A suspension of Bacillus subtilis cells is filtered under constant pressure for recovery of protease. A pilot-scale filter is us
ed to measure filtration properties. The filter area is 0.25 m2, the pressure drop is 360 mmHg, and the filtrate viscosity is 4.0 cP. The cell suspension deposits 22 g cake per liter of filtrate. The following data are measured: (Hints: Change the unit to standard units)
Time (min) 2 3 6 10 15 20
Filtrate volume
(L)
10.8 12.1 18.0 21.8 28.4 32
a) Determine the specific cake resistance and filter medium resistance.
b) What size filter is required to process 4000 L cell suspension in 30 min at a pressure drop of 360 mm Hg?
Time (min) 2 3 6 10 15 20
Filtrate volume
(L)
10.8 12.1 18.0 21.8 28.4 32
a) Determine the specific cake resistance and filter medium resistance.
b) What size filter is required to process 4000 L cell suspension in 30 min at a pressure drop of 360 mm Hg?
1 answer:
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Answer:
For aluminum 110.53 C
For copper 110.32 C
Explanation:
Heat transmission through a plate (considering it as an infinite plate, as in omitting the effects at the borders) follows this equation:
Where
q: heat transferred
k: conduction coeficient
A: surface area
th: hot temperature
tc: cold temperature
d: thickness of the plate
Rearranging the terms:
d * q = k * A * (th - tc)
The surface area is:
If the pan is aluminum:
If the pan is copper:
Answer:
Work input =283.47 KJ
Explanation:
Given that
T=12°C=285 K
m= 2.5 kg
Given that this is the constant temperature process.
e know that work for isothermal process
So now putting the values
W=-283.47 KJ
Negative sign indicates that work is done on the system.
So work input =283.47 KJ