Cooling method for gas turbines. Refer to the Journalof

Step 1 of 8

Let y be the heat rate of a gas turbine,  is the cycle speed and  is the cycle pressure

ratio.

Here we have to obtain the estimated model,  and

conduct a complete residual analysis for the model.

Using MINITAB, we fit the above model and conduct the residual analysis for the

fitted model in the following steps.

Step1:  Import the data into the columns of the worksheet and find the product value of

             and  in another column (named  ).

Step2:  Select Regression... ?om the Regression tab of Stat ribbon.

Step3:  Specify the column y in the Response box and the columns ,  and , as

            Predictors.

Step4:  Check Histogram of residuals, Residuals versus fits, and Residual versus

            order in Residual plots and specify the columns ,  and  in Residuals

            versus the variables in the Graphs... tab.

Step5: Click Ok.