Results 231 to 240 of about 4,263,436 (357)

Data on the natural ventilation performance of windcatcher with anti-short-circuit device (ASCD). [PDF]

open access: yesData Brief, 2016
Nejat P   +4 more
europepmc   +1 more source

Ensuring desired natural ventilation rate by means of optimized openings [PDF]

open access: green, 2009
Louis Stéphan   +3 more
openalex  

Microalgae to Biofuel: Cutting‐Edge Harvesting and Extraction Methods for Sustainable Energy Solution

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT The increasing price and demand for fossil fuels are driven by their depletion, greenhouse gas emissions, and industrial air pollution. As a result, the search for renewable alternatives has gained serious attention. Microalgae provide a sustainable alternative for biofuel production, offering high growth rates, significant oil yields and ...
Abu Saleh Ahmed   +7 more
wiley   +1 more source

Research on Grouted Steel Pipe Supports Roof Cutting and Gob‐Side Entry Retaining Support Technology for Fully‐Mechanized Caving Face

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT Aiming at the roof control challenges of gob‐side entry retaining in fully mechanized top‐coal caving faces, traditional concrete‐filled steel tube (CFST) support technology exhibits limitations such as slow strength development and complex construction equipment.
Xiaojun Li   +3 more
wiley   +1 more source

Porosity Optimization Model to Characterize Gas Seepage Behavior in Longwall Mining Gobs: An Application Case and Simulation Analysis

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT The degree of fragmentation of coal rock determines the porosity distribution of goaf porous media, which can be expressed using empirical formulas. However, this method fails in regions with nonuniform caving, dynamic disturbances, or deep high‐stress conditions. Therefore, this study developed a porosity optimization model comprising A and B
Yipeng Song, Zhongshan Wang, Yueping Qin
wiley   +1 more source

A New Model for Calculating Voidage in Goaf Under Roof‐Cutting Pressure Relief Mining: Exploring the Influence of Volumetric Strain on Voidage From the Perspective of Finite Element

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT Roof cutting and pressure relief mining technology has been applied in coal mine enterprises because of its advantages of improving the resource utilization rate. Compared to the previous longwall mining mode, the roof unloading and caving characteristics of goaf have undergone significant changes, leading to different patterns of overlying ...
Mengke Liu   +4 more
wiley   +1 more source

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