Wnet Qin DO0000 Wnet Qout Qout The following description applies to Problem 3. The diagram above represents the thermodynamic cycle of a power plant that has a power output of 500 Megawatts (MW). The cycle parameters are: • Maximum cycle temperature (high temp reservoir): TH = 610 °C • Temperature of reservoir (river) to which heat is rejected: T, = 20 °C Power Output: vwnet = 500 MW 3. Consider a plant that produces power with an efficiency of 40 percent. This is rather typical of a coal fired power plant built with circa-1970 technology. Find the following quantities: MW a. The rate at which heat must be put into the cycle: Qin MW b. The rate at which waste heat is rejected to the river: Q.out

Wnet Qin DO0000 Wnet Qout Qout The following description applies to Problem 3. The diagram above represents the thermodynamic cycle of a power plant that has a power output of 500 Megawatts (MW). The cycle parameters are: • Maximum cycle temperature (high temp reservoir): TH = 610 °C • Temperature of reservoir (river) to which heat is rejected: T, = 20 °C Power Output: vwnet = 500 MW 3. Consider a plant that produces power with an efficiency of 40 percent. This is rather typical of a coal fired power plant built with circa-1970 technology. Find the following quantities: MW a. The rate at which heat must be put into the cycle: Qin MW b. The rate at which waste heat is rejected to the river: Q.out

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Problem 1. An engine produces work due to the heat transfer from a thermal reservoir at temperature Tres and rejecting energy to a thermal sink at temperature Tsink. The efficiency of such cycle is ε = 1 - (Tsink). Calculate the required uncertainty in the measurement of temperature to provide an Tres uncertainty in the cycle's efficiency of 3.5 %. Use Tres = 1250 K and Tsink = 300 K.
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