微燃性冷媒搭載空調機器と化石燃料系暖房機器の同時使用時におけるフィジカルハザード評価

• 今村 友彦

  諏訪東京理科大学システム工学部機械システム工学科

• 宮下 達也

  東京理科大学大学院理工学研究科機械工学専攻

• 上矢 恭子

  日本法医工学株式会社

• 森本 崇徳

  日本法医工学株式会社

• 須川 修身

  諏訪東京理科大学システム工学部機械システム工学科

書誌事項

タイトル別名

• Physical Hazard Evaluation for using Air Conditioning Systems having Low-Flammable Refrigerants with the Fossil-fuel Heating System at the Same Time

抄録

R 1234yf and R 32 are expected as the alternative refrigerants for protection of the global environment. R 1234yf and R 32 have low flammability by comparison with the other HFC refrigerants now in worldwide use. We examined the fire hazard and characteristic of HF generation in the case that a wall mounted type air conditioning system having these alternative refrigerants is used with the fossil-fuel heating systems in the same room (corresponding to 4 pieces and half of tatami mats) at the same time. Both the cases of R 1234yf and R 32, concentration of refrigerant in the room was not more than the lower flammable limit (LFL) of refrigerants even if the all amount of refrigerants leaked from an air conditioning system to the room, so the flame propagation of refrigerants was not confirmed. However, generation of HF over the permissive concentration (3 ppm) was confirmed regardless of the varieties of refrigerants including R 410A due to the contact between refrigerants and heating part in the fossil-fuel heating systems. It was experimentally confirmed that productivity of HF from R 32 per unit time and mass was comparatively larger than that of R 1234yf and R 410A.

収録刊行物

• 日本冷凍空調学会論文集

  日本冷凍空調学会論文集 29 (4), 401-411, 2012

  公益社団法人 日本冷凍空調学会

キーワード

• Refrigerant
• Combustion
• Ignition
• Physical hazard assessment
• Heating system
• Hydrogen fluoride

詳細情報

• CRID: 1390001204666525568
• NII論文ID: 130004566277
• DOI: 10.11322/tjsrae.29.401
• COI: 1:CAS:528:DC%2BC3sXnvVelsro%3D
• ISSN: 2185789X
• ISSN: 13444905
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可