Review of Daytime Radiative Cooling Technologies and Control Methods (2023)
Journal Article
Su, W., Cai, P., Darkwa, J., Hu, M., Kokogiannakis, G., Xu, C., & Wang, L. (in press). Review of Daytime Radiative Cooling Technologies and Control Methods. Applied Thermal Engineering,

Development of Composite Microencapsulated Phase Change Materials for Multi-Temperature Thermal Energy Storage (2023)
Journal Article
Su, W., Darkwa, J., Zhou, T., Du, D., Kokogiannakis, G., Li, Y., …Gao, L. (2023). Development of Composite Microencapsulated Phase Change Materials for Multi-Temperature Thermal Energy Storage. Crystals, 13(8), Article 1167. https://doi.org/10.3390/cryst13081167

Phase change energy storage materials have been recognized as potential energy-saving materials for balancing cooling and heating demands in buildings. However, individual phase change materials (PCM) with single phase change temperature cannot be ad... Read More about Development of Composite Microencapsulated Phase Change Materials for Multi-Temperature Thermal Energy Storage.

Experimental investigations into thermal performance of phase change emulsion in a fin-and-tube heat exchanger (2023)
Journal Article
Wei, C., Shao, J., & Darkwa, J. (2023). Experimental investigations into thermal performance of phase change emulsion in a fin-and-tube heat exchanger. International Journal of Low-Carbon Technologies, 18, 175–183. https://doi.org/10.1093/ijlct/ctad001

Phase change emulsions (PCMEs) are always identified as potential working fluids that could be used to reduce circulating pump energy consumption in chill water air conditioning systems. But how PCME behaves in a fin-and-tube heat exchanger is still... Read More about Experimental investigations into thermal performance of phase change emulsion in a fin-and-tube heat exchanger.

Solid–Gas Thermochemical Energy Storage Materials and Reactors for Low to High-Temperature Applications: A Concise Review (2023)
Journal Article
Kur, A., Darkwa, J., Calautit, J., Boukhanouf, R., & Worall, M. (2023). Solid–Gas Thermochemical Energy Storage Materials and Reactors for Low to High-Temperature Applications: A Concise Review. Energies, 16(2), Article 756. https://doi.org/10.3390/en16020756

Thermochemical energy storage materials and reactors have been reviewed for a range of temperature applications. For low-temperature applications, magnesium chloride is found to be a suitable candidate at temperatures up to 100 °C, whereas calcium hy... Read More about Solid–Gas Thermochemical Energy Storage Materials and Reactors for Low to High-Temperature Applications: A Concise Review.

Development of spectrally self-switchable cover with phase change material for dynamic radiative cooling (2022)
Journal Article
Su, W., Kang, R., Cai, P., Hu, M., Kokogiannakis, G., Darkwa, J., …Wang, L. (2023). Development of spectrally self-switchable cover with phase change material for dynamic radiative cooling. Solar Energy Materials and Solar Cells, 251, Article 112125. https://doi.org/10.1016/j.solmat.2022.112125

Radiative cooling promises an effective strategy against global warming by sending waste heat to the deep universe in a passive manner. However, the mismatch between cooling supply and demand can significantly compromise the efficacy of spectrally-st... Read More about Development of spectrally self-switchable cover with phase change material for dynamic radiative cooling.

Enhancing the detection performance of a vision-based window opening detector (2022)
Journal Article
Tien, P. W., Wei, S., Calautit, J., Darkwa, J., & Wood, C. (2022). Enhancing the detection performance of a vision-based window opening detector. Cleaner Energy Systems, 3, Article 100038. https://doi.org/10.1016/j.cles.2022.100038

In favourable climates and building types, employing natural ventilation can lead to significant energy savings and health benefits. However, in cold climates or conditions, the use of natural ventilation could result in significant heat loss and, co... Read More about Enhancing the detection performance of a vision-based window opening detector.

Parametric study of a novel combination of solar chimney and radiative cooling cavity for natural ventilation enhancement in residential buildings (2022)
Journal Article
Suhendri, S., Hu, M., Su, Y., Darkwa, J., & Riffat, S. (2022). Parametric study of a novel combination of solar chimney and radiative cooling cavity for natural ventilation enhancement in residential buildings. Building and Environment, 225, Article 109648. https://doi.org/10.1016/j.buildenv.2022.109648

The application of radiative cooling (RC) is expanding to a diverse research field, with some current studies trying to apply RC for natural ventilation. One proposed strategy is to use RC for the enhancement of solar chimney (SC) ventilation, and th... Read More about Parametric study of a novel combination of solar chimney and radiative cooling cavity for natural ventilation enhancement in residential buildings.

Experimental Investigation on Compressive Strength, Ultrasonic Characteristic and Cracks Distribution of Granite Rock Irradiated by a Moving Laser Beam (2022)
Journal Article
Kuang, L., Sun, L., Yu, D., Wang, Y., Chu, Z., & Darkwa, J. (2022). Experimental Investigation on Compressive Strength, Ultrasonic Characteristic and Cracks Distribution of Granite Rock Irradiated by a Moving Laser Beam. Applied Sciences, 12(20), Article 10681. https://doi.org/10.3390/app122010681

Efficient fracturing is the key issue for the exploitation of geothermal energy in a Hot Dry Rock reservoir. By using the laser irradiation cracking method, this study investigates the changes in uniaxial compressive strength, ultrasonic characterist... Read More about Experimental Investigation on Compressive Strength, Ultrasonic Characteristic and Cracks Distribution of Granite Rock Irradiated by a Moving Laser Beam.

Machine Learning and Deep Learning Methods for Enhancing Building Energy Efficiency and Indoor Environmental Quality – A Review (2022)
Journal Article
Tien, P. W., Wei, S., Darkwa, J., Wood, C., & Calautit, J. K. (2022). Machine Learning and Deep Learning Methods for Enhancing Building Energy Efficiency and Indoor Environmental Quality – A Review. Energy and AI, 10, Article 100198. https://doi.org/10.1016/j.egyai.2022.100198

The built environment sector is responsible for almost one-third of the world's final energy consumption. Hence, seeking plausible solutions to minimise building energy demands and mitigate adverse environmental impacts is necessary. Artificial intel... Read More about Machine Learning and Deep Learning Methods for Enhancing Building Energy Efficiency and Indoor Environmental Quality – A Review.

Enhancement of Syngas Production in Co-Pyro-Gasification of Biomass and Plastic Waste Materials: Computational Study (2022)
Working Paper
Darkwa, J., Kwawu, C., Corner, J., Kemausuor, F., Adei, E., Agyekum, K., & Boateng, I. D. Enhancement of Syngas Production in Co-Pyro-Gasification of Biomass and Plastic Waste Materials: Computational Study

The process of co-pyro-gasification of biomass and plastics appears to have the potential for increasing syngas production for power generation and thus minimizing the impact of plastic waste on the environment. This study was based on co-pyro-gasifi... Read More about Enhancement of Syngas Production in Co-Pyro-Gasification of Biomass and Plastic Waste Materials: Computational Study.