8.卡诺循环(Carnot cycle)是只有两个热源的简单循环。如图所示是卡诺循环的PV图像,卡诺循环包括四个过程:a→b等温过程;b→c绝热膨胀过程;c→d等温过程;d→a绝热压缩过程。整个过程中封闭气体可视为理想气体,下列说法正确的是(aP2C0A.a→b过程,外界对气体做功B.c→d过程,气体放出热量C.a→b过程温度为T1,c...
What is the corresponding Carnot efficiency? 9. Sketch a pressure versus volume and a temperature versus volume diagram for the process described. 10. Derive a formula for the efficiency as a function of the compression ratio, r. Plot a curve of efficiency vs r in the range 1<r⩽100. ...