This cycle is the same as the Carnot engine except that thedirection along each

Question

This cycle is the same as the Carnot engine except that thedirection along each path is reversed. Paths A and Care adiabatic (Q = 0), and paths B and D are isothermal (?T =0). Consider the working

substance of this refrigerator to be an ideal gas.

Is the work done on the gas along path B positive, negative,or zero?

Is the change in internal energy of the gas along pathC positive, negative, or zero?

Is the heat put into the gas along path D positive, negative,or

zero?

Is the change in internal energy the gas along path Dpositive,

negative, or zero?

Is the net work done on the gas during the entire cyclepositive,

negative, or zero?

Is the net change in internal energy of the gas during theentire

cycle positive, negative, or zero?

Explanation / Answer

( 1). work done on the gas along path B is positive
Since work is done by the system (B). the change ininternal energy of the gas along path C is positive Since internalenergy is increases (C). the heatput into the gas along path D negative
Since heat emitted from the system to surroundings (D). the changein internal energy the gas along path D zero
Since D is a isothermal process (E). the network done on the gas during the entire cycle is positive
Since the cycle contain certain area (F). the netchange in internal energy of the gas during theentire cycle zero
Since intial and final states are same

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---