In: Mechanical Engineering
Consider an ideal gas-turbine cycle with two stages of compression and two stages of expansion. The pressure ratio across each stage of the compressor and turbine is 3. The air enters each stage of the compressor at 300 K and each stage of the turbine at 1200 K. Use variable specific heats. Assuming an efficiency of 86 percent for each compressor stage and an efficiency of 90 percent for each turbine stage. (a) no regenerator is used rbw=rbw= % (Round one decimal place) ηth=ηth= % (Round one decimal place) and (b) a regenerator with 75 percent effectiveness is used. rbw=rbw= % (Round one decimal place) ηth=ηth= % (Round one decimal place) |