R134a冷媒を用いた冷蔵庫における圧縮機材料と冷凍回路の信頼性についての考察

DOI

書誌事項

タイトル別名
  • Study on the Materials for Compressor and Reliability of Refrigeration Circuit in Refrigerator with R134a Refrigerant

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説明

R134a was selected as the alternative refrigerant for R12 because of the similar thermodynamic properties with R12. But refrigeration oil for R12 couldn't be used for R134a because of the immiscibility with R134a. To solve this problem we researched miscible oil with R134a and selected polyol ester oil (POE) as refrigeration oil. But we found sludge deposition into capillary tube after life test of refrigerator with POE and detected metal soap, decomposed oil and alkaline ions by analysis of sludge. This results was proof of phenomena like oil degradation, precipitation of process materials and wear of compressor. Therefore we improved stability and lubricity of POE, reevaluated process materials and contaminations in refrigerating circuit. In this paper we discuss newly developed these technologies and evaluation results of it by life test of refrigerator.

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詳細情報 詳細情報について

  • CRID
    1390001204667350912
  • NII論文ID
    130004565936
  • DOI
    10.11322/tjsrae.19.339
  • COI
    1:CAS:528:DC%2BD3sXhsFOnt7o%3D
  • ISSN
    2185789X
    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

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