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Trends on sustainability in Saudi building industry: advances and challenges (2020)
Presentation / Conference Contribution
Alyami, M., Omer, S., & Riffat, S. (2019, August). Trends on sustainability in Saudi building industry: advances and challenges. Presented at 18th International Conference on Sustainable Energy Technologies, Kuala Lumpur, Malaysia

In developing countries like Saudi Arabia, the experience of a rapid rate of urbanization and infrastructure expansion, especially with respect to buildings, is immense. In Saudi Arabia, the role of buildings is even more important as they account fo... Read More about Trends on sustainability in Saudi building industry: advances and challenges.

A simulation study on performance improvement of solar assisted heat pump hot water system by novel controllable crystallization of supercooled PCMs (2020)
Journal Article
Kutlu, C., Zhang, Y., Elmer, T., Su, Y., & Riffat, S. (2020). A simulation study on performance improvement of solar assisted heat pump hot water system by novel controllable crystallization of supercooled PCMs. Renewable Energy, 152, 601-612. https://doi.org/10.1016/j.renene.2020.01.090

Domestic hot water (DHW) has a significant share in building’s energy consumption. In order to reduce this consumption, various solutions have been proposed such as controlling the system in an efficient way, using renewable sources and using phase c... Read More about A simulation study on performance improvement of solar assisted heat pump hot water system by novel controllable crystallization of supercooled PCMs.

Review of Heat and Mass Transfer Enhancement Techniques and Current Advancement for Adsorption Heating/Cooling Systems (2019)
Journal Article
Omer, S., Wajid, N. M., Mompuouo, B., & Riffat, S. B. (2019). Review of Heat and Mass Transfer Enhancement Techniques and Current Advancement for Adsorption Heating/Cooling Systems. International Journal of Low-Carbon Technologies, 14(4), 461–467. https://doi.org/10.1093/ijlct/ctw010

Adsorption heating/cooling became an alternative to vapour compression system due to low ozone depletion potential (ODP) and global warming potential (GWP). However, more investigation is required due their low efficiency when compared to conventiona... Read More about Review of Heat and Mass Transfer Enhancement Techniques and Current Advancement for Adsorption Heating/Cooling Systems.

Theoretical and experimental investigations of different area ratios of a supersonic ejector driven by compressed air (2019)
Journal Article
AL-nuaimi, A., Worall, M., & Riffat, S. (2019). Theoretical and experimental investigations of different area ratios of a supersonic ejector driven by compressed air. International Journal of Low-Carbon Technologies, 14(4), 550-560. https://doi.org/10.1093/ijlct/ctz050

Ejectors have some advantages such as being simple, reliable and no moving parts. They can be used in air-conditioning and refrigeration applications. This paper presents a comparison of ejector performance, primary pressure (Pp), back pressure (Pb)... Read More about Theoretical and experimental investigations of different area ratios of a supersonic ejector driven by compressed air.

The advances of polysaccharide-based aerogels: Preparation and potential application (2019)
Journal Article
Wang, Y., Su, Y., Wang, W., Fang, Y., Riffat, S. B., & Jiang, F. (2019). The advances of polysaccharide-based aerogels: Preparation and potential application. Carbohydrate Polymers, 226, Article 115242. https://doi.org/10.1016/j.carbpol.2019.115242

Polysaccharide-based aerogels have high application value as one kind of unique functional materials. Not only has it high porosity and low-density, but also the non-toxicity and biodegradability. In recent decades, a variety of natural raw materials... Read More about The advances of polysaccharide-based aerogels: Preparation and potential application.

Fabrication and characterization of a novel konjac glucomannan-based air filtration aerogels strengthened by wheat straw and okara (2019)
Journal Article
Wang, W., Fang, Y., Ni, X., Wu, K., Wang, Y., Jiang, F., & Riffat, S. B. (2019). Fabrication and characterization of a novel konjac glucomannan-based air filtration aerogels strengthened by wheat straw and okara. Carbohydrate Polymers, 224, Article 115129. https://doi.org/10.1016/j.carbpol.2019.115129

The konjac glucomannan (KGM)-based aerogel as an air filtration material was fabricated through sol-gel and freeze-drying methods. Results showed that gelatin and starch addition could increase the filtration efficiency and compressive strength of ae... Read More about Fabrication and characterization of a novel konjac glucomannan-based air filtration aerogels strengthened by wheat straw and okara.

A Novel and Accurate Method for Moisture Adsorption Isotherm Determination of Sultana Raisins (2019)
Journal Article
Li, J., Dong, L., Xiao, M., Qiao, D., Wu, K., Jiang, F., Riffa, S. B., & Su, Y. (2019). A Novel and Accurate Method for Moisture Adsorption Isotherm Determination of Sultana Raisins. Food Analytical Methods, 12(11), 2491-2499. https://doi.org/10.1007/s12161-019-01599-0

A novel method (dynamic water transfer–based water activity analyzer (DWT) method) based on Fick’s law of diffusion for the accurate measurement of moisture sorption isotherm (MSI) has been developed and was compared with saturated salt solutions (SS... Read More about A Novel and Accurate Method for Moisture Adsorption Isotherm Determination of Sultana Raisins.

Effect of drying temperature on structural and thermomechanical properties of konjac glucomannan-zein blend films (2019)
Journal Article
Li, C., Wu, K., Su, Y., Riffat, S. B., Ni, X., & Jiang, F. (2019). Effect of drying temperature on structural and thermomechanical properties of konjac glucomannan-zein blend films. International Journal of Biological Macromolecules, 138, 135-143. https://doi.org/10.1016/j.ijbiomac.2019.07.007

Konjac glucomannan (KGM)/zein blend films were successfully prepared by solution casting at different drying temperatures (40, 50, 60, 70 and 80 °C). The effects of drying temperature on the films' structural, thermomechanical, mechanical and water b... Read More about Effect of drying temperature on structural and thermomechanical properties of konjac glucomannan-zein blend films.

Experimental Studies of a Pulse Pressurisation Technique for Measuring Building Airtightness (2019)
Journal Article
Zheng, X., Zu, Y., Cooper, E., Gillott, M., Tetlow, D., Riffat, S., & Wood, C. (2019). Experimental Studies of a Pulse Pressurisation Technique for Measuring Building Airtightness. Future Cities and Environment, 5(1), 1-17. https://doi.org/10.5334/fce.66

A pulse pressurisation technique is developed and utilised for determining building leakage at low pressure, based on a "quasi-steady pulse" concept. The underlying principle of the technique is to subject the building envelope to a known volume chan... Read More about Experimental Studies of a Pulse Pressurisation Technique for Measuring Building Airtightness.

Proceedings of the 17th International Conference on Sustainable Energy Technologies – SET 2018, 21st - 23rd August 201 8 , Wuhan, China : Sustainable Energy Technologies f or Eco Cities and Environment (2019)
Presentation / Conference Contribution
(2018, August). Proceedings of the 17th International Conference on Sustainable Energy Technologies – SET 2018, 21st - 23rd August 201 8 , Wuhan, China : Sustainable Energy Technologies f or Eco Cities and Environment. Presented at 17th International Conference on Sustainable Energy Technologies (SET 2018), Wuhan, China

Understanding the multi-scale structure and digestion rate of water chestnut starch (2019)
Journal Article
Qiao, D., Tu, W., Zhang, B., Wang, R., Li, N., Nishinari, K., Riffat, S., & Jiang, F. (2019). Understanding the multi-scale structure and digestion rate of water chestnut starch. Food Hydrocolloids, 91, 311-318. https://doi.org/10.1016/j.foodhyd.2019.01.036

Using combined techniques and two comparisons (maize and cassava starches), this work concerns the multi-scale structure and digestion rate of water chestnut tuber starch. Among the starches, the water chestnut starch showed altered hierarchical stru... Read More about Understanding the multi-scale structure and digestion rate of water chestnut starch.

A novel approach to thermal storage of direct steam generation solar power systems through two-step heat discharge (2018)
Journal Article
Li, J., Gao, G., Kutlu, C., Liu, K., Pei, G., Su, Y., Ji, J., & Riffat, S. (2019). A novel approach to thermal storage of direct steam generation solar power systems through two-step heat discharge. Applied Energy, 236, 81-100. https://doi.org/10.1016/j.apenergy.2018.11.084

© 2018 Elsevier Ltd Steam accumulators are the only commercial solution for heat storage of direct steam generation (DSG) solar thermal power plants. Current accumulators have low storage capacity as the turbine suffers from inefficient off-design op... Read More about A novel approach to thermal storage of direct steam generation solar power systems through two-step heat discharge.

A novel hybrid dew point cooling system for mobile applications (2018)
Presentation / Conference Contribution
Worall, M., Dicken, A., Shatat, M., Gledhill, S., & Riffat, S. (2018, September). A novel hybrid dew point cooling system for mobile applications. Presented at 8th Heat Powered Cycles Conference 2018, Bayreuth, Germany

A novel dew point cooling system for truck cabin cooling has been designed and tested, which shows excellent performance in environments of low to medium relative humidity. Experimental results showed that cooling capacity of over 1kW could be achiev... Read More about A novel hybrid dew point cooling system for mobile applications.

Experimental studies of a pulse pressurisation technique for measuring building airtightness (2018)
Presentation / Conference Contribution
Zheng, X., Cooper, E., Zu, Y., Gillott, M., Tetlow, D., Riffat, S., & Wood, C. (2018, August). Experimental studies of a pulse pressurisation technique for measuring building airtightness. Presented at 17th International Conference on Sustainable Energy Technology (SET 2018), Wuhan, China

A pulse pressurisation technique is developed and utilised for determining building leakage at low pressure, based on a 'quasi-steady pulse' concept. The underlying principle of the technique is to subject the building envelope to a known volume chan... Read More about Experimental studies of a pulse pressurisation technique for measuring building airtightness.

Experimental study on a novel photovoltaic thermal system using amorphous silicon cells deposited on stainless steel (2018)
Journal Article
Li, J., Ren, X., Yuan, W., Li, Z., Pei, G., Su, Y., Çağrı, K., Ji, J., & Riffat, S. (2018). Experimental study on a novel photovoltaic thermal system using amorphous silicon cells deposited on stainless steel. Energy, 159, https://doi.org/10.1016/j.energy.2018.06.127

Amorphous silicon (a-Si) cells are able to perform better as temperature increases due to the effect of thermal annealing. a-Si cells have great potential to solve or ease the problems of high power temperature coefficient, large thermal stress cause... Read More about Experimental study on a novel photovoltaic thermal system using amorphous silicon cells deposited on stainless steel.

A comprehensive investigation of using mutual air and water heating in multi-functional DX-SAMHP for moderate cold climate (2018)
Journal Article
Mohamed, E., Riffat, S., Omer, S., & Zeinelabdien, R. (2019). A comprehensive investigation of using mutual air and water heating in multi-functional DX-SAMHP for moderate cold climate. Renewable Energy, 130, 582-600. https://doi.org/10.1016/j.renene.2018.06.075

Solar energy assisted heat pump systems (SAHP) have been used in this application. SAHP system with solar collectors and the heat pump are combined into one unit so as to convey the solar energy to the refrigerant. The solar collector is used as the... Read More about A comprehensive investigation of using mutual air and water heating in multi-functional DX-SAMHP for moderate cold climate.

Economic evaluation of installation of standalone wind farm and Wind+CAES system for the new regulating tariffs for renewables in Egypt (2018)
Journal Article
Ramadan, O., Omer, S., Ding, Y., Jarimi, H., Chen, X., & Riffat, S. (2018). Economic evaluation of installation of standalone wind farm and Wind+CAES system for the new regulating tariffs for renewables in Egypt. Thermal Science and Engineering Progress, 7, 311-325. https://doi.org/10.1016/j.tsep.2018.06.005

Compressed Air Energy Storage (CAES) is widely recognized as a viable solution for large-scale grid integrated renewable energy systems in terms of load levelling to solve/minimize the intermittency effect of renewable energy systems especially with... Read More about Economic evaluation of installation of standalone wind farm and Wind+CAES system for the new regulating tariffs for renewables in Egypt.

A comprehensive review on 2D and 3D models of vertical ground heat exchangers (2018)
Journal Article
Cui, Y., Zhu, J., Twaha, S., & Riffat, S. (2018). A comprehensive review on 2D and 3D models of vertical ground heat exchangers. Renewable and Sustainable Energy Reviews, 94, https://doi.org/10.1016/j.rser.2018.05.063

The ground source heat pumps (GSHPs) have been extensively applied to commercial and residential buildings owing to their high-energy efficiencies and low running costs. The key component of the GSHP is a ground heat exchanger (GHE). The state-of-the... Read More about A comprehensive review on 2D and 3D models of vertical ground heat exchangers.