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Professor SAFFA RIFFAT's Outputs (14)

Effect of vacuum scheme on radiative sky cooling performance (2022)
Journal Article
Hu, M., Zhao, B., Suhendri, Cao, J., Wang, Q., Riffat, S., Su, Y., & 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.

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., Su, Y., & 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., Su, Y., & 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., Riffat, S., Su, Y., & 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.