The Experts below are selected from a list of 7593 Experts worldwide ranked by ideXlab platform

Pier Ruggero Spina - One of the best experts on this subject based on the ideXlab platform.

  • Optimization of a hybrid Energy plant by integrating the cumulative Energy demand
    Applied Energy, 2019
    Co-Authors: Hilal Bahlawan, Pier Ruggero Spina, Mirko Morini, Michele Pinelli, Witold-roger Poganietz, Mauro Venturini
    Abstract:

    Abstract This paper deals with the optimal design of a hybrid Energy plant, which can include the following Energy systems: solar thermal collector, photovoltaic panel, hybrid photovoltaic/thermal solar system, combined heat and power system, organic Rankine cycle, absorption chiller, air source heat pump, ground source heat pump and thermal Energy storage. Three different configurations are analyzed. In the first configuration, the abovementioned systems are considered with the exception of the hybrid photovoltaic/thermal solar system and organic Rankine cycle. In the second configuration, a hybrid photovoltaic/thermal solar system is also included and in the third configuration the use of an organic Rankine cycle as the bottoming cycle of the combined heat and power system is evaluated. The optimization goal is to minimize the Primary Energy demanded throughout the manufacturing and operation phase of the hybrid Energy plant. The challenge of non-linear life cycle inventory scaling of Energy systems is also addressed. A tower located in northern Italy is selected as a case study and two different approaches are evaluated. The first approach consists of solving the sizing optimization by minimizing Primary Energy consumption only during the operation phase, while in the second approach Primary Energy consumption is minimized throughout the life cycle of the plant by integrating the life cycle assessment into the optimization process. The results show that, if life cycle assessment is integrated, the optimal sizes of plant components are different and the Primary Energy Saving throughout the life cycle is always higher. With reference to the LCA integrated approach and compared to the first configuration, the use of a hybrid photovoltaic/thermal solar system instead of separate solar thermal collector and photovoltaic panels is more efficient and may allow a Primary Energy Saving of about 4%. Furthermore, compared to a conventional plant, the Primary Energy Saving achievable with the first configuration is approximately 14%, while the Primary Energy Saving increases to about 17% for the second and third configurations.

  • Guidelines for residential micro-CHP systems design
    Applied Energy, 2012
    Co-Authors: M Bianchi, Andrea De Pascale, Pier Ruggero Spina
    Abstract:

    The aim of this paper is to provide general guidelines for the design of micro-CHP systems for the heating of residential buildings. A micro-CHP system is intended as a system composed of a prime mover, a thermal storage system and an auxiliary boiler. In particular, the analyses carried out in the paper provide guidelines to select the proper prime mover technology and size and thermal storage system size, with reference to prime mover operating hours and produced electric and thermal Energy. Moreover, both Primary Energy Saving and profitability of the CHP system compared to the separate production of electricity and heat are also evaluated.

  • Best practice in residential micro-CHP systems design
    Umberto Desideri Jinyue Yan, 2011
    Co-Authors: M Bianchi, Andrea De Pascale, Pier Ruggero Spina
    Abstract:

    The aim of this paper is to evaluate the profitability of micro-CHP systems for the heating of residential buildings. A micro-CHP system is intended as a system composed of a prime mover, a thermal storage system and an auxiliary boiler. For this kind of system analyses were carried out in order to evaluate both profitability and Primary Energy Saving compared to the separate production of electricity and heat. In particular, the analyses provide the operating hours, the produced electric and thermal Energy and the allowable marginal cost of the CHP system with respect to a traditional boiler as a function of prime mover technology and size and of the thermal storage system size. Moreover, the relation between the CHP production (operating hours) and the thermal storage system size is evaluated thoroughly, showing its effect on the economic results

Muhamad Fazly - One of the best experts on this subject based on the ideXlab platform.

  • evaluation of solid oxide fuel cell based polygeneration system in residential areas integrating with electric charging and hydrogen fueling stations for vehicles
    Applied Energy, 2019
    Co-Authors: Farah Ramadhani, Hazlie Mokhlis, M A Hussain, Muhamad Fazly
    Abstract:

    Abstract This study proposes a design of polygeneration system based on solid oxide fuel cell to supply electricity, hot water, cooling, and hydrogen. This system also integrates the stationary supply for electric and hydrogen cars. The polygeneration system is developed based on Energy, economic and environment simulation models by taking into account its application for the residential building. Four system configurations were designed based on the grid connection and the vehicle type and subsequently evaluated to determine the performance of the system in regard to the criteria such as efficiency, reliability, Primary Energy Saving, cost Saving as well as carbon dioxide reduction. Moreover, a strategy of selling the available hydrogen was also considered to analyze the competitiveness of the proposed system with the conventional separated system. Depending on these criteria, analysis of fuel cell size with respect to the coverage of demands was also conducted. The proposed system achieved Primary Energy Savings, cost Saving and emission reduction of about 73%, 50% and 70% respectively. The hydrogen selling strategy has a significant effect in reducing Energy cost close to 51% for the configuration with electric vehicle station.

M Bianchi - One of the best experts on this subject based on the ideXlab platform.

  • performance analysis of an integrated chp system with thermal and electric Energy storage for residential application
    Applied Energy, 2013
    Co-Authors: M Bianchi, Aniello Pascale, Francesco Melino
    Abstract:

    Abstract The aim of this paper is the evaluation of the profitability of micro-CHP systems for residential application. An integrated CHP system composed of a prime mover, an Electric Energy Storage system, a thermal storage system and an auxiliary boiler has been considered. The study has been carried out taking into account a particular electrochemical storage system which requires also thermal Energy, during its operation, for a better exploitation of the residual heat discharged by the prime mover. The prime mover could be a conventional Internal Combustion Engine or also an innovative system, such as fuel cell or organic Rankine cycle. An investigation of this integrated CHP system has been carried out, by means of an in-house developed calculation code, performing a thermo-economic analysis. This paper provides useful results, in order to define the optimum sizing of components of the integrated CHP system under investigation; the developed code allows also to evaluate the profitability and the Primary Energy Saving with respect to the separate production of electricity and heat.

  • Guidelines for residential micro-CHP systems design
    Applied Energy, 2012
    Co-Authors: M Bianchi, Andrea De Pascale, Pier Ruggero Spina
    Abstract:

    The aim of this paper is to provide general guidelines for the design of micro-CHP systems for the heating of residential buildings. A micro-CHP system is intended as a system composed of a prime mover, a thermal storage system and an auxiliary boiler. In particular, the analyses carried out in the paper provide guidelines to select the proper prime mover technology and size and thermal storage system size, with reference to prime mover operating hours and produced electric and thermal Energy. Moreover, both Primary Energy Saving and profitability of the CHP system compared to the separate production of electricity and heat are also evaluated.

  • Best practice in residential micro-CHP systems design
    Umberto Desideri Jinyue Yan, 2011
    Co-Authors: M Bianchi, Andrea De Pascale, Pier Ruggero Spina
    Abstract:

    The aim of this paper is to evaluate the profitability of micro-CHP systems for the heating of residential buildings. A micro-CHP system is intended as a system composed of a prime mover, a thermal storage system and an auxiliary boiler. For this kind of system analyses were carried out in order to evaluate both profitability and Primary Energy Saving compared to the separate production of electricity and heat. In particular, the analyses provide the operating hours, the produced electric and thermal Energy and the allowable marginal cost of the CHP system with respect to a traditional boiler as a function of prime mover technology and size and of the thermal storage system size. Moreover, the relation between the CHP production (operating hours) and the thermal storage system size is evaluated thoroughly, showing its effect on the economic results

Farah Ramadhani - One of the best experts on this subject based on the ideXlab platform.

  • evaluation of solid oxide fuel cell based polygeneration system in residential areas integrating with electric charging and hydrogen fueling stations for vehicles
    Applied Energy, 2019
    Co-Authors: Farah Ramadhani, Hazlie Mokhlis, M A Hussain, Muhamad Fazly
    Abstract:

    Abstract This study proposes a design of polygeneration system based on solid oxide fuel cell to supply electricity, hot water, cooling, and hydrogen. This system also integrates the stationary supply for electric and hydrogen cars. The polygeneration system is developed based on Energy, economic and environment simulation models by taking into account its application for the residential building. Four system configurations were designed based on the grid connection and the vehicle type and subsequently evaluated to determine the performance of the system in regard to the criteria such as efficiency, reliability, Primary Energy Saving, cost Saving as well as carbon dioxide reduction. Moreover, a strategy of selling the available hydrogen was also considered to analyze the competitiveness of the proposed system with the conventional separated system. Depending on these criteria, analysis of fuel cell size with respect to the coverage of demands was also conducted. The proposed system achieved Primary Energy Savings, cost Saving and emission reduction of about 73%, 50% and 70% respectively. The hydrogen selling strategy has a significant effect in reducing Energy cost close to 51% for the configuration with electric vehicle station.

  • Optimum design of sofc based polygeneration system for residential area with vehicle charging or fueling station / Farah Ramadhani
    2019
    Co-Authors: Farah Ramadhani
    Abstract:

    The residential sector is one of the Energy consumers in the world generally, and in Malaysia, especially. Integrated Energy supply which can simultaneously generate multiEnergy types for fulfilling the demand of residential and vehicle users called polygeneration system is promising as the future and modern Energy supply design. This study proposes a modern Energy supply design for the residential area with considering stationary power and vehicle applications. The proposed system can generate electricity, hot water, and cooling system for the building. The system also provides power and hydrogen supplied to vehicle charging or fueling station in the private area. The polygeneration employs solid oxide fuel cell as a prime mover for heat and power generation. This study optimizes the design of polygeneration through four steps to overcome the deficiency in the system, increasing Energy Savings, cost Savings and minimizing carbon emission generated from the system. The first step, four configurations of the proposed design based on grid connection and type of vehicle to be served was evaluated. Next, the reliability of polygeneration system was improved by adding renewable Energy, a thermoelectric device, and Energy storage to increase the efficiency of the system. The third step was to design the optimum operating strategy to increase the reliability and Primary Energy Saving reduce the Energy cost and carbon emission. The last step was to develop the optimum size for the system component by using evolutionary and swarm based optimization algorithm. The results in the first step revealed the advantages of the SOFC based polygeneration system over the conventional separated system with several improvements in Energy Saving, Energy cost Savings and carbon emission of about 36%, 50% and 33%, respectively. Amongst four configurations studied in the first step, the standalone polygeneration with electric vehicle becomes the optimum configuration chosen as it has high Energy Saving, Energy cost Saving, and a good emission reduction. This study also proved the effect of the hydrogen selling strategy in decreasing the Energy cost of the polygeneration system by about 51% and improves the system to be more economically competitive against the conventional separated system. The results of the second step of this study confirmed that the polygeneration with added extra heat recovery system achieves the gains of reliability, efficiency, and Energy Saving by about 35.91%, 14.36%, and 11. 58%, respectively. The optimum operating strategy based on Fuzzy operation gives significant improvements on the efficiency, Energy Saving, and cost Saving by about 4%, 112%, and 33% respectively compared to the conventional polygeneration. The optimal polygeneration capacity using genetic algorithm achieves improvements in Primary Energy Saving, cost Saving and carbon reduction by up to 65.1%, 42.4% and 62.6% respectively. It also confirms the stability of the optimizing process by running the optimization cycles in several times and attaining the deviation by about 2%

Wei He - One of the best experts on this subject based on the ideXlab platform.

  • comparative experiment study on photovoltaic and thermal solar system under natural circulation of water
    Applied Thermal Engineering, 2011
    Co-Authors: Wei He, Yang Zhang, Jie Ji
    Abstract:

    Abstract The hybrid photovoltaic and thermal (PV/T) system can utilize solar Energy more effectively and has a higher total efficiency compared with a traditional solar collecting system and a photovoltaic (PV) module. However, there is limited experimental data on how much Energy the PV/T system can save when operating with same area of a PV plate and a solar collector simultaneously. In this paper, a comparative test rig had been set up to measure and analyze the performance of PV/T system. There were monocrystalline silicon PV/T solar collector, a traditional solar collector and a monocrystalline silicon photovoltaic plate. The PV/T collector and the traditional solar collector had the same collecting areas and solar cell covered area of the PV/T collector was the same as the area of the photovoltaic plate. The experimental results showed that the daily thermal efficiency of PV/T system was about 40%, which was about 75% of that for a traditional solar thermosiphon system, and the daily average electrical efficiency was found about 10%, which was a little lower than the photovoltaic module. But Primary-Energy Saving efficiency of the PV/T system was much higher than that of the individual PV plate and the traditional solar collector.

  • a sensitivity study of a hybrid photovoltaic thermal water heating system with natural circulation
    Applied Energy, 2007
    Co-Authors: Jie Ji, Jianping Lu, Tin-tai Chow, Wei He
    Abstract:

    A flat-box aluminum-alloy photovoltaic and water-heating system designed for natural circulation was constructed. The hybrid photovoltaic/thermal (PV/T) collector was an integration of single-crystalline silicon cells into a solar thermal collector. The product was able to generate electricity and hot water simultaneously. Outdoor tests on an improved prototype were conducted in a moderate climate zone. Then dynamic simulation runs, using a validated numerical model, were performed. These included sensitivity tests with variations of the system water mass, PV cell covering factor, and front glazing transmissivity. The test results showed that the characteristic daily Primary-Energy Saving could reach up to 65% for this system with a PV cell covering factor 0.63 and front glazing transmissivity of 0.83, when the hot water load per unit heat-collecting area exceeded 80Â kg/m2. The simulated results indicated that the higher the PV cell covering factor and the glazing transmissivity, the better the overall system performance. The effects were quantified.