Results 31 to 40 of about 3,710 (248)

Design and analysis of cryogenic CO2 separation from a CO2‐rich mixture

open access: yesEnergy Science &Engineering, Volume 11, Issue 7, Page 2253-2266, July 2023., 2023
We design and optimize the cryogenic separation process of a CO2 mixture gas and establish static process model using HYSYS simulation software. The appropriate design parameters of the device are obtained and the reasons for the change law are analyzed.
Mingzhen Lin   +6 more
wiley   +1 more source

Prediction on onset conditions of alpha, beta, and gamma type free piston Stirling generators

open access: yesEnergy Science &Engineering, Volume 11, Issue 6, Page 2052-2065, June 2023., 2023
This manuscript establishes thermal‐dynamic coupling models of different types of free‐piston Stirling generators and uses the Routh stability criterion to predict startup conditions. The proposed method is not only beneficial to understand the startup characteristics of the different types of Stirling generators but also plays a reference role in the ...
Chunyun Chi   +5 more
wiley   +1 more source

Modeling dynamics of the spacecraft power plant consisting of Stirling engine and external thermal circuit [PDF]

open access: yesE3S Web of Conferences, 2021
Modern space programs cover a wide range of missions, including both near-earth missions and those affecting areas of deep space. In the second case, power plants based on the conversion of thermal energy into electrical energy are often considered for ...
Valiullin Aigiz, Zenkin Vladimir
doaj   +1 more source

Analytical modelling of a slotless tubular interior permanent magnet machine considering iron poles permeability

open access: yesIET Electric Power Applications, Volume 17, Issue 5, Page 607-627, May 2023., 2023
An analytical method is proposed to model the magnetic field distribution across a slotless tubular interior permanent magnet machine. The proposed model has both accuracy and low computational burden. Abstract An analytical method is proposed to model the magnetic field distribution across a slotless tubular interior permanent magnet machine. In order
Mohammad Hosein Javanmardi   +1 more
wiley   +1 more source

Modelling and control strategy of a distributed small‐scale low‐temperature geothermal power generation system

open access: yesIET Renewable Power Generation, Volume 17, Issue 3, Page 539-554, 24 February 2023., 2023
Abstract At present, commercial geothermal power stations are mainly high‐temperature and medium‐temperature geothermal energy, while the large number of low‐temperature geothermal energy resources are rarely used for power generation applications. This paper proposes a new model for energy conversion in low‐temperature geothermal power systems.
Tan Zhili   +3 more
wiley   +1 more source

Design Optimization of Flexure Springs for Free-Piston Stirling Engines and Experimental Evaluations with Fatigue Testing

open access: yesEnergies, 2021
The free-piston Stirling engine is a closed-cycle regenerative heat engine that converts heat energy into mechanical work, and requires a spring element for vibratory operations of the displacer and power pistons.
Chang-Whan Lee   +3 more
doaj   +1 more source

Magnetic Bearings for Free-Piston Stirling Engines [PDF]

open access: yesSAE Technical Paper Series, 1992
<div class="htmlview paragraph">This paper assesses the feasibility and efficacy of applying magnetic bearings to free-piston Stirling-cycle power conversion machinery currently being developed for long-term space missions. The study was performed for a 50-kWe Reference Stirling Space Power Converter (RSSPC) which currently uses hydrostatic gas ...
P. W. Curwen   +3 more
openaire   +1 more source

A Study on an Unpressurized Medium‐Temperature‐Differential Stirling Engine Integrated with a New Spiral‐Patterned Flat‐Flame Burner and a New Spiral‐Finned Hot‐End Plate

open access: yesInternational Journal of Energy Research, Volume 2023, Issue 1, 2023., 2023
The present study experimentally investigates the performance of a power generator constituted by an unpressurized Stirling engine coupled with a new flat‐flame burner. The operative temperature differential of the Stirling engine is within the medium range (around 400 K or less). In this work, there are two types of the engine’s hot‐end‐plate designs,
Wen-Lih Chen   +7 more
wiley   +1 more source

Growth and retreat of the last British–Irish Ice Sheet, 31 000 to 15 000 years ago: the BRITICE‐CHRONO reconstruction

open access: yesBoreas, Volume 51, Issue 4, Page 699-758, October 2022., 2022
The BRITICE‐CHRONO consortium of researchers undertook a dating programme to constrain the timing of advance, maximum extent and retreat of the British–Irish Ice Sheet between 31 000 and 15 000 years before present. The dating campaign across Ireland and Britain and their continental shelves, and across the North Sea included 1500 days of field ...
Chris D. Clark   +37 more
wiley   +1 more source

Quantum Communication Using Semiconductor Quantum Dots

open access: yesAdvanced Quantum Technologies, Volume 5, Issue 7, July 2022., 2022
Engineered quantum light sources based on semiconductor quantum dots have the potential to boost applications of quantum communication. This review summarizes implementations of quantum key distribution using single‐photon and entangled photon pairs generated via quantum dot devices.
Daniel A. Vajner   +4 more
wiley   +1 more source

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