Luo T., Ma T., Zeng M., Wang Q., 2012, Stress Study on Different Designs of Ceramic High Temperature Heat Exchangers, Chemical Engineering Transactions, 29, 667-672.
As the growing depletion of energy and resource, there is an increasing need to improve the fuel utilization efficiency, and in many cases it can only be achieved by improving the operating temperatures. As the leading material for high temperature, ceramics are proposed to fabricate heat exchangers used for high temperature exhaust heat recovery and other industrial applications. Due to the extreme operating condition, it’s essential to analyze the thermal stress distribution and reduce the overall stress level to ensure their operating safety. In this paper, the thermal stress performances of common and new designed ceramic plate heat exchangers are presented. According to the results, the maximum thermal stress is found on the corners and connection regions. Some structure modifications are proposed for the common plate designs to protect its joint regions and the cracks are predicted to generate initially at the outer surface of the primary surface plate.
