The application of a radon model is useful to understand the processes that drive the radon gasbehaviour from its sources to its accumulation indoors. Since in a given inhabited house the detailedknowledge of the values of all the parameters that affect indoor radon levels is not available, theresponse of the model has to be explored in a reference site in which all the parameters are supposedto be known. We call this site the reference configuration.
As a series of our research on energy conservation and thermal comfort of detached houses havingcentralized HVAC systems, sensitivity analysis on feasibility of space cooling with outdoor air wasconducted using Design of Experiment(DOE). Effects of varied parameters on building thermal loadwere examined for five cities such as Tokyo and Osaka that have different weather conditions within themilder climate area of Japan.
Evidence suggests that a significant number of large highly-glazed spaces have major design flaws that lead to energy wastage and discomfort. Provision to control solar gains are generally insufficient in these buildings, which can lead to excessively high temperatures during the summer. Besides, the solutions implemented to overcome these issues usually have a high energy cost, whereas passive techniques may well limit these problems. This paper deals with design issues related to solar protections.
The thermal dynamic behaviour of buildings is solved by different methods; one of them is based on simulation by means of thermal node models. Computed results of the internal air temperature or the surface temperature are influenced by the used method, by the model for a solved problem situation, and by input values of model elements. The influence of the particular model element can be found by means of a sensitivity analysis.
This short article aims to inform modellers and model users about efficient sensitivity analysis methods. Also presented is a tool under development aimed at simplifying the application of sensitivity methods. Such techniques are essential to add confid
A summary of the evaluation of an air flow and contaminant model as part of the IEA-ECBCS Annex 23; Mullizone Airflow Modelling' is presented. Evaluation rather validation, is the goal. The most important points of the cases analyzed during this project are presented and commented from the point of view of analytical evaluation, comparison with experimental data and user sensitivity. The conclusion addresses the need for user-friendly tools and guidelines for the analysis of simulation output
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