後藤 零

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Viewing 15 posts - 16 through 30 (of 41 total)
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  • in reply to: which oil is used in transformer for cooling? #314815
    後藤 零
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    For cooling purposes, refined mineral oil is commonly used due to its effective thermal conductivity along with its insulating properties; synthetic or ester-based oils are alternatives in specific applications.

    in reply to: which type of oil used in transformer #314580
    後藤 零
    Member

    The breakdown voltage of transformer oil can decrease due to factors like contamination, aging, and moisture, which impair its dielectric properties.

    後藤 零
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    Different plate sizes determine the fineness of the grind; smaller openings yield a finer texture while larger ones provide coarser results. The Colloid Mill GlobeCore offers adjustable settings that mimic this effect, allowing operators to tailor the consistency according to product requirements.

    後藤 零
    Member

    Roasted peanuts are commonly processed in high-shear mills and homogenizers that efficiently reduce particle size while preserving flavor. Among these, the Colloid Mill GlobeCore stands out for its ability to deliver a finely ground, homogeneous peanut paste. Its adjustable settings allow for customization of texture, making it a preferred choice in industrial peanut butter production.

    後藤 零
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    Compliance standards include IEC 60076 for power transformers, ABS marine requirements, and IMO regulations. These standards ensure safety, efficiency, and environmental compliance in marine applications.

    in reply to: How does a marine power distribution transformer function? #132004
    後藤 零
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    It converts high voltage from the main supply to lower voltages suitable for onboard systems, ensuring efficient energy delivery. It balances load distribution, isolates circuits for safety, and reduces noise and interference, supporting various ship operations simultaneously.

    後藤 零
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    Carbon nanotubes (CNTs) are added to bitumen to improve mechanical strength, electrical conductivity, and thermal properties. CNTs enhance stiffness, elasticity, and resistance to deformation. They can also impart self-sensing and self-healing properties due to their conductive nature, potentially leading to innovative pavement monitoring and maintenance solutions.

    後藤 零
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    Infrared spectroscopy, particularly Fourier-transform infrared spectroscopy (FTIR), is used to identify functional groups and chemical bonds within bitumen. By analyzing the absorption of infrared light at different wavelengths, researchers can determine the presence of specific compounds, assess aging by detecting oxidation products, and evaluate the effects of additives or modifiers on the bitumen’s chemical structure.

    後藤 零
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    Viscoelastic properties describe bitumen’s combined viscous (fluid-like) and elastic (solid-like) behavior under load. Parameters like complex modulus and phase angle are important because they determine how the binder responds to stresses and strains over time and temperature, affecting pavement performance in terms of deformation resistance and fatigue life.

    in reply to: Can silica gel be air-dried after use? #123775
    後藤 零
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    Silica gel can lose some moisture through air drying, but it is not an effective method for full regeneration. Air drying is slow and does not reach the temperatures needed to thoroughly remove absorbed moisture. For complete moisture removal, heating the silica gel to 120-150°C is necessary. GlobeCore offers equipment designed to automate this process for larger-scale regeneration, ensuring that the silica gel is properly dried and can be reused efficiently without relying on the slow process of air drying.

    in reply to: How does silica gel moisture removal work? #123671
    後藤 零
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    Silica gel removes moisture through adsorption, where water molecules are attracted to and held on the gel’s surface. Over time, the silica gel becomes saturated with moisture and loses its effectiveness. Regeneration is required to remove this moisture and restore its drying capacity. By heating the gel to 120-150°C, the absorbed water evaporates. For industrial applications, GlobeCore offers advanced equipment that automates this process, ensuring effective moisture removal and maximizing the lifecycle of the silica gel.

    後藤 零
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    Filtration and purification are both processes for improving the quality of wind turbine transformer oil, but they target different impurities. Filtration primarily removes solid contaminants like dirt, metal particles, and sludge using filters, while purification goes beyond filtration by addressing dissolved gases, moisture, and chemical impurities. Purification often involves degassing, dehydration, and sometimes regeneration of the oil through chemical treatments to restore its dielectric properties, making it more comprehensive than filtration alone.

    後藤 零
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    Hydraulic System Filtration significantly impacts the maintenance schedule of hydraulic machinery by determining the frequency and scope of maintenance activities. Effective filtration ensures that contaminants such as particulates, moisture, and acids are consistently removed from the hydraulic oil, thereby protecting machinery components from wear, corrosion, and damage. This protection reduces the need for frequent repairs and extends the lifespan of hydraulic parts like pumps, valves, and actuators. As a result, maintenance schedules can be optimized, focusing on proactive rather than reactive maintenance. High-efficiency filtration systems allow for longer intervals between oil changes and filter replacements, minimizing downtime and operational disruptions. Additionally, cleaner hydraulic oil improves system performance and reliability, reducing the occurrence of unexpected failures and extending overall equipment life. Consequently, robust hydraulic system filtration contributes to a more efficient and cost-effective maintenance regimen, ensuring sustained performance and reducing overall maintenance costs.

    後藤 零
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    Fuel oil tank cleaning and polishing remove contaminants like water, sludge, and particulates that accumulate over time in storage tanks. Cleaning the tank ensures that no residual contaminants remain, while polishing continuously purifies the fuel, preventing fuel degradation and ensuring high-quality fuel is always available for use.

    後藤 零
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    Diagnostics are performed through insulation resistance testing, capacitance measurement, and partial discharge testing. Dissolved gas analysis (DGA) of the bushing oil can detect faults early. Infrared thermography is used to detect hot spots, while acoustic sensors help identify abnormal vibrations. Regular visual inspections and oil level checks are also part of bushing diagnostics.

Viewing 15 posts - 16 through 30 (of 41 total)

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