We investigate and test the effectiveness of a novel window windcatcher device (WWC), as a means of improving natural ventilation in buildings. Using ANSYS CFX, the performance of the window-windcatcher is compared to a control case (no window-windcatcher), in three different geographic locations (Cardiff, Doha and Amman) which are representative of three different types of atmospheric conditions. The proposed window-windcatcher has been shown to improve both thermal comfort and indoor air quality by increasing the actual-to-required ventilation ratio by up to 9% compared to the control case as per the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) standards. In addition, the locations with minimum velocities have been identified. Those locations correspond to the regions with a lower infection risk of spreading airborne viruses such as SARS-CoV-2, which is responsible for the COVID-19 pandemic.

Window-windcatchers, a passive ventilation method, have been shown to improve ventilation and enhance thermal comfort. Preliminary characterization of a novel window-windcatcher has been undertaken in a previous work, but no relationship had been identified between the actual ventilation rate ($Q_{act}$), the wind velocity ($V_{Tw}$) and crucial design parameters such as the fins angle ($ϴ$)). In this paper, the relationship that quantifies how the window-windcatcher’s performance depends on $V_{Tw}$ and $ϴ$ was determined. Additionally, for the first time, the ventilation performance of the window-windcatcher was optimized by studying the effects of $ϴ$ and the fins-wall distance ($D_{W-f}$) through a Computational Fluid Dynamics parametric study (ANSYS)|. In this optimization approach, the angle $ϴ$ and the distance $D_{W-f}$ corresponding to the maximum actual-to-required ventilation rate were found to be 80° and 45 cm, respectively. The actual ventilation rate increased by approximately 13.2% compared with the baseline design of the windcatcher ($ϴ$ and $D_{W-f}$ equal to 40° and 45 cm, respectively); this corresponds to an increase of approximately 8.6% in the actual-to-required ventilation rate, according to the ASHRAE standards.

Previous studies on window-windcatchers have shown their effectiveness in capturing the prevailing wind and redirecting it into a building, increasing the actual-to-required ventilation ratio by 9%, above what is required by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE). However, the effect of implementing the proposed system on energy performance, energy costs, and thermal comfort has not been studied. Therefore, here, we investigate and test the implementation of the window-windcatcher on a typical residential building, using a validated DesignBuilder model. Compared to the base case (no window-windcatcher), the total annual energy consumption of the entire building (${\mathrm{E}}_{\mathrm{tot},\mathrm{b}}$), and consequently the cost, is reduced by approximately 23.3% (i.e., from 18,143 kWh/year to 13,911 kWh/year) when using the window-windcatcher. The total annual reduction in thermal discomfort hours is estimated to be 290 h, which corresponds to an average monthly reduction of approximately 24 h.

Architecture is a profession in a perpetual state of change. Thus, it is essential for students to have a solid research foundation on which they can apply their knowledge and evidence-based solutions to architectural design, to enhance the quality of the built environment. Despite the fact that students’ views and engagement in research have been receiving great attention recently, no studies have yet been conducted to assess Jordanian students’ perspectives regarding scientific research. This paper examines the attitudes of a Jordanian university’s architecture students toward scientific research. The descriptive study sampled 184 students from the College of Architecture who were asked to fill out a self-administered questionnaire. The data were both descriptively and quantitively analyzed using correlation, a Mann-Whitney U Test, and a Kruskal-Wallis Variance Test. The findings revealed that female students’ outlook on research was more optimistic than that of male students. Moreover, fifth-year students had the least favorable opinions compared to third and fourth-year students. Furthermore, participants who followed architectural channels and broadcasts had more favorable sentiments toward research than those who did not. Finally, participants with previous experience in scientific research had fewer unfavorable opinions regarding research than those who were inexperienced. In conclusion, the majority of the students who participated in this study had positive attitudes toward scientific research. However, there is still a need to promote a culture of scientific research among undergraduate students, encouraging them to engage in scientific activities and providing them with opportunities to conduct research that will contribute to the architectural scene in Jordan.