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Optimization of solar energy exploitation for a neighborhood towards nearly zero energy buildings

机译：接近零能耗建筑的社区的太阳能开发优化

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The energy transition of neighborhoods towards nearly zero energy buildings (nZEBs) is fundamental to promote sustainability. The study deals with this issue by proposing a methodology to optimize energy retrofit through the exploitation of solar energy by photovoltaics. Part of a neighborhood in the city of Naples (South Italy) is investigated. The coupling between EnergyPlus and MATLAB® is used for energy modelling, simulations and retrofit optimization through a smart research method, performing a comprehensive analysis of heating, cooling and electric loads. A Pareto multi-objective approach is applied to minimize both energy consumption and global cost in order to optimize the solar energy exploitation and to achieve the nZEB standard while ensuring cost-effectiveness. Different retrofit scenarios for building envelopes and energy systems are investigated. Two optimal retrofit solutions are identified. One pursues the minimization of the neighborhood’s energy impact ensuring a PEC reduction from 116.8 kWh/m2a to 66.3 kWh/m2a with discounted payback (DPB) of around 10 years. The other solution maximizes the cost-effectiveness yielding a PEC around 83.7 kWh/m2a with a DPB of only 4 years. The outcomes offer deep insights into the potentials of energy transition for neighborhoods and guidelines for the implementation of multi-generation energy systems as well as to address public energy policies.
机译：社区向近零能耗建筑（nZEB）的能源转换对于促进可持续性至关重要。该研究通过提出一种方法来解决此问题，该方法可通过光伏利用太阳能来优化能源改造。对那不勒斯市（意大利南部）的一部分社区进行了调查。 EnergyPlus和MATLAB®之间的耦合用于通过智能研究方法进行能量建模，仿真和改造优化，从而对加热，冷却和电力负载进行全面分析。采用帕累托多目标方法来最小化能源消耗和全球成本，以优化太阳能开发并达到nZEB标准，同时确保成本效益。研究了建筑围护结构和能源系统的不同改造方案。确定了两个最佳的改造解决方案。人们力求将邻里的能源影响降到最低，以确保将PEC从116.8 kWh / m降低 2 a至66.3 kWh / m 2 具有约10年的折现回收期（DPB）。另一种解决方案可最大限度地提高成本效益，从而产生大约83.7 kWh / m的PEC 2 DPB只有4年。结果为居民社区的能源转换潜力提供了深刻的见识，并为实施多代能源系统以及解决公共能源政策提供了指导。

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