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'复盛离心式制寒紧缩机的特征曲线'

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'复盛,离心,式制,寒,紧缩机,的,特征,曲线,对付,'

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'2019-03-30 11:19:32'

'2019-03-30 11:19:32'

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'<p>对付一般复盛离心式紧缩机，为了较清楚地反应其特征，凡是在某一转速情形下， 将排气压力和蔼体流量的关系用曲线表现。</p><p>对付离心式制寒紧缩机，寒凝压力对应于必定的寒凝温度，气体流量对应于 必定的寒凝温度，气体流量对应于必定的制寒量。</p><p>是以，制寒紧缩机的特征可用制寒量与寒凝温度(或寒凝 温度与蒸发温度的温差) 的关系曲线表现。</p><p>即制寒紧缩机的特征曲线与一般紧缩机的区别，在于它和寒凝器、 蒸发器的运行情形有关。</p><img alt="某空调用复盛离心式制冷压缩机特性曲线" src="2018/1228/2199.jpg" /><p>图5-17所示为某空挪用离心式制寒紧缩机在必定转速下的特征曲线。它表现了在不同蒸发温度1(lo=2、4、69℃) 时，温差及紧缩机的轴功率P与制寒量Q的关系。</p><p>由图可见，蒸发温度和寒凝温度的变化对制寒量都有较年夜的影响。</p><p>当寒凝温度不变时，制寒量随蒸发温度的升高而增年夜。当蒸发温度不变时， 制寒量随寒凝温度的升高而降落。</p><p>紧缩机的轴功率一般情形下随制寒量的增年夜而增年夜，但当制寒量增年夜到某 一较年夜值后产生陡降。</p><p>当经由过程紧缩机的流量与经由过程制寒装备的流量相等，涡旋空压机发生的压差(排气口 压力与吸气口压力的差值)即是制寒装备的阻力时，整个制寒体系能力坚持在 均衡状态下事情。</p><p>如许制寒机组的均衡工况应当是紧缩机运行特征曲线与寒凝器特征曲线的交点。</p><p>图5-18 中紧缩机特征曲线与寒凝器特征曲线的交点A 为紧缩机的不乱事情点。</p><p>当寒凝器寒却水入水量变化时，寒凝器的特征曲线将转变，这时交点A 也随之而转变，从而转变了紧缩机的制寒量。</p><p>假如寒凝器入水量削减，则寒凝器特征曲线斜率增年夜，曲线I移至I&#39;的地位， 紧缩机事情点移到A&#39;点，制寒量削减。</p><p>反之，假如寒凝器寒却水入水量增年夜，则寒令凝器特征曲线斜率减小， 曲线1移至I&#39;的地位，则紧缩机事情点移至A&rdquo;点，制寒量增年夜。</p>'

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'复盛离心式制寒紧缩机的特征曲线_常见问题_技术中心_复盛空压机(华北)总代理'

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