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据有关统计资料,我国各种农用水泵的总保有量达500多万台,每年平均耗电约160万亿度(1度=3.6×10~6焦耳),占农村用电总量的40%;耗柴油200万吨,占农用柴油的25%。其中,口径小于700毫米的中小型离心泵和混流泵,占的比例很大。因此,对中小型水泵装置进行节能研究,利国利民。水电部规定,水泵站的装置效率应不低于54.4%。据能源单耗计算公式可知:
According to relevant statistics, the total amount of all kinds of agricultural water pumps in our country reaches more than 5 million units, with an average annual consumption of about 160 trillion degrees (1 degree = 3.6 × 10-6 Joules), accounting for 40% of the total rural electricity supply. ; Consumption of diesel 2 million tons, accounting for 25% of agricultural diesel. Among them, the caliber of less than 700 mm small and medium-sized centrifugal pumps and mixed-flow pumps, accounting for a large proportion. Therefore, small and medium-sized pump device for energy-saving research, Li Guo Min. Ministry of Electricity and Water provides that the efficiency of the pumping station should not be less than 54.4%. According to energy consumption calculation formula shows: