Comprehensive analysis of energy, exergy and exergo-economic of cogeneration of heat and power in a combined gas turbine and organic Rankine cycle

Khaljani, M.; Saray, Rahim Khoshbakhti; Bahlouli, Keyvan

doi:10.1016/j.enconman.2015.02.067

Cited by 269 publications

(86 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…An increasing amount of researchers estimate the costs of components based on equipment correlations, using either percentages ( [32]) or multiplication factors ( [33][34][35]) to estimate the total project costs based on the module/equipment costs. Techno-economic ( [22,[36][37][38][39][40][41]) as well as thermo-or exergoeconomic ( [33,[42][43][44]) methods are used to simultaneously analyze technical and economic aspects and tradeoffs. Figure 1 displays a review of published data on estimated ORC investment costs.…”

Section: Orc Investment Costs: a Brief Literature Reviewmentioning

confidence: 99%

Cost Engineering Techniques and Their Applicability for Cost Estimation of Organic Rankine Cycle Systems

Lemmens

2016

Energies

120

View full text Add to dashboard Cite

Abstract:The potential of organic Rankine cycle (ORC) systems is acknowledged by both considerable research and development efforts and an increasing number of applications. Most research aims at improving ORC systems through technical performance optimization of various cycle architectures and working fluids. The assessment and optimization of technical feasibility is at the core of ORC development. Nonetheless, economic feasibility is often decisive when it comes down to considering practical instalments, and therefore an increasing number of publications include an estimate of the costs of the designed ORC system. Various methods are used to estimate ORC costs but the resulting values are rarely discussed with respect to accuracy and validity. The aim of this paper is to provide insight into the methods used to estimate these costs and open the discussion about the interpretation of these results. A review of cost engineering practices shows there has been a long tradition of industrial cost estimation. Several techniques have been developed, but the expected accuracy range of the best techniques used in research varies between 10% and 30%. The quality of the estimates could be improved by establishing up-to-date correlations for the ORC industry in particular. Secondly, the rapidly growing ORC cost literature is briefly reviewed. A graph summarizing the estimated ORC investment costs displays a pattern of decreasing costs for increasing power output. Knowledge on the actual costs of real ORC modules and projects remains scarce. Finally, the investment costs of a known heat recovery ORC system are discussed and the methodologies and accuracies of several approaches are demonstrated using this case as benchmark. The best results are obtained with factorial estimation techniques such as the module costing technique, but the accuracies may diverge by up to +30%. Development of correlations and multiplication factors for ORC technology in particular is likely to improve the quality of the estimates.

show abstract

Section: Orc Investment Costs: a Brief Literature Reviewmentioning

confidence: 99%

Cost Engineering Techniques and Their Applicability for Cost Estimation of Organic Rankine Cycle Systems

Lemmens

2016

Energies

120

View full text Add to dashboard Cite

show abstract

“…In comparison with the ST cycle (850K), the GT cycle can work at a higher temperature of (1100k to 1800K) [20,21]. By increasing the maximum temperature (turbine inlet temperature) of heat addition in the thermal cycle, working with low temperature of heat rejection or both, the thermal efficiency of any power plant cycle as a thermodynamic performance can be enhanced [22][23][24]. In the CCPP, the GT cycle works at a higher turbine inlet temperature and is linked with an ST cycle that operates at a lower temperature scale [14,25,26].…”

Section: Introductionmentioning

confidence: 99%

Effects of cycle peak temperature ratio on the performance of combined cycle power plant

Ibrahim¹,

Rahman²

2016

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

Combined cycle power plant (CCPP) is currently the most promising technology to generate power at higher plant thermal efficiencies. The effects of the cycle peak temperature ratio on the improvement of the performance of the combined cycle power plant had been proposed. The MATLAB code was developed to utilize the performance of the CCPP. The results of this study showed that the overall thermal efficiency increased with the increase of cycle peak temperature ratio and decreased with the increase of air fuel ratio. Also, the increase of the cycle peak temperature ratio as well as the increase of the isentropic compressor efficiency led to the increase of the total power output. The thermal efficiencies for CCPP were higher compared to the gas turbine power plant.

show abstract

“…All exergy additions and removals to a sub-component are considered as the fuel (F ) and product (P ), respectively. As a result, the cost balance and auxiliary equations for each part are written as [8]:…”

Section: System Description and Thermoeconomic Analysesmentioning

confidence: 99%

“…Khaljani et al [8] performed a thermodynamic, exergoeconomic and environmental assessment of a cogeneration of heat and power cycle (CHP), considering three objective functions of first and second law efficiencies and the total cost rates of the system. It resulted that the (513) maximal exergy destruction rate took place in the combustion chamber, and after that in heat recovery steam generator and gas turbine, respectively.…”

Section: Introductionmentioning

confidence: 99%

Thermoeconomic Analysis and Assessment of Gaziantep Municipal Solid Waste Power Plant

2017

View full text Add to dashboard Cite

This paper presents a thermoeconomic analysis and assessment of a municipal solid waste power plant system in Gaziantep. The operation of an existing municipal solid waste power plant is described in detail and a thermoeconomical methodology based on exergoeconomic relations and specific exergy costing (SPECO) method is provided to allocate cost flows through subcomponents of the plant. SPECO method is based on a step by step procedure which begins from identification of energy and exergy values of all states defined in the present system through fuel (F ) and product (P ) approach and ends at the point of establishing related exergy based cost balance equations together with auxiliary equations. The actual exergy efficiency of the solid waste power plant is determined to be 47.84% which shows that 52.16% of the total exergy input to the plant is destroyed. The net electrical power output of the Gaziantep municipal solid waste power plant is 5.655 MW. The total cost rate of the power plant is evaluated as 18.44$/h as a result of thermoeconomic analyses.

show abstract

Comprehensive analysis of energy, exergy and exergo-economic of cogeneration of heat and power in a combined gas turbine and organic Rankine cycle

Cited by 269 publications

References 31 publications

Cost Engineering Techniques and Their Applicability for Cost Estimation of Organic Rankine Cycle Systems

Cost Engineering Techniques and Their Applicability for Cost Estimation of Organic Rankine Cycle Systems

Effects of cycle peak temperature ratio on the performance of combined cycle power plant

Thermoeconomic Analysis and Assessment of Gaziantep Municipal Solid Waste Power Plant

Contact Info

Product

Resources

About