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这种新型太阳能泵使用低沸点(64℃)的甲醇有机液体作为工质,按朗肯热力循环工作。在固定式威士顿集热器(太阳辐射吸收面积为2.25平方米)中产生甲醇过热蒸汽,并把该蒸汽引入太阳泵中,用以推动工作汽缸里的松节油液体活塞(松节油既不溶于水也不溶于甲醇蒸汽)这样就直接使水从与工作缸相接的L—型管上升到出水管中。当甲醇蒸汽被排入冷凝器中时,缸内产生局部真空,从而把水从低处水源吸入缸内。冷凝液被馈送回蒸发器,循环连续进行。如图1所示。
The new solar pump uses low-boiling point (64 ° C) methanol organic liquid as working fluid, according to Rankine thermodynamic cycle work. Methanol superheated steam is generated in a stationary Wisteria collector (solar radiation absorption area of 2.25 m2) and is introduced into the solar pump to propel the turpentine liquid piston in the working cylinder (the turpentine is neither soluble in water Also insoluble in methanol vapor.) This causes water to rise directly from the L-tube connected to the working cylinder into the outlet pipe. When methanol vapor is discharged into the condenser, a partial vacuum is created in the cylinder, drawing water into the cylinder from a low level water source. The condensate is fed back to the evaporator and the cycle continues. As shown in Figure 1.