4. A quantity of water is admitted from a water main into an evacuated 60 L adiabatic vessel (see Figure). The water in the main is maintained at 20 MPa and 300°C. Subsequently superheated steam at 7 MPa and 850°C is admitted into the vessel from a second main until finally the vessel contains dry saturated steam at 7.0 MPa. a. Find the mass of steam that enters the vessel from the second main. b. Find the pressure in the vessel before the steam was admitted. Main 1 Vessel Main 2

4. A quantity of water is admitted from a water main into an evacuated 60 L adiabatic vessel (see Figure). The water in the main is maintained at 20 MPa and 300°C. Subsequently superheated steam at 7 MPa and 850°C is admitted into the vessel from a second main until finally the vessel contains dry saturated steam at 7.0 MPa. a. Find the mass of steam that enters the vessel from the second main. b. Find the pressure in the vessel before the steam was admitted. Main 1 Vessel Main 2

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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Solve the following problem and show your complete solutions. explain your answer for better understanding

4.
A quantity of water is admitted from a water main into an evacuated 60 L adiabatic vessel
(see Figure). The water in the main is maintained at 20 MPa and 300°C. Subsequently
superheated steam at 7 MPa and 850°C is admitted into the vessel from a second main until
finally the vessel contains dry saturated steam at 7.0 MPa.
a. Find the mass of steam that enters the vessel from the second main.
b. Find the pressure in the vessel before the steam was admitted.
Main 1
Vessel
Main 2

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Step 1: Calculate the mass of steam that enters the vessel from the second main.

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Step 2: Calculate the change in specific enthalpy of the water.

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Step 3: Calculate the pressure in the vessel before the steam was admitted.

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Learning Goal: To calculate the maximum allowable stresses in pressure vessels, compute the minimum allowable thickness of pressure vessels to meet certain constraints, and observe and compare properties of different pressure vessel shapes. Engineers are considering two possible vessel shapes for storing fuel. One shape is cylindrical and the other is spherical. Each vessel would be constructed out of the same material such that its hoop stresses and longitudinal stresses would be no greater than 120 MPa. The cylindrical pressure vessel has an inside diameter of de = 800 mm and a thickness of te = 25.0 mm. The spherical pressure vessel has an inside diameter of ds = 650 mm and a thickness of t = 11.0 mm. ▼ Part A - Maximum allowable pressure in the cylindrical pressure vessel Determine the maximum allowable pressure, pc,max, in the cylindrical pressure vessel. Express your answer in N to three significant figures. ► View Available Hint(s) Pc,max = Submit ΟΙ ΑΣΦ ↑ vec Previous Answers…
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