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Technical & Practical

February 1, 2009

Compact Heat Exchangers: Improving Heat Recovery

These units offer distinct advantages over shell-and-tube heat exchangers, as quantified by the example presented here

Johan Gunnarsson, Alfa Laval Lund AB; Iain Sinclair and Francisco J. Alanis, AspenTech UK Ltd.

Global warming is of major concern today. There is increasing pressure on industry to reduce both energy usage and the associated CO2 emissions. An important and profitable action that industry can take is to recover more process energy and thus improve the efficient use of that energy. This not only reduces the cost of primary energy supply and lowers CO2 emissions, but also provides benefits in terms of reductions in heat rejection and in the associated equipment and operating costs. While making such investments, it is also important that financial returns are maximized and that further opportunities for saving energy and reducing emissions are not missed. This article considers the use of compact heat exchangers (CHEs) for...

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