The present study is directed toward an accurate analysis on the transport of sensible heat overa realistically shaped human body model by way of a coupled convection-radiation simulation technique. A low-Reynolds-number type k- e turbulence model is employed to obtain the convective heat flux distribution with greater accuracy. Configuration factors over the complex geometry are accurately calculated using a Monte-Carlo method incorporating symmetrization procedures.
To evaluate effect of indoor environment quality on productivity, the changes in cerebral bloodoxygenation by near infrared spectroscopy was examined. In this study, relationship between the changes in cerebral blood oxygenation and difficulty level of task was evaluated by subjective experiments. Four tasks were given to the subjects: single-digit addition, double-digit multiplication, triple-digit addition, and triple-digit multiplication. It was evaluated that the more difficult task types to solve, the more oxygenated hemoglobin and total hemoglobin concentration were needed.
Numerical prediction method in vehicle by using a thermoregulation model and CFD is described here. To achieve energy efficient car, not only improving efficiency of components like engineand compressor, but also reduction of cooling and heating load are very efficient. In this paper component to evaluate indoor thermal environment like automobile is described on recent our research results. All latest components are not combined yet perfectly. However, a thermoregulation model (65MN) combined with radiation exchange model and Computational Fluid Dynamics is mentioned.
Airflow characteristics in ventilated and air-conditioned spaces play an important role to attain comfort and hygiene conditions. This paper utilizes a 3D Computational Fluid Dynamics (CFD) model to assess the airflow characteristics in ventilated and air-conditioned archeological tombs of Egyptian Kings in the Valley of the Kings in Luxor, Egypt.
Temperature and humidity changes can affect building materials and the building structure (deformation or breakage). A research was carried out by a holographic interferometer.Thanks to those investigations of temperature and humidity deformation, it has been made possible to give recommendations on maintenance in Russian churches and cathedrals.
For that study, 200 children in Manchester were recruited to assess their asthma status, their indoor environment was analyzed. Levels of a variety of indoor agents, reported as important factors in the development or the exacerbation of respiratory troubles were examined. Results are presented.
This paper presents an overview of what is known related to particulate matter indoors. An information for understanding filtration is given along with the way how particles contribute to adverse health effects.
The aim of this paper is to investigate the effect of improved air distribution on symptoms and self-evaluated productivity in a landscape office in which the air was distributed with ventilated cooled beams. The intervention consisted of the improvement of evenness of the air distribution by installing an extra whirl diffuser at the end of every second cooled beam. As a consequence, the draught risk quantified by the draught rating model DR, was reduced to some extend.
One of the major sources of problems in dwellings -if not the main source- is moisture, especially due to surface and interstitial condensation on walls and roofs. For this reason, it seems important to evaluate the current standardisation and reference documents dealing with moisture and eventually to develop new assessment methods. This is the goal of the Belgian project "Moisture problems in roofs", carried out by BBRI, KUL, RUG and W&K. The first step is to collect a large number of indoor climate measurements in recently built dwellings built.
In this paper the methodological benefits and constraints of conventional climate chamber research in comparison to the field-based alternative are discussed. The discussion of methodology is extended to the discipline of environmental psychology and with a questionning on how engineers have come to dominate a research topic that falls so clearly within the scope of psychology.