Investigation of Microtubular Ceramic Structures.

摘要

Calculations and experiments were conducted to explore the feasibility of producing very compact high-temperature heat exchangers via microtubular ceramic structures. Such microtubular ceramic structures consist of multiple interconnected ceramic tubes with very thin walls,small diameters,and modest ratios of length to diameter. As a result,they should have reasonable strength,as well as very high specific area. The investigation included:calculations of expected volume requirements and heat-exchange performance for microtubular ceramic heat exchangers compared to one of conventional dimensions;experiments seeking to define means for preparing leak-tight microtubular ceramic structures;preliminary exploration of means to provide separate manifolds to the interior and exterior of the microtubes;and a leak test of one experimental manifold microtubular ceramic structure. (Author)