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Effects of refrigerant circuiting of fin-and-tube condenser on performances of an inverter air conditioner using ozone-friendly refrigerants as alternatives to R-22 |
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| รหัสดีโอไอ | |
| Title | Effects of refrigerant circuiting of fin-and-tube condenser on performances of an inverter air conditioner using ozone-friendly refrigerants as alternatives to R-22 |
| Creator | 1. Pongsakorn Sarntichartsak 2. Pongsakorn Kaewcholkram 3. Sirichai Thepa |
| Publisher | Joint Graduate School of Energy and Environment |
| Publication Year | 2557 |
| Keyword | alternative refrigerant, condenser, inverter, modeling, refrigerant path arrangement |
| Abstract | This paper presents the investigation of the proper refrigerant circuiting in the finned tube condenser for an inverter air conditioner. The experimental study was carried out with four coil configurations using R-22, R-407C, R-417A, R-404A and R-507 under a variety of refrigerant flow conditions. The test results indicate that refrigerant path arrangement affects the performance of variable capacity system significantly. The efficiency of retrofitted system could be improved by using the inner-split configuration with R-417A for a wide range of frequency, although Z-type path and upstreamsplit configurations would give better performances at low and high ranges of frequency, respectively. The finned-U tube models were developed using tube-by-tube and segment-by-segment algorithms comparatively. The simplified model with tube-by-tube method can predict capacities with acceptable accuracy level. |
| ISBN | 978-616-92228-1-1 |
