Results 81 to 90 of about 2,661 (278)

Thermodynamic Performance of Heat Exchangers in a Free Piston Stirling Engine

Energies, 2018
There is an increasing request in energy recovery systems that are more efficient, environmentally friendly and economical. The free piston Stirling engine has been investigated due to its structural simplicity and high efficiency, coupled with its ...
Ayodeji Sowale, Athanasios J. Kolios
doaj   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

Shock wave propagation characteristics of aluminum‐containing explosive in corrugated steel‐lined tunnel

Deep Underground Science and Engineering, EarlyView.
Aluminum‐enhanced afterburning renders AE explosives more hazardous than conventional ones. Corrugated steel linings reduce far‐field AE blast overpressure by ~50% through wave reflection and dissipation. The developed model accurately predicts peak pressure (<10% error) and arrival time (<3% error), supporting protective design.
Zhen Wang, Jiayu Peng, Hujun Li, Yuguo Ji, Shuobiao Li, Guokai Zhang   +5 more
wiley   +1 more source

Investigation on tunnel stability considering pipe‐roof support with transparent soil technology

Deep Underground Science and Engineering, EarlyView.
This study integrates transparent soil technology, 3D reconstruction and numerical simulation to captures the full‐field deformation of shield tunnel instability. Results demonstrate that pipe‐roof support enhances stability via the “soil‐arching barrier effect,” effectively restraining failure wedge development by extending stress transfer paths ...
Zhi Jia, Yunpeng Ji, Zhao Lu, Honghua Zhao, Limin Zhang   +4 more
wiley   +1 more source

Enabling Ultrastable Microbubbles With Graphene Aerogel Enrichment and Machine Learning for Highly Efficient Carbon Storage

Electron, EarlyView.
This study aims to introduce a novel‐designed structure of the colloidal aphron microbubbles reinforced by incorporating hydrophobic aerographene microparticles onto the hydrophobic outer shell. This results in the formation of a robust composite film and armored microbubble that offers exceptional ultrastability under elevated pressures of up to 400 ...
Mohammad Hossein Akhlaghi, Malek Naderi, Ali Pilehvar Meibody, Shurui Yang, Mojtaba Abdi‐Jalebi   +4 more
wiley   +1 more source

From Beale Number to Pole Placement Design of a Free Piston Stirling Engine

Archive of Mechanical Engineering, 2017
In this paper, pole placement-based design and analysis of a free piston Stirling engine (FPSE) is presented and compared to the well-defined Beale number design technique.
Zare Shahryar, Tavakolpour-Saleh Alireza, Omidvar Amir   +2 more
doaj   +1 more source

A review on free piston linear engine (FPLE)

, 2018
Free piston engine generator (FPEG) in the engine system can be considered as a linear energy conversion system. Cascade control for the stability of piston operation level and PID controllers are proposed for both the outer and inner loop.
Heikal, M. R., Shaharin A. Sulaiman, Aziz, A. Rashid A., S. Norazilah A. Tamili, M. R. Heikal, Sulaiman, Shaharin A., Firmansyah, Tamili, S. Norazilah A., Ezrann Z. Zainal, A. Rashid A. Aziz, Zainal, Ezrann Z.   +10 more
core   +1 more source

Synthesis and Evaluation of Ceramic‐Anchored Cu‐Ce‐MnOx Catalyst for Low Temperature Reduction of Diesel Engine NOx Emissions Using Liquefied Petroleum Gas or Adblue as Reductants

Energy Science &Engineering, EarlyView.
LPG converting harmful NO represented by the dark smoke to harmless N2 and H2O shown by the white smoke over Cu‐Ce‐MnOx catalyst. ABSTRACT Manganese oxide‐based catalyst doped with copper and cerium was synthesized through microwave irradiation and successfully anchored on a ceramic support.
Brian O. Obita, Simon Ngigi Mbugua, Clare I. Muhanji, Joseph O. Lalah   +3 more
wiley   +1 more source

Coupled dynamic-multidimensional modelling of free-piston engine combustion

Free-piston engines are under investigation by a number of research groups worldwide, as an alternative to conventional technology in applications such as electric and hydraulic power generation.
Mikalsen, R., Roskilly, A.P.
core   +1 more source

RE-1000 free-piston Stirling engine update

, 1985
A free piston Stirling engine was tested. The tests performed over the past several years on the single cylinder engine were designed to investigate the dynamics of a free piston Stirling engine.
Schreiber, J. G.
core