Improvement of thermal environment in the outdoor atrium by employing the spray system DOI Creative Commons
Nan Ding,

Jingyu Su,

Feng Pang

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Oct. 5, 2024

Outdoor atriums have recently been applied with increasing frequency for natural illumination, but they produce a harsh thermal environment easily in summer. Moreover, overheating of the outdoor atrium necessitates air-conditioning to moderate indoor comfort. Simultaneously, substantial heat emissions from units worsen environment, creating vicious cycle. Traditional passive evaporative methods involving water and greenery, while capable regulating suffer low efficiency pose significant challenges. To improve atriums, spray system was employed due its high cooling efficiency, especially open or semi-open spaces. In this study, comparative experiment conducted evaluate effectiveness using Furthermore, employing high-efficiency through spraying disrupt cycle environments. The dual goals include conditions also mitigating local island effect. Temperature humidity distribution within adjacent hallways were monitored, along impact on operation consumption neighboring offices. Results showed that significantly improved atrium, reducing average peak air temperatures by 0.94–2.83 °C 2.92–5.21 °C, respectively. It resulted drop temperature 0.56–1.62 2.31–3.25 hallways. This effectively eased issue these areas raising comfort level office predicted mean vote decreased 1.46 0.87, indicating improvement daily energy reduced 10.6–12.4% study provided valuable guidance improving environments atrium.

Language: Английский

Thermal performance assessment of the dynamic rotating latent-energy-storage envelope (DRLESE) during winter DOI Creative Commons
Xi Meng

Case Studies in Thermal Engineering, Journal Year: 2024, Volume and Issue: 60, P. 104671 - 104671

Published: June 10, 2024

Language: Английский

Citations

19
Effect of the integration mode of phase change materials on thermal performance of radiant floor heating systems DOI
Zhenyu Wang, Weijun Gao, Yanna Gao

et al.

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 110, P. 115275 - 115275

Published: Jan. 6, 2025

Language: Английский

Citations

2
Analysis on rotation timing of dynamic Rotating latent-energy-storage envelope (RLESE) DOI Creative Commons
Xi Meng

Developments in the Built Environment, Journal Year: 2024, Volume and Issue: 19, P. 100498 - 100498

Published: July 6, 2024

The application efficiency of the Dynamic Rotating Latent-Energy-Storage Envelope (DRLESE) system is highly contingent upon dynamic rotation timings. To gain optimal timings, six different timings were examined by employing liquid fraction, thermal storage and release, surface temperature heat flow. numerical transfer method was employed verified an experiment. Results indicated that initial occurs in forenoon, when inner aligns with sol-air temperature. Subsequently, achieving secondary possible afternoon equals PCM (Phase Change Material). Under these optimized significant enhancements performance DRLESE observed. By optimizing indoor effective release can reach up to 3182.9 kJ/Day effectiveness percentage exceeding 99.99%, flow increased 5.86%–12.26%.

Language: Английский

Citations

15
A review of subjective evaluation, physiological indicators and cognitive performance in indoor light environment: The role of illuminance and correlated color temperature DOI
Chao Liu, Jiaxin Li,

Xuening Wang

et al.

Journal of Building Engineering, Journal Year: 2024, Volume and Issue: 95, P. 110224 - 110224

Published: July 15, 2024

Language: Английский

Citations

6
Winter indoor thermal environment and livability analysis of traditional residential houses in northeast Sichuan, China DOI Creative Commons

Chaoping Hou,

Weijun Gao, Yanan Gao

et al.

Case Studies in Thermal Engineering, Journal Year: 2024, Volume and Issue: 60, P. 104636 - 104636

Published: June 3, 2024

With the rapid development of national economy, increasing attention has been given to living environment in rural areas, especially indoor thermal and wind environments. This study conducted on-site measurements questionnaire surveys during winter five villages northeastern Sichuan. Eighty-nine traditional residences were selected investigate their fundamental characteristics, environment, humidity conditions, comfort levels. Questionnaires comparative experiments also with natives locals. combination objective data subjective feedback provides a comprehensive perspective for assessing environment. The results showed that when expressed as neutral temperature humidity, difference was 2.36°C, little difference. Residents exhibited higher tolerance towards local than nonlocal volunteers, who greater sensitivity it. In addition, residents had Predicted Mean Vote (PMV) value -0.69 heat acceptance -1.78, while non-local volunteers PMV -0.76 -1.32. A detailed evaluation analysis relationship between human residential houses carried out, providing technical guidance energy conservation insulation buildings.

Language: Английский

Citations

2
Restorative benefits of classroom windows: a study on the effect of window:wall ratio on task load and learning performance based on VR technology DOI Creative Commons
Yalin Zhang, Xiaotong Jing, Chao Liu

et al.

International Journal of Low-Carbon Technologies, Journal Year: 2024, Volume and Issue: 19, P. 1491 - 1500

Published: Jan. 1, 2024

Abstract As a connection to the outdoor environment, windows can relieve stress, emotional, and cognitive fatigue that building users face from long hours of study. It provides restorative function for between study work, thus reducing task load improving learning performance. To investigate effects different window:wall ratios (WWRs) on performance, virtual reality (VR) technology was used build classrooms with WWRs 25%, 40%, 55%, 70%, 85%. The performances, physiological data, subjective evaluations 34 college studies were analyzed. found highest psychological loads in 25% WWR lowest when 55%. Participants performed best Further multiobjective optimization particle swarm 58.41–62.24% not only contributed users’ physical mental happiness but also improved their efficiency. In addition, participant’s HRV-LF/HF EEG β wave values significantly correlated performance test. These findings provide reference spatial design school foundation further research into relationship HRV indicators

Language: Английский

Citations

2
Enhanced Ensemble Learning-Based Uncertainty and Sensitivity Analysis of Ventilation Rate in a Novel Radiative Cooling Building DOI Creative Commons

Majid Mohsenpour,

Mohsen Salimi,

A. Kermani

et al.

Heliyon, Journal Year: 2024, Volume and Issue: 11(1), P. e41572 - e41572

Published: Dec. 31, 2024

Language: Английский

Citations

2
Effects of winter climate parameters on the thermal performance of dynamic rotating latent-energy-storage envelope (DRLESE) DOI Creative Commons
Xudong Xie, Wenkai Fu,

Zihe Wang

et al.

Energy Reports, Journal Year: 2024, Volume and Issue: 12, P. 1464 - 1473

Published: July 26, 2024

Language: Английский

Citations

1
Integrating the Living Wall with Mechanical Ventilation to Improve Indoor Thermal Environment in the Transition Season DOI Open Access

Fudan Liu,

Xi Meng

Sustainability, Journal Year: 2024, Volume and Issue: 16(10), P. 4300 - 4300

Published: May 20, 2024

A living wall, when integrated with a mechanical ventilation system, can effectively improve the indoor thermal environment and reduce CO2 concentration during transition season. In this study, control experiment was conducted to analyze effect of wall (LW-V) on air quality. During experiment, temperature, relative humidity, speed, were measured, while skin temperature monitored subjective questionnaires administered 60 subjects. The results show that improved by employing LW-V average decreasing 1.45 °C, humidity increased 19.1%. Due plant photosynthesis, concentrations reduced 13.83 ppm. Meanwhile, mean 0.18 °C closer neutral temperature. Questionnaire analysis reveals system overall freshness sensation comfort level 1.09 0.53, respectively. as well quality season significantly.

Language: Английский

Citations

0
A Contrast Experiment on the Ventilation Direction towards Human Head in Personalized Environmental Control System (PECS) DOI Open Access

Canyang Li,

Wenkai Fu, Xi Meng

et al.

Sustainability, Journal Year: 2024, Volume and Issue: 16(13), P. 5704 - 5704

Published: July 3, 2024

A heating, ventilation, and air-conditioning system is designed for the entire space but falls short in meeting diverse individual needs. Therefore, personalized environmental control proposed to address thermal requirements it has been widely accepted produced have significant practical value humans. In order enhance comfort level based on PECS, impact of airflow direction towards head terms physiological psychological sensations was investigated. Different directions were considered as follows: front blowing (FB-PV), side (SB-PV), back (BB-PV), top (TB-PV), a group No-PV. total 56 participants invited assess environment, their skin temperature measured. The results revealed that improved reduced mean by 0.4–0.6 °C, with FB-PV showing particularly promising results. TB-PV demonstrated highest score +1.05 (slightly higher than “Just comfortable (+1)”) scored significantly overall willingness at +1.21 (higher “Willing (+1)”). Conversely, resulted discomfort due restricted breathing under continuous condition.

Language: Английский

Citations

0