- 1 The Company Has Requested That You Run Experiments To Determine The Best Combination Of Factors To Improve The Perfor 1 (70.42 KiB) Viewed 10 times
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1. The company has requested that you run experiments to determine the best combination of factors to improve the performance of a refrigeration system. There are four factors to be studied, as shown in Table Q1a. Measured performance levels are shown in Table Q1b. (a) Using SN (signal-to-noise) methodology, determine which factor is the dominant one. . [16 marks) (b) Confirm the optimal combination of the operational parameters using main effect analysis. [7 marks] (c) Using graphical method show if there is any interaction between factors B and C. [10 marks] Level 1 Level 2 Heat Exchanger Shell-in-tube Plate Compressor type Centrifugal Scroll Refrigerant type Ammonia R134a Table Qla. Heat pump operating factors and conditions. 1 Exp. А B с COP 1 COP 2 COP 3 1 1 1 2 3 2 2 1 2 2 3 3 4 3 2 1 2 2 4 2 4 2 2 1 3 2 4 Table Q1b. Taguchi L4 orthogonal array. COP for each experiment has been evaluated three times.