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Production • Processing • Handling


outlet of the heat exchanger, causing turbulence in the tubes, fouling is prevented. Less fouling means less maintenance in terms of costs and chemicals but in some applications the Klarex heat exchanger can also lead to enormous energy savings. When for instance crude oil is to be heated, the second heat exchanger can be switched into a Klarex heat exchanger. Tis will produce enormous energy savings since the steam, originally needed to heat the crude oil in the fouled second heat exchanger, can be reduced even by half, because the klarex heat exchanger stays clean.


Energy saving and noise reduction Te Whizz-Wheel ultra-low noise and ultra high efficiency fans were specially developed using the most sophisticated airflow simulation software, with the goal of decreasing the acoustic load on the surroundings. It also leads to more than 50 per cent


energy savings, resulting directly into large CO2 emission reductions. Tis means a tremendous basic energy saving in terms of sustainability. Sjoerd Ruevekamp, sales engineer, says: “For our


client Technip I calculated how much they would be saving in energy costs in 10 years. Tey will install our Whizz-wheel installations in February 2012”.


Process optimisation Te designer, the operator and/or the owner of a plant are the experts in the process layout of that plant. It is common practise in the oil business that these same experts also define operations and processes in great detail. Chief design engineer Johan van der Kamps adds: “Tis means that companies like Bronswerk who are experienced designer of components and systems, are only allowed to quote and build what the process expert has decided and “unalterably”


Table 1. Cost savings Installation with standard fan


Investment costs Number of fans Installed electrical fan power Electricity costs* Number of yearly operating hours**


Total electricity costs in 10 years (kW x 0,10ct.kWh x 8000 x 10)


Saving in energy costs in 10 years:


€1.176.500, - 2


156 kW


0, 10ct/kWh 8000


€1.248.000, - Installation with Whizz-Wheel fan


€1.247.500, - 2


74 kW


0, 10ct/kWh 8000


€592.000, - €656.500, -


* 0, 10ct/kWh is an estimation. Client needs to know their own kWh price for tailor-made calculation. ** 24 (hours) x 7 (days) x 52 (weeks) = 8736. Plants do not operate at full capacity, there are service and maintenance hours, thus 8000.


www.engineerlive.com 51


Fig. 2. EM-baffle: this design guarantees clean tubes on the outside resulting in reduced pressure drop over the shell.


specified. Te feedback of our know-how and experience is hardly ever allowed to take place.” In businesses other than oil, Bronswerk has


shown that it can improve and optimize the process with great benefit for the owner of the plant. Bronswerk could safe large amounts of investment and operating costs for the oil industry if they would allow more feedback. Te know-how in process optimisation can possibly even double your operational profits. ●


Enter 51 or ✔ at www.engineerlive.com/iog


Femke Schaefer is with Bronswerk Heat Transfer BV, Nijkerk, The Netherlands. www.bronswerk.com


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