Operational optimization in simple tri-generation systems

Ünal, Ali Nadi; Ersoz, Ibrahim; Kayakutlu, Gülgün

doi:10.1016/j.applthermaleng.2016.06.059

Cited by 21 publications

(6 citation statements)

References 35 publications

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“…Borg and Kelly [12], and Marimón et al, [13]. Ali Nadi Unal et al [14] proposed an optimization methodology for trigeneration system. Giovanni Angrisani et al [15] went through various methods used by researchers to analyze polygeneration systems.…”

Section: Simulation Based Studiesmentioning

confidence: 99%

Trigeneration Systems: A Review

Bagade¹,

Rampure²,

Shelar³

et al. 2019

IJRAT

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Trigeneration is combined generation of electricity, heat and cooling energy is being possible because of the commercial availability of absorption chillers. The components of trigeneration systems are prime movers i.e. diesel generator or natural gas engine, waste heat recovery boiler and vapour absorption system. Sizing of trigeneration systems is about selecting the trigeneration configuration and its system components and arriving at their capacities. Many studies were analysis studies and they do not size the system components. They restrict themselves to one or other kind of analysis thereby limiting their applicability. The first law analysis and economic analysis of trigeneration systems are the basic tools, evolved methods like exergy analysis and thermoeconomics analysis are being more rigorously applied. Some studies gives Environmental concerns like emissions. This paper reviews recent literature about trigeneration systems in which physical trigeneration systems are analysed and reports the analysis tools employed.

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Section: Simulation Based Studiesmentioning

confidence: 99%

Trigeneration Systems: A Review

Bagade¹,

Rampure²,

Shelar³

et al. 2019

IJRAT

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“…They found that in extremely hot and humid weather, Stirling-CCHP system is not recommended. Ünal et al [8] proposed a linear optimization model to minimize maintenance cost. The optimization procedure was held by comparing four different kinds of prime movers for three different load conditions of an industrial facility.…”

Section: Introductionmentioning

confidence: 99%

Selection of prime mover to meet heating demand of a single effect absorption chiller based on laws of thermodynamics

et al. 2021

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In this study the first and the second laws of thermodynamics are evaluated for a single effect absorption chiller. Entropy generation and COP are selected as the objective functions and their variations are studied by varying the generator temperature for various condensing temperatures. For this purpose, the enthalpy and the entropy data of the super-heated steam, saturated steam and the saturated water are formulated in the mathematical equations. Also to provide the required steam of generator, prime mover in the form of internal combustion engine is applied and its partial load conditions are analyzed. A residential tower is considered as the case study for selecting the proper prime mover capacity. The number of prime movers is estimated based on the required heating power of the generator steam for each partial load. It is seen, the entropy generation would be decreased rapidly by increasing the generator temperature and after a while, the entropy generation would be approximately constant. The optimum entropy generation for each condensing temperature and the generator temperature may be decreased by increasing the evaporator temperature. It is deduced that COP is increased rapidly by increasing the generator temperature but in the following, the COP will be constant. The maximum amount of COP is decreased by increasing the condensing temperature. Also the COP is increased by increasing evaporator temperature for a certain generator and condensing temperatures.

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“…Disregarding uncertainty effects on the system design and operation could lead to suboptimal solutions, in which the impaired economic and energy performances would not provide longstanding economic viability nor reduce financial risks. Nevertheless, most of the research about the optimal design of cogeneration and polygeneration systems still relies on deterministic approaches that cannot capture the stochastic nature of uncertain design parameters [1,2,[10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Stochastic optimization of trigeneration systems for decision-making under long-term uncertainty in energy demands and prices

Onishi

Antunes

Fraga

et al. 2019

Energy

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Combined heating, cooling and power (CHCP) systems, so-called trigeneration, are widely accepted as more energy-efficient and environment-friendly alternatives to traditional separate energy generation. Nevertheless, the tasks of synthesis and optimization of trigeneration systems are strongly hampered by the long-term uncertainties in energy demands and prices. In this work, we introduce a new scenariobased model for the stochastic optimization of CHCP systems under uncertainty in several process design parameters. Energy generation operators are proposed to ensure the optimal sizing and operation of each equipment in each optimization scenario. Our main objective is to enhance energy efficiency by synthesizing the most cost-effective CHCP system able to operate in wide-ranging scenarios of energy demands and prices. For this purpose, uncertain design parameters are modelled as a set of loading and pricing scenarios with given probability of occurrence. The set of scenarios contains correlated energy prices described through a multivariate Normal distribution, which are generated via a Monte Carlo sampling technique with symmetric correlation matrix. The resulting stochastic multiscenario MINLP model is solved to global optimality by minimizing the expected total annualized cost. A thorough economic risk analysis underlines the effectiveness of the proposed methodology. This systematic approach represents a useful tool to support the decision-making process regarding system efficiency and robustness.

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Operational optimization in simple tri-generation systems

Cited by 21 publications

References 35 publications

Trigeneration Systems: A Review

Trigeneration Systems: A Review

Selection of prime mover to meet heating demand of a single effect absorption chiller based on laws of thermodynamics

Stochastic optimization of trigeneration systems for decision-making under long-term uncertainty in energy demands and prices

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