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- 赤坂 亮
- 九州ルーテル学院大学人文学部
書誌事項
- タイトル別名
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- Helmholtz Energy Equations of State for HFC and Natural Refrigerants and Their Applications to Calculations of Thermodynamic Properties
- HFC レイバイ オヨビ シゼン レイバイ ニ タイスル Helmholtz ガタ ジョウタイ ホウテイシキ ト ネツリキガクテキ セイシツ ノ ケイサン ホウホウ
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説明
This paper overviews Helmholtz energy equations of state for pure HFC and natural refrigerants. The equations of state consist of the ideal-gas part and the residual part. The ideal-gas part can be calculated from the ideal-gas isobaric heat capacity according to the ideal-gas law, and the residual part is determined empirically by fitting to experimental thermodynamic property data. Polynomial and exponential terms are used to represent the residual part. Some equations have more complex terms for accurate descriptions of critical behavior. Mixture models for applications of the pure-fluid equations of state to refrigerant mixtures are summarized. Until now, two mixture models have been developed for HFC refrigerant mixtures. This paper also discusses calculation methods for the pvT relation, vapor-liquid equilibrium, and critical point using Helmholtz energy equations of state. Few literature discusses the methods in detail, although such information is very precious to make a computer program for calculating thermodynamic properties.
収録刊行物
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- 日本冷凍空調学会論文集
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日本冷凍空調学会論文集 26 (1), 1-13, 2009
公益社団法人 日本冷凍空調学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390001204666050432
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- NII論文ID
- 10024962485
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- NII書誌ID
- AA11125910
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- ISSN
- 2185789X
- 13444905
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- NDL書誌ID
- 10257759
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可