| Analysis of stratified thermal storage systems: An overview HO Njoku, OV Ekechukwu, SO Onyegegbu Heat and mass transfer 50, 1017-1030, 2014 | 91 | 2014 |
| Electricity generation from a compound parabolic concentrator coupled to a thermoelectric module CA Mgbemene, J Duffy, H Sun, SO Onyegegbu | 64 | 2010 |
| Transient multidimensional second law analysis of solar collectors subjected to time-varying insolation with diffuse components SO Onyegegbu, J Morhenne Solar Energy 50 (1), 85-95, 1993 | 39 | 1993 |
| Nocturnal distillation in basin-type solar stills SO Onyegegbu Applied Energy 24 (1), 29-42, 1986 | 39 | 1986 |
| Pyrolysis of Gmelina arborea wood for bio-oil/bio-char production: physical and chemical characterisation of products. E Okoroigwe, ZL Li, T Stuecken, C Saffron, S Onyegegbu | 30 | 2012 |
| Experimental investigation of a photovoltaic-powered solar cassava dryer CN Anyanwu, OU Oparaku, SO Onyegegbu, U Egwuatu, NI Edem, ... Drying Technology 30 (4), 398-403, 2012 | 29 | 2012 |
| Heat transfer inside a horizontal cylindrical annulus in the presence of thermal radiation and buoyancy SO Onyegegbu International journal of heat and mass transfer 29 (5), 659-671, 1986 | 25 | 1986 |
| A numerical study to predict the energy and exergy performances of a salinity gradient solar pond with thermal extraction HO Njoku, BE Agashi, SO Onyegegbu Solar Energy 157, 744-761, 2017 | 23 | 2017 |
| Determination of oxidation characteristics and decomposition kinetics of some Nigerian biomass EC Okoroigwe, SO Enibe, SO Onyegegbu Journal of Energy in Southern Africa 27 (3), 39-49, 2016 | 21 | 2016 |
| Bio-oil yield potential of some tropical woody biomass EC Okoroigwe, Z Li, S Kelkar, C Saffron, S Onyegegbu Journal of Energy in Southern Africa 26 (2), 33-41, 2015 | 20 | 2015 |
| Comparison of energy, exergy and entropy generation-based criteria for evaluating stratified thermal store performances HO Njoku, OV Ekechukwu, SO Onyegegbu Energy and Buildings 124, 141-152, 2016 | 17 | 2016 |
| Second law optimization of integral type natural circulation solar energy crop dryers SO Onyegegbu, J Morhenne, B Norton Energy conversion and management 35 (11), 973-983, 1994 | 14 | 1994 |
| A large-scale facility for experimental studies of natural-circulation solar-energy tropical crop dryers. PD Fleming, B Norton, OV Ekechukwu, SC Onyegegbu, SD Probert | 12 | 1986 |
| Performance of photovoltaic cells in an equatorial climate SO Onyegegbu Solar & wind technology 6 (3), 275-281, 1989 | 11 | 1989 |
| Convective instability of rotating radiating fluids SO Onyegegbu | 11 | 1980 |
| Electricity generation from a compound parabolic concentrator coupled to a thermoelectric module CA Mgbemene, J Duffy, H Sun, SO Onyegegbu Energy Sustainability 43208, 423-432, 2008 | 9 | 2008 |
| Solar distillation of pond (muddy) water SO Onyegegbu Energy conversion and management 24 (1), 1-4, 1984 | 9 | 1984 |
| Design of preventive maintenance scheduling model for deteriorating systems PA Ozor, SO Onyegegbu Nigerian Journal of Technology 30 (3), 90-96, 2011 | 7 | 2011 |
| Normalized charging exergy performance of stratified sensible thermal stores HO Njoku, OV Ekechukwu, SO Onyegegbu Solar Energy 136, 487-498, 2016 | 6 | 2016 |
| Numerical investigation of entropy generation in stratified thermal stores HO Njoku, OV Ekechukwu, SO Onyegegbu Journal of Energy Resources Technology 140 (1), 011901, 2018 | 5 | 2018 |
