| DOI: | 10.1016/j.jcou.2017.04.007
|
| Scopus记录号: | 2-s2.0-85018942425
|
| 论文题名: | Improved equation of CO2 Joule-Thomson coefficient |
| 作者: | Wang J.; Wang Z.; Sun B.
|
| 刊名: | Journal of CO2 Utilization
|
| ISSN: | 22129820
|
| 出版年: | 2017
|
| 卷: | 19 | | 起始页码: | 296
|
| 结束页码: | 307
|
| 语种: | 英语
|
| 英文关键词: | CO2
; Error analysis
; Joule-Thomson coefficient
; Phase state
; State equation
|
| Scopus关键词: | Equations of state
; Error analysis
; Errors
; Forecasting
; Liquids
; Calculation of temperature
; Engineering applications
; Experimental apparatus
; Joule-Thomson coefficient
; Phase state
; Prediction equations
; State equations
; Temperature and pressures
; Carbon dioxide
|
| 英文摘要: | The Joule-Thomson coefficient is a key parameter in the calculation of temperature and pressure and the prediction of the phase state and physical parameters. However, owing to different temperature and pressure conditions, CO2 presents different states: vapor, liquid, supercritical, etc. A set of experimental apparatus for the measurement of the CO2 Joule-Thomson coefficient measurement of was designed, which accurately measures the Joule Thomson coefficient of CO2 in the ranges 283-423 K, 2-40 MPa. Based on the experimental results, the absolute average errors of the CO2 Joule-Thomson coefficient predicted by the state equations are relatively low in vapor and supercritical states, but larger errors appear near the CO2 critical point and liquid state. According to the study findings, the CO2 Joule-Thomson coefficient is affected by the phase and varies dramatically at vapor, liquid, and supercritical states. However, the commonly used CO2 Joule-Thomson coefficient prediction methods do not exhibit good accuracy at all phase states. In order to accurately predict the CO2 Joule-Thomson coefficient at different phase states, a 25-parameter CO2 Joule-Thomson coefficient prediction equation is proposed in a temperature range of 283-423 K and a pressure range of 2-40 MPa, which can accurately describe the drastic change near the critical point. The error analysis of the CO2 Joule-Thomson coefficient experimental data determined that the absolute average errors at the vapor, liquid, and supercritical states are 1.52%, 4.59% and 3.08%, respectively. This work is expected to facilitate the engineering applications of CO2. © 2016 Published by Elsevier B.V. |
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/52750
|
| Appears in Collections: | 影响、适应和脆弱性
|
|
There are no files associated with this item.
|
| Recommended Citation: | |
Wang J.,Wang Z.,Sun B.. Improved equation of CO2 Joule-Thomson coefficient[J]. Journal of CO2 Utilization,2017-01-01,19
|
|
|