Thermodynamics Project

1.Water vapor in a piston-cylinder is heated at a constant temperature of 400 o F from saturated vapor to a pressure of 100 lbf/in2 . Determine the work, in Btu per pound of water vapor, by integration of Eqn. 2.17 in your textbook: (a) numerically with steam table data (at least 10 data points in the considered range) 2. Steam enters an insulated turbine operating at steady state with negligible velocity at pressure and temperature measured as 4 MPa and 320 oC, respectively. The steam expands to an exit pressure of 0.07 MPa and a velocity of 90 m/s. The diameter of the exit is 0.6 m. State any assumptions and determine and plot the power developed by the turbine, in kW, versus the steam quality at the turbine exit ranging from 0.8 to 1.0 (in increments of 0.02 or less). Solve by hand for x = 0.8 and using any software package (such as Excel) for the quality range. Discuss your findings and comment on the desirability and the implications on actual turbine operation of a steam quality lesser than 1. 3. Technical Paper Assignment Many new substances have been considered in recent years as potential working fluids for power plants or refrigeration systems and heat pumps. What thermodynamic property data are needed to assess the feasibility of a candidate substance for possible use as a working fluid? Write a paper discussing your findings, following a customary format as in the sample posted on the class website. Students will work in groups of 2 – 3, each student in the group should contribute equally and provide at least 4 cited publications (books, articles, research papers or other technical publications) to support their case.