And it, um anyway, from this and the change in pressure going from 20 K. Well, that would that would technically always be one now. Consider the simplified system shown in Figure 1, taken from an actual plant. Calvin, you can get the specific specific weight, Uh, specifically specific mass specific volume specific mass. 10-96 Consider a steam power plant that operates on a regenerative Rankine cycle and has a net power output of 150. Yeah, so we have then that we're going to get 81 because it's saturated. Why did I I guess we don't really need t one. The isentropic efficiency of the turbine is 80 percent, and that of the pump is 95 percent. The isentropic efficiencies of the turbine and the pump are 85 percent and 90.
Steam is then reheated at constant pressure to 450C before it expands in the low-pressure turbine. Steam enters the high-pressure turbine at 12.5 MPa and 550C at a rate of 7.7 kg/s and leaves at 2 MPa. If the isentropic efficiency of the turbine is 87 percent and the isentropic efficiency of the pump is 85 percent, determine (a) the thermal efficiency of the cycle and (b) the net power output of the plant for a mass flow rate of 15 kg/s. Steam leaves the condenser as a saturated liquid at a pressure of 10 kPa. A steam power plant operates on the reheat Rankine cycle. EXAMPLE 102 An Actual Steam Power Cycle A steam power plant operates on the cycle shown in Fig. Steam enters the high-pressure turbine at 10 MPa and 500C and the low-pressure turbine at 1 MPa and 500C. And so then we have ice and tropic, um, turbine and pop. Consider a steam power plant that operates on a reheat Rankine cycle. Quality at the exit of the turban is 90 96% uh, both of these are 96%. Thomas Savery is considered the inventor of the first commercially used steam powered device, a steam pump that used steam pressure operating directly on the. Water leaves the feedwater heater as a saturated liquid. Steam is extracted from the turbineat 0.4 MPa to heat the feedwater in an open feedwater heater. Steam enters the turbine at 6 MPa and 450 C and is condensed in the condenser at 20 kPa. Mega pascal's, uh, heat section at, um see here the reheat section here, Down at that, This down here at, uh, 1.2 mega past. A steam power plant operates on an ideal regenerative Rankine cycle. So in this case, we have an ideal ranking.
0 kommentar(er)
