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SAFFA RIFFAT

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SAFFA RIFFAT

Professor of Sustainable Energy Systems

Detection, location, and diagnosis of different faults in large solar PV system—a review (2023)
Journal Article
Venkatakrishnan, G. R., Rengaraj, R., Tamilselvi, S., Harshini, J., Sahoo, A., Saleel, C. A., …Riffat, S. (2023). Detection, location, and diagnosis of different faults in large solar PV system—a review. International Journal of Low-Carbon Technologies, 18, 659–674. https://doi.org/10.1093/ijlct/ctad018

Over the past decade, the significance of solar photovoltaic (PV) system has played a major role due to the rapid growth in the solar PV industry. Reliability, efficiency and safety of solar. PV system can be enhanced by continuous monitoring of the... Read More about Detection, location, and diagnosis of different faults in large solar PV system—a review.

Modelling analysis of a solar-driven thermochemical energy storage unit combined with heat recovery (2023)
Journal Article
Zhang, Y., Hu, M., Chen, Z., Su, Y., & Riffat, S. (2023). Modelling analysis of a solar-driven thermochemical energy storage unit combined with heat recovery. Renewable Energy, 206, 722-737. https://doi.org/10.1016/j.renene.2023.02.076

Solar-driven thermochemical energy storage (TCES) can address the mismatch between solar heat production and heating demand and contribute to decarbonisation in buildings. In many studies of typical salt hydrate TCES systems, massive heat carried by... Read More about Modelling analysis of a solar-driven thermochemical energy storage unit combined with heat recovery.

Thermal management of using crystallization-controllable supercooled PCM in space heating applications for different heating profiles in the UK (2023)
Journal Article
Kutlu, C., Su, Y., Lyu, Q., & Riffat, S. (2023). Thermal management of using crystallization-controllable supercooled PCM in space heating applications for different heating profiles in the UK. Renewable Energy, 206, 848-857. https://doi.org/10.1016/j.renene.2023.02.077

Supercooled sodium acetate trihydrate (SAT) allows the latent heat can be released when it is externally triggered regardless of the supercooling degree. Thus, the implementation of SAT into heating systems can eliminate the negative effects of weath... Read More about Thermal management of using crystallization-controllable supercooled PCM in space heating applications for different heating profiles in the UK.

Modelling and performance evaluation of a direct steam generation solar power system coupled with steam accumulator to meet electricity demands for a hospital under typical climate conditions in Libya (2023)
Journal Article
Ehtiwesh, A., Kutlu, C., Su, Y., & Riffat, S. (2023). Modelling and performance evaluation of a direct steam generation solar power system coupled with steam accumulator to meet electricity demands for a hospital under typical climate conditions in Libya. Renewable Energy, 206, 795-807. https://doi.org/10.1016/j.renene.2023.02.075

This study aims to build a dynamic model of a direct steam generation (DSG) solar power system coupled with a steam accumulator to meet electricity demands for a hospital under transient environmental conditions in Libya. The main components of the s... Read More about Modelling and performance evaluation of a direct steam generation solar power system coupled with steam accumulator to meet electricity demands for a hospital under typical climate conditions in Libya.

Effect of vacuum scheme on radiative sky cooling performance (2022)
Journal Article
Hu, M., Zhao, B., Suhendri, Cao, J., Wang, Q., Riffat, S., …Pei, G. (2023). Effect of vacuum scheme on radiative sky cooling performance. Applied Thermal Engineering, 219(Part C), Article 119657. https://doi.org/10.1016/j.applthermaleng.2022.119657

Relatively low cooling power density is one of the main barriers to wider promotion of radiative sky cooling (RSC) technology. Vacuum scheme has been proposed to minimize the non-radiative cooling loss and thus improve the cooling capacity. However,... Read More about Effect of vacuum scheme on radiative sky cooling performance.

Performance improvement potential of a PV/T integrated dual-source heat pump unit with a pressure booster ejector (2022)
Journal Article
Tahir Erdinc, M., Kutlu, C., Unal, S., Aydin, O., Su, Y., & Riffat, S. (2023). Performance improvement potential of a PV/T integrated dual-source heat pump unit with a pressure booster ejector. Thermal Science and Engineering Progress, 37, Article 101534. https://doi.org/10.1016/j.tsep.2022.101534

Dual-source heat pump unit can utilize the evaporation of the refrigerant at two different pressures. By adopting an ejector, high-pressure refrigerant stream can be used to lift compressor inlet pressure which results in a higher coefficient of perf... Read More about Performance improvement potential of a PV/T integrated dual-source heat pump unit with a pressure booster ejector.

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.

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