Abstract
The purpose of this study is to investigate the relationship between the greenhouse effect and the overuse of electricity and energy under a sustainable environment. The goal is to investigate the airflow that is induced by ceiling fans, by measuring human body temperature. In the simulation model, the thermal plume phenomenon is observed in the indoor environment. By changing the ceiling fan parameters, the influence of the airflow is investigated by practical measurement of human body temperature. The indoor convective heat transfer is enhanced by installing a ceiling fan, which affects the whole body thermal sensation (WBTS). Different scenarios are reviewed by adjusting the fan speed in the simulation model, so that the distribution of human body temperature can be determined. By modeling the blade plane of the ceiling fan, the airflow characteristics can be determined by making the simulation model rotate in order to assess the thermal comfort characteristics. As the ceiling fan generates circulation within the domain, the thermal comfort is significantly enhanced. By keeping a reasonable thermal comfort level, a higher room temperature or a higher heat load is allowed so that a sustainable environment can be maintained without affecting the indoor thermal comfort or the efficiency of energy usage.
Highlights
The topic of sustainable development deals with satisfying modern people’s demands under the conditions of environmental protection, without affecting the needs of the generations
The goal of this study was to enhance the airflow that is generated by a ceiling fan, and to compare the results obtained by computational fluid dynamics (CFD) simulation to the results obtained by real experiments
One of the important topics for the design of a sustainable and healthy environment is the supply of air that provides thermal comfort for human bodies within an office
Summary
The topic of sustainable development deals with satisfying modern people’s demands under the conditions of environmental protection, without affecting the needs of the generations. Since one of the efficient ways of providing indoor cooling is by the use of ceiling fans, the goal of this study is to enhance thermal comfort without compromising energy consumption and the greenhouse effect. The air circulation that is generated within a room can improve the airflow distribution and enhance thermal comfort through the improved cooling of the human body. The cooling effect of a ceiling fan is affected by several fan parameters, including the rotating speed, diameter, blade count, blade angle, and location [5,6,7]. With a diameter of 1400 mm, they investigated the influence of different slant angles so that the blade tip speed was different [1] They compared three commercially available ceiling fans to the fan specimen. Fan #5 had the highest fan speed at the central portion of the impeller [10]
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