Determine the work input and entropy generation during the compression of steam from 100 kPa to 1 MPa in an adiabatic compressor if the inlet state is saturated vapor and the isentropic efficiency is 85 percent.

The value of work input to the compressor = 1505.7

The value of entropy generation inside the compressor

Explanation:

Initial pressure = 100 k pa

Final pressure = 1 M pa = 1000 k pa

At initial pressure = 100 k pa the steam is saturated vapour. From the steam tables the value of volume at this state is = 1.673

Thus the work input to the compressor =

⇒ =  ( - )

⇒ = 1.673 ( 1000 - 100 )

⇒ = 1505.7

The isentropic efficiency is  = 85 %

So the work input to the compressor =

⇒ =  1771.42

This is the value of work input to the compressor.

This is the value of entropy generation inside the compressor.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia