As shown in the figure, a tank fitted with an electrical resistor of negligible mass holds 2 kg of nitrogen (N₂), initially at 27°C, 0.1 MPa. Over a period of 20 minutes, electric power of 0.28 kW is provided to the resistor. During this same period, a heat transfer of magnitude 10.5 kJ occurs from the nitrogen to its surroundings. Assume ideal gas behavior, but do not assume constant specific heats. Step 1 Determine the final temperature, in °C, and the final pressure, in MPa. Determine the final temperature, in °C. T₂= i Save for Later Nitrogen, N₂ m = 2 kg T₁ = 27°C P₁ = 0.1 MPa °℃ Qout, 12 = 10.5 kJ É electric Attempts: 0 of 5 used Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above. Submit Answer

As shown in the figure, a tank fitted with an electrical resistor of negligible mass holds 2 kg of nitrogen (N₂), initially at 27°C, 0.1 MPa. Over a period of 20 minutes, electric power of 0.28 kW is provided to the resistor. During this same period, a heat transfer of magnitude 10.5 kJ occurs from the nitrogen to its surroundings. Assume ideal gas behavior, but do not assume constant specific heats. Step 1 Determine the final temperature, in °C, and the final pressure, in MPa. Determine the final temperature, in °C. T₂= i Save for Later Nitrogen, N₂ m = 2 kg T₁ = 27°C P₁ = 0.1 MPa °℃ Qout, 12 = 10.5 kJ É electric Attempts: 0 of 5 used Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above. Submit Answer

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

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As shown in the figure, a tank fitted with an electrical resistor of negligible mass holds 2 kg of nitrogen (N₂), initially at 27°C, 0.1 MPa.
Over a period of 20 minutes, electric power of 0.28 kW is provided to the resistor. During this same period, a heat transfer of
magnitude 10.5 kJ occurs from the nitrogen to its surroundings. Assume ideal gas behavior, but do not assume constant specific heats.
Step 1
Determine the final temperature, in °C, and the final pressure, in MPa.
Determine the final temperature, in °C.
T₂= i
Save for Later
Nitrogen, N₂
m = 2 kg
T₁ = 27°C
P₁ = 0.1 MPa
°℃
Qout, 12 = 10.5 kJ
É electric
Attempts: 0 of 5 used
Step 2
The parts of this question must be completed in order. This part will be available when you complete the part above.
Submit Answer

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