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・ 空調容量の見直しによる容量の ミニマム化（人員、コンセント負荷）・ 人感による空調ON/OFF・ Minimization of HVAC capacity through reassessment based on occupancy and plug load・ Occupancy-based HVAC on/off ・ トイレの排気ファン強弱運転 換気量の低減、DCファンによる高効率化・ トイレなどの衛生器具を節水型へ更新・ Variable-speed operation of toilet exhaust fans, reduced ventilation volume, and improved efficiency using DC (direct current) fans・ Upgrading sanitary fixtures such as toilets to water-saving models・ 電気室の室温設定緩和・ 井水熱利用によるエアコンレス・ Relaxed room temperature settings ・ No air conditioning required thanks to groundwater heat exchange utilization12122025 SUMMER63Feature | INTRODUCTIONcontrolin the electrical rooms中温水からの2段冷却による除湿用低温冷水製造Production of low-temperature chilled water for dehumidification via two-stage cooling using medium-tempera-ture water倉庫など必要量に応じた換気運転（温度、湿度を加味した間欠運転）Demand-based ventilation control in facilities such as warehouses, with intermittent operation based on temperature and humidity屋上空調機の外調機化、中温水利用、ファンを利用したナイトパージ、外気冷房、すべての給排気の全熱交換器Conversion of rooftop air conditioning units into outdoor air-handling units using medium-temperature water; night purge ventilation using fans; outdoor air cooling; total heat exchangers for all supply and exhaust airflowsターボ冷凍機Turbo chiller井水ヒートポンプGroundwater source heat pump太陽光発電設置Installation of solar power generation systems窓・外壁の高断熱、高遮熱、高気密化High insulation, high solar heat shielding, and airtight design of windows and exterior walls照明のLED化、各種制御LED lighting implementation with various control systems自然換気（手動窓開閉）Natural ventilation via manual window operation人員に応じたCO2CO2-based ventilation control according to occupancy levels1階エントランスなど空調吹出位置変更による温熱環境改善Improvement of thermal comfort through relocation of air outlets (e.g., at ground floor entrances)井水熱利用Groundwater heat utilization05「建築物ストック統計」、「脱炭素社会に向けた住宅・建築物の省エネ対策等あり方検討会」資料、「非住宅建築物の外皮・設備設計仕様とエネルギー消費性能の実態調査」など。「建築物のエネルギー消費性能の向上等に関する法律」において、建築物の一次エネルギー消費量の基準として用いられ、値が小さいほど、エネルギー効率が良い建物であると評価される。省エネルギー手法の参考事例｜Examples of Energy-Saving StrategiesBuilding Energy Indexの略で、建築物のエネルギー消費効率を示す指標。制御Ministry of Land, Infrastructure, Transport and Tourism. Statistics on Existing Building Stock compilation, reports from the Committee for Energy Efficiency Measures in Housing and Buildings for a Decarbonized Society, and the Survey on Building Envelope and System Design Specifications and Energy Consumption Performance in Non-Residential Buildings.Building Energy Index (BEI) represents a building’s energy consumption efficiency. Under Japan’s Building Energy Efficiency Act, BEI is used as a standard for evaluating the primary energy consumption of buildings: the lower the BEI value, the higher the building’s energy efficiency.