Heat transfer area for the production, Chemistry

Assignment Help:

In the Lectures where the necessary heat transfer area for the production of aspirin was being discussed, we had calculated (a) the volume of the scaled up version of the tank and the agitation rate (V = 1500 Litres and N = 630 rpm). We had also calculated (b)  the heat transfer required from the steam jacket in the scaled up version to heat from 70oC to 80oC. (Heat Transferred = 76107.6 kJ/h). We now have to consider the necessary tank volume if the agitation intensity is unchanged , we are adding 200kg/h of crystals and we have heat transfer sufficient to keep the solution at 75oC.

The following guidance notes are given to extend the lecture notes:

The case study brief said that heating and dissolution of the crystals required 460 kJ/kg. Thus the energy needed is 460x200 = 92000kJ/h. This indicates that we need more heat transfer area then calculated in Part (b) of the study, thus we will have to increase the volume of the dissolution tank. If we ay that the new heat requirement is Q2:

1000_Heat transfer area for the production.png

 

If we take the ratio of the heat transfer coefficients:

489_Heat transfer area for the production1.png

 

We had shown:

1422_Heat transfer area for the production2.png

If this is substituted into equation (1)

1599_Heat transfer area for the production3.png

This can be written as  802_Heat transfer area for the production4.png

Now we can write:

13_Heat transfer area for the production5.png

If we go back to our Pilot Plant where Q1 is 7290 kJ/h then we can calculate an adjusted volume - this is the task in CASE 3.


Related Discussions:- Heat transfer area for the production

What are the characteristics of bases, Q. What are the characteristics of b...

Q. What are the characteristics of bases? Ans. Common bases are borax, baking soda, and antacids. These are some characteristics of bases: They taste bitter

Explain product specification of mustard, Mustard Although the primary...

Mustard Although the primary use of mustard seeds is a condiments, important new food applications are regularly being found. Commercially available mustard products include m

Biodegradable polymers, Biodegradable polymers These are the polymers t...

Biodegradable polymers These are the polymers that are degraded through micro-organisms in an appropriate period so that biodegradable polymers and their degraded products do n

Write the reaction involved in phenol to salicyclic acid, Write the reactio...

Write the reactions and the conditions involved in the conversion of: a. Propene to 1-Propanol b. Phenol to Salicyclic acid

Solid state, How does crystallography help in study of crystal structure

How does crystallography help in study of crystal structure

Calculate the standard cell potential of the mercury cell, The cell diagram...

The cell diagram of a mercury cell can be written Zn(s) | ZnO (s) NaOH (aq) HgO (s) HgO (I) (a) Write the electrode reactions and cell reaction with electron number z = 2.

Qualitative analysis, why HNO3 is not used for detection of acidic radical ...

why HNO3 is not used for detection of acidic radical of 1st and 2nd group ions?

Define geometrical isomerism, Isomers, which vary in the orientation of gro...

Isomers, which vary in the orientation of groups around the double bounded carbon atoms, are known as geometrical Isomers. It is also known as Cis-Trans Isomerism.

Difference between mesomerism and resonance, Difference between Mesomerism ...

Difference between Mesomerism and Resonance Even though both resonance and mesomerism denote similar phenomenon, they are different in the following respect: Resonance inclu

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd