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Browsing by UP Author "Ewim, Daniel Raphael Ejike"
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Ewim, Daniel Raphael Ejike; Meyer, Josua P.; Noori Rahim Abadi, Seyyed Mohammad Ali
(Elsevier, 2018-08)
The purpose of this study was to present the heat transfer coefficients and flow patterns during the condensation of R134a inside an inclined smooth tube at low mass fluxes and different temperature differences (the ...
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Ewim, Daniel Raphael Ejike; Meyer, Josua P.
(3rd Southern African Solar Energy Conference, South Africa, 11-13 May, 2015., 2015)
Paper presented to the 3rd Southern African Solar Energy Conference, South Africa, 11-13 May, 2015.
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Onyiriuka, E.J.; Obanor, A.I.; Mahdavi, Mostafa; Ewim, Daniel Raphael Ejike
(Elsevier, 2018-11)
It is essential to investigate the appropriate model for simulating nanofluid flow for different flow regimes because, at present, most previous studies do not agree with each other. It was, therefore, the purpose of this ...
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Meyer, Josua P.; Ewim, Daniel Raphael Ejike
(Elsevier, 2018-02)
Until now, no study that systematically investigated the influence of low mass fluxes and temperature differences on condensation heat transfer coefficients has been conducted. Thus, the purpose of this study was to measure ...
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Adelaja, Adekunle O.; Ewim, Daniel Raphael Ejike; Dirker, Jaco; Meyer, Josua P.
(Elsevier, 2019-12)
This paper presents experimental heat transfer and pressure drop measurements during the condensation of R134a at a mean saturation temperature of 40 °C inside a microfinned copper tube with an inner diameter of 8.92 mm ...
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Adelaja, Adekunle O.; Ewim, Daniel Raphael Ejike; Dirker, Jaco; Meyer, Josua P.
(Elsevier, 2020-10)
To date, there has been no robust model that can satisfactorily predict the condensation heat transfer coefficients in smooth tubes when oriented at some angles other than horizontal and vertical. Therefore, it was the ...
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Ewim, D.R.E. (Daniel); Mehrabi Mehdi, M.; Meyer, Josua P.
(Taylor and Francis, 2021)
In this study, in-tube condensation was conducted for mass fluxes of 100, 75 and 50 kg/m2s, and temperature differences of 1, 3, 5, 8 and 10 °C. Measurements and flow regimes were captured at various mean vapor qualities ...
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Onyiriuka, E.J.; Ewim, Daniel Raphael Ejike; Ighodaro, O.O.; Adelaja, A.O.; Ewim, D.R.E. (Daniel); Bhattacharyya, S.
(Elsevier, 2019-09)
In this study, the heat transfer characteristics of a new class of nanofluids made from mango bark was numerically
simulated and studied during turbulent flow through a double pipe heat exchanger. A range of volume fractions ...
