Yong Sun

Feb 10, 2025 | nature.com | Zhonghua Zhao |Li Zhu |Yiping Wang |Yong Sun |Dapeng Bi |Qunwu Huang

In the operation of public toilets, a significant amount of ventilation is commonly employed to maintain proper air quality. However, this inevitably leads to energy wastage and compromises the thermal comfort within the area during winter. To enhance and optimize the ventilation of traditional toilets, this research adopts computational fluid dynamics simulation techniques. It conducts both qualitative and quantitative analyses of the performance of toilet bowl ventilation (TBV) technology across various airflow conditions, commode models, H2S and NH3 odors. Additionally, it compares the exhaust effectiveness of different ventilation strategies and evaluates the energy-saving capabilities of the TBV technology. In both models under study, the wind direction was directed towards the interior of the toilet. Even when the mass concentration exceeded the allowable limit, the iso-surface revealed that all excessive H2S and NH3 volumes were successfully contained within the toilet bowl. The findings indicate that by applying TBV technology in public toilets, the airflow can be reduced to 10 m³/h during toilet usage while still fulfilling the requirements for air quality and energy conservation. This method exhibits a thermal energy saving efficiency of 8.2 W/°C. This investigation effectively minimizes air heat dissipation resulting from the ventilation process and reduces fan power consumption while ensuring proper effluent discharge, thus laying a solid foundation for the promotion and application of the TBV technology.

Dec 5, 2024 | 4spepublications.onlinelibrary.wiley.com | Jianjun Yin |Yilan Wu |Yong Sun |Jun Yang |Kang Wu |Ziliu Xiong

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Jun 11, 2024 | agupubs.onlinelibrary.wiley.com | Yong Sun |Ning Zhang |Xiangyu Ao |Ying Gao

1 Introduction The world has undergone rapid urbanization in the past few decades. The urban population is projected to reach 6.7 billion by 2050, when more than two-thirds of the world's population will live in cities (United Nations et al., 2019).

Apr 19, 2024 | dialnet.unirioja.es | Yong Sun

Exploring the Construction of Curriculum System of Theater and Film Studies Based on ADDIE ModelAutores: Yong SunLocalización: Applied Mathematics and Nonlinear Sciences, ISSN-e 2444-8656, Vol. 9, Nº. 1, 2024Idioma: inglésEnlacesTexto completoResumenIn order to develop a first-class major in theater, film and television and achieve the goal of “cultivating artistic talents”, this paper believes that the development of the discipline should focus on “creativity” and “originality”.

Nov 21, 2023 | mdpi.com | Lei Liu |Yong Sun |Min Ji |Huimeng Wang

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