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
Natalka [10]
3 years ago
13

Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 22oC and exits at 2.0

bar. The refrigerant undergoes a throttling process. Determine the temperature, in oC, and the quality of the refrigerant at the exit of the expansion valve.
Physics
1 answer:
KonstantinChe [14]3 years ago
6 0

Answer:

The  the quality of the refrigerant at the exit of the expansion valve is 0.179.

Explanation:

Given that,

Initial pressure = 10 bar

Temperature = 22°C

Final pressure = 2.0 bar

We using the value of h

h = 293.4\ kJ/kg

The refrigerant during expansion undergoes a throttling process

Therefore, h_{1}=h_{2}

We need to calculate the quality of the refrigerant at the exit of the expansion valve

At 2.0 bar,

The property of ammonia

h_{f}=47.8 kJ/kg

h_{g}=1417.7 kJ/kg

Using formula

h_{2}=h_{f}+x(h_{g}-h_{f})

Put the value into the formula

293.4 =47.8+x(1417.7-47.8)

x=\dfrac{293.4-47.8}{1417.7-47.8}

x=0.179

Hence, The  the quality of the refrigerant at the exit of the expansion valve is 0.179.

You might be interested in
A country would place a tariff on imported steel to
Whitepunk [10]
. . . 'protect' its domestic steel industry, by
increasing the price of imported steel.
7 0
3 years ago
Read 2 more answers
The maximum height a typical person can jump is about 60cm (0.6m). By how much does the gravitational potential energy increase
sasho [114]

The gravitational potential energy will increase by 423.36 J

<h3>How to determine the potential energy at ground level</h3>
  • Mass (m) = 72 kg
  • Acceleration due to gravity (g) = 9.8 m/s²
  • Height (h) = 0 m
  • Potential energy at ground level (PE₁) =?

PE = mgh

PE₁ = 72 × 9.8 × 0

PE₁ = 0 J

<h3>How to determine the potential energy at 60 cm (0.6 m)</h3>
  • Mass (m) = 72 kg
  • Acceleration due to gravity (g) = 9.8 m/s²
  • Height (h) = 0.6 m
  • Potential energy at 60 cm (0.6 m) (PE₂) =?

PE = mgh

PE₂ = 72 × 9.8 × 0.6

PE₂= 423.36 J

<h3>How to determine the change in potential energy </h3>
  • Potential energy at ground level (PE₁) = 0 J
  • Potential energy at 60 cm (0.6 m) (PE₂) = 423.36 J
  • Change in potential energy =?

Change in potential energy = PE₂ - PE₁

Change in potential energy = 423.36 - 0

Change in potential energy = 423.36 J

Learn more about energy:

brainly.com/question/10703928

#SPJ1

8 0
2 years ago
The Robinson projection map is considered very useful because
Vladimir79 [104]
Hello,
   The question states: <span>The Robinson projection map is considered very useful because...
The answer is \boxed{because \ most \ distances, \ sizes, \ and \ shapes \ are \ accurate.}

Hope this helped!

~FoodJunky
</span>
7 0
3 years ago
If it takes 100 N to move a box 5 meters, what is the work done on the box?
inysia [295]

Answer:

Explanation:

Work=force×distance

W=F×S

   =100 N × 5 m

   = 500 Nm

W = 500J

7 0
3 years ago
why do we not notice a difference in the fall and winter in the amount of oxygen in the air even when leaves fall off
sveticcg [70]
Earths tilt making the sun go haywire lol XD
6 0
3 years ago
Other questions:
  • When the current through an electromagnet ceases, what generally happens to the magnetic field?
    7·1 answer
  • Holding onto a tow rope moving parallel to a frictionless ski slope, a 70.1 kg skier is pulled up the slope, which is at an angl
    10·1 answer
  • An object has rotational inertia I. The object,initially at rest, begins to rotate with a constant angularacceleration of magnit
    6·1 answer
  • PLEASE PLEASE HELP AND PUT A REAL ANSWER ;-;. ALSO WILL GIVE BRAINLEST!!
    10·2 answers
  • If you rub a balloon on a sweater, which will have more electrons?
    13·1 answer
  • Which scenario did not include a chemical change?
    12·1 answer
  • 4. During which three months is the difference the same between average high temperature and average low temperature?
    15·1 answer
  • How much potential energy foes a 5kg mass have when its 2 meters above the ground?(Hint :PE=m*g*h)​
    11·1 answer
  • The depth of a pond is 1.5m. Calculate the pressure caused by the water at the bottom of the pond ?​?
    11·1 answer
  • What does the evidence in this passage suggest?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!