Lab 10

# Lab 10 - ECOR 2606 Lab 10 Question 1 File SCO2 contains...

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ECOR 2606 - Lab 10 Question 1: File SCO2 .txt contains tabulated NIST (National Institute of Standards and Technology) data for supercritical carbon dioxide. Column one is the temperature (in K), column two is the pressure (in bar), column three is enthalpy, column four is entropy, column five is the constant volume specific heat (C V ), and column six is the constant pressure specific heat (C P ). The data can be imported into the Matlab environment by using load command: load SCO2.txt Provided that Matlab is able to find the file (it must be in a folder on your path) this will produce a variable called SCO2 and having 161 rows and 6 columns. We are interested primarily in columns one (temperature) and six (C P ). For convenience, create two vectors containing the values in these columns. In theory, the enthalpy change between any two temperatures can be calculated by integrating C P . 2 1 T T p dT C h Use numerical integration to integrate Cp between 300 K (first row of SCO2) and 1100 K (last row of SCO2). Use both trapezoidal integration and Simpson's 1/3 rule. The trapezoidal integration can be

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