德耐尔两级压缩工频-微油螺杆式压缩机DA-37+

两级压缩空压机何以比单级压缩节能?
ow could hvo stage compression compressors be moe energy
根据压缩机的工作原理知道,等温压缩是相对省功的。右图为压缩过程的示功图,曲线12’3’为等温压缩过程,与纵坐标形成的saving than single stage compressing ones?面积613'4为等温压缩的指示功。曲线123”为一级压缩过程,与纵坐标形成的面积613”4为一级压缩的指示功。曲线12、22'、2'3为两级压缩过程,与纵坐标形成的面积6125和52'34之和(612234)为两级压缩的指示功。由图示可以看出,等温压缩过程613'4面积(指示功)*小,但在压缩机实际压缩过程中无法做到等温压缩,一级压缩比等温压缩多出了133"面积的功率,而两级压缩则比一级压缩节省了2'23"3面积的功率。
PP3
According to the working principle of the compressor, isothermalcompression is relatively energy-saving. The right figure is the indicatordiagram of the compression process, the curve 12 '3 'is the isothermacompression process, and the area 6l3 ' 4 formed with the ordinate is theindicator work ofthe isothermal compression. The curve 123 " is the primarycompression process, and the area 6l3 " 4 formed with the ordinate is theindicator work of the primary compression. Curves 12, 22 'and 2’3 aretwo-stage compression processes, and the sum of the areas 6125 and 52 '34formed by the ordinate (6122'34)is the indicative work of two-stagecompression. lt can be seen from the figure that the 6l3 ' 4 area (indicatingwork)in the isothermal compression process is the smallest, but theisothermal compression cannot be achieved in the actual compressiorprocess of the compressor. The first stage compression has 13 '3 " morepower than the isothermal compression, while the two stage compressionsaves 2 '23 "3 area power than the first stage compression.