Professor JO DARKWA's Outputs (72)

Solar photovoltaic cooling and power enhancement systems: A review (2025)
Journal Article
Utomo, B., Darkwa, J., Du, D., & Worall, M. (in press). Solar photovoltaic cooling and power enhancement systems: A review. Renewable and Sustainable Energy Reviews,

The development of an efficient photovoltaic system could play a vital role in achieving Sustainable Development Goals and the global Net Zero emission target. However, the operation of photovoltaic is reliant on its operating temperatures, causing a... Read More about Solar photovoltaic cooling and power enhancement systems: A review.

Integrated Phase-Change Materials in a Hybrid Windcatcher Ventilation System (2025)
Journal Article
Eso, O., Darkwa, J., & Calautit, J. (2025). Integrated Phase-Change Materials in a Hybrid Windcatcher Ventilation System. Energies, 18(4), Article 848. https://doi.org/10.3390/en18040848

Windcatchers are effective passive ventilation systems, but their inability to actively reduce and stabilize supply air temperatures reduces indoor cooling performance. This study addresses this limitation by integrating encapsulated phase-change mat... Read More about Integrated Phase-Change Materials in a Hybrid Windcatcher Ventilation System.

A novel CALA-STL algorithm for optimizing prediction of building energy heat load (2024)
Journal Article
Guo, Y., Jia, M., Su, C., Darkwa, J., Hou, S., pan, F., Wang, H., & Liu, P. (2025). A novel CALA-STL algorithm for optimizing prediction of building energy heat load. Energy and Buildings, 328, Article 115207. https://doi.org/10.1016/j.enbuild.2024.115207

Energy heat load forecasting plays a crucial role in the low-energy management of buildings. With the growing demand for energy and increasing environmental pressures, accurately predicting building heat loads can provide reliable data support for en... Read More about A novel CALA-STL algorithm for optimizing prediction of building energy heat load.

Theoretical investigation of an enhanced multiphase change energy storage material for buildings (2024)
Journal Article
Sinaga, R., Darkwa, J., Omer, S., & Worall, M. (2025). Theoretical investigation of an enhanced multiphase change energy storage material for buildings. Journal of Energy Storage, 106, Article 114834. https://doi.org/10.1016/j.est.2024.114834

Recent developments have highlighted the potential of multiphase change materials (MCM) as flexible energy storage materials for application in buildings. The MCM was obtained by combining the microencapsulated heptadecane (MEHept) and microencapsula... Read More about Theoretical investigation of an enhanced multiphase change energy storage material for buildings.

Thermal Conductivity Enhancement of Doped Magnesium Hydroxide for Medium-Temperature Heat Storage: A Molecular Dynamics Approach and Experimental Validation (2024)
Journal Article
Kur, A., Darkwa, J., Worall, M., Calautit, J., & Boukhanouf, R. (2024). Thermal Conductivity Enhancement of Doped Magnesium Hydroxide for Medium-Temperature Heat Storage: A Molecular Dynamics Approach and Experimental Validation. International Journal of Molecular Sciences, 25(20), Article 11139. https://doi.org/10.3390/ijms252011139

Magnesium hydroxide, Mg(OH)2, is recognized as a promising material for medium-temperature heat storage, but its low thermal conductivity limits its full potential application. In this study, thermal enhancement of a developed magnesium hydroxide-pot... Read More about Thermal Conductivity Enhancement of Doped Magnesium Hydroxide for Medium-Temperature Heat Storage: A Molecular Dynamics Approach and Experimental Validation.

Potential use of district heating networks and the prospects for the advancements within urban areas of Nottingham as a case study (2024)
Journal Article
Tien, P. W., Feng, Y., Worall, M., Tokbolat, S., Boukhanouf, R., Calautit, J., & Darkwa, J. (2024). Potential use of district heating networks and the prospects for the advancements within urban areas of Nottingham as a case study. Energy Reports, 12, 3904-3929. https://doi.org/10.1016/j.egyr.2024.09.050

Buildings in urban areas significantly contribute to global energy consumption, necessitating solutions to reduce energy demands and mitigate environmental impacts. This study investigates district heating networks in urban areas, using Nottingham as... Read More about Potential use of district heating networks and the prospects for the advancements within urban areas of Nottingham as a case study.

Investigation of a model predictive control (MPC) strategy for seasonal thermochemical energy storage systems in district heating networks (2024)
Journal Article
Wei, Z., Tien, P. W., Calautit, J., Darkwa, J., Worall, M., & Boukhanouf, R. (2024). Investigation of a model predictive control (MPC) strategy for seasonal thermochemical energy storage systems in district heating networks. Applied Energy, 376(Part A), Article 124164. https://doi.org/10.1016/j.apenergy.2024.124164

This research investigates the integration of model predictive control (MPC) with seasonal thermochemical energy storage systems (STES) within district heating networks, focusing on the Nottingham district heating as a case study. The primary aim is... Read More about Investigation of a model predictive control (MPC) strategy for seasonal thermochemical energy storage systems in district heating networks.

Investigation of model predictive control (MPC) strategy for seasonal thermochemical energy storage system in a district heating network (2024)
Journal Article
Wei, Z., Tien, P. W., Calautit, J., Darkwa, J., Worall, M., & Boukhanouf, R. (2024). Investigation of model predictive control (MPC) strategy for seasonal thermochemical energy storage system in a district heating network. Applied Energy, 376(Part A), Article 124164

This research investigates the integration of model predictive control (MPC) with seasonal thermochemical energy storage systems (STES) within district heating networks, focusing on the Nottingham district heating network as a case study. The primary... Read More about Investigation of model predictive control (MPC) strategy for seasonal thermochemical energy storage system in a district heating network.

A Review of Thermochemical Energy Storage Systems for District Heating in the UK (2024)
Journal Article
Roger-Lund, S., Darkwa, J., Worall, M., Calautit, J., & Boukhanouf, R. (2024). A Review of Thermochemical Energy Storage Systems for District Heating in the UK. Energies, 17(14), Article 3389. https://doi.org/10.3390/en17143389

Thermochemical energy storage (TCES) presents a promising method for energy storage due to its high storage density and capacity for long-term storage. A combination of TCES and district heating networks exhibits an appealing alternative to natural g... Read More about A Review of Thermochemical Energy Storage Systems for District Heating in the UK.

Multi-objective integrated optimization of geothermal heating system with energy storage using digital twin technology (2024)
Journal Article
Guo, Y., Tang, Q., Darkwa, J., Wang, H., Su, W., Tang, D., & Mu, J. (2024). Multi-objective integrated optimization of geothermal heating system with energy storage using digital twin technology. Applied Thermal Engineering, 252, Article 123685. https://doi.org/10.1016/j.applthermaleng.2024.123685

Heat energy storage technology plays a significant role in energy systems, and the various technological solutions brought about by digitalization are especially valuable in the field of energy storage. This article proposes an innovative model based... Read More about Multi-objective integrated optimization of geothermal heating system with energy storage using digital twin technology.

A novel prediction model for integrated district energy system based on secondary decomposition and artificial rabbits optimization (2024)
Journal Article
Guo, Y., Tang, Q., Darkwa, J., Duan, X., Su, W., Jia, M., & Mu, J. (2024). A novel prediction model for integrated district energy system based on secondary decomposition and artificial rabbits optimization. Energy and Buildings, 310, Article 114106. https://doi.org/10.1016/j.enbuild.2024.114106

Energy predictions for buildings are the basis for energy efficiency and the implementation of smart technologies to cope with operational and energy planning issues in buildings, playing a crucial role in the implementation of environmental protecti... Read More about A novel prediction model for integrated district energy system based on secondary decomposition and artificial rabbits optimization.

Introducing a novel method for simulating stochastic movement and occupancy in residential spaces using time-use survey data (2023)
Journal Article
Zhang, R., Zhou, T., Ye, H., & Darkwa, J. (2024). Introducing a novel method for simulating stochastic movement and occupancy in residential spaces using time-use survey data. Energy and Buildings, 304, Article 113854. https://doi.org/10.1016/j.enbuild.2023.113854

In the context of growing concerns over energy consumption and sustainability, accurate modelling of occupancy patterns within residential buildings is critical. In this study, a novel stochastic occupancy model is introduced for simulating human beh... Read More about Introducing a novel method for simulating stochastic movement and occupancy in residential spaces using time-use survey data.

Enhancement of thermal and mechanical properties of microencapsulated phase change materials with graphene oxide (2023)
Journal Article
Hu, M., Wang, D., Kokogiannakis, G., Darkwa, J., Li, Y., Wang, L., Xu, Q., & Su, W. (2024). Enhancement of thermal and mechanical properties of microencapsulated phase change materials with graphene oxide. Chemical Engineering Journal, 479, Article 147855. https://doi.org/10.1016/j.cej.2023.147855

The low thermal conductivity of microencapsulated phase change materials (MEPCMs) limits the latent heat charging and discharging rates for various applications. To overcome this limitation, we prepared MEPCM by co-surfactants of polyvinyl alcohol an... Read More about Enhancement of thermal and mechanical properties of microencapsulated phase change materials with graphene oxide.

The effect of nucleating agent on the multiphase change materials for energy storage in buildings (2023)
Journal Article
Sinaga, R., Darkwa, J., Worall, M., & Su, W. (2024). The effect of nucleating agent on the multiphase change materials for energy storage in buildings. Applied Thermal Engineering, 239, Article 122153. https://doi.org/10.1016/j.applthermaleng.2023.122153

Phase change materials (PCMs) have the potential to be used for widespread energy storage applications in buildings. However, available PCMs can only function at fixed phase transitional temperatures, restricting their seasonal applicability. To this... Read More about The effect of nucleating agent on the multiphase change materials for energy storage in buildings.

Synthesis and Characterization of Doped Magnesium Hydroxide for Medium Heat Storage Application (2023)
Journal Article
Albeladi, N., Kur, A., Mokaya, R., Darkwa, J., Roger-Lund, S., Worall, M., Calautit, J., & Boukhanouf, R. (2023). Synthesis and Characterization of Doped Magnesium Hydroxide for Medium Heat Storage Application. Materials, 16(18), Article 6296. https://doi.org/10.3390/ma16186296

The amount of waste heat generated annually in the UK exceeds the total annual electricity demand. Hence, it is crucial to effectively harness all available sources of waste heat based on their varying temperatures. Through suitable technologies, a s... Read More about Synthesis and Characterization of Doped Magnesium Hydroxide for Medium Heat Storage Application.

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., Wang, L., & 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., Chen, J., Xu, S., & 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.