In the paper, the formula of economic friction factor for hydronic heating system with intermediate boosting pump station and different laying mode is derived theoretically.
本文从理论上推导出带中间增压泵站、有不同敷设方式的热水供热网经济比摩阻的计算公式。
Treated oil pipes can decrease the friction damage, increase charge volume and anti scaling for normal operation and enhancing the economic effects in the mine.
经过处理后的防腐油管，能减小摩阻损失，增大排量；防止结垢，保持高排量的持续生产；减少卤井事故的发生，提高企业的经济效益。
Treated oil pipes can decrease the friction damage, increase charge volume and anti scaling for normal operation and enhancing the economic effects in the mine.
经过处理后的防腐油管，能减小摩阻损失，增大排量；防止结垢，保持高排量的持续生产；减少卤井事故的发生，提高企业的经济效益。
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