Problem: A steam power plant operates with one stage of reheat Rankine cycle and is executed with steam expanding initially from 2000 psia and 757°F. The reheater pressures of 900 psia, and the steam leaves each reheater at 757°F. The exhaust pressure is 5 psia. For 10.2 Ib/sec of steam flow, determine (a) the capacity of the power plant in kW, (b) the cycle thermal efficiency in %, (c) the engine thermal efficiency in %, (d) the ideal cycle steam rate in Ib/HP-hr, (e) the capacity of the cooling water pump in the condenser if the temperature rise is 36°F in GPM.

Problem: A steam power plant operates with one stage of reheat Rankine cycle and is executed with steam expanding initially from 2000 psia and 757°F. The reheater pressures of 900 psia, and the steam leaves each reheater at 757°F. The exhaust pressure is 5 psia. For 10.2 Ib/sec of steam flow, determine (a) the capacity of the power plant in kW, (b) the cycle thermal efficiency in %, (c) the engine thermal efficiency in %, (d) the ideal cycle steam rate in Ib/HP-hr, (e) the capacity of the cooling water pump in the condenser if the temperature rise is 36°F in GPM.

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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Concept explainers

Properties of Pure Substances

A substance with fixed chemical composition throughout is called a pure substance like water, air, and nitrogen. A pure substance does not have to be a single element or compound. A mixture of two or more phases of a pure substance is also a pure substance as long as the chemical composition is the same for all phases. These substances mainly have a constant/ uniform composition. The substances also have fixed boiling and melting points. A pure substance takes part in a chemical reaction to form predictable products.

Question

Topic: Review of steam cycles

Completely solve (a) to (e).

Use the ff. conversion:
1 HP = 42.4 Btu/min
1 HP = 0.746 kW
1 Btu = 778 ft-lb
Problem: A steam power plant operates with one stage of reheat
Rankine cycle and is executed with steam expanding initially from
2000 psia and 757°F. The reheater pressures of 900 psia, and the steam
leaves each reheater at 757°F. The exhaust pressure is 5 psia. For 10.2
Ib/sec of steam flow, determine (a) the capacity of the power plant
in kW, (b) the cycle thermal efficiency in %, (c) the engine thermal
efficiency in %, (d) the ideal cycle steam rate in Ib/HP-hr, (e) the
capacity of the cooling water pump in the condenser if the
temperature rise is 36°F in GPM.

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