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alexdok [17]
2 years ago
8

What is the purpose of having a ventilation system on board a motorized vessel?.

Engineering
1 answer:
chubhunter [2.5K]2 years ago
4 0

The purpose of having a ventilation system on board a motorized vessel is : To remove flammable gas from a vessel to avoid explosions.

<h3>Meaning of ventilation system</h3>

A ventilation system can be defined as a system that allows for removal of gases from a vessel to the atmosphere.

A Ventilation system is very important in every motorized vessel because they help to eliminate or remove flammable gases that are dangerous and are liable to explode when held in a large amount in the engine.

In conclusion, The purpose of having a ventilation system on board a motorized vessel is to remove flammable gas from a vessel their by avoiding explosions.

Learn more about Ventilation System: brainly.com/question/1687520

#SPJ4

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Scissors used in the home cut material by concentrating forces that ultimately produce a certain type of stress within the mater
Vesnalui [34]

Answer:

The correct option is: (b) Shearing stress

Explanation:

The shear stress is described as the force that results in the deformation of an object or substance. It originates from the vector of the force component that is parallel to area of cross section of the object or substance.

The paired shear forces that produces shear stress, act equally on the opposite sides of the given object.

<u>In the given example, the stress produced when using scissors for cutting, is known as the shear stress.</u>

6 0
3 years ago
Refrigerant 134a at p1 = 30 lbf/in2, T1 = 40oF enters a compressor operating at steady state with a mass flow rate of 200 lb/h a
Mazyrski [523]

Answer:

a) \mathbf{Q_c = -3730.8684 \ Btu/hr}

b) \mathbf{\sigma _c = 4.3067 \ Btu/hr ^0R}

Explanation:

From the properties of Super-heated Refrigerant 134a Vapor at T_1 = 40^0 F, P_1 = 30  \ lbf/in^2 ; we obtain the following properties for specific enthalpy and specific entropy.

So; specific enthalpy h_1 = 109.12 \ Btu/lb

specific entropy s_1 = 0.2315 \ Btu/lb.^0R

Also; from the properties of saturated Refrigerant 134 a vapor (liquid - vapor). pressure table at P_2 = 160 \ lbf/in^2 ; we obtain the following properties:

h_2  = 115.91 \ Btu/lb\\\\ s_2 = 0.2157 \ Btu/lb.^0R

Given that the power input to the compressor is 2 hp;

Then converting to  Btu/hr ;we known that since 1 hp = 2544.4342 Btu/hr

2 hp = 2 × 2544.4342 Btu/hr

2 hp = 5088.8684 Btu/hr

The steady state energy for a compressor can be expressed by the formula:

0 = Q_c -W_c+m((h_1-h_e) + \dfrac{v_i^2-v_e^2}{2}+g(\bar \omega_i - \bar \omega_e)

By neglecting kinetic and potential energy effects; we have:

0 = Q_c -W_c+m(h_1-h_2) \\ \\ Q_c = -W_c+m(h_2-h_1)

Q_c = -5088.8684 \ Btu/hr +200 \ lb/hr( 115.91 -109.12) Btu/lb  \\ \\

\mathbf{Q_c = -3730.8684 \ Btu/hr}

b)  To determine the entropy generation; we employ the formula:

\dfrac{dS}{dt} =\dfrac{Qc}{T}+ m( s_1 -s_2) + \sigma _c

In a steady state condition \dfrac{dS}{dt} =0

Hence;

0=\dfrac{Qc}{T}+ m( s_1 -s_2) + \sigma _c

\sigma _c = m( s_1 -s_2)  - \dfrac{Qc}{T}

\sigma _c = [200 \ lb/hr (0.2157 -0.2315) \ Btu/lb .^0R  - \dfrac{(-3730.8684 \ Btu/hr)}{(40^0 + 459.67^0)^0R}]

\sigma _c = [(-3.16 ) \ Btu/hr .^0R  + (7.4667 ) Btu/hr ^0R}]

\mathbf{\sigma _c = 4.3067 \ Btu/hr ^0R}

5 0
3 years ago
How did the universe begin
stepan [7]

Answer:

big bang

Explanation:

the universe began from big bang

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3 years ago
. What are the benefits of synthetic motor oil compared to conventional oil?
madam [21]

Explanation:

the answet is E. all of the above

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3 years ago
Which professional draws maps and plans for projects involving structures other than buildings, such as bridges?
kolbaska11 [484]

Answer:

I believe it is a civil drafter

Explanation:

O*NET site

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