1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
serg [7]
3 years ago
7

An air compressor compresses 15 L/s of air at 120 kPa and 20°C to 800 kPa and 300°C while consuming 6.2 kW of power. How much of

this power is being used to increase the pressure of the air versus the power needed to move the fluid through the compressor?
Physics
1 answer:
Nuetrik [128]3 years ago
6 0

Gas constant R = 0.287 kPa.m^3/kg.K

Specific volume of the air at the compressor inlet is:

v_1=\frac{RT_1}{P_1}\\ v_1=\frac{0.287\times 293}{120} =0.7008 m^3/kg

The air mass flow rate:

\dot m=\frac{\dot V_1}{v_1}\\ \dot m = \frac{15\times 10^{-3}}{0.7008} = 0.0214 kg/s

The flow work:

\dot W_{flow}=\dot m R(T_2-T_1)\\ \dot W = 0.0214\times 0.287 \times 280=1.72 kW

Power used to increase the air pressure:

\dot W_p=\dot W_{in}-\dot W_{flow}=6.2-1.72 =4.48 kW

You might be interested in
Fill in the blank: In the Northern Hemisphere, June 21 has ______________ than December 21.
Pavel [41]
Answer: I believe is A

Explanation: days are shorter in the winter
3 0
3 years ago
What makes a funnel appear black
fredd [130]

Answer:

Air

Explanation:

The mixing of cooler air in the lower troposphere with air flowing in a different direction in the middle troposphere causes the rotation on a horizontal axis, which, when deflected and tightened vertically by convective updrafts, forms a vertical rotation that can cause condensation to form a funnel cloud.

6 0
3 years ago
Place least complex to most complex:
Reika [66]
Cell, tissue, organ, organ sytem, organism, population, community, ecosystem, biome. 
7 0
3 years ago
Explain how do winds cause surface currents?
igor_vitrenko [27]

Answer:

As wind or an ocean current moves, the Earth spins underneath it. ... The Coriolis effect bends the direction of surface currents to the right in the Northern Hemisphere and left in the Southern Hemisphere.

Explanation:

The Coriolis effect causes winds and currents to form circular patterns.

8 0
3 years ago
For a cylindrical capacitor, the capacitance does not depend on which of the following values?
IgorC [24]

Answer:

Capacitance of cylindrical capacitor does not depends on the amount of charge on the conductors

Explanation:

Consider a cylindrical capacitor of length L, inner radius R₁ and outer radius R₂, permitivity ε₀ constant then capacitance of cylindrical capacitor is given by:

C=\frac{2\pi \epsilon_{o}L}{ln\frac{R_{2} }{R_{1}} }

From this equation it is clear that capacitance of cylindrical capacitor is independent of the amount of charge on the conductors where as directly  proportional permitivity constant and length of cylinder where as inversely proportional to natural log of ratio of  R₂ and R₁

5 0
3 years ago
Other questions:
  • An object moves in a straight line and is speeding up. Which one of the following statements is true?
    11·1 answer
  • Two or more velocities add by
    11·1 answer
  • What is domain theory? How does it explain how an electromagnet become magnetic
    8·1 answer
  • What would be the result if Earth's unique atmosphere did not exist?
    10·2 answers
  • Problem
    6·1 answer
  • U. A hockey player takes a slap shot at a puck at rest on
    14·1 answer
  • Match the term to the correct description.
    6·1 answer
  • The correct sequence of layers of the atmosphere from innermost to outermost is
    7·1 answer
  • Which statement correctly describes these electric field lines?
    6·1 answer
  • HELLO I NEED YOU HELP WITH THIS SCIENCE QUESTION NO LINKS!!!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!