A regressive model for dynamic instabilities during condensation of pro-ecological environmentally friendly refrigerant R1234yf
| Autor: | Waldemar Kuczyński, Aleksander Denis |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Fluid Flow and Transfer Processes
Pressure wave Mechanical Engineering Condensation 02 engineering and technology Mechanics 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Environmentally friendly 010305 fluids & plasmas Refrigerant 0103 physical sciences Environmental science 0210 nano-technology |
| Zdroj: | International Journal of Heat and Mass Transfer. 131:822-835 |
| ISSN: | 0017-9310 |
| DOI: | 10.1016/j.ijheatmasstransfer.2018.11.099 |
| Popis: | The following paper presents a draft of a generalised model for velocities of dynamic instabilities (pressure wave vp and condensation front vT). This regressive model is based on experimental data obtained during the condensation of refrigerants in tubular minichannels. The dimensional analysis procedure was conducted according to the Π-Buckinghama theorem. The first part presents experimental data as well as a mathematical model for the pro-ecological refrigerant R1234yf designated as a substitute for the R134a refrigerant that is currently being phased-out. The research was conducted using tubular minichannels with ID = 1.44, 2.3, 3.3 mm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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