Utilizing low temperature differences from solar vacuum tube collectors or waste heat in the
range 70-200 C seems to be the most promising field of applications for thermo acoustic …

A thermoacoustic model is used to efficiently implement a bidirectional impulse turbine into a
thermoacoustic refrigerator. Experiments are done for several gas types and mean …

We describe the development of a novel instrument intended for the measurement of the
acoustical reflection coefficient of materials. The instrument effectively implements a one …

Acoustic absorption, reflection, and transmission is typically measured using an impedance
tube. We present the design and initial measurements of a radically different measurement …

This paper presents the theory and design of a Vector-corrected Network Analyzer realized
in the acoustic domain. This is a novel measurement instrument based on the established …

The Vector-corrected Network Analyser (VNA) has been an indispensable tool for many
decades in the field of RF and microwave engineering where the availability of calibrated …

This research aims at increasing the accuracy and precision of characterising acoustic
materials by adapting well-known techniques developed for the radio-frequency domain to …