Results 41 to 50 of about 552,781 (215)

Optical gas sensing: a review [PDF]

open access: yes, 2013
The detection and measurement of gas concentrations using the characteristic optical absorption of the gas species is important for both understanding and monitoring a variety of phenomena from industrial processes to environmental change.
Hodgkinson, Jane, Tatam, Ralph P.
core   +1 more source

ISENTROPIC EFFICIENCY OF CENTRIFUGAL COMPRESSOR WORKING WITH REAL GAS

open access: yesActa Polytechnica CTU Proceedings, 2018
The contribution deals with calculation of isentropic efficiency and also with calculation of isentropic process of real gas or gaseous mixtures. The method is based on numerical solution of basic definitional equation of isentropic process and equation ...
Jiří Oldřich
doaj   +1 more source

Real gas flows issued from a source [PDF]

open access: yesAnalysis and Mathematical Physics, 2019
14 pages, 8 ...
Valentin Lychagin, Mikhail Roop
openaire   +4 more sources

Coal and gas outburst early-warning technology based on change of gas concentratio

open access: yesGong-kuang zidonghua, 2016
In order to realize real-time, accurate and advanced prediction of coal and gas outburst in heading face, a coal and gas outburst earlywarning method based on change of gas concentration was proposed.
XU Xuezhan, MENG Xiangrui, ZOU Yunlong
doaj   +1 more source

Advanced Computer Vision-Based Subsea Gas Leaks Monitoring: A Comparison of Two Approaches

open access: yesSensors, 2023
Recent years have witnessed the increasing risk of subsea gas leaks with the development of offshore gas exploration, which poses a potential threat to human life, corporate assets, and the environment.
Hongwei Zhu   +8 more
doaj   +1 more source

Emissions pollutant from diesel, biodiesel and natural gas refuse collection vehicles in urban areas [PDF]

open access: yes, 2010
Urban pollution is more and more concern due to human health implications. In that way, emissions pollutant from commercial vehicles which move daily at fixed itineraries such as, buses and refuse collection vehicles must be monitored.
Jiménez Alonso, Felipe   +3 more
core   +1 more source

NUMERICAL CALCULATION OF THE STEAM CONDENSING FLOW

open access: yesTASK Quarterly, 2001
Considering the flow in the last stages of LP (low pressure) steam turbine the strong non-linearity of the thermal parameters of state and possibility of the two-phase flow have to be taken into account in the numerical calculation of the flow field. In
SŁAWOMIR DYKAS
doaj  

Gas geological dynamic analysis and gas emission real-time pre-warning system

open access: yesGong-kuang zidonghua, 2015
In order to prevent coal and gas outburst accidents and improve mine security capacity, gas geological dynamic analysis and gas emission real-time pre-warning system was built in Xinyuan Company. Gas geology spatial database was built based on statistics
CUI Junfei
doaj   +1 more source

A Real Option Perspective on Valuing Gas Fields [PDF]

open access: yesSSRN Electronic Journal, 2013
Real option theory has remained a fringe field; practitioners believe it is not practically applicable in complex real world environments. We show that this view is mistaken. We apply real option theory to a highly complex energy problem with unhedgeable risk, time varying volatilities and endogenous exercise dates (non-European options).
Zhao, L., van Wijnbergen, S.
openaire   +3 more sources

Enhanced Gas Recovery with Carbon Dioxide Sequestration in a Water-drive Gas Condensate Reservoir: a Case Study in a Real Gas Field [PDF]

open access: yesJournal of Petroleum Science and Technology, 2017
Gas reservoirs usually have high recovery due to high mobility and low residual gas saturation, although some of them producing under water-drive mechanism have low recovery efficiency.
Hossein Zangeneh   +1 more
doaj   +1 more source

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