In the paper, the formula of economicfriction 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。
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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.