Low cost high performance laminate matrix

摘要

A porous solid substrate suitable for forming heat exchange elements and method for fabricating the substrate are provided. The porous solid substrate is usable in a regenerator or heat exchanger for exchanging thermal energy with a fluid flowing through elements formed from the substrate. Elements formed from the substrate are especially suitable for use in a regenerator matrix used in deep refrigeration cryocoolers based on the Stirling refrigeration cycle. The porous solid element substrate is formed from a plurality of thin screen sheets of interwoven stands of fine wire with each sheet having a thickness of substantially three times the diameter of the wire stands. Sheets are arraigned one above another with surfaces of adjacent sheets in mechanical contact. The sheets sintered in a high temperature high-pressure environment to form a composite element having sintered contact points between adjacent sheets. The composite elements are more easily handled, less susceptible to damage during manufacturing and reduce the manufacturing cost of the heat exchanger.