Chemical ProfessionalsChemical ProfessionalsBlog for those who believe in sharing and exchange of knowledge in Chemical Technology, Energy conservation, Chemistry, Chemical Engineering, Manufacturing etc Articles
Distillation Column Pressure - Low Vs High [Digg]
2008-04-09 07:51:00 Recently Willis has initiated a question on cheresources forum that - Is there any energy saving if we reduce or increase the column pressure to the maximum possible extent. It was really an interesting post & I thought to write on this issue here also. More About: Digg , Column , High
Positive Displacement Vs Centrifugal Pumps - How to Select [Digg]
2008-03-20 04:56:00 When to use a centrifugal or a Positive Displacement pump (PD) is not always a clear choice. To make a good choice between these pump types it is important to understand that the two types of pumps behave very differently. By looking at the performance chart below you can see just how different they are. The centrifugal has varying flow depending o More About: Pumps , Digg , Select
P&ID - learning small things for big projects [Digg]
2008-03-11 11:53:00 Normally a project passes through various phases e.g. basic engineering, detail engineering, equipment fabrication, erection, commissioning etc. The conceptual idea of business from the process development cell is converted to executable documents during basic engineering.This is the step where we need P&ID or piping and Instrumentation diagram More About: Projects , Digg , Small , Learning , Things
New Idea for better & low cost Insulation [Digg]
2008-03-03 07:12:00 Common problem of carrying out calculation of optimum insulation thickness, Yet loosing lot of energy in the form of heat loss or cold loss, need re-work on insulation due to damage over a certain period of 2-3 years during annual turnaround etc. etc.............. More About: Cost , Digg , Idea , Low cost , Insulation
Handy Excel Tool for Orifice Calculations [Digg]
2008-02-28 10:11:00 Process engineers need many calculations related to orifice design e.g. forRestriction Orifice Dia.Maximum possible flow through Restriction Orifice for a given dia.Flow of gases through spargers with a given hole size & pipe Dia.calculation of new size of holes for spargers.Pressure drop across Orifice.And many more.......... More About: Tool , Digg , Excel , Handy , Calculations
Water Saving - Amazing Nos [Digg]
2008-02-21 06:40:00 Recently going through some blog articles, I found the use of low flush toilets where water can be saved by more than 50%. Amazed by numbers, I thought to work out my self these numbers with ref to India & possible quantum of savings. More About: Digg , Water , Amazing , Saving
Can hot water freeze faster than cold water? [Digg]
2008-02-18 10:31:00 Hot water can in fact freeze faster than cold water for a wide range of experimental conditions. This phenomenon is extremely counter- intuitive, and surprising even to most scientists, but it is in fact real. It has been seen and studied in numerous experiments. More About: Cold , Digg , Water , Freeze
Biofuels emissions may be 'worse than petrol' [Digg]
2008-02-14 13:26:00 Biofuels, once seen as a useful way of combating climate change, could actually increase greenhouse gas emissions, say two major new studies.And it may take tens or hundreds of years to pay back the "carbon debt" accrued by growing biofuels in the first place, say researchers. The calculations join a growing list of studies questioning whether More About: Emissions , Digg , Biofuels
Seven things employees want most to be happy at work | csmon [Digg]
2008-02-14 13:26:00 Experts say job satisfaction begins with respect and appreciation, not salary and perks.Ask bosses what makes employees happy at work, and many are likely to think in terms of tangible rewards: a good salary, a pleasant office, generous benefits. Those play a role in job satisfaction, of course. More About: Employees , Work , Digg , Happy , Things
Use removable insulation in the plant [Digg]
2008-02-08 12:36:00 During maintenance, the insulation that covers pipes, valves, and fittings is often damaged or removed and not replaced. Pipes, valves, and fittings that are not insulated can be safety hazards and sources of heat loss. Removable and reusable insulating pads are available to cover almost any surface. More About: Digg , Plant , The Plant , Insulation
Cooling Tower: Performance calculation - II [Digg]
2008-01-29 04:59:00 In this part, I will explain the calculation of NTU for cooling towers, yes NTU which is very important & is similar to NTU in absorption towers.It helps in indentifying the performance, capacity & effciiency of your cooling tower. In next part of this post I will explain How to use these calculations for mesurement of efficiencies, prediction More About: Performance , Digg , Tower , Cooling
Cooling Tower: Performance calculation - I [Digg]
2008-01-23 07:29:00 I am invariably finding many hits on cooling tower capacity & performance calculation and related queries. Therefore, I have decided to include the detailed calculation procedure in order to enable many students & process engineers who are interested in improving cooling towers performance by following these simple steps. More About: Performance , Digg , Tower , Cooling
Improve efficiency of power transmission equipment [Digg]
2008-01-04 10:37:00 Happy New Year'2008 to All!Power transmission equipment e.g. gears or couplings are the most neglected areas where nobody (including good energy auditors also) focuses for energy saving opportunities.However, a certain approach or simple steps can improve their efficiency by at least 2% which may result in total annual cost saving in power More About: Equipment , Digg , Improve , Efficiency
How much you know your Boilers or Steam Generation System? [Digg]
2008-01-04 10:34:00 I am starting this open discussion for the benefit of all the readers / visitors of this site. Many students & even process engineers do not fully understand the concept of efficiency calculation methods especially for steam system and in particular steam generation system.So let me ask you One simple question.....Will the boiler efficiency inc More About: System , Digg , Steam , Generation
HVAC - Quick Calculation of refrigeration load for Rooms [Digg]
2007-12-15 06:32:00 A building or room gains heat from many sources. Inside occupants, computers, copiers, machinery, and lighting all produce heat. Warm air from outside enters through open doors and windows, or as ?leakage? though the structure. However the biggest source of heat is solar radiation from the sun, beating down on the roof and walls, and pouring More About: Digg , Quick , Load
Never Ignore Pump Bypass [Digg]
2007-12-15 05:42:00 Many of you, especially who are handling projects engineering, may be surprised when & why should I consider bypass for pumps. What is the utility for considering bypasses? Why not only relief valves are sufficient for safeguard against high pressure in the line? The list may be little longer than my expectation?. Here are few things to remember More About: Digg , Pump
Top 10 Worst Engineering Disasters [Digg]
2007-12-08 03:53:00 Mankind, for all its genius and amazing achievements, is still far from infallible. Buildings still have to be built, and that takes the collective know-how of hundreds of people, and anywhere along this chain of human assistance could easily appear a weakest link. Take the Titanic, for instance, sure they rammed into an iceberg, but ... More About: Engineering , Disasters , Digg
How to calculate viscosity of liquid mixture? [Digg]
2007-12-06 05:14:00 Have you ever faced a problem of calculating the Viscosity of a Muixture?Most of us feel that there is no approx formula for calculating Viscosity of mixture of liquids.Now here is a useful co-relation. Thanks to Milt, It is his effort which can be very useful for many of us More About: Digg , Liquid , Calculate
9 Simple Mental Math Tricks to Impress Your Friends [Digg]
2007-12-03 17:25:00 "This article presents nine ideas that will hopefully get you to look at arithmetic as a game, one in which you can see patterns among numbers and pick then apply the right trick to quickly doing the calculation. The tricks in this article all involve multiplication." More About: Mental , Friends , Tricks , Digg , Math
The 6 Most Important Experiments in the World [Digg]
2007-12-01 21:47:00 From the smartest artificial brain to the first artificial life More About: World , Digg , The World , Experiments
7 Geniuses That Never Won the Nobel Prize [Digg]
2007-11-23 18:07:00 Scientists and Intellectuals are supposed to be above petty politics and popularity contests, right? Nope. Here are a few bright bulbs that never got the fancy Nobel gold medallion (or the millions of Swedish krona that go with it). And you thought the Oscars were bad. More About: Digg , Nobel Prize
7 Habits of Highly Innovative People [Digg]
2007-11-16 23:35:00 Have you ever looked at super creative or innovative people, and felt they are special beings blessed with gifts? Creativity is actually more psychology than intellect. More About: People , Habits , Digg , Innovative
Acetic Acid Exchanger Failure - II [Digg]
2007-09-25 12:00:00 This is with reference to my earlier post on the topic.After analysis, we found that the selection of wrong type of pipe is causing typical failure problem. More About: Digg , Failure , Acid
Hot gas expander from GE [Digg]
2007-09-18 08:16:00 GE Oil & Gas has received GE ecomagination certification for hot gas expander technology that works with a waste gas recovery system to help refineries significantly reduce their energy costs while also lowering emissions.The hot gas expander for GE?s Power Recovery Air Train features GE?s latest technology and meets the rigid standards of ecom More About: Digg , Expander
Ethanol - Facts & Common Sense [Digg]
2007-08-16 09:40:00 The discussion on Energy saving in the production of these biofuels is not relevant to me. Becasue if we talk about this we are going to violate fundamnetal law of energy conservation. Total energy of the universe is conserved it can neither be created or destroyed only it can change from one form to another. So why to talk about it. It is already More About: Sense , Facts , Ethanol , Digg , Common
Catalyst to turn CO2 into fuel [Digg]
2007-08-16 05:53:00 A new catalyst that can split carbon dioxide gas could allow us to use carbon from the atmosphere as a fuel source in a similar way to plants."Breaking open the very stable bonds in CO2 is one of the biggest challenges in synthetic chemistry," says Frederic Goettmann, a chemist at the Max Planck Institute for Colloids and Interfaces in Potsda More About: Fuel , Digg , Turn , Catalyst
Improve Your Boiler Efficiency [Digg]
2007-08-08 07:17:00 How much is the typical coal fired boiler efficiency?Probably the best operating boiler can achieve ~80% or +/-2%.Historically, boiler efficiency has been limited due to the minimum temperature allowed for the auxiliary equipment. Heat lost up the stack was in exchange for keeping the flue gas temperature above the water vapor dew point to prot More About: Digg , Improve , Efficiency
Frictionless Compressors [Digg]
2007-07-31 07:16:00 Compressors that run on frictionless bearings are an enticing prospect. Dan Foss Turbocor, Inc. is now marketing a line of compressors that use magnetic bearings to provide essentially frictionless operation. These compressors have been on the market for about three years, and now McQuay International is incorporating the compressors into their new More About: Digg , Compressors
Ways to Save Energy in Pumps [Digg]
2007-07-25 11:34:00 Here is my experience based on energy audits of pumping systems in various chemical, metal, textile & petrochemical units.Design systems with lower capacity and total head.Do not assume these requirements are fixed.Calculate flow requirement based on actual mathematical nos without margins in each stage & then add 10-20% straightforwa More About: Energy , Pumps , Digg , Save
Life Cycle Cost (LCC) Analysis [Digg]
2007-07-24 13:47:00 Life-cycle cost analysis (LCCA) is a method for assessing the total cost of facility ownership. It takes into account all costs of acquiring, owning, and disposing of a project. LCCA is especially useful when project alternatives that fulfill the same performance requirements, but differ with respect to initial costs and operating costs, have to be More About: Life , Analysis , Cycle , Cost , Digg |
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