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lora16 [44]
3 years ago
7

A hot toluene stream, which has mass flow rate of 8.0 kg/min, is cooled by cooling water in a cocurrent heat exchanger; its temp

erature drops from 90o C to 60o C after passing through the heat exchanger. The cooling water stream has a mass flow rate of 10 kg/min and an inlet temperature of 20o C. Given that the specific heats of toluene and water are 0.41 and 1.00 kcal/(kg.o C), respectively, determine (a, 3%) the heat duty of the heat exchanger, (b,3%) the temperature of the cooling water leaving the heat exchanger, (c, 3%) the log mean temperature difference (or "driving force") for the heat exchange process, and (d, 3%) the UA value of the heat exchanger. Assume a negligible heat loss to the surroundings.

Chemistry
1 answer:
Alex Ar [27]3 years ago
3 0

Complete Question  

The complete question is shown on the first question

Answer:

a) The duty of the heat exchanger is given as 6.8658 KJ /sec

b) The temperature of the water leaving the exchanger is TOUT = 29.84 ⁰C

c) The log mean difference is given as TZ = 47.317 ⁰ C

d) the UA value is UA = 145.10

Explanation:

The explanation is uploaded on the first and second ,third and fourth image

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The following equilibrium constants have been determined for hydrosulfuric acid at 25ºC:
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hey there!:

H2S(aq) <=> H⁺(aq) + HS⁻(aq)

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Hope this helps!

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