scope of discussion.

I see that the pipes below 200 degrees are made of rock wool, while those above 200 degrees use composite aluminum silicate pipe shells

Why is rock wool being phased out? It seems to be used quite a lot

What I see is that below 200 degrees it’s rock wool, above 200 degrees it’s composite aluminum silicate, and the material used in the equipment is glass wool