This question requires the use of the Thermodynamic Property Tables supplied as additional material. A saturated mixture of 2 kg of liquid water and 0.7 kg of steam is heated at a constant pressure of 40 bar until its temperature reaches 300 oC. • (i) Evaluate the temperature and the dryness fraction at the start of the process. (ii) Given that the heat transfer to a system during a constant pressure process is equal to the increase in enthalpy of the system, calculate the heat transfer to the system in the process described above. • (iii) Finally, the system undergoes an isentropic process such that it finishes as a saturated liquid.

This question requires the use of the Thermodynamic Property Tables supplied as additional material. A saturated mixture of 2 kg of liquid water and 0.7 kg of steam is heated at a constant pressure of 40 bar until its temperature reaches 300 oC. • (i) Evaluate the temperature and the dryness fraction at the start of the process. (ii) Given that the heat transfer to a system during a constant pressure process is equal to the increase in enthalpy of the system, calculate the heat transfer to the system in the process described above. • (iii) Finally, the system undergoes an isentropic process such that it finishes as a saturated liquid.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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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.

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Step 1: Write the given data with suitable variables.

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Step 2: (a)- Find the temperature and dryness fraction.

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Step 3: (b)-Find the heat transfer.

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Step 4: C-Determine the final temperature.

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