Lab 3 simulation

CHE 4613 Chemical Engineering Modelling and Simulation LAB No: 3 Modelling and Simulation of Pressure Changers: Compressor Student Name Student ID Number No late submission is accepted! 1 CHE 4613 LAB 3 Objective • to study about the pressure changers model libraries namely compressors • to simulate compressors and determine the design specifications of compressors including the following: indicated horsepower; brake horsepower; net work required; power loss; efficiency; mechanical efficiency; outlet pressure; outlet temperature; isentropic outlet temperature; vapor fraction; displacement; volumetric efficiency . . . Lab Resources Aspen Plusr software Procedure/Method Compressors, generally used to increase the pressure of a gas, are an integral part of many production processes in the oil and gas, energy, and chemicals industries. Compressors handle the gases unlike pumps which used to handle liquids. As gases are compressible, the compressor also reduces the volume of gas. Compression ratio, Rc , is simply the absolute discharge pressure divided by the absolute suction pressure 1. In Aspen Plus, to avoid droplets in the gas entering a compressor (inlet): Make sure that the vapor fraction is always equal to one. 2. Define stream entering the compressor 3. Select compressor from object palette 4. Give name to the out of the compressor 5. Select the type of compression process(compressor type) 6. Add name for the duty of the compressor 7. Enter the desired pressure out in worksheet of the compressor 8. Put the efficiency of the compressor in parameters Out Comes Students will get hands on experience in modeling and simulation of Compressors Save your simulation file using your ID as backup: H00abcdefLAB3.bkp and upload in BBL along with results reported in this file as H00abcdefLAB3.pdf CHE 4613 LAB 3 Problem Statement Assume your HCT student ID number is: H00abcdef A compressor is used to cover the pressure drop during the transportation of natural gas between to compressor stations. The inlet temperature of natural +e gas is 21+ a+b+f5+e+4d = 29.4 C , inlet pressure of 4.9+ 3a+b+2f = 9.775 MPa , 8 3 m and the compressor pressure ratio is 5 + 2a+3b+c = 8.2 . One million day 5 of natural gas with the composition given in Table 1 is processed. Table 1: Natural Gas molar composition Component mol% CH4 92% C 2 H6 3% C 3 H8 2% N2 2.5% CO2 0.5% Simulate this isentropic compression process, using Peng-Robinson Equation of State. Determine the following parameters shown in Table 2, if the isentropic efficiency is 92% and mechanical efficiency is 76%. Table 2: Design parameters of isentropic compressor Indicated horsepower kW Brake horsepower kW Net work required kW Power loss kW Efficiency Mechanical efficiency Outlet pressure bar Outlet temperature C Isentropic outlet temperature C Save your simulation file using your ID as backup: H00abcdefLAB3.bkp and upload in BBL along with results reported in this file as H00abcdefLAB3.pdf CHE 4613 LAB 3 Analysis and Discussion Analyse and discuss how the compressor efficiency and power consumption affect the other characteristics of the compressor. Save your simulation file using your ID as backup: H00abcdefLAB3.bkp and upload in BBL along with results reported in this file as H00abcdefLAB3.pdf CHE 4613 LAB 3 Conclusion Save your simulation file using your ID as backup: H00abcdefLAB3.bkp and upload in BBL along with results reported in this file as H00abcdefLAB3.pdf