All Stories

  1. Modelling the coefficient of air source heat pump water heaters using multiple linear regression

    Article • Energy Efficiency, May 2019, Springer Science + Business Media

    Dr Stephen Loh Tangwe

  2. Quantification of the viability of residential air source heat pump water heaters as potential replacement for geysers in South Africa

    Article • Journal of Engineering Design and Technology, January 2019, Emerald

    Dr Stephen Loh Tangwe

  3. Comparison of the operation performance of split and integrated type air source heat pump water heater via modelling and simulation

    Article • Thermal Science and Engineering Progress, December 2018, Elsevier

    Dr Stephen Loh Tangwe

  4. Impact of standby losses and isotherm blanket contributions on the hot water cylinders of various heating technologies

    Article • Journal of Engineering Design and Technology, October 2018, Emerald

    Dr Stephen Loh Tangwe

  5. The performance of split and integrated types of air-source heat pump water heaters in South Africa

    Article • Journal of Energy in Southern Africa, June 2018, Academy of Science of South Africa

    Dr Stephen Loh Tangwe

  6. Comparison of different types air source heat pumps water heaters in South Africa

    Article • April 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Stephen Loh Tangwe

  7. Statistical analysis of split type air source heat pump water heaters

    Article • April 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Stephen Loh Tangwe

  8. An innovative benchmark testing to quantify saving by retrofitting geyser with hotspot device

    Article • April 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Stephen Loh Tangwe

  9. Evaluation of performance of air source heat pump water heaters using the surface fitting models: 3D mesh plots and 2D multi contour plots simulation

    Article • Thermal Science and Engineering Progress, March 2018, Elsevier

    Dr Stephen Loh Tangwe

  10. Modelling of an on-farm direct expansion bulk milk cooler to establish baseline energy consumption without milk pre-cooling: A case of Fort Hare Dairy Trust, South Africa

    Article • African Journal of Science Technology Innovation and Development, December 2017, Taylor & Francis

    Dr Stephen Loh Tangwe

  11. Comparative analysis of the coefficient of performance of an on-farm direct expansion bulk milk cooler

    Article • August 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Stephen Loh Tangwe

  12. Prediction of coefficient of performance and simulation design of an air-source heat pump water heater

    Article • Journal of Engineering Design and Technology, June 2017, Emerald

    Dr Stephen Loh Tangwe

  13. Performance monitoring and prediction of a domestic split-type air conditioner

    Article • April 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Stephen Loh Tangwe

  14. Impact of standby losses and potential reduction by installation of isotherm blanket on the hot water cylinders

    Article • April 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Stephen Loh Tangwe

  15. Computational design of an optimized control system for a split-type air source heat pump water heater

    Article • April 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Stephen Loh Tangwe

  16. Design of a heat pump water heater performance monitoring system

    Article • Journal of Engineering Design and Technology, October 2016, Emerald

    Dr Stephen Loh Tangwe

  17. An experimental study to determine the performance and potential saving of swimming pool air source heat pump water heater

    Article • March 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Stephen Loh Tangwe

  18. A review on the thermodynamic and electrical properties of South African acceptable refrigerants as R22 substitutes in domestic air conditioners in South Africa

    Article • March 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Stephen Loh Tangwe

  19. A review on the performance assessment and optimization techniques of air source heat pump water heaters used in South Africa

    Article • March 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Stephen Loh Tangwe

  20. An innovative optimization technique on performance efficiency verification in a coal thermal power plant unit

    Article • August 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Stephen Loh Tangwe

  21. Quantifying residential hot water production savings by retrofitting geysers with air source heat pumps

    Article • March 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Stephen Loh Tangwe

  22. Mathematical modeling and simulation application to visualize the performance of retrofit heat pump water heater under first hour heating rating

    Article • Renewable Energy, December 2014, Elsevier

    Dr Stephen Loh Tangwe

  23. Electrical performance evaluation of Johansson biomass gasifier system coupled to a 150 KVA generator

    Article • Renewable Energy, November 2014, Elsevier

    Dr Stephen Loh Tangwe

  24. A quantitative and qualitative methodology to evaluate performance improvement of a coal power plant in South Africa by the virtue of energy efficiency intervention

    Article • August 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Stephen Loh Tangwe

  25. Model base simulation application to compute achievable increment in a benson coal power plant owing to the implementation of energy efficiency activities

    Article • August 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Stephen Loh Tangwe

  26. Modeling the demand of a Calorifier to establish the baseline before retrofitting it with a commercial air source heat pump

    Article • August 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Stephen Loh Tangwe

  27. Empirical model to determine electricity demand reduction in the South Africa residential sector by retrofitting geysers with air source heat pump

    Article • April 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Stephen Loh Tangwe