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In the above problem, if the saturation temperatures of water at 2 bar and 20 bar are 120⁰C and
212⁰C respectively and the ambient temperature is 20⁰C, find the turnaround efficiency if storage
time is 15 hrs ?
benzene by mass is separated by distillation into two fractions. The mass flowrate of the
benzene (B) in the top stream is 500 kg (B) /h and that of toluene in the bottom stream is 485 kg
(T) / h. The unit operates at steady state.
3.1.1. Draw a schematic diagram showing all the relevant streams in the distillation unit. (8)
3.1.2. Write the basis for calculation.
Realize the following two filters using electrical circuits consisting of resistor(s) (R), and capacitor(s) (C), obtain their step responses based on the circuits using the software. 2.1 𝑉𝑜𝑢𝑡1 𝑉𝑖𝑛1 = 𝑠 𝑠+5 (10) 2.2 𝑉𝑜𝑢𝑡2 𝑉𝑖𝑛2 = 1 2𝑠+1
Refer to Fig 3 when answering question 3. In the circuit , , and . The switch was at position a for a very long time and is switched to position b at t=0. c b a - + V0 Ra Rb () c v t () ci t Fig 3. (i) Find the capacitor voltage, as a function of time after the switch closes to position b at using the analytical approach (5). (ii) What will be the value of current at the instance of the switch change? (5) (iii) At what point in time will the potential difference across the capacitor be 15% of the original value? (5) (iv) Build the circuit of Fig 3 in PSpice or Multism. Simulate and measure the power and energy dissipated in the circuit between t=0s and t=15ms (10
Water at the rate of 4 kg/s is heated from 40o
C to 55o
C in a shell and tube heat
exchanger. On the shell side one pass is used with water as the heating fluid
and at a mass flow rate of 2kg/s, and entering the heat exchanger at 95o
C. The
overall heat transfer coefficient is 1500 W/m2
K. and the average water velocity
in the 2 cm diameter tubes is 0.5m/s. Because of space limitations, the tube
length must not exceed 3 m. Calculate the number of tube passes , the number
of tubes per pass and the length of the tubes, keeping in mind the design
constraints
Derive the recurrence for double tower of Hanoi problem. Find the closed form for it.
Formulate the recurrence and derive closed form for Josephous problem.
