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What is specific heat transfer in kJ/kg from the system to the surrounding in the process? .

What is specific heat transfer in kJ/kg from the system to the surrounding in the process? .

Elements Of Electromagnetics
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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A piston-cylinder device (see Figure 1) is in a heated environment (its surroundings), which is at a temperature of 177°C and able to transfer heat to the device. The device contains 2 kg of water which is initially at 101.42 kPa with the quality (dryness fraction) of 0.4. Heat is added to the water from the surroundings, and the water expands isothermally in a quasi-equilibrium manner until the final volume is 4.017 m3. During the expansion process, the specific work done is 171.4 kJ/kg. It can be assumed that the piston and cylinder is weightless, and that kinetic and potential energy changes are negligible. In answering the various questions, you should choose the closest answer which may be slightly different from your own answer because of rounding errors or differences . Surroundings (at temperature of 177° C) Water: Initially at 101.42 kPa and x=0.4 Cylinder Figure 1 What is specific heat transfer in kJ/kg from the system to the surrounding in the process? . a. 712.37, negative b. 1424.74, negative c. 1424.74, positive d. 712.37, positive a .- n - os
Transcribed Image Text:A piston-cylinder device (see Figure 1) is in a heated environment (its surroundings), which is at a temperature of 177°C and able to transfer heat to the device. The device contains 2 kg of water which is initially at 101.42 kPa with the quality (dryness fraction) of 0.4. Heat is added to the water from the surroundings, and the water expands isothermally in a quasi-equilibrium manner until the final volume is 4.017 m3. During the expansion process, the specific work done is 171.4 kJ/kg. It can be assumed that the piston and cylinder is weightless, and that kinetic and potential energy changes are negligible. In answering the various questions, you should choose the closest answer which may be slightly different from your own answer because of rounding errors or differences . Surroundings (at temperature of 177° C) Water: Initially at 101.42 kPa and x=0.4 Cylinder Figure 1 What is specific heat transfer in kJ/kg from the system to the surrounding in the process? . a. 712.37, negative b. 1424.74, negative c. 1424.74, positive d. 712.37, positive a .- n - os
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