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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.

Incorporation of controllable supercooled phase change material heat storage with a solar assisted heat pump: Testing of crystallization triggering and heating demand-based modelling study (2022)
Journal Article
Kutlu, C., Tapia-Brito, E., Agbonaye, O., Su, Y., Smith, S., Hughes, B., & Riffat, S. (2022). Incorporation of controllable supercooled phase change material heat storage with a solar assisted heat pump: Testing of crystallization triggering and heating demand-based modelling study. Journal of Energy Storage, 55(Part D), Article 105744. https://doi.org/10.1016/j.est.2022.105744

In short to long-term heat storage, the heat loss of common phase change material (PCM) systems is a big problem where heat is lost continuously to the ambient environment and is thus wasted, even when the system is not in use. Controllable supercool... Read More about Incorporation of controllable supercooled phase change material heat storage with a solar assisted heat pump: Testing of crystallization triggering and heating demand-based modelling study.

Sound absorption, structure and mechanical behavior of konjac glucomannan-based aerogels with addition of gelatin and wheat straw (2022)
Journal Article
Wang, Y., Zhu, H., Tu, W., Su, Y., Jiang, F., & Riffat, S. (2022). Sound absorption, structure and mechanical behavior of konjac glucomannan-based aerogels with addition of gelatin and wheat straw. Construction and Building Materials, 352, Article 129052. https://doi.org/10.1016/j.conbuildmat.2022.129052

Environment-friendly konjac glucomannan (KGM)-based aerogels with addition of gelatin and wheat straw are produced by freeze-drying method to have promising sound absorption performance, thermal stability and mechanical property. Results show that ge... Read More about Sound absorption, structure and mechanical behavior of konjac glucomannan-based aerogels with addition of gelatin and wheat straw.

A Review of Housing in Indonesia: A Case for the Integration of Sustainable Design Strategies in Low-cost Apartments (2022)
Conference Proceeding
Lubis, I., Kiamba, L., & Rodrigues, L. (2022). A Review of Housing in Indonesia: A Case for the Integration of Sustainable Design Strategies in Low-cost Apartments. In S. Riffat (Ed.), Sustainable Energy Technologies: Proceedings of the 19th International Conference on Sustainable Energy Technologies – SET 2022 16th – 18th August 2022, Turkey (85-95)

Quantitative characterization of the effect of inclination angle on flat-plate radiative cooling performance in buildings (2022)
Journal Article
Hu, M., Zhao, B., Suhendri, Cao, J., Wang, Q., Riffat, S., …Pei, G. (2022). Quantitative characterization of the effect of inclination angle on flat-plate radiative cooling performance in buildings. Journal of Building Engineering, 59, Article 105124. https://doi.org/10.1016/j.jobe.2022.105124

The environment-friendly and energy-free nature of radiative sky cooling fosters its application in buildings where a radiative cooler is usually positioned at a tilted angle. However, though the cooling capacity of various radiative cooling material... Read More about Quantitative characterization of the effect of inclination angle on flat-plate radiative cooling performance in buildings.

Investigation on a Vermiculite-Based Solar Thermochemical Heat Storage System for Building Applications (2022)
Journal Article
Zhang, Y., Chen, Z., Kutlu, C., Su, Y., & Riffat, S. (2022). Investigation on a Vermiculite-Based Solar Thermochemical Heat Storage System for Building Applications. Future Cities and Environment, 8(1), 1-14. https://doi.org/10.5334/fce.153

Industrial processes and the building sector (e.g., for space and water heating) are responsible for the majority of the total energy consumed for heat. Although fossil fuels remain to dominate the heating sector, renewable heating technologies have... Read More about Investigation on a Vermiculite-Based Solar Thermochemical Heat Storage System for Building Applications.

Experimental Investigation of a MopFan-Based Photocatalytic Air Purification Device (2022)
Journal Article
Tapia-Brito, E., Riffat, J., Wang, Y., Ghaemmaghami, A. M., Coleman, C. M., & Riffat, S. (2022). Experimental Investigation of a MopFan-Based Photocatalytic Air Purification Device. Future Cities and Environment, 8(1), https://doi.org/10.5334/fce.149

Photocatalytic oxidation (PCO) is a potential approach for air cleaning, especially when utilising titanium dioxide (TiO2). A MopFan is similar to a roller brush but is made of flexible fibres coated with TiO2. Unlike conventional filter/mesh UV syst... Read More about Experimental Investigation of a MopFan-Based Photocatalytic Air Purification Device.

Extending the operation of a solar air collector to night-time by integrating radiative sky cooling: A comparative experimental study (2022)
Journal Article
Hu, M., Zhao, B., Suhendri, Cao, J., Wang, Q., Riffat, S., …Pei, G. (2022). Extending the operation of a solar air collector to night-time by integrating radiative sky cooling: A comparative experimental study. Energy, 251, Article 123986. https://doi.org/10.1016/j.energy.2022.123986

Solar thermal collectors are generally unproductivity at night without sunlight. Radiative cooling, on the other hand, is another renewable technology harvesting coldness from extraterrestrial space and can effectively work nocturnally. Therefore, th... Read More about Extending the operation of a solar air collector to night-time by integrating radiative sky cooling: A comparative experimental study.

An innovative window heat recovery (WHR) system with heat pipe technology: Analytical, CFD, experimental analysis and building retrofit performance (2022)
Journal Article
Barreto, G., Qu, K., Wang, Y., Iten, M., & Riffat, S. (2022). An innovative window heat recovery (WHR) system with heat pipe technology: Analytical, CFD, experimental analysis and building retrofit performance. Energy Reports, 8, 3289-3305. https://doi.org/10.1016/j.egyr.2022.02.126

This paper addresses the numerical and experimental performance analysis of a windows heat recovery system made of heat pipes. For modelling, the heat pipe is considered as a pseudo solid material with high value of effective thermal conductivity. An... Read More about An innovative window heat recovery (WHR) system with heat pipe technology: Analytical, CFD, experimental analysis and building retrofit performance.

A preliminary experimental study of a novel incorporation of chilled ceiling with phase change materials and transparent membrane cover (2022)
Journal Article
Riffat, J., Kutlu, C., Tapia-Brito, E., Su, Y., & Riffat, S. (2022). A preliminary experimental study of a novel incorporation of chilled ceiling with phase change materials and transparent membrane cover. International Journal of Low-Carbon Technologies, 17, 258-265. https://doi.org/10.1093/ijlct/ctab104

This study presents an experimental investigation into a novel incorporation of chilled ceiling with transparent membrane cover and phase-change material (PCM) to form a new type of PCM chilled ceiling panel. The membrane cover is infrared transparen... Read More about A preliminary experimental study of a novel incorporation of chilled ceiling with phase change materials and transparent membrane cover.

Applications of radiative sky cooling in solar energy systems: Progress, challenges, and prospects (2022)
Journal Article
Hu, M., Zhao, B., Suhendri, Ao, X., Cao, J., Wang, Q., …Pei, G. (2022). Applications of radiative sky cooling in solar energy systems: Progress, challenges, and prospects. Renewable and Sustainable Energy Reviews, 160, Article 112304. https://doi.org/10.1016/j.rser.2022.112304

The dynamic energy balance on the earth is jointly governed by solar energy harvesting and radiative sky cooling. Mainstream solar energy technologies, including photovoltaic conversion (PV), photothermal conversion (PT), and photovoltaic/thermal con... Read More about Applications of radiative sky cooling in solar energy systems: Progress, challenges, and prospects.

An innovative retrofit Motivation-Objective-Criteria (MOC) approach integrating homeowners’ engagement to unlocking low-energy retrofit in residential buildings (2022)
Journal Article
Wang, Y., Qu, K., Chen, X., Gan, G., & Riffat, S. (2022). An innovative retrofit Motivation-Objective-Criteria (MOC) approach integrating homeowners’ engagement to unlocking low-energy retrofit in residential buildings. Energy and Buildings, 259, Article 111834. https://doi.org/10.1016/j.enbuild.2022.111834

According to the EU Commission projection (2016/547/EU), the current average renovation rate is far below the expected rate of 3% to achieve carbon neutrality in building sectors by 2050. This is due to the fact that, during the building retrofit opt... Read More about An innovative retrofit Motivation-Objective-Criteria (MOC) approach integrating homeowners’ engagement to unlocking low-energy retrofit in residential buildings.

Performance evaluation of combined solar chimney and radiative cooling ventilation (2021)
Journal Article
Suhendri, S., Hu, M., Su, Y., Darkwa, J., & Riffat, S. (2022). Performance evaluation of combined solar chimney and radiative cooling ventilation. Building and Environment, 209, Article 108686. https://doi.org/10.1016/j.buildenv.2021.108686

Passive cooling is inevitable for buildings to be resilient to global warming. While many forms of passive cooling techniques have been developed, passive radiative cooling (RC), as an emerging technology, is still not widely applied in buildings. Du... Read More about Performance evaluation of combined solar chimney and radiative cooling ventilation.

Experimental study on a hybrid solar photothermic and radiative cooling collector equipped with a rotatable absorber/emitter plate (2021)
Journal Article
Hu, M., Zhao, B., Suhendri, S., Cao, J., Wang, Q., Riffat, S., …Pei, G. (2022). Experimental study on a hybrid solar photothermic and radiative cooling collector equipped with a rotatable absorber/emitter plate. Applied Energy, 306(Part B), Article 118096. https://doi.org/10.1016/j.apenergy.2021.118096

Taking the frigid outer space as the heat sink, a terrestrial body can cool itself to a sub-ambient temperature via radiative sky cooling (RC) scheme. However, poor seasonal and regional adaptabilities and low cooling power density of the RC technolo... Read More about Experimental study on a hybrid solar photothermic and radiative cooling collector equipped with a rotatable absorber/emitter plate.

Development and testing of a PCM enhanced domestic refrigerator with use of miniature DC compressor for weak/off grid locations (2021)
Journal Article
Riffat, J., Kutlu, C., Tapia-Brito, E., Tekpetey, S., Agyenim, F. B., Su, Y., & Riffat, S. (2021). Development and testing of a PCM enhanced domestic refrigerator with use of miniature DC compressor for weak/off grid locations. International Journal of Green Energy, 19(10), 1118-1131. https://doi.org/10.1080/15435075.2021.1984244

This paper presents the development of a sustainable and affordable domestic refrigerator for rural areas where grid setting is weak or non-existent. The refrigerator uses a miniature refrigeration unit based on a micro direct current (DC) compressor... Read More about Development and testing of a PCM enhanced domestic refrigerator with use of miniature DC compressor for weak/off grid locations.

Feasibility of realizing daytime solar heating and radiative cooling simultaneously with a novel structure (2021)
Journal Article
Hu, M., Zhao, B., Suhendri, Cao, J., Wang, Q., Riffat, S., …Pei, G. (2021). Feasibility of realizing daytime solar heating and radiative cooling simultaneously with a novel structure. Sustainable Cities and Society, 74, Article 103224. https://doi.org/10.1016/j.scs.2021.103224

Recent breakthroughs in preparing near-perfect emitters have made it possible to realize daytime radiative cooling under intensive solar radiation. However, a typical radiative cooler cannot deliver heat and may even cause an undesired cooling effect... Read More about Feasibility of realizing daytime solar heating and radiative cooling simultaneously with a novel structure.

Life cycle assessment of a novel biomass-based aerogel material for building insulation (2021)
Journal Article
Wang, Y., Rasheed, R., Jiang, F., Rizwan, A., Javed, H., Su, Y., & Riffat, S. (2021). Life cycle assessment of a novel biomass-based aerogel material for building insulation. Journal of Building Engineering, 44, Article 102988. https://doi.org/10.1016/j.jobe.2021.102988

There is a growing interest in accounting for the environmental externalities and the greenhouse gas (GHG) emissions associated with the building industry. This study examines the life cycle environmental impacts of a novel biomass-based aerogel buil... Read More about Life cycle assessment of a novel biomass-based aerogel material for building insulation.