scholarly journals Investigation of Battery Charge and Discharge Behavior Based on Measured Field Data

2020 ◽  
Author(s):  
David Theuerkauf ◽  
Jordan Torrealba ◽  
Andrew Swingler
Keyword(s):  
Field Data ◽  
Battery Charge ◽  
Discharge Behavior ◽  
Measured Field ◽  
Behavior Based

Post-processing of measured field data using equivalent source technique

2011 ◽  
Author(s):  
L. J. Foged ◽  
L. Scialacqua ◽  
F. Saccardi ◽  
J. L. Araque Quijano ◽  
G. Vecchi ◽  
...  
Keyword(s):  
Field Data ◽  
Post Processing ◽  
Equivalent Source ◽  
Measured Field

A practical technique for estimating service life of MSW leachate collection systems

2013 ◽  
Vol 50 (2) ◽  
pp. 165-178 ◽  
Author(s):  
R. Kerry Rowe ◽  
Yan Yu
Keyword(s):  
Numerical Model ◽  
Service Life ◽  
Field Data ◽  
Oxygen Demand ◽  
Collection System ◽  
Leachate Collection ◽  
Design Charts ◽  
Leachate Characteristics ◽  
Practical Model ◽  
Measured Field

The leachate characteristics and clogging of the leachate collection system at the Keele Valley Landfill is examined using the numerical model “BioClog”. The calculated effluent leachate concentrations (e.g., the chemical oxygen demand and calcium concentrations) and calculated calcium fraction in the clog material are in encouraging agreement with measured field data. A new practical model is developed and calibrated against the data from the sophisticated numerical model to estimate the service life of leachate collection systems in typical municipal solid waste (MSW) landfills. The procedures for using the new practical model are provided and illustrated by examples. Design charts are presented that may aid the design of leachate collection systems for typical MSW landfills.

scholarly journals Quantification of the unknown HONO daytime source and its relation to NO<sub>2</sub>

2011 ◽  
Vol 11 (5) ◽  
pp. 15119-15155 ◽  
Author(s):  
M. Sörgel ◽  
E. Regelin ◽  
H. Bozem ◽  
J.-M. Diesch ◽  
F. Drewnick ◽  
...  
Keyword(s):  
Nitrogen Oxides ◽  
Gas Phase ◽  
Water Vapour ◽  
Field Data ◽  
Mixing Ratios ◽  
Photostationary State ◽  
Conversion Frequency ◽  
Photolysis Frequency ◽  
Electronically Excited ◽  
Measured Field

Abstract. During the DOMINO (Diel Oxidant Mechanism In relation to Nitrogen Oxides) campaign in southwest Spain we measured simultaneously all quantities necessary to calculate a photostationary state for HONO in the gas phase. These quantities comprise the concentrations of OH, NO, and HONO and the photolysis frequency of NO2, j(NO2) as a proxy for j(HONO). This allowed us to calculate values of the unknown HONO daytime source. This unknown HONO source, normalized by NO2 mixing ratios and expressed as a conversion frequency (% h−1), showed a clear dependence on j(NO2) with values up to 43 % h−1 at noon. We compared our unknown HONO source with values calculated from the measured field data for two recently proposed processes, the light-induced NO2 conversion on soot surfaces and the reaction of electronically excited NO2* with water vapour, with the result that these two reactions normally contributed less than 10 % (<1 % NO2 + soot + hν; and <10 % NO2* + H2O) to our unknown HONO daytime source. OH production from HONO photolysis was found to be larger (by 20 %) than the "classical" OH formation from ozone photolysis (O(1D)) integrated over the day.

scholarly journals Analysis of Performance of a Twin-Shaft Gas Turbine During Hot-End Damage in the Gas Generator Turbine

2018 ◽  
Author(s):  
Samuel Cruz-Manzo ◽  
Sepehr Maleki ◽  
Vili Panov ◽  
Festus Agbonzikilo ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Field Data ◽  
Dynamic Change ◽  
Correlation Coefficients ◽  
Physical Parameters ◽  
Gas Generator ◽  
Simulink Model ◽  
Flow Capacity ◽  
High Power Operation ◽  
Measured Field

In this study, an analysis of the performance of a twin-shaft industrial gas turbine (IGT) during hot-end damage in the gas generator turbine (GGT) at high-power operation has been carried out using a validated Simulink IGT model. The Simulink model is based on fundamental thermodynamics and allows the implementation of correlation coefficients in the GGT module to predict the performance of the IGT system during a hot-end GGT damage incident. Measured field data from a twin-shaft IGT operated as a power generation unit denoting a reduction in performance due to hot-end GGT damage are considered for the analysis. Four hot-end GGT damage incidents across a range of measured field data have been identified and considered for the analysis. The results show that the Simulink model can predict the change of physical parameters (pressure, temperature) across the IGT system for each GGT damage incident. Hot-end damage increases the flow capacity and reduces the efficiency of the GGT. Future work will validate the dynamic change of flow capacity and efficiency during different GGT damage incidents.

Component sizing and intelligent energy management of a heavy hybrid electric vehicle based on a real drive cycle

2016 ◽  
Vol 231 (1) ◽  
pp. 122-132 ◽  
Author(s):  
Mohammad Kebriaei ◽  
Mohammad Ali Sandidzadeh ◽  
Behzad Asaei ◽  
Ahmad Mirabadi
Keyword(s):  
Fuel Consumption ◽  
Energy Management ◽  
Hybrid Electric Vehicle ◽  
Field Data ◽  
Fuzzy Controller ◽  
Heavy Vehicle ◽  
Power Sources ◽  
Component Sizing ◽  
Measured Field ◽  
Traction Power

In this paper, hybridizing a heavy vehicle is developed. A switcher locomotive is considered for hybridization. Due to their low operational speed, the switcher locomotives require much lower power when compared to other types of locomotives. Besides, switcher locomotives have higher loss of energy due to their frequent starting and stopping. Hybrid-powered transit vehicles are considered to be excellent replacements for ordinary transit vehicles, since hybrid powered vehicles are equipped with more than one traction power sources. Therefore, a switcher locomotive’s driving cycle is derived from the measured field data and used to calculate and design the hybrid vehicle’s components. A “fuzzy controller” is used to plan a suitable controller for the designed hybrid locomotive. Comparisons show a substantial decrease, both in the fuel consumption and the pollutions of the designed hybrid switcher locomotive versus the conventional diesel-electric locomotives.

scholarly journals Quantification of the unknown HONO daytime source and its relation to NO<sub>2</sub>

2011 ◽  
Vol 11 (20) ◽  
pp. 10433-10447 ◽  
Author(s):  
M. Sörgel ◽  
E. Regelin ◽  
H. Bozem ◽  
J.-M. Diesch ◽  
F. Drewnick ◽  
...  
Keyword(s):  
Nitrogen Oxides ◽  
Gas Phase ◽  
Water Vapour ◽  
Field Data ◽  
Mixing Ratios ◽  
Photostationary State ◽  
Conversion Frequency ◽  
Photolysis Frequency ◽  
Electronically Excited ◽  
Measured Field

Abstract. During the DOMINO (Diel Oxidant Mechanism In relation to Nitrogen Oxides) campaign in southwest Spain we measured simultaneously all quantities necessary to calculate a photostationary state for HONO in the gas phase. These quantities comprise the concentrations of OH, NO, and HONO and the photolysis frequency of NO2, j(NO2) as a proxy for j(HONO). This allowed us to calculate values of the unknown HONO daytime source. This unknown HONO source, normalized by NO2 mixing ratios and expressed as a conversion frequency (% h−1), showed a clear dependence on j(NO2) with values up to 43% h−1 at noon. We compared our unknown HONO source with values calculated from the measured field data for two recently proposed processes, the light-induced NO2 conversion on soot surfaces and the reaction of electronically excited NO2* with water vapour, with the result that these two reactions normally contributed less than 10% (<1% NO2 + soot + hν; and <10% NO2* + H2O) to our unknown HONO daytime source. OH production from HONO photolysis was found to be larger (by 20%) than the "classical" OH formation from ozone photolysis (O(1D)) integrated over the day.

Validation of longitudinal dynamics of Gatimaan Express model in Matlab/Simulink®

2018 ◽  
Vol 19 (3) ◽  
pp. 307
Author(s):  
Prabin Kumar Jha ◽  
Sadanand Sadashiv Gokhale
Keyword(s):  
Mathematical Model ◽  
Field Data ◽  
Longitudinal Velocity ◽  
Matlab Simulink ◽  
Longitudinal Dynamics ◽  
Research Designs ◽  
Measured Field

This paper presents a mathematical model of longitudinal dynamics of Gatimaan Express. It has one locomotive class WAP5, two generator vans, eight second class chair cars and two executive chair cars respectively. Forces associated with longitudinal dynamics of model are developed in Matlab/Simulink. Longitudinal and coupler forces as well longitudinal velocities are studied during the failure of coupler of 3rd (coach of middle train) second class chair. Validation of longitudinal velocity of the model is done by comparing simulated results with measured field data provided by Research Designs Standards Organization (RDSO), Lucknow, India.

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