All Outputs (8)

Development of TiO2/RT–35HC based nanocomposite phase change materials (NCPCMs) for thermal management applications (2020)
Journal Article
Arshad, A., Jabbal, M., Shi, L., Darkwa, J., Weston, N. J., & Yan, Y. (2021). Development of TiO2/RT–35HC based nanocomposite phase change materials (NCPCMs) for thermal management applications. Sustainable Energy Technologies and Assessments, 43, Article 100865. https://doi.org/10.1016/j.seta.2020.100865

This experimental study covers the development of novel nanocomposite phase change materials (NCPCMs) based on RT–35HC as a phase change material (PCM) and titanium oxide (TiO2) as thermal conductivity enhancement material, for thermal management app... Read More about Development of TiO2/RT–35HC based nanocomposite phase change materials (NCPCMs) for thermal management applications.

Experimental investigations into the adsorption enhancement in packed beds using Z-Annular flow configuration (2018)
Journal Article
Yeboah, S., & Darkwa, J. (2019). Experimental investigations into the adsorption enhancement in packed beds using Z-Annular flow configuration. International Journal of Thermal Sciences, 136, 121-134. https://doi.org/10.1016/j.ijthermalsci.2018.10.027

Annular packed bed structures have the potential to overcome limitations of conventional fully packed bed types by offering radial distribution of airflow within them to enhance fluid-solid contact during adsorption and also to minimize pressure drop... Read More about Experimental investigations into the adsorption enhancement in packed beds using Z-Annular flow configuration.

Thermal performance of a novel helically coiled oscillating heat pipe (HCOHP) for isothermal adsorption: an experimental study (2018)
Journal Article
Yeboah, S., & Darkwa, J. (2018). Thermal performance of a novel helically coiled oscillating heat pipe (HCOHP) for isothermal adsorption: an experimental study. International Journal of Thermal Sciences, 128, https://doi.org/10.1016/j.ijthermalsci.2018.02.014

Helically Coiled Oscillating Heat Pipes (HCOHPs) have been designed and tested under laboratory conditions to investigate their potential to achieve isothermal adsorption when integrated with a cylindrical solid desiccant packed bed system. The HCOHP... Read More about Thermal performance of a novel helically coiled oscillating heat pipe (HCOHP) for isothermal adsorption: an experimental study.

Multiphase change materials for energy storage application in buildings (2017)
Journal Article
Darkwa, J., & Su, W. (2017). Multiphase change materials for energy storage application in buildings. Journal of Thermophysics and Heat Transfer, 31(4), 791-795. https://doi.org/10.2514/1.T5101

Experimental study has been carried out towards the development of a multiphase change material (MCM) by combining two fabricated microencapsulated phase change materials (MEPCM-oct and MEPCM-eic) samples. The study also covered the characterization... Read More about Multiphase change materials for energy storage application in buildings.

Development of a novel phase change material emulsion for cooling systems (2015)
Journal Article
Shao, J., Darkwa, J., & Kokogiannakis, G. (2016). Development of a novel phase change material emulsion for cooling systems. Renewable Energy, 87, https://doi.org/10.1016/j.renene.2015.10.050

In this paper, a novel phase change material emulsion (PCE-10) consisting of an organic PCM (RT10) and water has been developed. Its thermophysical properties such as heat of fusion, viscosity and sub-cooling temperature have been established. The ch... Read More about Development of a novel phase change material emulsion for cooling systems.

Review of phase change emulsions (PCMEs) and their applications in HVAC systems (2015)
Journal Article
Shao, J., Darkwa, J., & Kokogiannakis, G. (2015). Review of phase change emulsions (PCMEs) and their applications in HVAC systems. Energy and Buildings, 94, https://doi.org/10.1016/j.enbuild.2015.03.003

Phase change material emulsions (PCMEs) are multifunctional fluids consisting of phase change materials (PCMs) and carrier fluids. PCMEs could be potential candidates as heat transfer media in heating, ventilation and air conditioning (HVAC) systems.... Read More about Review of phase change emulsions (PCMEs) and their applications in HVAC systems.

Evaluation of thermal energy dynamics in a compacted high-conductivity phase-change material (2015)
Journal Article
Darkwa, J., Su, O., & Zhou, T. (2015). Evaluation of thermal energy dynamics in a compacted high-conductivity phase-change material. Journal of Thermophysics and Heat Transfer, 29(2), https://doi.org/10.2514/1.T3911

This study evaluates the concept of developing a nondeform phase-change energy storage material possessing higher thermal conductivity and energy storage density through a pressure compaction process. The theoretical and experimental investigations h... Read More about Evaluation of thermal energy dynamics in a compacted high-conductivity phase-change material.

A simulation-based framework for a mapping tool that assesses the energy performance of green roofs
Presentation / Conference Contribution
Kokogiannakis, G., & Darkwa, J. A simulation-based framework for a mapping tool that assesses the energy performance of green roofs.

This paper presents a framework for the development of a GIS open source mapping tool that aims to disseminate a database with results of detailed simulations in order to assess in a quick and easy way the energy performance of green roof designs acr... Read More about A simulation-based framework for a mapping tool that assesses the energy performance of green roofs.