Analyzing Self-Consumption and Energy Self-Sufficiency in All-Electric Zero Energy Houses with Diverse Households' Demand

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  • 多様な電力需要の世帯における全電化戸建ZEHの自家消費率及びエネルギー自給率の分析
  • タヨウ ナ デンリョク ジュヨウ ノ セタイ ニ オケル ゼン デンカ コダテ ZEH ノ ジカ ショウヒリツ オヨビ エネルギー ジキュウリツ ノ ブンセキ

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<p>This paper presents a systematic analysis of self-consumption and energy self-sufficiency rates in electrified net zero energy houses (ZEH), focusing on households with diverse electricity demands. We explored 24 scenarios, each featuring different combinations of photovoltaic capacity, storage battery capacity, and heat pump water heater operation times. Additionally, we incorporated 479 variations of household demands, derived from　measured data in a residential complex, to realistically replicate a wide range of household energy behaviors and usage patterns. Our simulation results reveal that while household demand influences self-consumption rates with a maximum variation of 0% to 18% in the inter-quartile range, facility conditions play a more significant role. Conversely, household demand is a more dominant factor in determining energy self-sufficiency rates.</p>

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