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Techno-economic assessment of a fuel flexible free piston engine generator based energy system for cold ironing application (2025)
Journal Article
Roy, D., Ngwaka, U., Shivaprasad, K. V., Zhu, S., Taghavifar, H., Williams, R., Smallbone, A., & Roskilly, A. P. (2025). Techno-economic assessment of a fuel flexible free piston engine generator based energy system for cold ironing application. Energy, 332, Article 136954. https://doi.org/10.1016/j.energy.2025.136954

This study assesses the techno-economic viability of a fuel-flexible free piston engine generator (FPEG) for providing shore power to maritime vessels (cold ironing) within ports. In cold ironing applications a localised power generation is required... Read More about Techno-economic assessment of a fuel flexible free piston engine generator based energy system for cold ironing application.

Techno-economic feasibility of pipeline and mobile thermal energy storage for liquid desiccant transport (2025)
Journal Article
Giampieri, A., Ittner, T., Ling-Chin, J., & Roskilly, A. P. (2025). Techno-economic feasibility of pipeline and mobile thermal energy storage for liquid desiccant transport. Applied Energy, 392, 125975. https://doi.org/10.1016/j.apenergy.2025.125975

The use of desiccant solutions for heat recovery, transport and use offers an alternative to conventional district heating and cooling networks, providing heating, cooling, moisture control and drying in one multi-service system. Desiccant solutions... Read More about Techno-economic feasibility of pipeline and mobile thermal energy storage for liquid desiccant transport.

Decarbonisation pathways for industrial clusters through multi-energy systems (2025)
Journal Article
Ngwaka, U., Khalid, Y., Ling-Chin, J., Counsell, J., Pinedo-Cuenca, R., Dawood, H., Smallbone, A. J., Dawood, N., & Roskilly, A. P. (2025). Decarbonisation pathways for industrial clusters through multi-energy systems. Sustainable Futures, 9, Article 100656. https://doi.org/10.1016/j.sftr.2025.100656

Decarbonising industrial clusters will lay the foundation for decarbonisation in non-cluster-based industries whilst aligning with carbon-neutral targets. Nonetheless, the technical and economic viability appraisal for appropriate decarbonisation tec... Read More about Decarbonisation pathways for industrial clusters through multi-energy systems.

Kinetic of desorption in chemisorption heat pump technology for solar thermal energy storage (2025)
Journal Article
Najjaran, A., Ma, Z., Bao, H., & Roskilly, T. (2025). Kinetic of desorption in chemisorption heat pump technology for solar thermal energy storage. Energy, 326, Article 136197. https://doi.org/10.1016/j.energy.2025.136197

In this research, the kinetics of the desorption process within chemisorption heat pump systems are studied, particularly for storing thermal energy. Chemisorption heat pumps, recognised for their heating and cooling capabilities, have recently been... Read More about Kinetic of desorption in chemisorption heat pump technology for solar thermal energy storage.

Experimental and numerical investigation to optimise liquid desiccant system for advanced air conditioning (2025)
Journal Article
Shivaprasad, K. V., Roy, S., Giampieri, A., Smallbone, A., & Roskilly, A. P. (2025). Experimental and numerical investigation to optimise liquid desiccant system for advanced air conditioning. Scientific Reports, 15, Article 7151. https://doi.org/10.1038/s41598-025-88738-2

This study aims to experimentally demonstrate a liquid desiccant systems effectiveness by using thermo-chemical fluid, such as aqueous solution of calcium chloride. This study evaluated the effect of operating temperatures on air properties (temperat... Read More about Experimental and numerical investigation to optimise liquid desiccant system for advanced air conditioning.

Investigation of the operating characteristics of a free-piston closed-cycle Joule engine generator with helium as working fluid (2025)
Journal Article
Wang, B., Zhu, S., Ngwaka, U., Jia, B., Vijayalakshmi Shivaprasad, K., Wang, Y., Smallbone, A., Paul Roskilly, A., & Luo, E. (2025). Investigation of the operating characteristics of a free-piston closed-cycle Joule engine generator with helium as working fluid. Energy Conversion and Management: X, 26, Article 100909. https://doi.org/10.1016/j.ecmx.2025.100909

As an emerging micro- or small-scale energy conversion technology, linear Joule engine generators (LJEGs) combine the advantages of external combustion engines and linear generators, feature the advantages of high thermal-to-electrical efficiency, mu... Read More about Investigation of the operating characteristics of a free-piston closed-cycle Joule engine generator with helium as working fluid.

Comparison of game theory and genetic algorithm optimisation schedulers for diesel-hydrogen powered system reconfiguration (2025)
Journal Article
Taghavifar, H., Roy, S., & Roskilly, A. P. (2025). Comparison of game theory and genetic algorithm optimisation schedulers for diesel-hydrogen powered system reconfiguration. International Journal of Hydrogen Energy, 105, 1435-1450. https://doi.org/10.1016/j.ijhydene.2025.01.238

The turbocharged dual-fuel engine is modeled and connected online to optimiser platform for transient input variation of input parameters decided by designed algorithms. This task is undertaken to enable intelligent control of the propulsion system i... Read More about Comparison of game theory and genetic algorithm optimisation schedulers for diesel-hydrogen powered system reconfiguration.

A preliminary experimental study on a free-piston engine generator prototype (2025)
Presentation / Conference Contribution
Zhu, S., Vijayalakshmi, S., Ngwaka, U., Roy, S., Williams, R., Smallbone, A., & Roskilly, A. P. (2024, September). A preliminary experimental study on a free-piston engine generator prototype. Presented at Energy Proceedings, Niigata, Japan

As an emerging micro- or small-scale energy conversion technology, free-piston engine generator (FPEG) features the advantages of high efficiency, high volumetric power density, and multi-fuel adaptability potential. To solve the issues that the prev... Read More about A preliminary experimental study on a free-piston engine generator prototype.

Towards an eco-social circular economy: exploring the feasibility study of pyrolysis on agricultural feedstocks (2024)
Journal Article
Allison, T., Shivaprasad, K. V., Malik, A., Rafiq, R., Wang, Y., & Roskilly, A. P. (online). Towards an eco-social circular economy: exploring the feasibility study of pyrolysis on agricultural feedstocks. Biomass Conversion and Biorefinery, https://doi.org/10.1007/s13399-024-06361-z

The agricultural sector is challenging to decarbonise due to its reliance on heavy machinery and fossil fuels, which face issues when decarbonising via methods such as electrification. However, agriculture provides opportunities to generate renewable... Read More about Towards an eco-social circular economy: exploring the feasibility study of pyrolysis on agricultural feedstocks.

Feasibility of a heat pump-assisted liquid desiccant system for continuous dehumidification and regeneration in temperate oceanic climatic greenhouses (2024)
Journal Article
Bhowmik, M., Giampieri, A., Bean, J., Paul Roskilly, A., & Ma, Z. (2025). Feasibility of a heat pump-assisted liquid desiccant system for continuous dehumidification and regeneration in temperate oceanic climatic greenhouses. Energy Conversion and Management, 323(A), Article 119256. https://doi.org/10.1016/j.enconman.2024.119256

Effective thermo-hygrometric control is essential for buildings and greenhouses, particularly in green and low-carbon production. There is growing interest in integrating heat pumps with liquid desiccant systems to enhance energy efficiency and reduc... Read More about Feasibility of a heat pump-assisted liquid desiccant system for continuous dehumidification and regeneration in temperate oceanic climatic greenhouses.