Friday, February 24, 2017

Top five courses for entry level Process Engineers

Process Engineering is  much complex discipline in  the field of Chemical Engineering. This field will challenge you like anything. While operating the process plant you may encounter with plethora of problems that need immediate attention, without which the result won't be pleasing.

Saturday, May 16, 2015

Excel calculator for LMTD

LMTD, Log mean temperature difference is the temperature driving force for heat transfer in flow systems. When you are calculating heat transfer by overall heat transfer coefficient (U), you should not simply multiply temperature difference of hot stream or cold stream. Multiplying this temperature difference doesn't account the overall driving force.

Tuesday, May 12, 2015

Pressure drop in pipe lines and fittings. Part-2

Pressure drop due to valves and fittings

In the earlier post, tutorial goes around pressure drop in pipe lines. Pressure drop arises due to skin friction and form friction. Non separated boundary layers cause skin friction whereas separated boundary layers cause form friction. In plain pipe pressure drop is due to skin friction. But in a pipe line with valves and fittings pressure drop is  mainly due to form friction. the pipe lines may be connected to equipment and again pressure drop will be there in that equipment. This tutorial is restricted to pressure drop in valves and fittings only.

Wednesday, March 11, 2015

Pressure drop in pipe lines and fitting. Part-1

Pressure plays a prominent role in driving and arresting the fluid flow from one place to another. What exactly is this pressure? One classical definition is
Pressure is force acted per unit area
Pressure definition by Cheminnering.blogspot.com

Wednesday, February 25, 2015

How to design a P&ID? Part-3

Earlier two parts of designing a P&ID were from process perspective of a P&ID. Now in this present part we will deal with the instrument aspects of a P&ID. Some of the most common instruments which we are using in process industry are transmitters, gauges, indicators, control valves, on off valves etc. The parameters which we are interested may be flow, temperature, pressure, concentration etc. Before going to discuss further about instrumentation part in P&ID it is better to get familiarized with the instrumentation terms. Let’s get started