Letteratura scientifica selezionata sul tema "Trigeneration plants"
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Articoli di riviste sul tema "Trigeneration plants"
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Jamaluddin, Khairulnadzmi, Sharifah Rafidah Wan Alwi, Khaidzir Hamzah e Jiří Jaromír Klemeš. "A Numerical Pinch Analysis Methodology for Optimal Sizing of a Centralized Trigeneration System with Variable Energy Demands". Energies 13, n. 8 (19 aprile 2020): 2038. http://dx.doi.org/10.3390/en13082038.
Testo completoAbstract (sommario):
The energy and power sectors are critical sectors, especially as energy demands rise every year. Increasing energy demand will lead to an increase in fuel consumption and CO2 emissions. Improving the thermal efficiency of conventional power systems is one way to reduce fuel consumption and carbon emissions. The previous study has developed a new methodology called Trigeneration System Cascade Analysis (TriGenSCA) to optimise the sizing of power, heating, and cooling in a trigeneration system for a Total Site system. However, the method only considered a single period on heating and cooling demands. In industrial applications, there are also batches, apart from continuous plants. The multi-period is added in the analysis to meet the time constraints in batch plants. This paper proposes the development of an optimal trigeneration system based on the Pinch Analysis (PA) methodology by minimizing cooling, heating, and power requirements, taking into account energy variations in the total site energy system. The procedure involves seven steps, which include data extraction, identification of time slices, Problem Table Algorithm, Multiple Utility Problem Table Algorithm, Total Site Problem Table Algorithm, TriGenSCA, and Trigeneration Storage Cascade Table (TriGenSCT). An illustrative case study is constructed by considering the trigeneration Pressurized Water Reactor Nuclear Power Plant (PWR NPP) and four industrial plants in a Total Site system. Based on the case study, the base fuel of the trigeneration PWR NPP requires 14 t of Uranium-235 to an average demand load of 93 GWh/d. The results of trigeneration PWR NPP with and without the integration of the Total Site system is compared and proven that trigeneration PWR NPP with integration is a suitable technology that can save up to 0.2% of the equivalent annual cost and 1.4% of energy compared to trigeneration PWR NPP without integration.
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Underwood, Chris, Bobo Ng e Francis Yik. "Scheduling of Multiple Chillers in Trigeneration Plants". Energies 8, n. 10 (7 ottobre 2015): 11095–119. http://dx.doi.org/10.3390/en81011095.
Testo completo
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Jamaluddin, Khairulnadzmi, Sharifah Rafidah Wan Alwi, Zainuddin Abd Manan, Khaidzir Hamzah e Jiri Jaromir Klemeš. "Optimal Sizing of a Trigeneration Plant Integrated with Total Site System Considering Multi-period and Energy Losses". E3S Web of Conferences 287 (2021): 03014. http://dx.doi.org/10.1051/e3sconf/202128703014.
Testo completoAbstract (sommario):
Rising awareness for the environment as well as concerns over the sustainability of fossil fuels has encouraged developed and developing countries to find alternative ways to enhance the thermal efficiency of current power systems. The thermal efficiency of power plants can be increased from 30 – 40 % up to 80 – 90 % through the implementation of a trigeneration system by recovering dissipated waste heat for other purposes. The trigeneration system can be defined as a technology that can produce simultaneous power, heating, and cooling energy from the same fuel source. Trigeneration System Cascade Analysis (TriGenSCA) methodology is an optimisation approach based on Pinch Analysis that has been used to establish the guidelines or the proper size of the trigeneration system. This paper proposes a modification of TriGenSCA by considering a multi-period of energy consumption to optimise the size of the utility in the centralised trigeneration system by considering the transmission and storage of energy losses in the Total Site system. There are six steps involved including data extraction, identification of time slices, Problem Table Algorithm (PTA), Multiple Utility Problem Table Algorithm (MU PTA), Total Site Problem Table Algorithm (TS PTA), and modified TriGenSCA. The methodology has been tested on the centralised nuclear trigeneration system in a Total Site System as a case study and results shown that thermal energy needed by the Pressurized Water Reactor (PWR) trigeneration system with transmission losses is 2,427 MW whereas thermal energy needed by the PWR trigeneration system without transmission losses is 2,424 MW. The TriGenSCA with consideration of transmission and storage energy losses is useful for engineers and designers to determine the exact value of energy for trigeneration plant.
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Rojas Suarez, Jhan Piero, Mawency Vergel Ortega e Sofia Orjuela Abril. "Application of cogeneration and trigeneration systems". Revista Boletín Redipe 10, n. 5 (1 maggio 2021): 259–72. http://dx.doi.org/10.36260/rbr.v10i5.1302.
Testo completoAbstract (sommario):
The improvement in the energy efficiency of a thermoelectric power station and the implementation of cogeneration and trigeneration plants have great potential to mitigate the effects of energy consumption and its impact on the global problem of climate change. Public environmental policies in the Latin American context implement the use of unconventional energy sources through different mechanisms. This research identifies environmental policies focusing on the application of alternative cogeneration and trigeneration systems. To promote the application of these systems, each country presents tax incentives and the generation of programs. In Latin America, the country with the highest participation in cogeneration plants in Brazil, due to government support to eliminate barriers to the sale of surplus energy, and the strengthening of programs such as PROINFA. On the other hand, we have Chile, Peru, and Colombia, in which it shows government barriers to be able to sell the energy surpluses that are generated in cogeneration plants and so far maintain little participation in the generation of electrical energy from unconventional sources. In Colombia, it presents regulatory conditions for the electricity grid, which restricts the participation of “small energy generators.” However, in recent years, there has been greater participation in the energy matrix based on clean energy. The foregoing will allow recognizing the progress of the use of renewable energies in Colombia, specifically of the cogeneration plants, which is an estimated expansion of installed capacity of 314 MW.
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Klimenko, A. V., V. S. Agababov, I. P. Il’ina, V. D. Rozhnatovskii e A. V. Burmakina. "Layouts of trigeneration plants for centralized power supply". Thermal Engineering 63, n. 6 (24 maggio 2016): 414–21. http://dx.doi.org/10.1134/s0040601516060045.
Testo completo
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Rocha, M. S., R. Andreos e J. R. Simões-Moreira. "Performance tests of two small trigeneration pilot plants". Applied Thermal Engineering 41 (agosto 2012): 84–91. http://dx.doi.org/10.1016/j.applthermaleng.2011.12.007.
Testo completo
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Jamaluddin, Khairulnadzmi, Sharifah Rafidah Wan Alwi, Zainuddin Abdul Manan, Khaidzir Hamzah e Jiří Jaromír Klemeš. "A Process Integration Method for Total Site Cooling, Heating and Power Optimisation with Trigeneration Systems". Energies 12, n. 6 (16 marzo 2019): 1030. http://dx.doi.org/10.3390/en12061030.
Testo completoAbstract (sommario):
Research and development on integrated energy systems such as cogeneration and trigeneration to improve the efficiency of thermal energy as well as fuel utilisation have been a key focus of attention by researchers. Total Site Utility Integration is an established methodology for the synergy and integration of utility recovery among multiple processes. However, Total Site Cooling, Heating and Power (TSCHP) integration methods involving trigeneration systems for industrial plants have been much less emphasised. This paper proposes a novel methodology for developing an insight-based numerical Pinch Analysis technique to simultaneously target the minimum cooling, heating and power requirements for a total site energy system. It enables the design of an integrated centralised trigeneration system involving several industrial sites generating the same utilities. The new method is called the Trigeneration System Cascade Analysis (TriGenSCA). The procedure for TriGenSCA involves data extraction, constructions of a Problem Table Algorithm (PTA), Multiple Utility Problem Table Algorithm (MU PTA), Total Site Problem Table Algorithm (TS PTA) and estimation of energy sources by a trigeneration system followed by construction of TriGenSCA, Trigeneration Storage Cascade Table (TriGenSCT) and construction of a Total Site Utility Distribution (TSUD) Table. The TriGenSCA tool is vital for users to determine the optimal size of utilities for generating power, heating and cooling in a trigeneration power plant. Based on the case study, the base fuel source for power, heating and cooling is nuclear energy with a demand load of 72 GWh/d supplied by 10.8 t of Uranium-235. Comparison between conventional PWR producing power, heating and cooling seperately, and trigeneration PWR system with and without integration have been made. The results prove that PWR as a trigeneration system is the most cost-effective, enabling 28% and 17% energy savings as compared to conventional PWR producing power, heating and cooling separately.
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Stojiljković, Mirko, Mladen Stojiljković e Bratislav Blagojević. "Multi-Objective Combinatorial Optimization of Trigeneration Plants Based on Metaheuristics". Energies 7, n. 12 (22 dicembre 2014): 8554–81. http://dx.doi.org/10.3390/en7128554.
Testo completo
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Kulichikhin, V. V. "On violations of the Charter of the Russian Academy of Sciences (RAS)". Safety and Reliability of Power Industry 13, n. 2 (31 luglio 2020): 119–27. http://dx.doi.org/10.24223/1999-5555-2020-13-2-119-127.
Testo completoAbstract (sommario):
24.07.2016 a large group of academicians of the Russian Academy of Sciences (RAS) wrote a letter to the President of the Russian Federation V. V. Putin, in which they gave an unfavorable assessment of the current state of Russian science. The letter listed a number of measures aimed at correcting the current state of science, and noted that "the time of political correctness is over, it is high time to speak out openly calling things by their proper names".Meeting with a group of academicians of the Russian Academy of Sciences in December of 2016, the President of the Russian Federation V.V. Putin stressed the timeliness of setting the above problems and the need to eliminate the noted deficiencies, drawing attention to the fact that only outstanding scientists of international standing with significant scientific achievements should be elected as academicians of the RAS.In connection with the critical assessment of the current state of Russian science in its various fields, expressed in the aforesaid letter of the academicians, it is of some interest to analyze the scientific activities and scientific achievements of some Russian scientists, in particular, in the field of thermal power engineering. For this analysis, articles were used published in the Teploenergetika (Heat Power Engineering) journal as well as a Report prepared under agreement No.14.574.21.0017 with the Ministry of Education and Science of the Russian Federation (hereinafter — MoE&S) on improving the thermodynamic and technical-economic efficiency of trigeneration plants at distributed and small-scale power generation facilities.As follows from this analysis, the authors of the aforesaid publications mislead the scientific community and the MoE&S concerning the alleged increase of thermodynamic and technical-economic efficiency of trigeneration plants considered by them. There are no grounds for such conclusions, since the listed materials contain no specific results of experimental and/or calculation studies of thermodynamic and technical-economic efficiency of trigeneration plants. It is therefore very strange that a Committee of the MoE&S signed an Act certifying “proper” implementation of Agreement No. 14.574.21.0017.
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Buck, R., e S. Friedmann. "Solar-Assisted Small Solar Tower Trigeneration Systems". Journal of Solar Energy Engineering 129, n. 4 (27 marzo 2007): 349–54. http://dx.doi.org/10.1115/1.2769688.
Testo completoAbstract (sommario):
Solar-hybrid gas turbine power systems offer a high potential for cost reduction of solar power. Such systems were already demonstrated as test systems. For the market introduction of this technology, microturbines in combination with small solar tower plants are a promising option. The combination of a solarized microturbine with an absorption chiller was studied; the results are presented in this paper. The solar-hybrid trigeneration system consists of a small heliostat field, a receiver unit installed on a tower, a modified microturbine, and an absorption chiller. The components are described, as well as the required modifications for integration to the complete system. Several absorption chiller models were reviewed. System configurations were assessed for technical performance and cost. For a representative site, a system layout was made, using selected industrial components. The annual energy yield in power, cooling, and heat was determined. A cost assessment was made to obtain the cost of electricity and cooling power, and eventually additional heat. Various load situations for electric and cooling power were analyzed. The results indicate promising niche applications for the solar-assisted trigeneration of power, heat, and cooling. The potential for improvements in the system configuration and the components is discussed, also the next steps toward market introduction of such systems.
Tesi sul tema "Trigeneration plants"
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Puig, Arnavat Maria. "Performance modelling and validation of biomass gasifiers for trigeneration plants". Doctoral thesis, Universitat Rovira i Virgili, 2011. http://hdl.handle.net/10803/51880.
Testo completoAbstract (sommario):
Esta tesis desarrolla un modelo sencillo pero riguroso de plantas de trigeneración con gasificación de biomasa para su simulación, diseño y evaluación preliminar. Incluye una revisión y estudio de diferentes modelos propuestos para el proceso de gasificación de biomasa.Desarrolla un modelo modificado de equilibrio termodinámico para su aplicación a procesos reales que no alcanzan el equilibrio así comodos modelos de redes neuronales basados en datos experimentales publicados: uno para gasificadores BFB y otro para gasificadores CFB. Ambos modelos, ofrecen la oportunidad de evaluar la influencia de las variaciones de la biomasa y las condiciones de operación en la calidad del gas producido. Estos modelos se integran en el modelo de la planta de trigeneración con gasificación de biomasa de pequeña-mediana escala y se proponen tres configuraciones para la generación de electricidad, frío y calor. Estas configuraciones se aplican a la planta de poligeneración ST-2 prevista en Cerdanyola del Vallés.This thesis develops a simple but rigorous model for simulation, design and preliminary evaluation of trigeneration plants based on biomass gasification. It includes a review and study of various models proposed for the biomass gasification process and different plant configurations. A modified thermodynamic equilibrium model is developed for application to real processes that do not reach equilibrium. In addition, two artificial neural network models, based on experimental published data, are also developed: one for BFB gasifiers and one for CFB gasifiers. Both models offer the opportunity to evaluate the influence of variations of biomass and operating conditions on the quality of gas produced. The different models are integrated into the global model of a small-medium scale biomass gasification trigeneration plant proposing three different configurations for the generation of electricity, heat and cold. These configurations are applied to a case study of the ST-2 polygeneration plant foreseen inCerdanyola del Valles.
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Polyzakis, Apostolos. "Technoeconomic evaluation of trigeneraton plant: Gas turbine performance, absorption cooling and district heating". Thesis, Cranfield University, 2006. http://hdl.handle.net/1826/1832.
Testo completoAbstract (sommario):
This PhD thesis is a demand led study taking into account changes in ambient conditions
and power settings of a tri-generation power plant. Includes an evaluation tool for
combined heat, cooling and power generation plant. The thesis is based on an overall
technical-economic analysis of the tri-generation system, including:
1. Energy demand analysis and evaluation of actual tri-generation case studies.
2. Modelling of the prime mover (Gas Turbine, GT)
3. Modelling of the absorption cooling system, (LiBr/Water).
4. Economic analysis and evaluation of the entire tri-generation plant.
Initially, the main effort is to carry out research concerning the energy demands of
different actual cases. The research includes sourcing, collecting, classification and
evaluation of the available information. The cases cover a wide range of economic life
and the resulting data specifies the energy needs which the purposed tri-generation power
plant needs to cover.
The second part deals with the prime mover (namely the Gas Turbine, GT) modelling and
simulation. The technical part of the assessment includes the Design Point (DP) and Off
Design (OD) analysis of the GT. In other words, the performance analysis simulates
different thermodynamic cycles (Simple, or with Heat Exchanger), and different
configurations (one or two shafts). Also, the computer programming code is capable of
simulating the effects of the use of different types of fuel, ambient conditions, part load
conditions, degradation, or the extraction of power for district heating or for absorption
cooling.
The third part includes the simulation of the absorption cooling system alone and/or in
co-operation with the prime mover. The simulation is based upon the premise that the
original prime mover is replaceable.
Finally, an evaluation methodology of tri-generation plants, is introduced taking into
account, both technical facts and economic data -based on certain cases from Greek
reality- helping the potential users to decide whether it is profitable to use such
technology or not. The economic scene will include the basic economic facts such as
initial cost, handling and operational cost (fuel prices, maintenance etc), using
methodology based on Net Present Value (NPV).
This thesis suggests several tri-generation technology modes. The more economic
favourable than the conventional technology is the 2-shaft simple cycle mode for the
cases of international airport (12MW total power demand) and the isolated island
(120MW), while the 1-shaft simple cycle mode is the more economic favourable for the
case of hotel (1MW).
The main contribution of the thesis is that it provides an intergraded realistic tool, which
simulates the future operation (technical and economic) of a trigeneration plant, capable
of helping the potential investor decide if it is profitable to proceed with the investment.
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Takaki, Alessandro Tomio [UNESP]. "Análise do aproveitamento do gás natural em plantas de cogeração e trigeração de energia em indústrias frigoríficas". Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/88886.
Testo completoAbstract (sommario):
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takaki_at_me_ilha.pdf: 1453305 bytes, checksum: 0ba83e01600d7f0ddfb6ab048c8af3be (MD5)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Neste trabalho é analisada a possibilidade de utilização do gás natural como combustível em indústrias frigoríficas em substituição aos combustíveis tradicionalmente utilizados, como a lenha e o óleo. Os estudos são feitos com base numa planta de um frigorífico bovino bastante representativo do setor, que utiliza equipamentos e combustíveis tradicionais para a produção de vapor para processos e compra energia elétrica de uma concessionária. São consideradas algumas opções para a ampliação da capacidade de produção, incluindo a implantação de plantas de cogeração e trigeração a gás natural que são capazes de produzir simultaneamente eletricidade, vapor para os processos e refrigeração para as câmaras frigoríficas. Para fins de avaliação do desempenho são feitas análises energéticas e exergéticas para cada uma das configurações propostas. Por fim, é realizada uma análise termoeconômica, através da Teoria do Custo Exergético, que possibilita determinar os custos exergéticos e monetários e depois avaliar os reflexos dos custos de investimento de capital e do combustível na composição dos custos dos produtos (energia elétrica, vapor e refrigeração).
In this work, the possibility of the use of natural gas as fuel in slaughterhouses, substituting the traditional fuels used (firewood and oil), is analyzed. The studies are based on a plant of a quite representative bovine slaughterhouse, which uses equipment and fuels traditional for production of steam for processes and buys electricity of a dealership. Some options for the enlargement of the production capacity are considered, including the implantation of natural gas cogeneration and trigeneration plants, which are capable to produce, simultaneously, electricity, steam for the processes and cooling for the refrigerating chambers. For effect of performance evaluation, energetic and exergetic analyses for each one of the proposed configurations are performed. Finally, a thermoeconomic analysis is accomplished, by means of the Theory of Exergetic Cost, which makes possible to determine the exergetic and monetary costs and to evaluate the reflexes of the costs of capital investment and of the fuel in the composition of the costs of the products (electric power, steam and cooling).
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Bruno, Argilaguet Joan Carles. "Integració de cicles d'absorció en xarxes d'energia de plantes de procès". Doctoral thesis, Universitat Rovira i Virgili, 1999. http://hdl.handle.net/10803/31928.
Testo completoAbstract (sommario):
L’objectiu d’aquesta tesi és estudiar la viabilitat de la integració de la tecnologia dels cicles de refrigeració per absorció ja existent comercialment, en plantes d’energia industrials, comparant els resultants amb l’alternativa convencional formada per cicles de compressió.
La metodologia proposada en aquesta tesi es basa en cinc grans apartats: recopilació de dades de la planta d’energia i de la demanda de fred que es pretén cobir, seleccionar els cicles de refrigeració candidats que podrien satisfer l’esmentada demanda de fred, és a dir, establir les alternatives de disseny existents per a subministrar el fred necessari a la planta de procés utilitzant el programa XV, el qual permet la simulació i optimització de plantes d’energia. El tercer pas de la metodologia, es construir un fitxer de dades estàndard on s’introdueixen la topologia de la planta d’energia i les seves característiques específiques, incloent els paràmetres d’operació dels cicles de refrigeració. Al quart pas, es realitza l’optimització de la planta global d’energia utilitzant com a funció objectiu els costos d’operació i les prestacions de la planta i finalment es calculen els costos d’operació i els indicadors econòmics adients per a la selecció de la millor configuració.
En aquesta tesi es presenten dues aplicacions pràctiques en una indústria pretroquímica de Tarragona per tal d’avaluar la metodologia proposada utilitzant equips d’amoníac/aigua i d’aigua/LiBr.
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Takaki, Alessandro Tomio. "Análise do aproveitamento do gás natural em plantas de cogeração e trigeração de energia em indústrias frigoríficas /". Ilha Solteira : [s.n.], 2006. http://hdl.handle.net/11449/88886.
Testo completoAbstract (sommario):
Resumo: Neste trabalho é analisada a possibilidade de utilização do gás natural como combustível em indústrias frigoríficas em substituição aos combustíveis tradicionalmente utilizados, como a lenha e o óleo. Os estudos são feitos com base numa planta de um frigorífico bovino bastante representativo do setor, que utiliza equipamentos e combustíveis tradicionais para a produção de vapor para processos e compra energia elétrica de uma concessionária. São consideradas algumas opções para a ampliação da capacidade de produção, incluindo a implantação de plantas de cogeração e trigeração a gás natural que são capazes de produzir simultaneamente eletricidade, vapor para os processos e refrigeração para as câmaras frigoríficas. Para fins de avaliação do desempenho são feitas análises energéticas e exergéticas para cada uma das configurações propostas. Por fim, é realizada uma análise termoeconômica, através da Teoria do Custo Exergético, que possibilita determinar os custos exergéticos e monetários e depois avaliar os reflexos dos custos de investimento de capital e do combustível na composição dos custos dos produtos (energia elétrica, vapor e refrigeração).Abstract: In this work, the possibility of the use of natural gas as fuel in slaughterhouses, substituting the traditional fuels used (firewood and oil), is analyzed. The studies are based on a plant of a quite representative bovine slaughterhouse, which uses equipment and fuels traditional for production of steam for processes and buys electricity of a dealership. Some options for the enlargement of the production capacity are considered, including the implantation of natural gas cogeneration and trigeneration plants, which are capable to produce, simultaneously, electricity, steam for the processes and cooling for the refrigerating chambers. For effect of performance evaluation, energetic and exergetic analyses for each one of the proposed configurations are performed. Finally, a thermoeconomic analysis is accomplished, by means of the Theory of Exergetic Cost, which makes possible to determine the exergetic and monetary costs and to evaluate the reflexes of the costs of capital investment and of the fuel in the composition of the costs of the products (electric power, steam and cooling).
Orientador: Ricardo Alan Verdú Ramos
Coorientador: Cassio Roberto Macedo Maia
Banca: Emanuel Rocha Woiski
Banca: Sílvio de Oliveira Júnior
Mestre
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Dolinský, Filip. "Ostrovní systémy". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-378496.
Testo completoAbstract (sommario):
Master thesis deals with usage issues of autonomous, self-sufficient and decentralized systems. In the first part convectional and experimental sources for autonomous systems are disclosed. Second chapter deals with accumulation of electrical and thermal energy and possibilities of applications. 3rd part is focused on pilot project realized for autonomous and smart systems, which were built in last years. In the 4th chapter electrical and thermal energy consumption curves are made on daily and monthly basis for 4 type objects. In the fifth part issue of autonomy is explained, and for type buildings solutions are made with additional return on investment. The last chapter is focused on calculation of thermal accumulator and briefly discloses small district heating.
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Al-Sulaiman, Fahad. "Thermodynamic Modeling and Thermoeconomic Optimization of Integrated Trigeneration Plants Using Organic Rankine Cycles". Thesis, 2010. http://hdl.handle.net/10012/5675.
Testo completoAbstract (sommario):
In this study, the feasibility of using an organic Rankine cycle (ORC) in trigeneration plants is examined through thermodynamic modeling and thermoeconomic optimization. Three novel trigeneration systems are considered. Each one of these systems consists of an ORC, a heating-process heat exchanger, and a single-effect absorption chiller. The three systems are distinguished by the source of the heat input to the ORC. The systems considered are SOFC-trigeneration, biomass- trigeneration, and solar-trigeneration systems. For each system four cases are considered: electrical-power, cooling-cogeneration, heating-cogeneration, and trigeneration cases. Comprehensive thermodynamic analysis on each system is carried out. Furthermore, thermoeconomic optimization is conducted. The objective of the thermoeconomic optimization is to minimize the cost per exergy unit of the trigeneration product. The results of the thermoeconomic optimization are used to compare the three systems through thermodynamic and thermoeconomic analyses. This study illustrates key output parameters to assess the trigeneration systems considered. These parameters are energy efficiency, exergy efficiency, net electrical power, electrical to cooling ratio, and electrical to heating ratio. Moreover, exergy destruction modeling is conducted to identify and quantify the major sources of exergy destruction in the systems considered. In addition, an environmental impact assessment is conducted to quantify the amount of CO2 emissions in the systems considered. Furthermore, this study examines both the cost rate and cost per exergy unit of the electrical power and other trigeneration products.
This study reveals that there is a considerable efficiency improvement when trigeneration is used, as compared to only electrical power production. In addition, the emissions of CO2 per MWh of trigeneration are significantly lower than that of electrical power. It was shown that the exergy destruction rates of the ORC evaporators for the three systems are quite high. Therefore, it is important to consider using more efficient ORC evaporators in trigeneration plants. In addition, this study reveals that the SOFC-trigeneration system has the highest electrical energy efficiency while the biomass-trigeneration system and the solar mode of the solar trigeneration system have the highest trigeneration energy efficiencies. In contrast, the SOFC-trigeneration system has the highest exergy efficiency for both electrical and trigeneration cases. Furthermore, the thermoeconomic optimization shows that the solar-trigeneration system has the lowest cost per exergy unit. Meanwhile the solar-trigeneration system has zero CO2 emissions and depends on a free renewable energy source. Therefore, it can be concluded that the solar-trigeneration system has the best thermoeconomic performance among the three systems considered.
Capitoli di libri sul tema "Trigeneration plants"
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Valente, Antonio, Diego Iribarren e Javier Dufour. "Life cycle assessment of trigeneration plants". In Current Trends and Future Developments on (Bio-) Membranes, 125–39. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-817807-2.00006-x.
Testo completoAtti di convegni sul tema "Trigeneration plants"
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Badami, Marco, e Armando Portoraro. "Energetic Operational Assessment of Two Small-Scale Trigeneration Plants". In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89940.
Testo completoAbstract (sommario):
Trigeneration allows the thermal energy that is recovered from the prime mover of a cogeneration plant to be exploited to produce a cooling effect. In this way, when residential applications are considered, it is possible to extend the working hours of the plant over the heating period, providing the summer air conditioning. The paper is aimed at investigating the energetic performance of trigeneration, compared to cogeneration, dealing with the differences on prime mover efficiencies in the winter and the summer season. Two small-scale trigeneration plants have been considered: an internal combustion engine cogenerator capable of 126 kWel coupled to a liquid desiccant system, and a 100 kWel natural gas microturbine with an absorption chiller. The primary energy savings have been calculated, for both plant configurations, through a commonly accepted methodology proposed by the European Union, and through another methodology, reported in literature, which seems more appropriate to describe the energetic performances of trigeneration plants. A new performance indicator was then introduced by the Authors. The results are presented and discussed.
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Immovilli, Fabio, Alberto Bellini, Claudio Bianchini e Giovanni Franceschini. "Solar Trigeneration for Residential Applications, a Feasible Alternative to Traditional Micro-Cogeneration and Trigeneration Plants". In 2008 IEEE Industry Applications Society Annual Meeting (IAS). IEEE, 2008. http://dx.doi.org/10.1109/08ias.2008.142.
Testo completo
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Atanasoae, P. "The technical and economic analysis of the trigeneration plants". In 2012 International Conference and Exposition on Electrical and Power Engineering (EPE). IEEE, 2012. http://dx.doi.org/10.1109/icepe.2012.6463808.
Testo completo
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Chicco, G., e P. Mancarella. "Planning aspects and performance indicators for small-scale trigeneration plants". In 2005 International Conference on Future Power Systems. IEEE, 2005. http://dx.doi.org/10.1109/fps.2005.204203.
Testo completo
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Badami, Marco, Mauro Ferrero e Armando Portoraro. "Nominal and Partial Load Operation of a Small-Scale Microturbine With a Liquid Desiccant Cooling System: An Experimental Assessment". In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-65906.
Testo completoAbstract (sommario):
In a trigeneration plant, the thermal energy recovered from the prime mover is exploited to produce a cooling effect. Although this possibility allows the working hours of the plant to be extended over the heating period, providing summer air conditioning through thermally activated technologies, it is rather difficult to find experimental data on trigeneration plant operation in the literature, and information on the performance characteristics at off-design conditions is rather limited. The paper has the aim of illustrating the experimental data of a real trigeneration system installed at the Politecnico di Torino (Turin, Italy). The system is composed of a natural gas 100 kWel microturbine coupled to a liquid desiccant system. The data are presented for both cogeneration and trigeneration configurations, and for full and partial load operations. An energetic and economic performance assessment, at rated power operation, is presented and compared with the partial load operation strategy. The primary energy savings are calculated through a widely accepted methodology, proposed by the European Union, and through another methodology, reported in literature, which, according to the Authors, seems more suitable to describe the energetic performances of trigeneration plants.
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Badami, Marco, Armando Portoraro e Giuseppe Ruscica. "Analysis and Comparison of Performance of Two Small-Scale Trigeneration Plants: An ICE With a Liquid Desiccant Cooling System and a MGT With an Absorption Chiller". In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12279.
Testo completoAbstract (sommario):
Two natural gas small-scale trigeneration plants are presented in the paper. Both plants are going to be started-up at the Politecnico di Torino (Turin, Italy) and are part of a new cogeneration and trigeneration systems laboratory, which is going to be setup and exploited for scientific and technical purposes. The first plant has 126/220/210 kW electrical, heating and cooling capacities, respectively, and is characterized by an innovative internal combustion engine that has been coupled to a liquid LiCl-water desiccant cooling system, which provides cooled and dehumidified air to a classroom building. The other plant has 100/145/98 kW electrical, heating and cooling capacities and is composed of a natural gas micro gas turbine, coupled to a LiBr-Water absorption chiller, which provides cooled water to the internal cooling grid at the Politecnico. The paper has the aim of comparing the performances of the two plants from an energetic and economic point of view; the Primary Energy Savings are calculated through different methodologies reported in literature for both installations, and the results are compared and discussed. A comparison of the economic performance offered by the two plants is also reported, together with a sensitivity analysis on the influence of subsidies foreseen by Italian Legislation on economic profitability.
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Buck, R., e S. Friedmann. "Solar-Assisted Small Solar Tower Trigeneration Systems". In ASME 2006 International Solar Energy Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/isec2006-99129.
Testo completoAbstract (sommario):
Solar-hybrid gas turbine power systems offer a high potential for cost reduction of solar power. Such systems were already demonstrated as test systems. For the market introduction of this technology, microturbines in combination with small solar tower plants are a promising option. The combination of a solarized microturbine with an absorption chiller was studied, the results are presented in this paper. The solar-hybrid trigeneration system consists of a small heliostat field, a receiver unit installed on a tower, a modified microturbine and an absorption chiller. The components are described, as well as the required modifications for integration to the complete system. Several absorption chiller models were reviewed. System configurations were assessed for technical performance and cost. For a representative site a system layout was made, using selected industrial components. The annual energy yield in power, cooling and heat was determined. A cost assessment was made to obtain the cost of electricity and cooling power, and eventually additional heat. Various load situations for electric and cooling power were analyzed. The results indicate promising niche applications for the solar-assisted trigeneration of power, heat and cooling. The potential for improvements in the system configuration and the components is discussed, also the next steps towards market introduction of such systems.
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Amoruso, Gabriele, Marco Badami e Armando Portoraro. "Local District Heating Network With a Small-Scale Trigeneration Plant: Energetic and Economic Analysis of Optimization Strategies". In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-36499.
Testo completoAbstract (sommario):
District heating networks, integrated with cogeneration plants, allow primary energy savings to be obtained compared to traditional heat-generation systems. However, the management of these plants in residential applications is a complex issue, because of the fluctuations in the thermal users’ daily profiles. The proper operation of these plants therefore becomes of utmost importance in order to avoid energy dissipations and with a consequent economic profitability loss. The paper has the aim of illustrating the experimental data of a real, local district heating network coupled to a trigeneration plant installed and in operation in Turin, Italy. The main technical characteristics of the installation are described, and the present operational strategies are presented and discussed. The study focuses on the analysis of several possible optimizations of these strategies, and the increase in energy efficiency that can be obtained for each of them, taking into account the thermal losses over the heating grid. A comparative economic analysis has also been carried out in order to highlight the effect of these optimizations on the economic profitability of the installation. The results of the study are presented in detail and discussed in the paper.
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Bracco, Stefano, e Federico Delfino. "The role of high efficiency trigeneration plants within sustainable smart microgrids: Performance analysis and experimental tests". In 2015 AEIT International Annual Conference (AEIT). IEEE, 2015. http://dx.doi.org/10.1109/aeit.2015.7415236.
Testo completo
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López Vega, Aldo, Gregory J. Kowalski, Carlos Rubio-Maya e J. Jesús Pacheco Ibarra. "Modelling and Validation of a Hybrid Trigeneration/Photovoltaic System Installed in a Shopping Mall Complex". In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-72020.
Testo completoAbstract (sommario):
Shopping malls require large amount of electrical and thermal energy to provide quality services and maintain customer’s comfort. Conventionally, electrical energy for direct use and operation of HVAC systems is supplied directly from the electrical grid and is produced in remote power plants that burns fossil fuels. Thermal energy for hot water or heating supply is usually produced by boilers that use LP gas or fuel oil. Given these conditions, cogeneration and trigeneration systems supported by renewable sources of energy are ideal schemes to meet energy needing in a more efficient and cost-effective manner. For this reason, a hybrid trigeneration/photovoltaic system has been installed to cover approximately 50% of the electrical and thermal demands of a shopping mall complex, located in Morelia (MichoacÁn, Mexico). The trigeneration plant consists of a microturbine with an electric power output of 65 kW, three absorption chillers with an output of 5 RT each and a photovoltaic system of 30 kW of electrical power, composed of 108 photovoltaic modules of 280 W each. The Incentive Program for Technology Innovation of the National Council of Science and Technology has funded and sponsored the project and it is to demonstrate on-site feasibility under the Mexican energy context. The installation will generate information on the global and specific operation of the components. In this paper, the development and validation of thermodynamic models to analyze and simulate the individual and integral operation of the hybrid trigeneration/photovoltaic system components is presented. These models based on the First and Second law will allow an integral simulation of the plant to determine the most appropriate operating conditions. The First and Second law efficiencies as well as the exergy destruction in each component is reported. The models have been developed from data provided by manufacturers and the application of mass, energy and exergy balances. The validation of models has been carried out using experimental data acquired directly from the components of the plant and other measurement instruments that have been used for this purpose. The results of the models have been compared with experimental data and have showed satisfactory agreement, with an average difference of 2.92%.