A Study on a Performance Test of Matrices for Stirling Engines : 1st Report, Heat Transfer Test of Various Matrices

Abstract

The heat transfer properties of various matrices for Stirling engine regenerators were evaluated and compared without mounting the matrices on actual engines, using a special test rig whith two rotary valves. On the test rig, a simple test piece of such a matrix is mounted and the two rotary valves allow heated air and unheated air to flow into the test matrix alternately in opposite directions. When rotary valves are fully opened, air flows into the test matrix at a prescribed mass flow rate. The rotary valves were driven at the speed of 30∼240 rpm, and air temperature variation at both ends of the test matrix was measured. From measured data, the rate of heat regeneration of each test matrix was calculated.