gas-turbine power plant operating on an ideal Brayton cycle has a pressure ratio of 8. The gas temperature is 300 K at the compressor inlet and 1300 K at the turbine inlet. Utilizing the air-standard assumptions. 1. determine the internal efficiency with an ideal regenerator of an effectiveness of 100%. 2. compare this efficiency to that given in equation 9-25 3. determine the energy savings with using the ideal regenerator

An ideal Rankine cycle operates between the pressure limits of 6 bar and 0.1 bar with steam as the working fluid (data above).  Saturated water leaves the condenser and the turbine inlet temperature is 250°C. You may assume that the work input to the boiler feed water pump is negligible.  Estimate the efficiency of the cycle and determine the turbine power in kJ/kg.

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Consider the operation of the ideal Brayton cycle with a regenerator. The maximum temperature in the cycle is set.  What happens with increasing pressure ratio? Group of answer choices The amount of heat added in the cycle up to a point will decrease with net work output remaining the same and thermal efficiency will increase. Thermal efficiency will increase Compressor exit temperature will increase with turbine exit temperature remaining the same. When the two temperatures are equal, the benefit of the regenerator will be zero. Thermal efficiency will decrease