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3 years ago

It is acceptable to mix used absorbents.

Engineering

1 answer:

Monica [59]3 years ago

3 0

It is acceptable to mix used absorbents. This statement is False.

<h3>What are absorbents?</h3>

Absorbent is a material which soaks the liquid quickly.

The used absorbents should not be put into drains or ground. It may happen that non-hazardous material react with the hazardous waste by putting up used absorbent.

Mixing up will create hazardous effects in the environment and pollute it.

Thus, It is not acceptable to mix the used absorbents. The given statement is false.

Learn more about absorbents.

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3 years ago

A 450 MWt combined cycle plant has a Brayton cycle efficiency of 24% and a Rankine cycle efficiency of 29% with no heat augmenta

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Answer:

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$\eta _b=\eta _1+\eta _2-\eta _1\eta _2$

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4 years ago

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Answer:

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3 years ago

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A heated long cylindrical rod is placed in a cross flow of air at 20°C (1 atm) with velocity of 10 m/s. The rod has a diameter o

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Answer:

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Explanation:

given data

temperature = 20°C

velocity = 10 m/s

diameter = 5 mm

surface emissivity = 0.95

surrounding temperature = 20°C

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to find out

surface temperature

solution

we know that here properties of air at 70°C

k = 0.02881 W/m.K

v = 1.995 × $10^{-5}$ m²/s

Pr = 0.7177

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now we use churchill and bernstein relation for nusselt no

Nu = $\frac{hD}{k}$ = 0.3 + $\frac{0.62 Re6{0.5}Pr^{0.33}}{[1+(0.4/Pr)^{2/3}]^{1/4}} [1+ (\frac{2506}{282000})^{5/8}]^{4/5}$

h = $\frac{0.02881}{0.005}$ 0.3 + $\frac{0.62*2506{0.5}0.7177^{0.33}}{[1+(0.4/0.7177)^{2/3}]^{1/4}} [1+ (\frac{2506}{282000})^{5/8}]^{4/5}$

h = 148.3 W/m².K

q conv = h∈(Ts- T∞ )

17000 = 148.3 ( 0.95) ( Ts - (20 + 273 ))

Ts = 413.66 K

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Answer:

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