The improved distribution method of negentropy and performance evaluation of CCPPs based on the structure theory of thermoeconomics

Li, Hongkun; Chen, Jianhong; De-ren, Sheng; Li, Wei

doi:10.1016/j.applthermaleng.2015.11.052

Cited by 15 publications

(10 citation statements)

References 28 publications

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“…Thermoeconomic structural theory uses physical and production structure diagrams to establish a system of product cost calculation model equations through system analysis in order to calculate product cost distribution [11]. This paper builds on the thermoeconomic model based on the thermoeconomic structural theory in order to make a reasonable evaluation of the economic operation of the thermal system.…”

Section: Unit Thermoeconomic Cost Modelingmentioning

confidence: 99%

“…Thermoeconomics is a cross-discipline that combines thermodynamics and economics. Not only can it calculate the efficiency of the system from a local perspective and determine the number and distribution of the irreversible losses of each component in the unit, it can also can calculate and analyze the production costs of each component of the unit, so as to price the products and control the fuel consumption and equipment investment costs of each component of the unit [11]. The concept of thermoeconomics was first proposed by Tribus and Evans [12,13] in the exergy cost calculation of the desalination process in 1962.…”

Section: Introductionmentioning

confidence: 99%

“…Valero et al [14] defined the conceptions of the fuel and products of each component of the unit in the production structure diagram and proposed the principles and methods of introducing auxiliary equations. Hunkun Li et al [11] established the thermoeconomic model of a CCGT to calculate the non-energy costs of each component in the system. Carlo et al [15] used the thermoeconomic analysis method to study the effects of steam pressure on the CCGT performance.…”

Section: Introductionmentioning

confidence: 99%

“…The current thermoeconomic optimization of the CCGT system mainly focuses on a certain GT operation strategy [11,15], and the system performances under different GT operation strategies are only analyzed by using the thermoeconomic method [17]. There is no literature on the optimization of the thermoeconomic performance of the system under different GT operation strategies.…”

Section: Introductionmentioning

confidence: 99%

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Thermoeconomic Optimization of Steam Pressure of Heat Recovery Steam Generator in Combined Cycle Gas Turbine under Different Operation Strategies

Wang

Duan

2021

Energies

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The optimization of the steam parameters of the heat recovery steam generators (HRSG) of Combined Cycle Gas Turbines (CCGT) has become one of the important means to reduce the power generation cost of combined cycle units. Based on the structural theory of thermoeconomics, a thermoeconomic optimization model for a triple pressure reheat HRSG is established. Taking the minimization of the power generation cost of the combined cycle system as the optimization objective, an optimization algorithm based on three factors and six levels of orthogonal experimental samples to determine the optimal solution for the high, intermediate and low pressure steam pressures under different gas turbine (GT) operation strategies. The variation law and influencing factors of the system power generation cost with the steam pressure level under all operation strategies are analyzed. The research results show that the system power generation cost decreases as the GT load rate increases, T4 plays a dominant role in the selection of the optimal pressure level for high pressure (HP) steam and, in order to obtain the optimum power generation cost, the IGV T3-650-F mode should be adopted to keep the T4 at a high level under different GT load rates.

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Section: Unit Thermoeconomic Cost Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermoeconomic Optimization of Steam Pressure of Heat Recovery Steam Generator in Combined Cycle Gas Turbine under Different Operation Strategies

Wang

Duan

2021

Energies

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“…The method is widely applied in different processes and systems (Balli, Aras & Hepbasli, 2010;Lozano, Carvalho & Serra, 2011;Kaviri, Jaafar & Lazim, 2012;Ghazi, Ahmadi, Sotoodeh & Taherkhani, 2012;Gungor, Erbay, & Hepbasli, 2012;Flórez-Orrego, Silva, & Oliveira Jr., 2014). Some recent works attempt to solve the major issues still considered opened on thermoeconomics, especially regarding the dissipative equipment, as valves and condensers (Agudelo, Valero & Torres, 2012;Piacentino & Talamo, 2013;Luo et al, 2014;Li, Chen, Sheng, & Li, 2016).…”

Section: Introductionmentioning

confidence: 99%

Thermoeconomic analysis for a trigeneration system in a soluble coffee industry

2019

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Considering that a trigeneration system tends to result in higher thermal efficiency than electricity, heating and cooling generation in separated ways, the purpose of this study is to perform a thermoeconomic analysis of a trigeneration system in a soluble coffee industry in order to improve its energy and economic performance. The current thermal system has a steam generator that provides heating utility for the soluble coffee production, including a refrigeration plant using ammonia/water absorption, while the electricity is bought from the energy concessionary. The proposal is to include an extraction-condensing steam turbine providing 5100 kW of electricity to the industrial plant, besides keeping the same energy demands in the current plant. Heat, cold and power were evaluated for their costs per unit of exergy in the current plant and compared to the proposal of the trigeneration system. The results show that the proposal to integrate a turbo-generator is technically and economically viable, resulting in reduction in the costs for heating, cooling and electricity of up to 72% in a payback period of only 24 months.

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Environmental thermoeconomic performance analysis of gas turbine combined cycle under off‐design conditions

Wang

Duan

Zhang

2022

Energy Science & Engineering

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Although the gas turbine combined cycle (GTCC) system has better environmental performance, it still emits pollution gases such as CO 2 and NOx. It is reasonable and necessary to add the environmental cost to the power production cost of the GTCC system. Based on the structure theory of thermoeconomics, through the reasonable pricing of pollutants (considering the environmental costs of CO 2 and NOx emission), the system environmental thermoeconomic cost (ETC) model is developed in this study, which achieves absolute internalization of environmental costs. Taking GTCC with different gas turbine (GT) operation strategies as the research object, the influences of different operation strategies and environmental conditions on the GTCC system ETC are studied. The results of this study show that it is beneficial to maintain higher turbine inlet temperatures (T 3 ) and turbine outlet temperatures (T 4 ), thus ensuring better GTCC environmental thermoeconomic performance, and GTCC with the operation strategy (using inlet guide vane (IGV) control to maintain T 3 at the design value and then to keep T 4 at its maximum value (IGVT3-650-F) has the lowest ETC, which are 0.09429 $/ kW•h at 75% gas turbine load rate (GTLR) and 0.10079 $/kW•h at 50% GTLR, respectively; reducing the emission of pollutants can reduce the unit ETC; for the combustion chamber, as the pollutant generation component of GTCC unit, it is most affected by the environmental damage cost; reducing the inlet air temperature can improve the system environmental thermoeconomic performance.

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The improved distribution method of negentropy and performance evaluation of CCPPs based on the structure theory of thermoeconomics

Cited by 15 publications

References 28 publications

Thermoeconomic Optimization of Steam Pressure of Heat Recovery Steam Generator in Combined Cycle Gas Turbine under Different Operation Strategies

Thermoeconomic Optimization of Steam Pressure of Heat Recovery Steam Generator in Combined Cycle Gas Turbine under Different Operation Strategies

Thermoeconomic analysis for a trigeneration system in a soluble coffee industry

Environmental thermoeconomic performance analysis of gas turbine combined cycle under off‐design conditions

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