Revisit Example 6 from your Module 4 notes. Consider the well-insulated, rigid tank having a volume of 10 [ft']. Previously, it contained saturated water vapor at 212°F at state 1. The water was rapidly stirred until the pressure was 20 [Ibfin'j. In class we showed that the temperature at state 2 was 445°F and the work done during this process was -31.3 [Btu]. Now, if insulation were removed from the tank, and the water is cooled at constant volume from T: = 445°F to T3= 300°F without stirring the water, determine: a) The pressure at the state 3 in (Ibfin), and b) The heat transfer during the process in [Btu].

Revisit Example 6 from your Module 4 notes. Consider the well-insulated, rigid tank having a volume of 10 [ft']. Previously, it contained saturated water vapor at 212°F at state 1. The water was rapidly stirred until the pressure was 20 [Ibfin'j. In class we showed that the temperature at state 2 was 445°F and the work done during this process was -31.3 [Btu]. Now, if insulation were removed from the tank, and the water is cooled at constant volume from T: = 445°F to T3= 300°F without stirring the water, determine: a) The pressure at the state 3 in (Ibfin), and b) The heat transfer during the process in [Btu].

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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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

Revisit Example 6 from your Module 4 notes. Consider the well-insulated, rigid tank having a
volume of 10 [ft']. Previously, it contained saturated water vapor at 212°F at state 1. The water
was rapidly stirred until the pressure was 20 [lbfin'). In class we showed that the temperature at
state 2 was 445°F and the work done during this process was -31.3 (Btu].
Now, if insulation were removed from the tank, and the water is cooled at constant volume from
T2 = 445°F to T3= 300°F without stirring the water, determine:
a) The pressure at the state 3 in [Ibfin*), and
b) The heat transfer during the process in [Btu).

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