Subjective assessment of thermal comfort by radiant cooling in a tropical hot humid climate

Aryal, Ashmin; Chaiwiwatworakul, Pipat; Chirarattananon, Surapong; Wongsuwan, Wipawadee

doi:10.1016/j.enbuild.2021.111601

Cited by 5 publications

(2 citation statements)

References 26 publications

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“…Other than that, the lighting level could also influence the thermal environment of the atrium in the summer [25]. The present study shows that the cooling energy demand is high in several buildings with hot-humid climates [26][27][28]. Mixedmode cooling can successfully minimize the energy consumption of building cooling while ensuring that occupant thermal comfort and indoor air quality criteria are met.…”

Section: Introductionmentioning

confidence: 75%

Thermal Performance Investigation at Different Temperature and Airflow Settings in a Conference Hall of Expo Building

et al. 2022

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The airflow distribution for a large space, such as a conference hall, is quite challenging to achieve a good and uniform thermal distribution. In the recent study, insufficient quantitative knowledge has been provided, notably for the appropriate supply air temperature and air velocity for the conference hall environment. In this study, a full-scale conference hall was simulated extensively for an expo building in Taiwan. A total of nine experiment numbers were carried out with various supply air temperature and air velocity settings. Through the use of a CFD approach, this study seeks to identify the ideal parameters for a comfortable and acceptable airflow distribution and temperature, with an eye toward potential compromises with an energy-efficient approach. The results demonstrate that the temperature distribution ranges from 18 to 26 °C, indicating an acceptable indoor thermal environment, depending on the parameter settings. The best settings for providing a pleasant indoor thermal environment are with a supply air temperature and air velocity of 15 °C and 1 m/s, which can keep the PMV index between −0.5 and 0.5. Utilizing a greater temperature setting may save energy, but sufficient air velocity must be addressed in order to meet the indoor thermal conditions. Furthermore, a greater air velocity may generate more noise and disrupt the situation in the conference hall, so it must be selected specifically.

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Section: Introductionmentioning

confidence: 75%

Thermal Performance Investigation at Different Temperature and Airflow Settings in a Conference Hall of Expo Building

et al. 2022

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“…Teufl et al (2021) showed how personalised radiant cooling could provide acceptable comfort levels at an ambient air temperature of 28°C. They also highlighted that air movement was key in influencing the subject's preference for radiant cooling (Aryal et al 2022;Teufl et al 2021). Pasut et al (2015) demonstrated how the use of heated/cooled chairs provided comfortable conditions for 92% of the subjects in a range of temperatures from 18 to 29°C.…”

Section: Recognise Individual Cooling Needs Through Occupant-centric ...mentioning

confidence: 99%

Overcoming the incumbency and barriers to sustainable cooling

Lizana

Miranda

Gross³

et al. 2022

Buildings and Cities

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This article examines cooling in the built environment, an area of rapidly rising energy demand and greenhouse gas emissions. Specifically, the status quo of cooling is assessed and proposals are made for how to advance towards sustainable cooling through five levers of change: social interactions, technology innovations, business models, governance and infrastructure design. Achieving sustainable cooling requires navigating the opportunities and barriers presented by the incumbent technology that currently dominates the way in which cooling is provided-the vapour-compression refrigerant technology (or airconditioners). Air-conditioners remain the go-to solution for growing cooling demand, with other alternatives often overlooked. This incumbent technology has contributed to five barriers hindering the transition to sustainable cooling: (1) building policies based exclusively on energy efficiency; (2) a focus on temperature rather than other thermal comfort variables; (3) building-centric design of cooling systems instead of occupantcentric design; (4) businesses guided by product-only sales; and (5) lack of innovation beyond the standard operational phase of the incumbent technology. Opportunities and priority actions are identified for policymakers, cooling professionals, technicians and citizens to promote a transition towards sustainable cooling.

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Eco-friendly preparation of durable superhydrophobic porous film for daytime radiative cooling

et al. 2022

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Subjective assessment of thermal comfort by radiant cooling in a tropical hot humid climate

Cited by 5 publications

References 26 publications

Thermal Performance Investigation at Different Temperature and Airflow Settings in a Conference Hall of Expo Building

Thermal Performance Investigation at Different Temperature and Airflow Settings in a Conference Hall of Expo Building

Overcoming the incumbency and barriers to sustainable cooling

Eco-friendly preparation of durable superhydrophobic porous film for daytime radiative cooling

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