Performance Evaluation of the Integration Between a Thermo-Photo-Voltaic Generator and an Organic Rankine Cycle

2012 ◽  
Author(s):  
Claudio Ferrari ◽  
Francesco Melino ◽  
Enrico Barbieri ◽  
Mirko Morini ◽  
Michele Pinelli ◽  
...  
Keyword(s):  
Thermal Power ◽  
Electric Energy ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Large Degree ◽  
Integrated System ◽  
Tertiary Sector ◽  
Photo Voltaic ◽  
Definition Of ◽  
Artificial Heat

The present study deals with the integration between a Thermo-Photo-Voltaic generator (TPV) and an Organic Rankine Cycle (ORC) named here TORCIS (Thermo-photo-voltaic Organic Rankine Cycle Integrated System). The investigated TORCIS system is suitable for CHP applications, such as residential and tertiary sector users. The aim of the research project on this innovative system is the complete definition of the components design and the pre-prototyping characterization of the system, covering all the unresolved issues. This paper shows the results of a preliminary thermodynamic analysis of the system. More in details, TPV is a system to convert into electric energy the radiation emitted from an artificial heat source (i.e., combustion of fuel) by the use of photovoltaic cells; in this system, the produced electric power is strictly connected to the thermal one, as their ratio is almost constant and cannot be changed without severe loss in performance; the coupling between TPV and ORC allows to overcome this limitation and to realize a cogenerative system which can be regulated with a large degree of freedom changing the electric-to-thermal power ratio. The paper presents and discusses the TORCIS achievable performance, highlighting its potential in the field of distributed generation and cogenerative systems.

Performance Evaluation of the Integration Between a Thermo–Photo–Voltaic Generator and an Organic Rankine Cycle

2012 ◽  
Vol 134 (10) ◽  
Author(s):  
Enrico Barbieri ◽  
Andrea De Pascale ◽  
Claudio Ferrari ◽  
Francesco Melino ◽  
Mirko Morini ◽  
...  
Keyword(s):  
Thermal Power ◽  
Electric Energy ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Large Degree ◽  
Integrated System ◽  
Tertiary Sector ◽  
Photo Voltaic ◽  
Definition Of ◽  
Artificial Heat

The present study deals with the integration between a thermo-photo-voltaic generator (TPV) and an organic Rankine cycle (ORC), named here TORCIS (thermo-photo-voltaic organic Rankine cycle integrated system). The investigated TORCIS system is suitable for combined heat and power (CHP) applications, such as residential and tertiary sector users. The aim of the research project on this innovative system is the complete definition of the components’ design and the preprototyping characterization of the system, covering all the unresolved issues. This paper shows the results of a preliminary thermodynamic analysis of the system. In more details, TPV is a system to convert, into electric energy, the radiation emitted from an artificial heat source (i.e., combustion of fuel) by the use of photovoltaic cells; in this system, the produced electric power is strictly connected to the thermal one, as their ratio is almost constant and cannot be changed without severe loss in performance. The coupling between TPV and ORC allows us to overcome this limitation and to realize a cogenerative system, which can be regulated with a large degree of freedom, changing the electric-to-thermal power ratio. The paper presents and discusses the TORCIS achievable performance, highlighting its potential in the field of distributed generation and cogenerative systems.

scholarly journals A Distributed Generation Hybrid System for Electric Energy Boosting Fueled with Olive Industry Wastes

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 500
Author(s):  
David Vera ◽  
Francisco Jurado ◽  
Bárbara de Mena ◽  
Jesús C. Hernández
Keyword(s):  
Electric Power ◽  
Thermal Power ◽  
Electrical Power ◽  
Electric Energy ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Hot Water ◽  
Electricity Production ◽  
Condensation Temperature ◽  
Olive Industry

This paper presents the theoretical model and the simulation of a cutting edge hybrid power system composed of an externally-fired gas turbine (EFGT) coupled with an organic Rankine cycle (ORC) as a bottoming unit for the maximization of electrical power. The power plant is fed with different biomass sources from olive industry wastes (pruning, dry pomace, stones, leaves and twigs), providing more than 550 kW of electric power and a net electrical efficiency of 26.0%. These wastes were burnt directly at atmospheric pressure in an EFGT, producing 400 kW of electric power and exhaust gases at 300 °C. Ten suitable ORC working fluids have been studied to maximize the electric power generation: cyclohexane, isohexane, pentane, isopentane, neopentane, R113, R245fa, R365mfc, R1233zd and methanol. The best fluid was R1233zd, reaching 152.4 kW and 22.1% of ORC thermal efficiency; as drawback, however, R1233zd was not suitable for Combined Heat and Power CHP applications due its lower condensation temperature. Thus, despite R113 gave minor electricity production (137.5 kW) this allowed to generate additional thermal power (506.8 kW) in the way of hot water at 45 °C.

scholarly journals Experimental investigation of domestic micro-CHP based on the gas boiler fitted with ORC module

2016 ◽  
Vol 37 (3) ◽  
pp. 79-93 ◽  
Author(s):  
Jan Wajs ◽  
Dariusz Mikielewicz ◽  
Michał Bajor ◽  
Zbigniew Kneba
Keyword(s):  
Energy Demand ◽  
Electricity Generation ◽  
Electric Energy ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Future Generation ◽  
Working Fluid ◽  
Ethanol Vapour ◽  
System User ◽  
Generation Unit

AbstractThe results of investigations conducted on the prototype of vapour driven micro-CHP unit integrated with a gas boiler are presented. The system enables cogeneration of heat and electric energy to cover the energy demand of a household. The idea of such system is to produce electricity for own demand or for selling it to the electric grid – in such situation the system user will became the prosumer. A typical commercial gas boiler, additionally equipped with an organic Rankine cycle (ORC) module based on environmentally acceptable working fluid can be regarded as future generation unit. In the paper the prototype of innovative domestic cogenerative ORC system, consisting of a conventional gas boiler and a small size axial vapour microturbines (in-house designed for ORC and the commercially available for Rankine cycle (RC)), evaporator and condenser were scrutinised. In the course of study the fluid working temperatures, rates of heat, electricity generation and efficiency of the whole system were obtained. The tested system could produce electricity in the amount of 1 kWe. Some preliminary tests were started with water as working fluid and the results for that case are also presented. The investigations showed that domestic gas boiler was able to provide the saturated/superheated ethanol vapour (in the ORC system) and steam (in the RC system) as working fluids.

scholarly journals Modeling of a CPV/T-ORC Combined System Adopted for an Industrial User

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3476 ◽  
Author(s):  
Carlo Renno ◽  
Fabio Petito ◽  
Diana D’Agostino ◽  
Francesco Minichiello
Keyword(s):  
Energy Demand ◽  
Peak Power ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Point Of View ◽  
Integrated System ◽  
Electrical Heating ◽  
Combined System ◽  
Artificial Neural Network Ann ◽  
T System

The increasing energy demand encourages the use of photovoltaic solar systems coupled to organic rankine cycle (ORC) systems. This paper presents a model of an ORC system coupled with a concentrating photovoltaic and thermal (CPV/T) system. The CPV/T-ORC combined system, described and modeled in this paper, is sized to match the electrical load of a medium industrial user located in the South of Italy. A line-focus configuration of the CPV/T system, constituted by 16 modules with 500 triple-junction cells, is adopted. Different simulations have been realized evaluating also the direct normal irradiance (DNI) by means of the artificial neural network (ANN) and considering three input condition scenarios: Summer, winter, and middle season. Hence, the energy performances of the CPV/T-ORC system have been determined to evaluate if this integrated system can satisfy the industrial user energy loads. In particular, the peak power considered for the industrial machines is about 42 kW while other electrical, heating or cooling loads require a total peak power of 15 kW; a total electric average production of 7500 kWh/month is required. The annual analysis shows that the CPV/T-ORC system allows satisfying 100% of the electric loads from April to September; moreover, in these months the overproduction can be sold to the network or stored for a future use. The covering rates of the electrical loads are equal to 73%, 77%, and 83%, respectively for January, February, and March and 86%, 93%, and 100%, respectively for October, November, and December. Finally, the CPV/T-ORC combined system represents an ideal solution for an industrial user from the energy point of view.

The definition of non-dimensional integration temperature difference and its effect on organic Rankine cycle

2016 ◽  
Vol 167 ◽  
pp. 17-33 ◽  
Author(s):  
Xufei Yang ◽  
Jinliang Xu ◽  
Zheng Miao ◽  
Jinghuang Zou ◽  
Fengliang Qi
Keyword(s):  
Temperature Difference ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Definition Of

A Finite-Time Thermodynamic Framework for Optimizing Solar-Thermal Power Plants

2007 ◽  
Vol 129 (4) ◽  
pp. 355-362 ◽  
Author(s):  
A. McMahan ◽  
S. A. Klein ◽  
D. T. Reindl
Keyword(s):  
Finite Time ◽  
Power Plants ◽  
Thermal Power ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Capital Cost ◽  
Solar Thermal ◽  
Thermal Power Plants ◽  
Power Cycles ◽  
Solar Thermal Power

Fundamental differences between the optimization strategies for power cycles used in “traditional” and solar-thermal power plants are identified using principles of finite-time thermodynamics. Optimal operating efficiencies for the power cycles in traditional and solar-thermal power plants are derived. In solar-thermal power plants, the added capital cost of a collector field shifts the optimum power cycle operating point to a higher-cycle efficiency when compared to a traditional plant. A model and method for optimizing the thermoeconomic performance of solar-thermal power plants based on the finite-time analysis is presented. The method is demonstrated by optimizing an existing organic Rankine cycle design for use with solar-thermal input. The net investment ratio (capital cost to net power) is improved by 17%, indicating the presence of opportunities for further optimization in some current solar-thermal designs.

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