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A novel solar-powered liquid piston Stirling refrigerator

  • The objective of this research project is to develop a solar-powered refrigerator in the lower capacity range of up to 5 kW of cooling power. With the use of liquid pistons and one of the most efficient thermodynamic cycles known, the Stirling cycle, this product has the potential to outperform rival solar cooling technologies while providing inexpensive, reliable, quiet, environmentally-friendly, and efficient solar cooling for residential use, due to its straightforward manufacturing, simple design and inert working gas. Presented in this paper are the newest results of the theoretical and experimental investigation into deducing the key design parameters and system configuration of the so-called Liquid Piston Stirling Cooler (LPSC), which will help lead to optimal performance. Computer models of the complex unconstrained system have been constructed and validated using the modelling software Sage and shown to replicate system behavior with reasonable accuracy in experiments. The models have been used to predict system improvements and identify limitations imposed by the use of liquid pistons. The results to date provide a unique insight into a relatively little studied area in Stirling cycle research.

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Metadaten
Author:Samuel Langdon-Arms, Michael Gschwendtner, Martin Neumaier
URL:https://doi.org/10.1016/j.apenergy.2018.08.040
Parent Title (English):Applied Energy
Document Type:Article (peer reviewed)
Language:English
Publication Year:2018
Tag:Free-pistons; Liquid pistons; Refrigeration; Renewable energy; Sage; Solar heating and cooling; Stirling cycle
Volume:229
First Page:603
Last Page:613
Peer reviewed:Ja
faculties / departments:Fakultät für Angewandte Natur- und Geisteswissenschaften