NJ63

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EB/JMnoitpmusnocygrene]raey・m/JMI²[][①②③④⑤⑥trttit2025 SUMMER63Feature | WORKS etar年2・myramirP｜1： 名執一雄［ナトリ光房］／KazuoNaori[SudoNaori]Phoogaphy位単原費消ーギルネエ次一そのほかOther 昇降機Elevators空調機Air-conditioning unit OAGOA2,250CMH2,250CMH空調機械室Machine room 空調機Air-conditioning unit外気量増強外気量増強外気冷房外気冷房Increased outdoor Increased outdoor air volume / ambient air air volume / ambient air coolingcoolingOAGOA3,700CMH3,700CMH空調機械室Machine room 空調Air conditioning ① 基準値 Reference value② 改修前 Pre-renovation③ 改修後（竣工時仕様） Post-renovation (as-built specification)④ 検討Case-1：昇降機電力回生仕様に改修 Case Study 1: Elevator upgrade with ⑤ 検討Case-2：太陽光発電設置 Case Study 2: Installation of photovoltaic panels⑥ 検討Case-3：純水素型燃料電池設置 Case Study 3: Installation of pure hydrogen 換気Ventilation 冷却塔Cooling tower凡例｜KeyOA (Outdoor air)：外気EA (Exhaust air)：排気OAG (Outside air grille)：給気口SA (Supply air)：給気RA (Return air)：還気EAG (Exhaust air grille)：排気口VAV (Variable air volume)：可変風量方式排気ファンExhaust fan空冷ヒートポンプチラー（EHP）Air-cooled heat pump chiller廊下、WC｜Corridor, WC 照明LED化、人感センサ、ファン高効率化、給湯機更新（小容量化）、自動水栓化LED lighting, motion detectors, high-efficiency fans, downsized water heater, automatic faucetsファンコイルユニットFan coil unit 0.80.750.70.650.60.550.51,5001,3001,1009007005003001000-100改修前Before renovation改修後After renovationregenerative drive systemfuel cellsBELSランク｜BELS rating★★★★★★★★★★★★★改修前比27%減27 percent reduction compared to pre-renovation 給湯Hot water supply 照明Lighting 吸収式冷温水機Absorption chiller-heaterガス｜GasRAEAGSAEAWCブースなどWC stalls and other facilities 廊下、WCCorridor, WC 変圧器高効率化High-efficiency transformer 電気｜Electric powerRAEAG照明LED化LED lighting upgradeEAWCブースなどWC stalls and other facilitiesSA廊下、WCCorridor, WC ★★★★★★★★★★効率化設備High-efficiency equipment 水｜WaterSAファンコイルユニットFan coil unit専有部Tenant area熱源効率化変流量・大温度差送水Improved heat source efficiency / variable flow, wide temperature differential water supply2コイル型空調機による温度制御性向上2コイル型空調機による温度制御性向上Enhanced temperature control Enhanced temperature control with two-coil air handling unitswith two-coil air handling unitsSA専有部Tenant area 11改修前後の一次エネルギー消費量比較。昇降機改修、太陽光発電・燃料電池導入なども検討したが、費用対効果から採用は見送った。省エネルギー性を向上させた、主な設備項目のイメージ図。外気取入れ部のガラリを改造し、外気導入量の増強を行った。外気冷房制御も導入している。また改修後は2コイル型の空調機とし、方位別に温度制御ができるようにした。Comparison of primary energy consumption before and after renovation. Upgrades such as elevator modernization, photovoltaic panel installation, and the introduction of fuel cells were also considered, but after cost-effectiveness evaluations, it was determined they should not be adopted. Illustrative diagram of key equipment upgrades for improved energy efficiency. The outside air grilles at the outdoor air intakes were modified to increase the volume of outdoor air introduced into the building. An ambient air-cooling control system was also implemented. After the renovation, the air conditioning system was upgraded to a two-coil type, allowing for temperature control based on the orientation of the spaces used.