The Optimal Selection of Capacity Sizing and Operational Strategy of CHP System for Public Buildings with Novel Heat Trading Using Local Thermal Storage

Combined Heat and Power (CHP) systems have many economical and environmental benefits. Generally, selection of these systems is performed using the time-dependent curves of the required electricity and heating load during a year. In the selection of a CHP system, the operation of this system at off-design point also should be studied. In this paper, a method for selecting the number of prime movers, and determining their nominal power and operational strategy considering specific electrical and heating loads is presented. Three types of prime movers which are studied in this paper are gas turbine, diesel engine, and gas engine. Selecting the number of each type of prime mover and determining their nominal power as well as the operational strategy are presented here. Ambient conditions and electricity and heating load curves are assumed as known parameters. Parameters such as engine thermal efficiency, exhaust gas temperature, mass flow rate of fuel and exhaust gases are computed for three types of prime movers. After determining the optimum value of number and nominal power of prime mover(s), the operational strategy of each type of prime mover in CHP system is analyzed.

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Optimal selection of sensor network and backed-off operating point based on economics

2013 European Control Conference (ECC) ◽

10.23919/ecc.2013.6669516 ◽

2013 ◽

Author(s):

Nabil Magbool Jan ◽

Sigurd Skogestad ◽

Sridharakumar Narasimhan

Keyword(s):

Sensor Network ◽

Operating Point ◽

Optimal Selection ◽

Selection Of

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Application of L6 Orthogonal Array for Optimal Selection of Some Process Parameters in GMAW Process

Indian Welding Journal ◽

10.22486/iwj.v45i4.141203 ◽

2012 ◽

Vol 45 (4) ◽

pp. 41 ◽

Cited By ~ 1

Author(s):

M. K. Saha ◽

Santanu Das ◽

A. Bandyopadhyay ◽

S. Bandyopadhyay

Keyword(s):

Process Parameters ◽

Orthogonal Array ◽

Optimal Selection ◽

Selection Of

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Application of L6 Orthogonal Array for Optimal Selection of Some Process Parameters in GMAW Process

Indian Welding Journal ◽

10.22486/iwj/2012/v45/i4/141203 ◽

2012 ◽

Vol 45 (4) ◽

pp. 41

Author(s):

M. K. Saha ◽

Santanu Das ◽

A. Bandyopadhyay ◽

S. Bandyopadhyay

Keyword(s):

Process Parameters ◽

Orthogonal Array ◽

Optimal Selection ◽

Selection Of

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Design and implementation of an ADC-based real-time simulator along with an optimal selection of the switch model parameters

Electrical Engineering ◽

10.1007/s00202-021-01237-1 ◽

2021 ◽

Author(s):

Morteza Rezaei Larijani ◽

Mohammad Reza Zolghadri

Keyword(s):

Real Time ◽

Model Parameters ◽

Optimal Selection ◽

Design And Implementation ◽

Selection Of

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Methodology for Determining the Location of River Ports on a Modernized Waterway Based on Non-Cost Criteria: A Case Study of the Odra River Waterway

Sustainability ◽

10.3390/su13063571 ◽

2021 ◽

Vol 13 (6) ◽

pp. 3571

Author(s):

Bogusz Wiśnicki ◽

Dorota Dybkowska-Stefek ◽

Justyna Relisko-Rybak ◽

Łukasz Kolanda

Keyword(s):

Large Scale ◽

Multicriteria Decision Making ◽

Research Process ◽

Optimal Selection ◽

Investment Projects ◽

Odra River ◽

Research Problems ◽

Selection Of ◽

Construction Works

The paper responds to research problems related to the implementation of large-scale investment projects in waterways in Europe. As part of design and construction works, it is necessary to indicate river ports that play a major role within the European transport network as intermodal nodes. This entails a number of challenges, the cardinal one being the optimal selection of port locations, taking into account the new transport, economic, and geopolitical situation that will be brought about by modernized waterways. The aim of the paper was to present an original methodology for determining port locations for modernized waterways based on non-cost criteria, as an extended multicriteria decision-making method (MCDM) and employing GIS (Geographic Information System)-based tools for spatial analysis. The methodology was designed to be applicable to the varying conditions of a river’s hydroengineering structures (free-flowing river, canalized river, and canals) and adjustable to the requirements posed by intermodal supply chains. The method was applied to study the Odra River Waterway, which allowed the formulation of recommendations regarding the application of the method in the case of different river sections at every stage of the research process.

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Optimal Selection of Conductors in Three-Phase Distribution Networks Using a Discrete Version of the Vortex Search Algorithm

Computation ◽

10.3390/computation9070080 ◽

2021 ◽

Vol 9 (7) ◽

pp. 80

Author(s):

John Fernando Martínez-Gil ◽

Nicolas Alejandro Moyano-García ◽

Oscar Danilo Montoya ◽

Jorge Alexander Alarcon-Villamil

Keyword(s):

Objective Function ◽

Power Flow ◽

Phase Distribution ◽

Search Algorithm ◽

Distribution Networks ◽

Discrete Version ◽

Optimal Selection ◽

Flow Method ◽

Three Phase ◽

Selection Of

In this study, a new methodology is proposed to perform optimal selection of conductors in three-phase distribution networks through a discrete version of the metaheuristic method of vortex search. To represent the problem, a single-objective mathematical model with a mixed-integer nonlinear programming (MINLP) structure is used. As an objective function, minimization of the investment costs in conductors together with the technical losses of the network for a study period of one year is considered. Additionally, the model will be implemented in balanced and unbalanced test systems and with variations in the connection of their loads, i.e., Δ− and Y−connections. To evaluate the costs of the energy losses, a classical backward/forward three-phase power-flow method is implemented. Two test systems used in the specialized literature were employed, which comprise 8 and 27 nodes with radial structures in medium voltage levels. All computational implementations were developed in the MATLAB programming environment, and all results were evaluated in DigSILENT software to verify the effectiveness and the proposed three-phase unbalanced power-flow method. Comparative analyses with classical and Chu & Beasley genetic algorithms, tabu search algorithm, and exact MINLP approaches demonstrate the efficiency of the proposed optimization approach regarding the final value of the objective function.

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