Steam is supplied to a two-stage turbine at 48 bar and 400 °C. It expands in the first turbine until it is just dry saturated, then it is re-heated to 400 °C and expanded through the second-stage turbine. The condenser pressure is 0.04 bar. High-P turbine Low-P turbine Reheater Boiler P= Ps=Prhen Condenser

Steam is supplied to a two-stage turbine at 48 bar and 400 °C. It expands in the first turbine until it is just dry saturated, then it is re-heated to 400 °C and expanded through the second-stage turbine. The condenser pressure is 0.04 bar. High-P turbine Low-P turbine Reheater Boiler P= Ps=Prhen Condenser

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter45: Domestic Refrigerators And Freezers

Section: Chapter Questions

Problem 13RQ: Condensers in these refrigerators are all_______cooled.

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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

What is the dryness fraction at state 6 to 3 d.p.

Steam is supplied to a two-stage turbine at 48 bar and 400 °c. It expands in the first
turbine until it is just dry saturated, then it is re-heated to 400 °C and expanded
through
the second-stage turbine. The condenser pressure is 0.04 bar.
High-P
turbine
Low-P
turbine
Reheater
Boiler
P=Ps=Prcheat
Condenser

Expert Solution

Step 1

Given:

$P_{3} = 48 b a r T_{3} = 400 ° C T_{5} = 400 ° C P_{6} = 0.04 b a r$

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