An engineer proposes to eliminate the condenser in an ideal Rankine cycle to form an open cycle. Lake water is available at 16°C. The lake water is pumped to 5 MPa and then heated at constant pressure to 400°C. The “spent” steam is rejected back into the lake. Determine the first-law thermal efficiency of this…

A simple Rankine-cycle steam power plant operates with a steam flow rate of 500,000 lbm /hr. Steam enters the turbine at 500 psia and 1000 F. The turbine exhaust (condenser inlet) conditions are 1.0 psia with a steam quality of 0.90. Determine the following: A. Turbine output (kW) B. Condenser heat rejection rate (Btu/hr) C.…

1. Air enters the compressor of a Brayton cycle at 20°C and 1 atm. The turbine inlet state is at 800°C and 3.4 atm. Determine the net power per unit mass flow rate (kJ/kg) and the cycle thermal efficiency 2. Solve Problem 8.76 using helium as the working fluid instead of air. Compare your results…

Wridemy Plagiarism Free Paper Writing Website. Visit us here Wridemy An auditor is required to obtain sufficient understanding of each component of an entity’s internal control system to plan the audit of the entity’s financial statements and to assess control risk for the assertions embodied in the account balance, transaction class, and disclosure components of…

An old V-8 spark-ignition engine has a 4-in-diameter cylinder and a 4- in-long stroke. The intake conditions are atmospheric (70 F and 14.7 psia). The engine has a compression ratio of 9. (See Appendix 1A to review the geometrical relationships.) The peak cycle temperature is 4000 F. Assuming constant specific heats and using the Otto…

A Carnot refrigerator removes energy at a rate of 300 Btu/hr from a low-temperature thermal reservoir at −160 F. The high-temperature reservoir for the refrigerator is the atmosphere at 40 F. A Carnot engine operating between a reservoir at 1140 F and the atmosphere (40 F) drives this Carnot refrigerator. A. At what rate must…

An evaporative cooler for an automobile consists of an 18-in-long by 8- in-diameter cylinder that hangs on the outside of the car. At 55 mph the cooler processes 4500 lbm of dry air per hour. During desert driving the air is at 100 F with a 10% relative humidity. Inside the cooler, the air passes…

Wridemy Plagiarism Free Paper Writing Website. Visit us here Wridemy Part 1 (500-750 words)In preparation for the Bovar Company’s year-end audit, your manager has asked you to create a document about auditing principles and the code of conduct to share with the rest of the internal auditors. You know that the Institute of Internal Auditors…

Cooling water from an internal combustion engine is to be cooled from 150 to 110 F. The pressure is 14.7 psia. Compare the following three methods with respect to air and/or city water required (lbm /1000 gallons of engine cooling water): A. Heat transfer to city water. The city water temperature increases from 70 to…

Humid air enters a dehumidifier with an enthalpy of 21.6 Btu/lbm of dry air and 1100 Btu/lbm of water vapor. There is 0.02 lbm of vapor per pound of dry air at entrance and 0.009 lbm of vapor per pound of dry air at exit. The dry air at exit has an enthalpy of 13.2…