An innovative calculation methodology is proposed in this paper which retains the accuracy of sophisticated computer simulation programs, such as DOE 2.1, but maintains the simplicity of simplified building energy calculation methods, such as the Modified Bin method. The entire calculation procedure is discussed and followed by a full-scale experiment on a VAV (Variable Air Volume) system which successfully demonstrated its effectiveness. This method is now proposed to be adapted as the main p<ut of the national building energy code or PACS index in Taiwan
This paper deals with the internal environment of traditional excavated dwellings in Santoriniand the effect the conditions of the surrounding volcanic rock have on it. Three buildings weremonitored in the summer and winter and the results of the monitoring were used to simulatethe natural ventilation of the dwellings and calculate the amount of moisture which is releasedfrom the porous material of the walls. The study shows that the internal high relative humidityvalues are mainly due to this moisture release.
With increasing demand for acceptable indoor environment it is necessary, already in theconstruction phase, to estimate what effect different environmental factors have on theoccupants. Thermal sensation is affected by many factors of the indoor environment.Predictive models are available which describe overall thermal sensation as function of themost important factors. In this work reference environments have been investigated with athermal manikin. The results from these measurements are then compared to CFDpredictions.
This study is aimed to spread the intelligent design tool of ventilation in buildings and to improve indoor air quality (IAQ) in rooms. This paper describes two prototypes for diagnosing IAQ and ventilation calculation in rooms, by utilizing the technology of artificial intelligence, such as ES (Expert System), in which the data concerning ventilation design are summarized and the knowledge is presented in the form of production rule.
This paper reports the development of methods for calculating a ventilation performance metric that is a measure of the airflow pattern in a room or zone of a multi-zone ventilation system. Temporal mixing theory is used as the basis for these methods. The methods are applicable to all ventilated systems that can be modeled as a set of interconnected chambers. Relations between the ventilation performance metric defined in this paper and those defined previously are derived. The theoretical results of this paper are consistent with published experimental findings.
The paper presents the results of the research on application of the equation describing the increase in the air volume flux in buoyant plume above a point heat source to calculate plumes in rooms with displacement ventilation.The tests carried out in test room have given information about practical defining of the distance from the origin, assuming entrainment coefficient values and possibilities of assuming equal widths of temperature and velocity profiles in order to determine the origin distance.
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