Answer / sagar mashru

Hot Fluid should be passed from tube side. Because, If hot
fluid is passed from shell side than there will be heat loss
and there will also be a question of safety because of hot
surface on outer side.

Answer / vikram

hot fluid should passed from tube side because it is easy to
clear the tube side or we can easily replaced the tube if
fouling kind of things happen which will reduce the rate of
heat transfer,while cold water should passed through shell side

Answer / kln

We have to consider the properties like corrosivity,
fouling factor etc.. while selecting the t/s or s/s fluids
in an exchanger. More fouling/corrosive material to be
selected on t/s as cleaning or replacement of tubes are
easy.

Answer / k manoj kumar

Thank you guys. I have seen your answers. I have a doubt about it. Oil is neither corrosive nor acidic. Then why can't we send it through shell side?

Answer / umar

when both the fluids have equal corrosiveness, the fluid of high pressure should pass the tube side. Because the tendency of tubes to collapse by external pressure is double to that of by internal pressure.

We are having proplem with the persperation smell in ETT/ECHO room in our cardiac hospital.The 2 Ton of AC is not conditioning the environment. We have to use exhaust fan to through out of the room bad air. Could anyone suggest how to coup with this effectively using chemical engineering. Any permanent solution to neutralise the bad smell.The Air freshners are not doing enough instead making a bad odour.

1 Answers  

Suggest the best book for barc written test guide me the syllabus

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In case of welded vessels why is stress relieving in the form of post-weld treatment necessary?

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Explain why is post-weld heat treatment (stress relieving) sometimes necessary for welded vessels?

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Is there a handy way to determine if a horizontal pipe is running full if the flow rate is known?

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why distillation of water takes more time than toluene ,eventhough the later boiling point is more than water ?

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Question 81 - (a) In natural gas pipe sizing, the length of the pipe from the gas source metre to the farthest appliances is 60 feet. The maximum capacities for typical metallic pipes of 60 feet in length are : 66 cubic feet per hour for pipe size of 0.5 inches; 138 cubic feet per hour for pipe size of 0.75 inches; 260 cubic feet per hour for pipe size of 1 inch. By using the longest run method : (i) Find the best pipe size needed for the capacity of 75 cubic feet per hour. (ii) Estimate the suitable range of capacities for the pipe size of 1 inch. (b) The maximum capacities for typical metallic pipes of 50 feet in length are : 73 cubic feet per hour for pipe size of 0.5 inches; 151 cubic feet per hour for pipe size of 0.75 inches; 285 cubic feet per hour for pipe size of 1 inch. By using the branch method find the best pipe size needed for the capacity of 75 cubic feet per hour when the length of the pipe from the gas source metre to the appliance is 52 feet.

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A cylindrical vessel of 10m height has water upto 6m and is under a pressure of 15bar.What will be the pressure at the bottom most point of the vessel?

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Question 40 - A stream with volumetric flow rate Q enters a cylindrical tank and a stream with volumetric flow rate q exits the tank. The fluid has a constant heat capacity and density. There is no temperature change or chemical reaction occurring in the tank. Develop a model for determining the height of the tank, h. Let V is the volume, A is the cross sectional area, r is the density, m is the mass, where V and A are for the tank, r and m are for the fluid. The rate of mass of fluid accumulation, dm / dt = (Q - q) r. Prove the model to be dh / dt = (Q - q) / A.

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What is a "saltation velocity"?

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ACCOUNTING AND FINANCIAL ENGINEERING - EXAMPLE 34.25 : (a) If an engineering company has a policy to maintain A % debt ratio, it will limit its total debt B, to A % of all company assets with total assets C. Find the value of A as a function of B and C. (b) An engineering consultancy that designs biochemical processing plants has a beginning balance in a bank of value D. The interest paid by the bank to the consultancy for the saving is E. The consultancy withdraws F amount of money from the bank to cover the project cost. (i) Calculate the end balance in a bank of the consultancy by using the symbols of D, E and F etc. (ii) Find the value of the principal due to E and F.

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Name the three classes of organic solvents?

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