Abdul Jabbar N. Khalifa

@nahrainuniv.edu.iq

College of Engineering, Mechanical Engineering Department
College of Engineering, Mechanical Engineering Department

Abdul Jabbar N. Khalifa


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https://researchid.co/akhalifa

EDUCATION

PhD Mechanical Engineering, Cardiff University, U.K.

RESEARCH INTERESTS

Heat transfer, Renewable Energy
3119

Scholar Citations

26

Scholar h-index

38

Scholar i10-index

RECENT SCHOLAR PUBLICATIONS

  • Assessing The Impact of Transforming Solar Panels from Photovoltaic to Thermal Photovoltaic Systems Within the Iraqi Climate and Studying the Effect of Force Convection
    MK Ahmed, AJN Khalifa
    Sustainable Engineering and Technological Sciences 1 (01), 34-43 , 2025
    2025
    Citations: 2
  • Transforming Traditional Photovoltaic Panels into Thermal/ Photovoltaic Panels Incorporating Composite-Phase Change Materials
    MK Ahmed, AJN Khalifa
    Al-Nahrain Journal for Engineering Sciences 27 (3), 320-327 , 2024
    2024
    Citations: 1
  • Improving the Thermal Properties of Phase Change Materials Using Different Types of Additives: A Review
    MK Ahmed, AJN Khalifa
    Library Progress International 44 (2), 1475-1499 , 2024
    2024
    Citations: 1
  • PV And PV/T Efficiency Enhancement Using Different Materials: A Review
    MK Ahmed, AJN Khalifa
    Library Progress International 44 (2), 1512-1550 , 2024
    2024
    Citations: 2
  • Applications of phase change materials in solar water heating systems: A review
    YF Taha, AJN Khalifa
    World Journal of Advanced Engineering Technology and Science 8 (2), 78-85 , 2023
    2023
    Citations: 8
  • Experimental investigation of the evacuated tube under Iraqi weather conditions utilizing first and second laws efficiency
    YF Taha, AJN Khalifa
    Global Journal of Engineering and Technology Advances 14 (3), 25-32 , 2023
    2023
  • Modeling of the charging process of an evacuated tube using CFD in the climatic conditions of Iraq
    YF Taha, AJN Khalifa
    International Journal of Latest Engineering and Management Research 8 (2 … , 2023
    2023
  • TEMPERATURE STRATIFICATION IN A THERMAL STORAGE TANK: THE EFFECT OF FLOW RATE AND ASPECT RATIO
    FA KHAMMAS, AT MUSTAFA, AJN KHALIFA
    Journal of Engineering Science and Technology 16 (2), 1066 - 1081 , 2021
    2021
    Citations: 5
  • Optical Properties of Carbon Doped by Nano Particle Titanium Dioxide to Enhance Solar Energy Absorption
    RN Abed, NK Al-Sahib, AJN Khalifa
    Nanomedicine & Nanotechnology Open Access 5 (2), 1-9 , 2020
    2020
  • Energy Gap Demeanor for Carbon Doped with Chrome Nanoparticle to Increase Solar Energy Absorption
    RN Abed, NK Al-Sahib, AJN Khalifa
    Progresss in Color, Colorants and Coatings 13 (3), 143-154 , 2020
    2020
    Citations: 7
  • Optical Study to Doping Carbon With TiO2 That Utilizing in Thermal Concentration
    RN Abed, NK Al-Sahib, AJN Khalifa
    Oriental Journal of Physical Sciences 2 (2), 109-113 , 2017
    2017
    Citations: 5
  • Utilizing nano-material in selective surfaces to scalable up the absorptivity
    RN Abed, NK Al-Sahib, AJN Khalifa
    International Journal of Research in Engineering and Innovation 1 (3), 142-149 , 2017
    2017
    Citations: 3
  • Comparison of Heat Transfer Coefficients in Free and Forced Convection using Circular Annular Finned Tubes
    AJN Khalifa, IRA Almousawi
    International Journal of Application or Innovation in Engineering … , 2016
    2016
    Citations: 18
  • Effect of parabolic solar energy collectors for water distillation
    T Arunkumar, R Velraj, A Ahsan, AJN Khalifa, S Shams, D Denkenberger, ...
    Desalination and Water Treatment 57 (45), 21234-21242 , 2016
    2016
    Citations: 44
  • Effect of Volume Fraction of γ‐Al 2 O 3 Nanofluid on Heat Transfer Enhancement in a Concentric Tube Heat Exchanger
    AJN Khalifa, MA Banwan
    Heat Transfer Engineering 36 (16), 1387-1396 , 2015
    2015
    Citations: 26
  • Natural convection heat transfer from a single and multiple heated thin cylinders in water
    AJN Khalifa, ZA Hussien
    Heat and Mass Transfer 51 (11), 1579-1586 , 2015
    2015
    Citations: 12
  • Indoor tests on the effect of wind speed on still performance
    AJN Khalifa, MAW Ali
    INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENT 6 (3), 299-308 , 2015
    2015
    Citations: 17
  • Natural convection in a room with two opposite heated vertical walls
    A Saad, AJN Khalifa
    Journal homepage: www. IJEE. IEEFoundation. org 6 (1), 81-86 , 2015
    2015
    Citations: 1
  • Natural Convection Heat Transfer from a Heat Sink with Fins of Different Configuration
    M Ahmed, AJN Khalifa
    International Journal of Innovation and Applied Sciences 9 (3), 1043 , 2014
    2014
    Citations: 19
  • Indoor tests to investigate the effect of brine depth on the performance of solar still
    MAW Ali, JN Khalifa
    International Journal of Energy and Environment (Print) 4 , 2013
    2013
    Citations: 4

MOST CITED SCHOLAR PUBLICATIONS

  • Validation of heat transfer coefficients on interior building surfaces using a real-sized indoor test cell
    AJN Khalifa, RH Marshall
    International Journal of Heat and Mass Transfer 33 (10), 2219-2236 , 1990
    1990
    Citations: 303
  • Natural convective heat transfer coefficient—a review. I. Isolated vertical and horizontal surfaces
    AJN Khalifa
    Energy conversion and management 42 (4), 491-504 , 2001
    2001
    Citations: 287
  • On the effect of cover tilt angle of the simple solar still on its productivity in different seasons and latitudes
    AJN Khalifa
    Energy conversion and management 52 (1), 431-436 , 2011
    2011
    Citations: 208
  • Testing of the performance of a fruit and vegetable solar drying system in Iraq
    KEJ Al-Juamily, AJN Khalifa, TA Yassen
    Desalination 209 (1-3), 163-170 , 2007
    2007
    Citations: 195
  • Effect of two-axis sun tracking on the performance of compound parabolic concentrators
    AJN Khalifa, SS Al-Mutawalli
    Energy conversion and management 39 (10), 1073-1079 , 1998
    1998
    Citations: 193
  • Natural convective heat transfer coefficient–a review: II. Surfaces in two-and three-dimensional enclosures
    AJN Khalifa
    Energy conversion and management 42 (4), 505-517 , 2001
    2001
    Citations: 192
  • On the verification of the effect of water depth on the performance of basin type solar stills
    AJN Khalifa, AM Hamood
    Solar Energy 83 (8), 1312-1321 , 2009
    2009
    Citations: 176
  • A storage domestic solar hot water system with a back layer of phase change material
    AJN Khalifa, KH Suffer, MS Mahmoud
    Experimental Thermal and Fluid Science 44, 174-181 , 2013
    2013
    Citations: 173
  • A comparative performance study of some thermal storage materials used for solar space heating
    AJN Khalifa, EF Abbas
    Energy and Buildings 41 (4), 407-415 , 2009
    2009
    Citations: 172
  • Effect of insulation thickness on the productivity of basin type solar stills: an experimental verification under local climate
    AJN Khalifa, AM Hamood
    Energy Conversion and Management 50 (9), 2457-2461 , 2009
    2009
    Citations: 146
  • An experimental study on modified simple solar stills
    AJN Khalifa, AS Al-Jubouri, MK Abed
    Energy conversion and management 40 (17), 1835-1847 , 1999
    1999
    Citations: 106
  • Performance correlations for basin type solar stills
    AJN Khalifa, AM Hamood
    Desalination 249 (1), 24-28 , 2009
    2009
    Citations: 77
  • Effect of inclination of the external reflector on the performance of a basin type solar still at various seasons
    AJN Khalifa, HA Ibrahim
    Energy for Sustainable Development 13 (4), 244-249 , 2009
    2009
    Citations: 69
  • Conventional versus storage domestic solar hot water systems: A comparative performance study
    AJN Khalifa, RAA Jabbar
    Energy Conversion and Management 51 (2), 265-270 , 2010
    2010
    Citations: 60
  • Experimental study of temperature stratification in a thermal storage tank in the static mode for different aspect ratios
    AJN Khalifa, AT Mustafa, FA Khammas
    ARPN Journal of Engineering and Applied Sciences 6 (2), 53-60 , 2011
    2011
    Citations: 59
  • Effect of inclination of the external reflector of simple solar still in winter: An experimental investigation for different cover angles
    AJN Khalifa, HA Ibrahim
    Desalination 264 (1-2), 129-133 , 2010
    2010
    Citations: 56
  • Evaluation of different hybrid power scenarios to Reverse Osmosis (RO) desalination units in isolated areas in Iraq
    AJN Khalifa
    Energy for Sustainable Development 15 (1), 49-54 , 2011
    2011
    Citations: 53
  • Forced versus natural circulation solar water heaters: A comparative performance study
    AJN Khalifa
    Renewable energy 14 (1-4), 77-82 , 1998
    1998
    Citations: 52
  • Effect of parabolic solar energy collectors for water distillation
    T Arunkumar, R Velraj, A Ahsan, AJN Khalifa, S Shams, D Denkenberger, ...
    Desalination and Water Treatment 57 (45), 21234-21242 , 2016
    2016
    Citations: 44
  • Thermal performance of locally made flat plate solar collectors used as part of a domestic hot water system
    AJN Khalifa
    Energy conversion and management 40 (17), 1825-1833 , 1999
    1999
    Citations: 43