Note: This content is accessible to all versions of every browser. However, this browser does not seem to support current Web standards, preventing the display of our site's design details.

  

Design, Construction and Resonance Tracking of a Laboratory-Scale, Loudspeaker-Driven Thermoacoustic Cooler

Author(s):

M. Giftthaler
Conference/Journal:

Master Thesis, FS 13 (10277)
Abstract:

This thesis describes the design, construction and control of a quarter-wavelength, loudspeaker-driven thermoacoustic refrigerator. The stack and resonator design is based on linear thermoacoustic theory combined with numerical simulations in the thermoacoustic design software DeltaEC. The mechanical layout focuses on experimental exibility and ease of maintenance, which leads to a modular system design. Despite using air at ambient pressure as working uid, the presented thermoacoustic cooler reaches more than 20 degrees Celsius temperature di erence across the stack. Based on an experimental system characterization, two di erent performance criteria and control goals are identi ed. For tracking the system's acoustic resonance frequency, a novel, harmonics-based control strategy is proposed, which does not require measurement nor estimation of the speaker state.

Year:

2014
Type of Publication:

(12)Diploma/Master Thesis
Supervisor:

R. S. Smith

File Download:

Request a copy of this publication.
(Uses JavaScript)
% Autogenerated BibTeX entry
@PhdThesis { Xxx:2014:IFA_4658
}
Permanent link