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tan jiao guan zhi jing bian hua dui shui beng xing neng de ying xiang
Author(s): 
Pages: 14
Year: Issue:  7
Journal: Farm Machinery

Keyword:  水泵性能有机户管道阻力性能指标成反比有益无害;
Abstract: <正> 不少有机户在浇地时,因胶管(或塑料管)损坏,更换了比原直径大的胶管,使用时发现水的流速明显降低。而再换上原胶管时,水的流速又大大提高。因此不敢使用比原直径大的胶管,怕水泵超负荷或影响水泵各项性能指标。其实,胶管直径变化对流速的影响很容易理解。若管道内液体的流量一定,直径变大,则流速降低;
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