hw9_solution

hw9_solution - Homework 8 Solution(40 points total 10...

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Homework 8 Solution (40 points total, 10 points/question) 1. 15.6 on SEEcon Book, (If assume weight of 0.15 for energy savings and safety, 0.05 for accounting and savings analysis, and 0.10 for the rest) Weighted Sum Analysis: ---2 points If using this rating scale: outstanding 10 very good 9 good 7 adequate 5 margin 3 poor 1 none 0 We will get: ---4 points Criteria Energy, Inc. Micro Controls Econetics Steady-state energy savings 10%*15 = 150 8%*15 = 120 12%*15 = 180 Controls 5*10 = 50 9*10 = 90 3*10 = 30 Ease of operation 5*10 = 50 7*10 = 70 5*10 = 50 Diagnostics 5*10 = 50 7*10 = 70 1*10 = 10 Availability 0.990*10 = 9.9 0.995*10 = 9.95 0.975*10 = 9.75 Growth/update capability 5*10 = 50 7*10 = 70 5*10 = 50 Safety features 9*15 = 135 7*15 = 105 5*15 = 75 Accounting system 7*5 = 35 7*5 = 35 9*5 = 45 Vendor reliability, support 9*10 = 90 7*10 = 70 5*10 = 50 Savings analysis package 7*5 = 35 0 * 5 = 0 0 * 5 = 0 Total 645+9.9 = 654.9 630+9.95=639.95 490+9.75=499.75 Based on the weighted sum analysis, Energy, Inc. seems to provide the best solution. Note : student may assign weight to availability or not to, either way should be ok. You could also assign other weights, like all the weights are equal. DSC Analysis: ---4 points For DSC, the rating scale should be reduced to be between 0.0 to 1.0.

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