A Study of Thermodynamic Properties of Next Generation Mixture Refrigerants Including Hydrocarbons

下一代含碳氢化合物混合制冷剂的热力学性质研究

• 批准号: 12450090
• 负责人: WATANABE Koichi
• 金额: $ 9.54万
• 依托单位: Keio University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12450090/
• 关键词: Environmentally Friendly Refrigerant; Natural Refrigerant; Hydrocarbon; Alternative Refrigerant; PVTx Property; Vapor Pressure; Thermodynamic Property; Equation of State

A series of precise measurements of vapor pressures and gas-phase PVT properties of isobutene (R-600a), a hydrocarbon refrigerant, being an important component of the next generation mixture refrigerants with low environmental impact have been conducted by means of the improved Burnett apparatus, since reliable thermodynamic property information about this substance were not available. Sixteen vapor pressure data at temperatures 300-370 K have been obtained, while 48 gas-phase PVT data at 300-380 K. In addition, 9 vapor-pressure data at temperatures down to 260 K were recently obtained, whereas the measurement of temperature dependence of the cell constant of this apparatus is in progress.A density-measuring system with an aid of the vibrating-tube densimeter was newly designed and constructed, and it was then confirmed that the measurement system could provide us a satisfactory performance with rapid and precise measurements as expected. Measurements for pure water, methanol and 3 dif … More ferent MFC alternative refrigerants such as R-134a, R-125 and R-143a have been completed throughout the present research project. Additionally, similar precise density measurements have been carried out for compressed-liquid phases of HFE-245mc and HFE-143m, promising alternative candidates recently developed as next generation refrigerants, as well as for those or natural hydrocarbon refrigerants including propane (R-290) and R-600a.Concerning the analytical studies, on the other hand, a series of thermodynamic properly model with the Helmholtz-energy type equation of state which is effective for the entire fluid phase of typical natural refrigerants including R-290, R-600a and n-butane (R-600), have been developed with a universal functional form. These models developed have been published in one of the leading international journals. A significant success has also been confirmed in developing the mixing rule which does play an important role to formulate the thermodynamic property models for hydrocarbon (HC) mixtures so as to lead to those for the HC + HFC refrigerant mixtures.It should be noted that the thermodynamic property models developed by the present study for 3 HCs mentioned above have been accepted with international qualification for their forthcoming inclusion to the next version of the REFPROP, a thermodynamic property package developed by the U.S. National Institute of Standards and Technology (NIST) and being widely used on the international basis. Less

一系列对异丁烯（R-600A）的蒸气压和气相PVT性能的精确度测量，这是一种碳氢化合物制冷剂，是下一代混合物制冷剂具有低环境影响的重要组成部分，这是通过改进的burnett apperatus进行的，因为可靠的热力学性质不可用。在温度下在300-370 K处的16个蒸气压数据，而最近获得了300-380 K处的48个气相PVT数据。此外，最近获得了9个温度下至260 K时的9蒸气压力数据，而该设备的细胞量为a nevibr in Mysim inmim a and and a and a and a and a and a and a n a and a and a and a and a and a and a and a and a and a and a and a and a and a and a and a and a and a n and de蒸气数据蒸发数据。并构造，然后确认测量系统可以通过预期的快速和精确的测量为我们提供令人满意的性能。在整个研究项目中，已经完成了纯水，甲醇和3 dif的测量。此外，对于HFE-245MC和HFE-143M的压缩液阶段进行了类似的精度密度测量，承诺最近作为下一代制冷剂以及那些或天然水合物制冷剂以及包括丙烷（R-290）和R-600A.concer的protheration，在其他模型上，在其他模型上，一系列系列的替代候选者以及天然烃制冷剂的系列， Helmholtz-Energy类型的状态方程对典型天然制冷剂的整个流体相很有效，包括R-290，R-600A和N-丁烷（R-600）（R-600），已通过通用功能形式开发。这些开发的模型已发表在国际领先的期刊之一中。 A significant success has also been confirmed in developing the mixing rule which does play an important role to form the thermodynamic property models for hydrocarbon (HC) mixtures so as to lead to those for the HC + HFC refrigerant mixtures.It should be noted that the thermodynamic property models developed by the present study for 3 HCs mentioned above have been accepted with international qualification for their forthcoming inclusion to the next version of the REFPROP, a thermodynamic美国国家标准技术研究所（NIST）开发的物业包，并在国际基础上广泛使用。较少的

项目成果

Miyamoto, H., Watanabe, K.: "A Thermodynamic Equation of State for Fluid-Phase iso-Butane"to appear in the International Journal of Thermophysics. 23・2(In Press). (2002)

Miyamoto, H., Watanabe, K.：“流体相异丁烷的热力学状态方程”发表于《国际热物理学杂志》23・2（出版中）。

Kayukawa, Y., Watanabe, K.: "Pp Tx Measurements for Gas-Phase Pentafluoroethane + Propane Mixtures by the Burnett Method"Journal of Chemical and Engineering Data. 46・5. 1025-1030 (2001)

Kayukawa, Y., Watanabe, K.：“通过伯内特法测量气相五氟乙烷 + 丙烷混合物的 Pp Tx”，化学与工程数据杂志 46・5（2001 年）。

Miyamoto, H., Watanabe, K.: "A Thermodynamic Property Model for Fluid-Phase Propane"International Journal of Thermophysics. 21・5. 1045-1072 (2000)

Miyamoto, H., Watanabe, K.：“流体相丙烷的热力学性质模型”国际热物理学杂志 21・5 (2000)。

Kayukawa, Y., Watanabe, K.: "PpTx Measurements for Gas-Phase Pentafluoroethane + Propane Mixtures by the Burnett Method"to appear in the Journal of Chemical and Engineering Data. 46・5. 1025-1030 (2001)

Kayukawa, Y., Watanabe, K.：“通过伯内特法测量气相五氟乙烷 + 丙烷混合物的 PpTx”，发表于《化学与工程数据杂志》46・5 (2001)。

Miyamoto, H., Watanabe, K.: "A Thermodynamic Equation of State for n-Butane"International Journal of Thermophysics. 22・2. 459-475 (2001)

Miyamoto, H., Watanabe, K.：“正丁烷的热力学状态方程”国际热物理学杂志 22・2（2001 年）。