Abstract
Pillow plates are characterised by a high degree of geometrical and manufacturing flexibility, excellent structural strength, hermetic tightness and high thermo-hydraulic efficiency. These advantages open up a wide range of possible applications, and in the last two decades, numerous research studies have been dedicated to the thermo-hydraulic characteristics of pillow plates. In contrast, operational safety of pillow-plate-based equipment has gained limited attention. Due to the lack of design equations, the permissible operating pressure of such equipment is currently determined on the basis of the burst pressure obtained in time-consuming and cost-intensive experiments. In this work, we examine whether the burst pressure can be determined with the aid of finite element simulations. Furthermore, since preliminary studies have shown that the thermal resistance of pillow-plate heat exchangers can be significantly increased if they are fabricated from aluminium instead of stainless steel, we checked whether technically relevant pillow plates can be made of the aluminium alloy EN AW-5083.
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