Consider a simple Brayton/gas cycle using air as the working fluid; has a pressure ratio of 12; has a maximum cycle temperature of 600 degrees C; and operates the compressor inlet at 90 kPa and 15 degrees C. Compressor and turbine isentropic efficiency is 90 percent. Use Cp as 1.005 kJ/kg. K. Find net work done by this cycle, ignoring heat addition. Write your answer below.

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?

Plan an experiment to measure the surface tension of a liquid similar to water. if necessary, review the ncfmf video surface tension for ideas. which method would be most suitable for use in an undergraduate laboratory? what experimental precision could be expected?