Chapter 8, Problem 8.48P

6. A Reversed Carnot Cycle rejects 833 BTU/lb as heat at a temperature of 1140F. The cycle receives heat at a temperature of 140F. Calculate: a. The change of entropy for the heat rejection process, BTU/lb-R b. The net cycle work in BTU/lb

Air is used as the working fluid in a turbine. At the inlet, the air is at 1100 K, 1050 kPa. It is flowing at a rate of 10 kg/s, having a velocity of 30 m/s. At the outlet, the air is 500 K, 98.61 kPa, and flowing at 45 m/s. Assuming that the specific heat of the air is constant (at the average temperature) during the process, what is the power output of the turbine in MW? MW (CC) BY-NO-SA Niel Crews, 2013

SU-2 A gas at 500K is in a cylinder with a frictionless piston. The gas goes thru a reversible cycle during which it absorbs 400J from a reservoir at 500K. During part of the cycle the gas rejects heat Q to a reseroir at 300K. Let the system be defined as the gas. a) What is the change in entropy for the system for one cycle of operation of the engine? Briefly explain your answer. b) Find the change in entropy for the universe for one cycle of operation of the engine. Briefly explain your answer. c) Find the change in entropy for the surroundings for one cycle of operation of the engine. Briefly explain your answer. d) Use your results from the previous parts to find how many joules of heat were rejected to the 300K reservoir during this process.

find the specific enthalphy at each point of the cycle, the amount of heat added, heat rejected, turbine work, pump work, net work and thermal efficiency in a carnot cycle between pressure limits of 3MPa and 10KPa

Hint, find enthalpy, entropy at each state

Provide the given, manula step by step solution, and diagram for below problem.  The efficiency of Carnot cycle operating at minimum temperature of60 degree Fahrenheit is 80%. Find the maximum temperature of the cycle.

A turboprop engine consist of a diffuser, compresser, combaster, turbine and nozzle. the turbine druves a propeller as well as the compressor. air enters the diffuser with a volumetric flow rate of 83.7m3 /s at 40KPa, 240K and a velocity of 180m/s, and decelerate essentially to zero velocity.the compressor ratio is 10 and the compressor has an isentropic efficiency is 85%.the tuebine inlet temperature id 1140K, and it's isentropic efficiency is 85%. the turbine exit pressure is 50kPa. flow through the diffuser and the nozzle is isentropic. sketch the process on the T-s diagram and using an air standard analysis, determine  i. the power delivered to the propeller, in MW ii. the velocity at the nozzle exit, in m/s

How did Sadi Carnot theorize to improve the 3% efficiency of early steam engine during his time?

2. An adiabatic steam turbine that you choose above takes steam at 500 kPa and 330 °C and expands to 10 kPa. Find the dryness fraction, enthalpy change and isentropic efficiency of the plant using the conditions given if ideal enthalpy is 3645 kJ/kg.k.