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
elena-s [515]
3 years ago
6

Steam at 320°C flows in a stainless steel pipe (k 5 15 W/m·K) whose inner and outer diameters are 5 cm and 5.5 cm, respectively.

The pipe is covered with 3-cm-thick glass wool insulation (k 5 0.038 W/m·K). Heat is lost to the surroundings at 5°C by natural convection and radiation, with a combined natural convection and radiation heat transfer coefficient of 15 W/m2 ·K. Taking the heat transfer coefficient inside the pipe to be 80 W/m2 ·K, determine the rate of heat loss from the steam per unit length of the pipe. Also determine the temperature drops across the pipe shell and the insulation.

Engineering
1 answer:
noname [10]3 years ago
4 0

Answer:

  1. determine the rate of heat loss from the steam per unit length of the pipe.  = 93.94w
  2. Also determine the temperature drops across the pipe shell and the insulation = 290.18°C

Explanation:

  1. determine the rate of heat loss from the steam per unit length of the pipe.  = 93.94w
  2. Also determine the temperature drops across the pipe shell and the insulation = 290.18°C

check the attached doc for proper explannation

You might be interested in
Fixed objects that fix a location are called
Zielflug [23.3K]
Fix3d locationz i thinkz
4 0
3 years ago
PLEASE HELP
Anna11 [10]
PLEASE HELP
NASA scientists have determined that the chance a single person would get hit by a piece of falling satellite is one in 3,200. What can you infer based on this probability?



A. Satellites that enter Earth’s atmosphere land mostly in the ocean.


B. NASA does a good job informing people of when satellites will enter the atmosphere.


C. Satellites that enter Earth’s atmosphere land mostly in unpopulated areas.


D. Much of a satellite is destroyed during the process of entering Earth’s atmosphere.
8 0
3 years ago
Read 2 more answers
What is the function of a fixed resistor?
agasfer [191]

Answer:

  add resistance to a circuit

Explanation:

It depends on the design in which it is incorporated. A fixed resistor has many uses, including, but not limited to ...

  • dropping voltage
  • limiting current
  • contributing to a time delay
  • adjusting frequency response
  • eliminating (or creating) signal reflections
  • acting as a fuse
  • calibrating or trimming a response
  • providing protection against electrical shock or ESD
  • acting as a reference when measuring variable resistors
8 0
4 years ago
The torque required to drive a 40 mm diameter power screw having double square threads with a pitch of 6 mm is 1.0 kN-m. The fri
myrzilka [38]

Answer:

This is self locking.

Explanation:

Given that

Diameter d= 40 mm

Pitch (P)= 6 mm

Torque T= 1 KN.m

Friction(μ) = 0.1

Thread is double square.

Condition for self locking

\mu >tan\theta

tan\theta=\dfrac{L} {\pi d}

L= n x P

N= number of start

Here given that double start so n=2

L=2 x 6 = 12 mm

tan\theta=\dfrac{L} {\pi d}

tan\theta=\dfrac{12} {\pi \times 40}

tan\theta=0.095            (μ = 0.1)

\mu >tan\theta

So from we can that this is self locking.

6 0
3 years ago
A shaft 70 mm in diameter is being pushed at a speed of 400 mm/s through a bearing sleeve 70.2 mm in diameter and 250 mm long. T
Allushta [10]

Answer:

F=989.6 N

Explanation:

Given that

Diameter of shaft = 70 mm

Diameter of bearing sleeve =70.2 mm

So clearance h=0.1 mm

Speed V= 400 mm/s

Length of shaft = 250 mm

\nu =0.005\ \frac{m^2}{s}\ , \rho=900\ \frac{kg}{m^3}

We know that

\mu =\rho\times\nu

μ= 900 x 0.005 Pa-s

μ= 4.5 Pa-s

As we know that

From Newton's law of viscosity ,the shear stress given as follows

\tau =\mu \dfrac{dU}{dy}

We also know that

Force = shear stress x area

Now by putting the values

\tau =4.5\times \dfrac{400}{0.1}

\tau=18,000 Pa

So force

F= 18,000 x π x 0.07 x 0.25

F=988.6 N

6 0
3 years ago
Other questions:
  • An art collector is bidding on a statue that would complete a collection he is trying to assemble. The statue is being sold in a
    9·1 answer
  • In a steam power plant, the temperature of the burning fuel is 1100 °C, and cooling water is available at 15 °C. Steam leaving t
    15·1 answer
  • Which sentence about the technology design process is true
    12·1 answer
  • Indicate whether the following statements are true or false for an isothermal process: (A) Q=T(∆S). (B) ∆U=0.(C) The entropy cha
    5·1 answer
  • A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30C by rejecting
    13·1 answer
  • A pipe leads from a storage tank on the roof of a building to the ground floor. The absolute pressure of the water in the storag
    7·1 answer
  • A. Calculate the concentration of a toxic (Cout) that is added to a lake with an input concentration of 100 μg/l. The flow rate
    10·1 answer
  • While he did not invent the assembly line, he did streamline his production line and was
    8·1 answer
  • Which of the following is an example of a tax
    8·2 answers
  • Define architecture and Civil engineering in brief ​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!