ap319773

26.07.2019 • 

Engineering

In an oil cooler, 0.06 kg s of hot oil enters a thin metal pipe of diameter 25 mm. an equal mass flow rate of cooling water flows through the annular space between the pipe and a larger concentric pipe. the oil and water move in opposite direc- tions. the oil enters at 420 k and is to be cooled to 320 k. if the water enters at 290 k, what length of the pipe will be required? take heat transfer coefficients of 1.6 kw m k- on the oil side and 3.6 kw m-2 k-1 on the water side and 2.0 kj kg1 k-1 for the heat capacity of the oil and 4.18 kj kg k for the heat capacity of water.

Ответ:

joserodriguez212004

23.02.2022

Engineering

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Ammonia, or breathing promblems, or elderly

Explanation:

Because it makes it harder to breate.

if someone is smoking around somebody who has Ammonia, breathing promblems ,or elderly, it makes it harder to breate because of the smoke and nicotine from the ciggerate.

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