Print Email Facebook Twitter Indoor training and thermal comfort Title Indoor training and thermal comfort: Improving thermal comfort of human subjects training indoors by a configuration of parameters, specifically airflows Author Theodoridou, E. Contributor Bluyssen, P.M. (mentor) Faculty Civil Engineering and Geosciences Department Structural Engineering Programme Building Engineering Date 2016-08-31 Abstract In our modern cities, the large majority of the activities take place indoors and training is no exception. Thermal comfort at high metabolic rates inside buildings is to be maintained as much as possible without sacrificing energy saving. Indoor thermal comfort level is the result of a combination of various parameters and air movement is one of them together with air temperature, air humidity and radiant temperature. Making use of localized airflows can compensate for the necessity of cooling a room. Most research, though, has been focused on people with low metabolic rate, meaning that more research on improving thermal comfort of people training is required. The aim of this study is to test how airflows with different characteristics and more specifically air velocity, turbulence intensity and power spectral density can improve thermal comfort of people training indoors. Training subjects were asked to evaluate themselves a number of different airflows. More specifically, human subjects were asked to exercise indoors using a cycling machine. At certain moments during this procedure airflows were introduced and subjects were asked to fill in a questionnaire concerning their thermal condition. This procedure was repeated for each of the airflows. This way, the impact of the three parameters mentioned above on the thermal condition of a subject training indoors could be evaluated. Before the experimental procedure described, the airflows to be experienced by the subjects had to be determined. Consequently, information about the pattern of the airflows created by various set-ups was gathered by recording and further analyzing the velocity value by time in different locations inside the airflows. Throughout this analysis, the most appropriate airflows for the experiments with human subjects were chosen. As reflected in the answers of the participants the introduction of the airflows had, in overall, a positive impact. Furthermore, the increase of the velocity and the turbulence intensity and the existence of power in frequencies higher than 0.1 Hz resulted in an increased cooling capacity. The increase in turbulence intensity and the existence of power in higher frequencies resulted, additionally, in a less pleasant for the subjects airflow. Based on the results, the optimum between the airflows could be selected as well. Subject thermal comfortairflowsindoor training To reference this document use: http://resolver.tudelft.nl/uuid:2643732c-04d1-48d1-85cd-be29c15ea43b Part of collection Student theses Document type master thesis Rights (c) 2016 Theodoridou, E. Files PDF MSc Thesis report_Elli Th ... oridou.pdf 6.84 MB Close viewer /islandora/object/uuid:2643732c-04d1-48d1-85cd-be29c15ea43b/datastream/OBJ/view