28/03/2020
We have made available on You Tube 4 video's : Masterclass Helixchanger UK & Dutch version and ABC Heat Exchanger Course Module 1 UK & Dutch version. For the Dutch version there are 12 modules available on www.leama.nl and the cost is € 99/module. (www.youtube.com and search for bert boxma or heat transfer abc)
Technology Transfer: Sharing know-how is important.
Sustainable heat exchangers : Big Business.
Fouling in heat exchangers in industrialized countries, e.g. The Netherlands, is representing a percentage of 0.25% of the GNP (1), which is €1.75 Billion per annum. If engineering companies and end users have sufficient knowledge of heat exchangers and make the right selections, savings will be substantial.
During the last 20 years numerous heat exchanger technologies have been developed. But a conservative approach of the (petro-chemical) industry has led to minimum implementation of these fouling mitigation technologies. But there is a growing need to increase the availability and reliability of plants. The improvement of run length, fouling abatement and reduction of green-house gas emissions are hot topics. Improved heat exchanger technologies can play an important role to achieve these goals. Bert Boxma, ex-Chairman of NLAHX (Netherlands Advanced Heat Exchangers) from Agentschap NL (SenterNovem) supported by Ministry of Economic Affairs, has stimulated for years engineers to use these fouling mitigation and energy saving heat exchanger technologies. In discussion with Bert Boxma, an international heat exchanger expert, is observing a gap in know-how in design and selection of heat exchangers.
Bert holds a Bachelor degree Chemical Engineering and has gained his 37 years of experience at different positions as Process Engineer, Heat Exchanger Specialist, Project Engineer, Senior Mechanical Engineer, Business Development Manager, Trainer and Trouble shooter. Previous companies involved are Badger (Raytheon, Washington), GEA (Kelvion), FLUOR, Mc Dermott (CB&I, ABB) Lummus Heat Transfer, where Bert has developed his expertise. Also he was the first Chairman and founder of the first HTRI’s Communication Committee (1994-1997). Further he was Chairman of NLAHX from 1998-2009 and was member of Tasc-Force ISO16812 and the Crude Oil Fouling Working Party by ESDU in UK from 1999-2003.
Today he is an independent consultant and founded his company Heat Transfer ABC B.V. in 2006. Bert is sharing his knowledge by providing heat exchanger training. Traveling is in his blood and many countries has been visited to perform training. He started with his exchanger course in The Netherlands and Belgium. Other countries e.g. Spain, Qatar, Oman, UAE, Indonesia, Malaysia, Vietnam and Iran followed. These travels gave him insight information of local design procedures. In order to keep up with the high demand for heat exchanger courses, he started a joint venture with LEAMA in The Netherlands to offer the popular course TEMA & HTRI Heat Exchanger Cost Saving Management as an online course. For engineers and post graduates an ideal opportunity to learn on materials behind their computer. Not spending time for travel and making extra costs.
Choose the right heat exchanger type or technology for a certain process application.
Selection of a heat exchanger technology is important for grass root plants but also in refurbishment situations. Questions like : ”In which environment the heat exchanger need to perform” and “What is Total Life Cycle Cost” needs proper attention. With long term planning one can save costs and energy. So acting is better than talking about new technologies. Make proper decisions and do not hesitate to consult an expert or follow a course to upgrade your knowledge.
(1) Heat Exchanger Fouling, Mitigation and Cleaning Technologies by Prof.Dr.Ing. H. Müller-Steinhagen, ISBN 0 85295 436 0, Publico, Essen Germany, 2000.
Shell & Tube Heat Exchanger
The Shell & Tube Heat heat exchanger is still by far the most used heat exchanger type in the world and they exist more than one century. Before the Second World War, the methods in thermal and mechanical design of this type were numerous. This heat exchanger type is a pressure vessel and in the early day’s exchangers did explode due to failures in design. It was 1941 when the TEMA standard was born. TEMA (Tubular Exchanger Manufacturer’s Association) (www.tema.org) is recognized by engineers as the “Bible” for Shell & Tube Heat Exchangers. Besides TEMA, we have ISO 16812 for the specification of Shell & Tube Heat Exchangers. Operating at very high pressures and temperatures the shell and tubular is the only possible solution. Hot and cold stream are running in and around the tubes and heat transfer is taking place at the tube wall. Same principles apply when the velocity at the wall increases the higher the heat transfer will be. At the tube wall a microscopic layer is responsible for this heat transfer. The thinner this layer the better the heat transfer. The higher heat transfer will result in the most economic and smallest size heat exchanger.
Points of interest
Important aspects while designing shell and tubular are fouling, tube vibration and the improvement of heat transfer on both side of the tube. These drivers have led to creative and innovative solutions. In presentations at the NLAHX meetings, have stimulated the members to make a step forward in energy savings.
To further enhance the shellside heat transfer and reduce fouling one could select a Helixchanger® Heat Exchanger. Bert had a particular interest in this product when working at ABB from 1998-2006 to explain the product in full all over the world during presentations. The number of references went from 13 (1998) to 1500 in 2006. Today the number of references has increased to the level of 5000 worldwide.
Helixchanger® Heat Exchanger
A Helixchanger® Heat Exchanger is a shell & tube type, but now provided with baffles (quadrants) drilled in an angle. The shellside medium is flowing in a helical flow leaving no place for dead zones what happens in conventional baffled exchangers. Shellside fouling is minimized and the run length is improved by a factor of four as reported by EXXONMOBIL. This major oil company has installed approximately 10% of the total installed Helixchanger® units in the world. The invention was made forty years ago by the mechanical engineer called Jan Nemcansky. During 1994, ABB (now Mc Dermott) Lummus Heat Transfer has bought the technology from Vuchz (Czech Republic) and further developed it.
Masterclass Helixchanger® heat exchanger
In this Masterclass the Helixchanger® Heat Exchanger will be explained in full. Graphics, tables and many pictures of live equipment will be shown. The run time of this Masterclass is 1 hour and 15 minutes. Examples of grass root and refurbished equipment will be discussed. Total Life Cycle Cost savings of 35% are possible! Curious how to achieve this? LEAMA is offering you this Masterclass.
Copyright © by A.J. Boxma, CEO of Heat Transfer ABC B.V. 2020.
De ontwikkelingen in de techniek gaan razendsnel. We horen veel over 3D printen, robotisering, lasertechnologie, smart industrie, internet of things, enz. Er kan steeds meer. Om verder te kunnen ontwikkelen is een brede kennis over verschillende materialen en hun toepassingen onontbeerlijk. De basis...
