What are the matters needing attention when installing rock wool board in cold storage
Many businesses now have their own cold storage and install semi-hermetic refrigeration compressors, through which food can be well preserved. So what should we pay attention to when installing rock wool board in the cold storage.
1. Pay attention to rain prevention and do not work on rainy days.
2. A moisture-proof layer must be added for cold preservation. Under the condition of extremely low temperature, resin-free rock wool is used for heat insulation, and the moisture-proof layer must also be fireproof.
3. When the temperature exceeds a certain temperature, such as 200°C, proper external protection must be added to the insulation, so that the thickness and bulk density of the rock wool board will not change.
4. Regarding the thermal insulation of large-diameter and flat-walled equipment using rock wool finished products, when the temperature exceeds 200 ℃, we must bear in mind the instructions of the rock wool board manufacturer: add insulation nails, (spacing about 400mm), the outer protection should be tight.
5. Appropriate coatings can be used for equipment that needs heat preservation, heat preservation nails, and pipes for corrosion protection. In addition, there should be no leakage. This can achieve better results.
6. When the finished rock wool board is easy to be mechanically worn under the condition of outdoor heat preservation, metal or plastic wrap should be used, and then pay attention to the joints and the sealing of the joints. If necessary, add glue seals. The wrapping layer is not less than 100mm. .
7. When the insulation object is placed at 90 degrees and has a certain height, the insulation layer of the rock wool board must have positioning pins or supporting rings, and the spacing must not be greater than 3 meters to prevent the insulation material from sliding down when there is vibration .
8. In order to achieve the small target of heat loss z*, the joints of rock wool board and felt must be tightly connected. If there are multiple layers of insulation, the cross joints need to be interwoven to avoid forming a thermal bridge, which must be eradicated during cold insulation. Cold bridge.
Therefore, cold storage is not something you can build if you want to. There are many aspects that need to be considered. Only when all aspects are considered and all the problems that will occur in the future are solved, there will be no problems in future use.
What are the matters needing attention when installing rock wool board in cold storage
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