Energy, economic and environmental (3E) aspects of internal heat exchanger for ORC geothermal power plants

Bina, Saeid Mohammadzadeh; Jalilinasrabady, Saeid; Fujii, Hikari

doi:10.1016/j.energy.2017.09.045

Cited by 55 publications

(12 citation statements)

References 44 publications

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“…In particular, a great amount of energy and techno-economic analysis and optimisation approaches are usually proposed for medium and large-scale geothermal power plants (electric power higher than 200 kW el ) and for different system arrangements [37,42,43]. The objective functions combine energy parameters (i.e., first and second law analysis [44][45][46], electric power [41], heat exchanger areas [44,47], etc.) and economic purposes (e.g., specific cost of investment and levelized cost of energy, energy production cost [48][49][50]).…”

Section: Introductionmentioning

confidence: 99%

Integrated Geothermal Energy Systems for Small-Scale Combined Heat and Power Production: Energy and Economic Investigation

Morrone

Algieri

2020

Applied Sciences

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In recent years, an increasing interest in geothermal energy has been registered in both the scientific community and industry. The present work aims to analyse the energy performance and the economic viability of an innovative high-efficiency geothermal-driven integrated system for a combined heat and power (CHP) application. The system consists of a heat exchanger (HEX) and a transcritical organic Rankine cycle (ORC) that work in parallel to exploit a high-temperature geothermal source (230 °C) and satisfy the energy demand of a commercial centre located in Southern Italy. The ORC and HEX sub-units can operate at partial load to increase the system flexibility and to properly react to continuous changes in energy request. A lumped model was developed to find the proper operating conditions and to evaluate the energy production on an hourly basis over the whole year. In particular, a multi-variable optimisation was implemented to find the most suitable configuration and a 101.4 kWel ORC was selected while the HEX nominal power was 249.5 kWth. The economic viability of the integrated system was evaluated in terms of net present value and payback period and different operating strategies were compared: thermal-driven, electric-driven, and a mixed strategy. The latter turned out to be the best solution according to both energy and economic criteria, with electric and thermal self-consumptions larger than 90%, with no heat dumping and a payback time close to five years.

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Section: Introductionmentioning

confidence: 99%

Integrated Geothermal Energy Systems for Small-Scale Combined Heat and Power Production: Energy and Economic Investigation

Morrone

Algieri

2020

Applied Sciences

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“…The specifications of ORC presented in that reference are inserted into the procedure of the ORC. Figure 2 shows the comparison between electrical power production by the ORC versus evaporator pressure of the model and Mohammadzadeh Bina et al 70 The root mean square error (RMSE) is around 3.9%. The source of error is related to pressure losses in the system, as well as the minor difference between calculations of physical properties.…”

Section: Discussion Of Resultsmentioning

confidence: 99%

“…For validation of the ORC, the study of Mohammadzadeh Bina et al 70 is considered. The specifications of ORC presented in that reference are inserted into the procedure of the ORC.…”

Section: Discussion Of Resultsmentioning

confidence: 99%

Performance assessment of biomass–geothermal configuration energy resources for cooling and power generation

Yao

Ehyaei

et al. 2022

Energy Science & Engineering

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The emission of greenhouse gases from fossil fuels is the main environmental impact of energy resources. Moving toward the use of renewable energy resources is the only solution to tackle these problems. In this paper, a configuration of the hybrid biomass and geothermal energy resource is examined for cooling and electricity generation. In this study, water as a geothermal working fluid is heated up due to combustion of syngas produced in a digester and produce power in a steam turbine. So, the remaining heat of this geofluid runs an absorption chiller for cooling production. The results reveal that the energy and exergy efficiencies of this proposed cycle are 30.8% and 15.5%, respectively. Moreover, the economic analysis of this cycle concludes that the payback period is 2.8 years and the simple payback period for this configuration is 2.6 years. Moreover, the highest exergy destruction rate of 52.4% belongs to the absorption refrigeration cycle. Whereas the lowest exergy destruction of the steam line is the lowest value of 17.4%.

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“…The two mentioned GPPs are the conventional types; however, several enhancements have been done to these cycles to improve the overall efficiency of the system. Adding internal heat exchangers is one of these techniques which can be considered as a heat recovery subsystem [72]. In GPPs, there are two types of internal heat exchangers' incorporations, namely, recuperator and regenerator.…”

Section: Geothermal Energymentioning

confidence: 99%

A review of geothermal energy-driven hydrogen production systems

Mahmoud

Ramadan

Naher

et al. 2021

Thermal Science and Engineering Progress

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Energy, economic and environmental (3E) aspects of internal heat exchanger for ORC geothermal power plants

Cited by 55 publications

References 44 publications

Integrated Geothermal Energy Systems for Small-Scale Combined Heat and Power Production: Energy and Economic Investigation

Integrated Geothermal Energy Systems for Small-Scale Combined Heat and Power Production: Energy and Economic Investigation

Performance assessment of biomass–geothermal configuration energy resources for cooling and power generation

A review of geothermal energy-driven hydrogen production systems

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