Experimental study of thermohydraulic characteristics and irreversibility analysis of novel axial corrugated tube with spring tape inserts
| Autor: | Manoj K. Soni, Suvanjan Bhattacharyya, Murugesan Mohanraj, Debraj Sarkar, U. S. Mahabaleshwar |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
020209 energy Reynolds number 02 engineering and technology Spring (mathematics) Condensed Matter Physics 01 natural sciences Nusselt number 010305 fluids & plasmas Electronic Optical and Magnetic Materials symbols.namesake 0103 physical sciences Heat transfer Thermal Heat exchanger 0202 electrical engineering electronic engineering information engineering symbols Working fluid Tube (container) Composite material Instrumentation |
| Zdroj: | The European Physical Journal Applied Physics. 92:30901 |
| ISSN: | 1286-0050 1286-0042 |
| DOI: | 10.1051/epjap/2020200192 |
| Popis: | The current study experimentally investigates the heat transfer augmentation on the novel axial corrugated heat exchanger tube in which the spring tape is introduced. Air (Pr = 0.707) is used as a working fluid. In order to augment the thermohydraulic performance, a corrugated tube with inserts is offered. The experimental study is further extended by varying the important parameters like spring ratio (y = 1.5, 2.0, 2.5) and Reynolds number (Re = 10 000–52 000). The angular pitch between the two neighboring corrugations and the angle of the corrugation is kept constant through the experiments at β = 1200 and α = 600 respectively, while two different corrugations heights (h) are analyzed. While increasing the corrugation height and decreasing the spring ratio, the impact of the swirling effect improves the thermal performance of the system. The maximum thermal performance is obtained when the corrugation height is h = 0.2 and spring ratio y = 1.5. Eventually, correlations for predicting friction factor (f) and Nusselt number (Nu) are developed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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