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Mkey [24]
3 years ago
10

How pine are processed ????

Engineering
1 answer:
Katyanochek1 [597]3 years ago
6 0

Answer:

The in-shell pine nuts enter a long rotating cylinder where the shells are crushed between two cylinders (2). The product is then sieved/sorted to spate the shells from the nuts, leaving the nuts ready for further processing. Once the shelling process is complete, the pine nuts are then dried.

Explanation:

hope it helps:)

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primitive transportation and storage systems that make local distribution ineffective if not impossible, the lack of clean water
Vera_Pavlovna [14]

Primitive transportation and storage systems that make local distribution ineffective if not impossible, and the lack of clean water and the lack of effective sewer systems are all examples of the barrier called physical & environmental barriers.

<h3>What are the problems with having physical & environmental barriers?</h3>

Time, Place, Space, Climate, and Noise are the key environmental/physical constraints. Some are simple to change, while others may prove to be difficult.

Physical barriers are essentially defined by three primary factors: environment, distance, and medium unawareness. Environmental barriers, on the other hand, are connected to variables that occur in the current environment.

Learn more about transportation:
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5 0
1 year ago
Carbon dioxide (CO2) is compressed in a piston-cylinder assembly from p1 = 0.7 bar, T1 = 320 K to p2 = 11 bar. The initial volum
tekilochka [14]

Answer:

W_{12}=-53.9056KJ

Part A:

Q=-7.03734 KJ/Kg (-ve sign shows heat is getting out)

Part B:

Q=1.5265KJ/Kg (Heat getting in)

The value of Q at constant specific heat is approximately 361% in difference with variable specific heat and at constant specific heat Q has opposite direction (going in) than Q which is calculated in Part B from table A-23. So taking constant specific heat is not a good idea and is questionable.

Explanation:

Assumptions:

  1. Gas is ideal
  2. System is closed system.
  3. K.E and P.E is neglected
  4. Process is polytropic

Since Process is polytropic so  W_{12} =\frac{P_{2}V_{2}-P_{1}V_{1}}{1-n}

Where n=1.25

Since Process is polytropic :

\frac{V_{2}}{V_{1}}=(\frac{P_{1}}{P_{2}})^{\frac{1}{1.25}} \\V_{2}= (\frac{P_{1}}{P_{2}})^{\frac{1}{1.25}} *V_{1}

V_{2}= (\frac{0.7}{11})^{\frac{1}{1.25}} *0.262\\V_{2}=0.028924 m^3

Now,W_{12} =\frac{P_{2}V_{2}-P_{1}V_{1}}{1-n}

W_{12} =\frac{11*0.028924-0.7*0.262}{1-1.25}(\frac{10^{5}N/m^2}{1 bar})(\frac{1  KJ}{10^{3}Nm})

W_{12}=-53.9056KJ

We will now calculate mass (m) and Temperature T_2.

m=\frac{P_{1}V_{1}}{RT_{1}}\\ m=\frac{0.7*0.262}{\frac{8.314KJ}{44.01Kg.K}*320}(\frac{10^{5}N/m^2}{1 bar})(\frac{1  KJ}{10^{3}Nm})\\m=0.30338Kg

T_{2} =\frac{P_{2}V_{2}}{Rm}\\ m=\frac{11*0.028924}{\frac{8.314KJ}{44.01Kg.K}*0.30338}(\frac{10^{5}N/m^2}{1 bar})(\frac{1  KJ}{10^{3}Nm})\\T_{2} =555.14K

Part A:

According to energy balance::

Q=mc_{v}(T_{2}-T_{1})+W_{12}

From A-20, C_v for Carbon dioxide at 300 K is 0.657 KJ/Kg.k

Q=0.30338*0.657(555.14-320)+(-53.9056)

Q=-7.03734 KJ/Kg (-ve sign shows heat is getting out)

Part B:

From Table A-23:

u_{1} at 320K = 7526 KJ/Kg

u_{2} at 555.14K = 15567.292 (By interpolation)

Q=m(\frac{u(T_{2})-u(T_{1})}{M} )+W_{12}

Q=0.30338(\frac{15567.292-7526}{44.01} )+(-53.9056)

Q=1.5265KJ/Kg (Heat getting in)

The value of Q at constant specific heat is approximately 361% in difference with variable specific heat and at constant specific heat Q has opposite direction (going in) than Q which is calculated in Part B from table A-23. So taking constant specific heat is not a good idea and is questionable.

7 0
4 years ago
Technician A says that a lack of lubrication on the back of the disc brake pads can cause brake noise. Technician B says that pa
sweet-ann [11.9K]

Answer:

Technician A and B both are correct.

Explanation:

According to Technician A, we can stop noise by applying lubricant (Break friction).

According to Technician A, we can stop noise by set-up right position for break pad.

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3 years ago
A mass of 5 kg of saturated liquid-vapor mixture of water is contained in a piston-cylinder device at 125 kPa. Initially, 2 kg o
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Answer:

See attached pictures.

Explanation:

See attached pictures for detailed explanation.

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4 years ago
Describe the historical development of building material being used in the construction indsury
scZoUnD [109]

Answer:

Construction, the techniques and industry involved in the assembly and ... Early building materials were perishable, such as leaves, branches, and animal hides. ... The well-developed masonry technology of Mesopotamia was used to build large ... although its precise description is unknown; the concealed faces of stones

Explanation:

4 0
3 years ago
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