Engineering, 29.01.2020 05:46 mariaaking1413
Asteam power plant operates on an ideal rankine cycle with two stages of reheat and has a net power output of 120 mw. steam enters all three stages of the turbine at 500°c. the maximum pressure in the cycle is 15 mpa, and the minimum pressure is 5 kpa. steam is reheated at 5 mpa the first time and at 1 mpa the second time. show the cycle on a t-s diagram with respect to saturation lines, and determine (a) the thermal efficiency of the cycle and (b) the mass flow rate of the steam.
Answers: 3
Engineering, 04.07.2019 18:10
Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?
Answers: 2
Engineering, 04.07.2019 18:10
A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.
Answers: 2
Engineering, 04.07.2019 19:10
Starting wih an energy balance on a rectangular volume element, derive the one- dimensional transient heat conduction equation for a plane wall with constant thermal conductivity and no heat generation.
Answers: 1
Engineering, 04.07.2019 19:10
Arigid tank contains 10 kg of air at 137 kpa (abs) and 21°c. more air is added to the tank until the pressure and temperature rise to 242 kpa (abs) and 32°c, respectively. determine the amount of air added to the tank. [r-0.287 kj/kg k]
Answers: 3
Asteam power plant operates on an ideal rankine cycle with two stages of reheat and has a net power...
Physics, 17.12.2019 18:31
Computers and Technology, 17.12.2019 18:31
Mathematics, 17.12.2019 18:31
Chemistry, 17.12.2019 18:31
Biology, 17.12.2019 18:31
Mathematics, 17.12.2019 18:31
History, 17.12.2019 18:31
History, 17.12.2019 18:31
History, 17.12.2019 18:31
Social Studies, 17.12.2019 18:31
Mathematics, 17.12.2019 18:31
Mathematics, 17.12.2019 18:31