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Analysing Different microgeneration Systems for Portuguese Residential Sector

Journal of Energy and Power Engineering 2013年第2期7卷 250-258页

作者： Miguel Rodrigues Manuel Valdez Dulce Coelho College of Engineering of Coimbra (ISEC) Coimbra 3030-199 Portugal Institute for Systems Engineering and Computers at Coimbra (INESC Coimbra) Coimbra 3000-033 Portugal

The main purpose of this article is to perform a technical-economic analysis of different microgeneration systems （photovoltaic and wind turbine systems） that can be installed in a single-family house. One of the strategies for improving energy performance of buildings is the installation of microgeneration systems. This will enable Portugal to meet the goal regarding the share of renewable sources on gross final energy consumption imposed by the European Commission climate change and energy package for 2020. The analysis of four different micro-generation systems will take into account the local availability of renewable resources and market technologies and the new Portuguese law concerning microgeneration to promote renewable energy sources in households. The Portuguese microgeneration legal framework is also highlighted.

关键词： microgeneration photovoltaic systems renewable energy systems wind energy.

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Analysis by Indicators Performance of the Conceptual Structures mCCHP-SE Using Renewable Energy Sources

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Journal of Energy and Power Engineering 2012年第10期6卷 1597-1604页

作者： Nicolae Badea Marcel Oanca Ion Paraschiv Ion Voncila Department of Automation and Electrical Engineering Dunarea de Jos University Galati 80000 Romania

This paper refers to an integrated mCCHP （micro-combined cooling heat and power） systems dedicated for isolated residents with energetic independence. The only energy sources are wood pellet and solar energy. The proposed trigeneration system is based on mCHP （micro-combined heat and power） unit with Stirling engine, photovoltaic panels, thermal solar collector and pellet boiler. The proposed mCCHP system utilizes the exceeding amount of heat in the summer for producing the necessary cooling. A residential building with known energy consumption is determined load curves that must be covered by mCCHP system. The paper analyzes four structures of trigeneration systems with thermal activation chiller and two structures of trigeneration systems with mechanical compression chiller. Performance indicators are determined based on energy balance equations for each variant. It compares the performances and establishes the best option.

关键词： microgeneration trigeneration residential building renewable energy.

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Economic Feasibility Evaluation of the Use of Wind Microgenerator in Multifamily Building in Southern Brazil

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Journal of Civil Engineering and Architecture 2022年第10期16卷 513-518页

作者： Lauro AndréRibeiro Marcos Vinícius de Lima Wilson Levy Braga da Silva Neto Marília Marton Correia Thaísa Leal da Silva Postgraduation Program of Architecture and Urbanism School of Engineering and Applied SciencesATITUS EducaçãoRua Senador Pinheiro304Passo Fundo/RS 99070-220Brazil Postgraduation Program in Smart and Sustainable Cities at Universidade Nove de Julho Rua Vergueiro235/249-LiberdadeSão Paulo/SP 01525-000Brazil

There is a growing worldwide interest in the potential of using existing buildings to generate their own energy as a way to alleviate problems related to the exhaustion of energy resources,environmental degradation and the constant increase in energy-related *** the distributed electricity generation solutions on the market today,wind energy can be a solution for many existing city buildings ***,the objective of this article is to investigate the economic viability of generating wind energy in a multifamily building located in Southern Brazil,(city of Passo Fundo),seeking to supply the condominium electric energy for the period of one year of consumption with a renewable *** this end,the energy demand of the condominium and the energy generation of the wind turbine were taken into account to calculate the economic viability of the *** results showed a positive NPV(net present value)demonstrating the economic feasibility of carrying out such an *** IRR(internal rate of return)was 15.22%and the return on investment(payback)occurs in 7.88 years.

关键词： Wind energy microgeneration renewable energy economic analysis

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A modelling study for the integration of a PEMFC microCHP in domestic building services design

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建筑节能(中英文) 2018年第9期 136-136页

作者： Alexandros Adam Eric S.Fraga Dan J.L.Brett 侯恩哲《建筑节能》杂志社

Fuel cell based micro-combined heat and power( CHP) units used for domestic applications can provide significant cost and environmental benefits for end users and contribute to the UK 's 2050 emissions target by reducing primary energy consumption in dwellings. Lately there has been increased interest in the development of systematic methods for the design of such systems and their smoother integration with domestic building services. Several models in the literature,whether they use a simulation or an optimisation approach,ignore the dwelling side of the system and optimise the efficiency or delivered power of the unit. However the design of the building services is linked to the choice of heating plant and its characteristics. Adding the dwelling's energy demand and temperature constraints in a model canproduce more general results that can optimise the whole system,not only the micro-CHP unit. The fuel cell has various heat streams that can be harvested to satisfy heat demand in a dwelling and the design can vary depending on the proportion of heat needed from each heat stream to serve the energy demand. A mixed integer non-linear programming model( M INLP) that can handle multiple heat sources and demands is presented in this *** methodology utilises a process systems engineering approach. The model can provide a design that integrates the temperature and water flowconstraints of a dwelling's heating system with the heat streams within the fuel cell processes while optimising total CO2 emissions. The model is demonstrated through different case studies that attempt to capture the variability of the housing stock. The predicted CO2 emissions reduction compared to a conventionally designed building vary from 27%to 30%and the optimum capacity of the fuel cell ranges between 1. 9 kW and3. 6 kW. This research represents a significant step towards an integrated fuel cell micro-CHP and dwelling design.

关键词： Fuel cell Residential microgeneration Energy demand

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