Advanced exergy and exergoeconomic analyses of Kalina cycle integrated with parabolic-trough solar collectors

Boyaghchi, Fateme Ahmadi; Sabaghian, Mahboobe

doi:10.24200/sci.2016.3954

Cited by 5 publications

(5 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, in the case of CEAM, improvement priority was given to the condenser, evaporator, and turbine, in order. AEAM results showed that the auxiliary heater and Parabolic-Trough Solar Collectors (PTSC) had the highest improvement priority in a Kalina cycle integrated with PTSC, as reported by Boyaghchi and Sabaghian [22].…”

Section: Introductionsupporting

confidence: 52%

Performance Evaluation of a Kalina Cycle using a Novel Extended Thermodynamic Analysis

Akhondi¹,

Kazemiani‐Najafabadi

Rad

2022

Scientia Iranica

View full text Add to dashboard Cite

This research presents a novel Extended Thermodynamic Analysis Method (ETAM) to respond to the issue of `which equipment holds the highest priority of receiving improvements in a thermodynamic cycle'. This novel analysis comprises three parts: extended energy, extended entropy, and extended exergy analyses. As a case study, a lowtemperature geothermal Kalina cycle system-34 was analyzed. The results of Conventional Exergy Analysis Method (CEAM), Advanced Exergy Analysis Method (AEAM), and the proposed novel method were compared with each other. CEAM results indicate that the condenser, followed by the evaporator and turbine, has the most exergy destruction. In contrast, according to AEAM results, the top priority for improvement should be given to the condenser, followed by turbine and Low-Temperature Recuperator (LTR). The improvement priority using the presented novel extended analysis was also given to the condenser, turbine, and LTR, the nding being the same as the results of AEAM, while the proposed novel method is less complicated than the AEAM.

show abstract

Section: Introductionsupporting

confidence: 52%

Performance Evaluation of a Kalina Cycle using a Novel Extended Thermodynamic Analysis

Akhondi¹,

Kazemiani‐Najafabadi

Rad

2022

Scientia Iranica

View full text Add to dashboard Cite

show abstract

“…The ORC evaporator had the highest value of In Table 16, the highest endogenous exergy destruction cost was due to the steam evaporator (3.26E-03 USD.S −1 ), followed by the ORC turbine (2.95E-03 USD.S −1 ), the steam turbine (1.99E-03 USD.S −1 ) and the steam economizer (1.10E-03 USD.S −1 ), respectively, which indicated that the exergy destruction cost rates of these components were reduced. It was clearly observed that the values of C AV D.K in the steam evaporator and ORC turbine were higher than those in the other components which signified the improvement potentials of these components, while the unavoidable part of exergy destruction cost rates of the steam evaporator and ORC turbine were of a high level, Boyaghchi and Sabaghian [24]. Table 16.…”

Section: Componentmentioning

confidence: 97%

“…This showed that the system components had strong relations. In addition, the economic impact of the avoidable exergy destruction rates was only 23% which meant that the improvement potential of the system was very low, Boyaghchi and Sabaghian [24], Ochoa et al [43]. The results of the advanced exergo-environmental analysis ̇ , for the GPP cycle are presented in Figure 7.…”

Section: Componentmentioning

confidence: 99%

“…In the advanced exergy analysis, efficiencies were increased up to 52.4% and 85.8%, respectively. Boyaghchi and Sabaghian [24] investigated the interaction between the components of a system and the improvement potential using advanced exergy. Results illustrated the avoidable exergy destruction cost rate of 29%, of which 32% belonged to the components and 68% belonged to the interaction between them.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Conventional and Advanced Exergy-Based Analysis of Hybrid Geothermal–Solar Power Plant Based on ORC Cycle

et al. 2020

View full text Add to dashboard Cite

Today, as fossil fuels are depleted, renewable energy must be used to meet the needs of human beings. One of the renewable energy sources is undoubtedly the solar–geothermal power plant. In this paper, the conventional and advanced, exergo-environmental and exergo-economic analysis of a geothermal–solar hybrid power plant (SGHPP) based on an organic Rankin cycle (ORC) cycle is investigated. In this regard, at first, a conventional analysis was conducted on a standalone geothermal cycle (first mode), as well as a hybrid solar–geothermal cycle (second mode). The results of exergy destruction for simulating the standalone geothermal cycle showed that the ORC turbine with 1050 kW had the highest exergy destruction that was 38% of the total share of destruction. Then, the ORC condenser with 26% of the total share of exergy destruction was in second place. In the hybrid geothermal–solar cycle, the solar panel had the highest environmental impact and about 56% of the total share of exergy destruction. The ORC turbine had about 9% of all exergy destruction. The results of the advanced analysis of exergy in the standalone geothermal cycle showed that the avoidable exergy destruction of the condenser was the highest. In the hybrid geothermal–solar cycle, the solar panel, steam economizer and steam evaporator were ranked first to third from an avoidable exergy destruction perspective. The avoidable exergo-economic destruction of the evaporator and pump were higher than the other components. The hybrid geothermal–solar cycle, steam economizer, solar pane and steam evaporator were ranked first to third, respectively, and they could be modified. The avoidable exergo-environmental destruction of the ORC turbine and the ORC pump were the highest, respectively. In the hybrid geothermal–solar cycle, steam economizers, solar panel and steam evaporators had the highest avoidable exergy destruction, respectively. For the standalone geothermal cycle, the total endogenous exergy destruction and exogenous exergy destruction was 83.61% and 16.39%. Moreover, from an exergo-economic perspective, 89% of the total destruction rate was endogenous and 11% was exogenous. From an exergo-environmental perspective, 88.73% of the destruction rate was endogenous and 11.27% was exogenous. For the hybrid geothermal–solar cycle, the total endogenous and exogenous exergy destruction was 75.08% and 24.92%, respectively. Moreover, 81.82% of the exergo-economic destruction rate was endogenous and 18.82% was exogenous. From an exergo-environmental perspective, 81.19% of the exergy destruction was endogenous and 18.81% was exogenous.

show abstract

“…It was reported that the energy plant was practically optimized by implementing the findings of the advanced exergoeconomic analysis. Boyaghchi and Sabaghian [29] evaluated a Kalina cycle plant driven by parabolic trough solar collectors. High exergy and exergy cost losses were discovered to be due to system interactions, with possibilities of avoiding about 84 % of the investment and irreversibility cost rates.…”

Section: Introductionmentioning

confidence: 99%

Modified auxiliary exergy costing in advanced exergoeconomic analysis applied to a hybrid solar-biomass organic Rankine cycle plant

2020

View full text Add to dashboard Cite

This study concerns advanced exergoeconomic analysis of a hybrid solar-biomass organic Rankine cycle (ORC) cogeneration plant. The hybrid plant had been previously conceived as structural optimization scheme to upgrade thermo-economic performance of a real 630 kW solar-ORC plant which currently runs in Ottana, Italy. The irreversibility rates, investment cost rates and irreversibility cost rates were obtained for each system component, based on thermodynamic balance as well as cost balance and auxiliary equations established for the components. Next, the avoidable/unavoidable and exogenous/endogenous splitting options were applied to investigate the sources of thermo-economic losses in the system, the effects of component interactions on the losses, as well as the best approach to improving the system. The main contribution of this paper centers on modification of the traditional auxiliary exergy costing in advanced exergoeconomic methodology, by incorporating stream energy quality into the cost formation process. Results showed that more than 50 % of total irreversibility rates can be avoided in almost all of the components of the hybrid plant, most of which are endogenous. Similarly, it was obtained that component interdependencies have little impact on thermo-economic losses. Specifically, more than 60 % of irreversibility cost rates could be avoidable in the hybrid plant by optimizing internal operations of each of the system components individually. Moreover, results showed that how auxiliary exergy costing is defined in advanced exergoeconomic method plays a significant role on the analysis, and the modified approach presented in this study is a viable choice.

show abstract

Advanced exergy and exergoeconomic analyses of Kalina cycle integrated with parabolic-trough solar collectors

Cited by 5 publications

References 45 publications

Performance Evaluation of a Kalina Cycle using a Novel Extended Thermodynamic Analysis

Performance Evaluation of a Kalina Cycle using a Novel Extended Thermodynamic Analysis

Conventional and Advanced Exergy-Based Analysis of Hybrid Geothermal–Solar Power Plant Based on ORC Cycle

Modified auxiliary exergy costing in advanced exergoeconomic analysis applied to a hybrid solar-biomass organic Rankine cycle plant

Contact Info

Product

Resources

About