省エネ大賞受賞技術開発の軌跡 (32) Trajectory of Energy Conservation Grand Prize-winning Technology Development (32)
第1章 もったいない無駄と必要な無駄
1.5.4 リモコン家電の待機消費電力と節電方法 (2023.10.01 – 追記)
1.5.4.1 エアコンの節電量(料)、及び待機電力消費量減少技術の歴史
リモコンでオン・オフできる電気製品はすべて電源に接続されている場合、オフの状態で常時、待機電力を消費し続けています。
リモコン家電の一つ、エアコンを長期に使用しないシーズンの春と秋にそのプラグをコンセントから抜いて節電できる日本国内での年間総節電量と総節電料は以下の通りです。
年間総節電量:37.4億kWh、年間総節電料:1,346億円
(日本、エアコンのみ)
算定基礎:エアコン未使用時の待機消費電力量を1Wh、コンセントからプラグを抜く月数を年間で5ヶ月、日本の世帯数を5000万世帯、エアコンの日本国内世帯普及率を86%、世帯の使用平均台数を2台、電気料金(円)を36円/kWhとします。
なお、節電虫を開発した1980年以降、2023年10月時点までの約40年を小生の技術開発を中心に大まかに振り返ると以下の通りです。
1. ~1990 待機電力消費は無視されていた。
2. 1990~2000 メカニックな方法で待機電力消費を低減化。
(節電虫技術開発、省エネ大賞受賞)
3. 2000~2020 デジタル技術で待機電力消費を低減化。
(節電虫技術、NTT―AT社で採用)
4. 2020~ デジタル技術とメカニックな方法で待機電力消費のゼロ化。 (節電コンセント開発)
待機電力消費量の減少技術は第四世代、すなわち、ゼロ化の時代に入りました。
続く
1.5.4 Standby power consumption of remote-controlled appliances and power saving methods (2023.10.01 - Added)
1.5.4.1 History of technologies to reduce standby power consumption
All electrical products with remote controls continue to consume standby power when connected to a power source, even when turned off.
The annual total amount of electricity saved in Japan by unplugging one of the remote-controlled home appliances, the air conditioner, from the outlet in spring and fall, when it is not used for a long period of time, and the electricity saving amount and its charge are as follows.
Total annual energy savings: 3.74 billion kWh,
Total annual electricity savings in yen: 134.6 billion yen
(Only in case of air conditioners in Japan)
Basis for calculation: Standby power consumption when air conditioners are not in use is assumed to be 1Wh, the number of months the plug is unplugged from the outlet is 5 months in a year, the number of Japanese households is 50 million, the Japanese domestic household penetration rate for air conditioners is 86%, the average number of air conditioners used by a household is 2 units, and the electricity rate (yen) is 36 yen/kWh.
Let me look back roughly 40 years from 1980, when we developed the energy-saving device named Setsuden-mushi, to October 2023, focusing on my own electricity saving technology development as following.
1. – 1990; Standby power consumption was ignored.
2. 1990 – 2000; Standby power consumption was reduced by mechanical methods. (Developed electricity-saving technology and won the Energy Conservation Grand Prize)
3. 2000 - 2020; Standby power consumption is reduced by digital technology. (Power-saving technology adopted by NTT-AT)
4. 2020 - ; Zero standby power consumption by the combination of digitaltechnology and mechanical methods
Technologies for reducing standby power consumption have entered the fourth generation, which is the era of zeroing out standby power consumption.
To be continued
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