Consideration of Sludge Formation in HFC-134a / Polyol Ester oil Refrigeration System
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- YAMAMOTO Tsutomu
- Sanyo Electric Co., Ltd. Commercial Equipment Systems Development Center
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- YAMAMOTO Tethuya
- Sanyo Electric Co., Ltd. Commercial Equipment Systems Development Center
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- SIMIZU Yasuhiko
- Sanyo Electric Co., Ltd. Commercial Equipment Systems Development Center
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- NAKAYAMA Yoshinori
- Sanyo Electric Co., Ltd. Vending Machine Div.
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- TAKIZAWA Kikuo
- Sanyo Electric Co., Ltd. Commercial Equipment Systems Development Center
Bibliographic Information
- Other Title
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- HFC-134a/ポリオールエステル油の冷凍回路におけるスラッジ生成に関する考察
- HFC-134a ポリオールエステルユ ノ レイトウ カイロ ニ オケル スラ
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Abstract
A refrigeration test employing HFC-134a and polyol ester oil was carried out in order to make clear the causes of the sludge formation in the capillary tube. Compressors used were two types: a hermetic reciprocating compressor and a rotary compressor. Installed dryer contained desiccant of the compound zeolite type.<br>The results showed that the amount of capillary sludge increased as the compressor temperature rose. The capillary sludge was determined to consist of desiccant and metal dust for the reciprocating compressor, and of tar-like substance for the rotary compressor. Thermal stability test which was used to check the degree of deterioration of the ester oil, suggested that the presence of desiccant and high compressor temperature might produce tar-like substance by the break down and polymerization of the ester oil. In addition, it was confirmed that factors affecting the sludge formation were the dirtiness of the refrigeration circuit for the reciprocating compressor, and the presence of desiccant, for the rotary compressor.
Journal
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- Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers
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Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 13 (2), 167-173, 1996
Japan Society of Refrigerating and Air Conditioning Engineers
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Details 詳細情報について
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- CRID
- 1390282679642992896
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- NII Article ID
- 10002713643
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- NII Book ID
- AN10035654
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- ISSN
- 09100040
- 2185789X
- 13444905
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- NDL BIB ID
- 4020803
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed