Nutrient medium is to be heated from 10⁰C to 28⁰C is a single-pass countercurrent shell-and-tube heat exchanger before being pumped into a fed-batch fermenter. Medium passes through the tubes of the exchanger; the shell-side fluid is water which enters with flow rate 3 x 10^4 kg h^- 1 and temperature 60⁰C pre-heated medium is required at a rate of 50 m^3 h^-1. The density, viscosity and heat capacity of the medium are the same as water; the thermal conductivity of the medium is 0.54 Wm^- 1 ⁰C ^- 1. It is proposed to use 30 steel tubes with inner diameter 5 cm; the tubes will be arranged in line. The pipe wall is 5-mm thick; the thermal conductivity of the metal is 50 Wm^- 1 ⁰C ^- 1. The maximum linear shell-side fluid velocity is estimated as 0.15 m s^-1. Calculate the overall heat-transfer coefficient._________

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#Question id: 52

#Section 2: General Biology

Choose the incorrect option regarding Isomerism.

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#Question id: 14915

#Section 1: Engineering Mathematics

For what values of k, with  and k > 0 does  converges 

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#Question id: 589

#Section 2: General Biology

When varying the substrate concentration at a fixed concentration of enzyme it is observed that at low concentrations of substrate the reaction is ________,while at high concentrations of substrate the reaction is ________.

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#Question id: 16775

#Section 1: Engineering Mathematics

If the mean and the mode are given as 35 and 30. Find the Median.

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#Question id: 20015

#Section 5: Bioprocess Engineering and Process Biotechnology

The concentration of biomass in a continuous stirred tank reactor is 20 g dry weight per litre. What would be the concentration of biomass in the effluent?