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61.6%2年目累積削減率（2017年7月–2018年6月）2nd year cumulative reduction rate (July 2017 to June 2018) 3年目累積削減率（2018年7月–2019年6月）3rd year cumulative reduction rate (July 2018 to June 2019）1年目累積削減率（2016年7月–2017年6月）1st year cumulative reduction rate (July 2016 to June 2017) 目標削減率60%Target reduction rate 60% 基準年比竣工経過年別 一次エネルギー累積削減率Cumulative Energy Reduction Rate 80%75%70%65%60%55%50%45%40%35%30%62.0%63.0%63.2%62.8%61.5%60.1%58.8%58.4%58.6%60.2%57.3%60.7%62.0%62.1%61.6%59.9%58.4%57.0%56.8%57.2%57.9%58.6%58.6%58.5%58.5%58.4%57.0%55.7%54.9%54.6%55.0%55.4%56.4%59.2%789101112123［月｜Month］456冷熱負荷Cold load空調温熱負荷Air conditioning thermal load給湯負荷Hot water supply load プラントCOP（蒸気システム除く）Plant COP (excluding steam system)負荷熱量｜Load Heat Quantity [GJ]40,00035,00030,00025,00020,00015,00010,0005,000078910111212345678910111212345678910111212345620162017201920182.01.81.61.41.21.00.80.60.4COP1.701.89竣工1年目（期間全体：1.47）1st year after completion (period overall: 1.47)竣工2年目（期間全体：1.57）2nd year after completion (period overall: 1.57)既設 0.73Existing 0.73 1.86竣工3年目（2018年7月─2019年5月：1.63）3rd year after completion (July 2018 to May 2019: 1.63) 蒸気Steam 給湯Hot water supply冷熱源合計Total cooling capacity6,956Rt屋上Rooftop屋上Rooftop設備階Mechanical floor設備階Mechanical floor地下3階3rd basement floor地下3階3rd basement floor冷水｜Chilled water 1,194Rt温水｜Hot water 3,080kW冷水Chilled water蒸気（暖房）Steam (heating)温水Hot water蒸気Steam 貯湯槽Hot water storage tankブラインターボBrine chillers給湯Hot water supply蒸気吸収式Steam absorption chillers蒸気ボイラーSteam boilersタービン式コジェネCHP (Gas turbines)蒸気ボイラーSteam boilers温水ボイラーWater Heatersエンジン式コジェネEngine cogeneration貯湯槽Hot water storage tank発電Power generation1,000kW×2蒸気（ホテル・劇場暖房のみ）Steam 高温水High temperature water高温水High temperature water蒸気吸収式Absorption chillers井水HPGeothermal heat pump熱回収HPHeat recoveryheat pumpINVターボVFD chillers固定速ターボFixed speed turbo冷水Chilled water温水Hot water空冷HPAir cooled heat pump 冷熱源合計Total cooling capacity8,660Rt太陽熱集熱パネル100㎡Solar thermal collectors l 100㎡2ton/h×41,163kW×4冷水Chilled water300Rt冷水Chilled water152Rt温水Hot water596kW冷水Chilled water270Rt温水Hot water1,161kW冷水Chilled water840Rt×4冷水Chilled water840Rt×2発電Power generation2,100kW×2蒸気Steam10ton/h×3冷水Chilled water1,665Rt×4冷水｜Chilled water600Rt氷｜Ice400Rt×2改修前｜Before improvements改修後｜After improvements熱源のシステム変更図│Heat Source System Conversion Diagram効率のよいインバータターボ冷凍機（冷水）と空冷ヒートポンプチラー（温水）を選定。熱損失の大きい蒸気システムからの脱却により、熱源容量を20%削減した。また、太陽熱集熱パネルと井水ヒートポンプも導入した。Highly ecient VFD chiller (chilled water) and air-cooled heat pump chiller (hot water) were selected. e heat source capacity was reduced by 20 percent by eliminating the steam system with high heat loss. In addition to solar thermal collectors, a geothermal heat pump system was installed.COP（エネルギー消費効率）の経過｜Change in coecient of performance (energy use eciency)エネルギー削減率｜Energy reduction rate142019 AUTUMN40Feature | WORKS