Aproposal is to build a 1000-mw electric power plant with steam as the working fluid. the condensers are to be cooled with river water. the maximum steam temperature is 550 celsius, and the pressure in the condensers will be 10 kpa. the river is 60 m wide and 8 m deep, and flows at a velocity of 10 m/min. estimate the temperature rise of the river downstream from the power plant.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater

The filament of an incandescent lamp has a temperature of 2000k. calculate the fraction of radiation emitted in the visible light band if the filament is approximated as blackbody