Results 11 to 20 of about 54,728 (275)

Using a Digital Twin as the Objective Function for Evolutionary Algorithm Applications in Large Scale Industrial Processes

open access: yesIEEE Access, 2023
In this paper, we describe how the up-to-date state of a digital twin, and its corresponding simulation model, can be used as a fitness function of an evolutionary algorithm for optimizing a large-scale industrial process.
Miro Eklund   +5 more
doaj   +1 more source

Une double conduite en bois découverte avenue du Point-du-Jour à Lyon

open access: yesGallia, 2023
An excavation conducted at 73-75-77 avenue du Point-du-Jour in Lyon (Rhône) in January 2020 brought to light a hydraulic system consisting of a double wooden pipe.The two parallel pipes lie in a ditch measuring 4 m in width and 2.80 m in depth.
Sylvain Motte
doaj   +1 more source

Leak Detection in Water Pipes Based on Maximum Entropy Version of Least Square Twin K-Class Support Vector Machine

open access: yesEntropy, 2021
Numerous novel improved support vector machine (SVM) methods are used in leak detection of water pipelines at present. The least square twin K-class support vector machine (LST-KSVC) is a novel simple and fast multi-classification method.
Mingyang Liu, Jin Yang, Wei Zheng
doaj   +1 more source

New Dimensionless Correlations for the Evaluation of the Thermal Resistances of a District Heating Twin Pipe System [PDF]

open access: yesApplied Sciences, 2021
The heat losses from pre-insulated double-pipe district heating (DH) systems buried in a homogeneous soil are studied numerically. The study is conducted using the diameter of the pipes and their distance, the size of the insulation, the thermal conductivity ratio between the insulation and the soil, as well as the burial depth of the double-pipe ...
Corcione M.   +3 more
openaire   +2 more sources

Effects of Some Geometric Parameters in Energy-Efficient Heat Distribution of Pre-Insulated Double Pipes

open access: yesProceedings, 2018
In the case of a computational example, a few aspects of the twin pipe geometry are presented, which have an effect on heat losses through double heating ducts.
Dorota Anna Krawczyk   +1 more
doaj   +1 more source

Calculation model for strain of buried pipeline under the action of continuous surface displacement

open access: yesYou-qi chuyun, 2021
The long-distance oil & gas pipelines run through areas with various complicated geological conditions and often face the threats of geological hazards.
Ning GAO   +5 more
doaj   +1 more source

Reduction of Heat Losses Using Quadruple Heating Pre-Insulated Networks: A Case Study [PDF]

open access: yes, 2019
The paper presents an analysis of heat loss and reductions of annual emissions of air pollutants of a quadruple pre-insulated heating network by comparing this solution with the existing pre-insulated network consisting of four pre-insulated single pipes
Krawczyk, Dorota Anna   +2 more
core   +1 more source

The Influence of geometrical and operational parameters on internal flow characteristics of Internally Mixing Twin-Fluid Y-Jet Atomizers [PDF]

open access: yes, 2019
Internally mixing twin-fluid Y-jet atomizers are widely used in coal fired thermal power plants for start-up, oil-fired thermal power plants and industrial boilers.
Ehmann, M.   +3 more
core   +1 more source

Reduction of Heat Losses in a Pre-Insulated Network Located in Central Poland by Lowering the Operating Temperature of the Water and the Use of Egg-shaped Thermal Insulation: A Case Study

open access: yesEnergies, 2019
This paper presents possible variants of reducing the heat loss in an existing heating network made from single pre-insulated pipes located in central Europe.
Dorota Anna Krawczyk   +1 more
doaj   +1 more source

A Similarity Model of Specific Heat Loss Determined by Dimensional Analysis

open access: yesApplied Sciences, 2023
This article describes an innovative method for the determination of heat flow (specific heat loss; linear heat flow density) from a one-metre length of a twin pipe directly-buried heat network.
Mária Čarnogurská   +5 more
doaj   +1 more source

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