Results 51 to 60 of about 3,710 (248)

Overview of free-piston Stirling technology at the NASA Lewis Research Center [PDF]

, 1985
An overview of the National Aeronautics and Space Administration (NASA) Lewis Research Center (Lewis) free-piston Stirling engine activities is presented.
Slaby, J. G.
core   +1 more source

Magnetically Coupled Free Piston Stirling Generator for Low Temperature Thermal Energy Extraction Using Ocean as Heat Sink

Journal of Marine Science and Engineering
The ocean, as one of the largest thermal energy storage bodies on earth, has great potential as a thermal-electric energy reserve. Application of the relatively fixed-temperature ocean as the heat sink, and using concentrated solar energy as the heat ...
Hao Tian, Zezhong Gao, Yongjun Gong
doaj   +1 more source

Design of a Slot-Spaced Permanent Magnet Linear Alternator Based on Numerical Analysis

Energies, 2022
Linear alternators work seamlessly with Free-Piston Stirling Engines (FPSE) in the energy conversion process. This research concentrates on the design and development of a tubular slot-spaced Permanent Magnet Linear Alternator (PMLA) to be coupled with ...
Chin-Hsiang Cheng, Surender Dhanasekaran
doaj   +1 more source

Overview of NASA Lewis Research Center free-piston Stirling engine activities [PDF]

, 1984
A generic free-piston Stirling technology project is being conducted to develop technologies generic to both space power and terrestrial heat pump applications in a cooperative, cost-shared effort.
Slaby, J. G.
core   +1 more source

Performance Measurements and Control Characteristics of a 1 kW Class Free Piston Stirling Converter With AC Bus Controls

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
An experimental study of the control characteristics of a 1 kW class free‐piston stirling converter (FPSC) with alternating current (AC) bus controls is conducted. A performance test rig is constructed using a commercial beta‐type FPSC, and an AC bus controller that includes a tuning capacitor, a set of load resistors, and an AC power supply is ...
Jong-Su Park, Dong-Jun Kim, Kyuho Sim, Ayman Al-Quraan   +3 more
wiley   +1 more source

Perspectives and Energy Applications of Magnetocaloric, Pyromagnetic, Electrocaloric, and Pyroelectric Materials

Advanced Energy Materials, Volume 14, Issue 39, October 18, 2024.
This perspective paper outlines a strategic roadmap for potential breakthroughs in solid‐state heating, cooling, and energy harvesting technologies by 2040, focusing on electrocaloric, pyroelectric, magnetocaloric, pyromagnetic, multicaloric, and multipyroic materials and their applications.
Katja Klinar, Jia Yan Law, Victorino Franco, Xavier Moya, Andrej Kitanovski   +4 more
wiley   +1 more source

A Practical Guide to 3D Printing for Chemistry and Biology Laboratories

Current Protocols, Volume 4, Issue 10, October 2024.
Abstract Three‐dimensional (3D) printing promises a revolution in laboratory creativity by enabling rapid prototyping, broader availability of scientific apparatuses, and transformative scientific workflows. We believe all chemistry and biology laboratories should equip themselves with one or more 3D printers and a critical mass of scientists trained ...
Arjun S. Pamidi, Michael B. Spano, Gregory A. Weiss   +2 more
wiley   +1 more source

Linear Dynamic Analysis of Free-Piston Stirling Engines on Operable Charge Pressure and Working Frequency along with Experimental Verifications

Applied Sciences, 2021
This paper presents a linear dynamic analysis on operable charge pressure and working frequency of free-piston Stirling engines (FPSE) along with experimental verifications. The equations of motion of the FPSE are formulated as a 2-degree-of-freedom (DOF)
Dong-Jun Kim, Kyuho Sim
doaj   +1 more source

Rectification and converter control of the FPSLGs for energy storage applications

IET Renewable Power Generation, Volume 18, Issue 9-10, Page 1611-1625, 17 July 2024.
Four algorithms are proposed based on deep learning classification algorithms: CottonNet, a foreign fiber classification algorithm based on deep learning; CottonNet‐Res, a foreign fiber classification algorithm based on residual networks; CottonNet‐Fusion, a model improvement based on feature difference fitting; and CottonNet‐Siam, an improved model ...
Murad Ali, Yu Haitao, Saleh Mobayen, Jiahui Zhang, Anton Zhilenkov, Zakiud Din   +5 more
wiley   +1 more source

Will they be back? A framework to guide rare macrophyte conservation decisions in lakes

Restoration Ecology, Volume 32, Issue 1, January 2024.
Shallow lake restoration typically focusses on the re‐establishment of macrophytes. The likelihood of a species returning to a site is contingent on dispersal, proximity to propagule sources, and the on‐site propagule‐bank viability. We explore the potential of palaeoecological records in combination with botanical surveys and distribution maps, to ...
Helen Bennion, Carl Sayer, Ambroise Baker, Isabel Bishop, Azra Glover, Viv Jones, Alan Law, Genevieve Madgwick, Sylvia Peglar, Carole Roberts, Neil Rose, Simon Turner, Nigel Willby, Handong Yang   +13 more
wiley   +1 more source