The U.S. Departments of Energy and Defense (DOE and DOD) are jointly developing EnergyBase, a new building energy simulation tool that builds on the capabilities of BLAST and DOE-2.
The purpose of our research deals with the description of a methodology for the definition of specific weather sequences and their influence on the energy needs of HVAC system. We’ll apply the method on the tropical Reunion Island. The methodological approach based on a detailed analysis of weather sequences leads to a classification of climatic situations that can be applied to the site. These sequences have been used to simulate buildings and air handling systems thanks to a thermal simulation code, CODYRUN.
Stadium Australia is to be the centrepiece of the year 2000 Sydney Olympics. The architects aimed to minimise energy consumption by incorporating passive design measures which would provide ventilation, natural cooling and warming and daylight.
HOT2000™, a residential energy analysis program, is constantly under evolution. New models are added to the program and its user base is ever expanding. As such it is important to continuously validate the program and ensure that it will be useful in its intended markets. To this end, HOT2000™ has been run through the HERS BESTEST, a comparative testing method against other detailed simulation programs. This report outlines the cases modeled and the assumptions which were made.
Optimization and control of displacement ventilation systems in buildings require accurate modeling of aeraulic and thermal phenomena involved in the establishment or the destruction of thermal stratification in the room. We carried out an analysis and developed global models on the basis of data from the Poitiers "Laboratoire d’Etudes Thermiques" experimental facility (see Figure°2).
Within the framework of full-scale experimental validation of the global building energy simulation software programme CLIM2000, an experimentation has been carried out in a 100 m² real house from Oct 95 to May 96. First, we compare the simulated results with the experimental results. Then, we applied two different screening methods (sensitivity analysis) to the model in order to exhibit the most influent parameters and to calculate the output confidence interval (uncertainty analysis), and to compare the pertinence of each method in terms of results precision and calculation time.
New developments of both user-friendly interfaces and mathematical models have been added to the very known software package TRNSYS /2/, a transient system simulation program, during the last year. They respond to the growing application of this building and system simulation software for low energy building design by over 200 consulting companies in Germany
This paper explores a simulation-assisted building control strategy. Specifically, the use of generate-and test as well as bi-directional inference methods is proposed to derive preferable control schemes and required attributes for control variables based on parametric and iterative simulation runs. The feasibility of the approach is demonstrated via illustrative computational examples from the thermal control domain.
The numerical model for verification of various radon protective measures has been developed. This model is based on the partial differencial equation for the two-dimensional steady-state radon transport caused by diffusion and convection. The finite element method was used to obtain the numerical solution of the governing equation. The general finite element formulation was derived by means of the Petrov-Galerkin method with weighting functions different from interpolation functions. The performance of soil ventilation systems has been studied with this model.
This paper describes the methodology used in a simulation process that pretend to compare predicted and measured values. This process corresponds to one of the main task in a project denominated “Thermal Characterization of Passive Solar Construction in Portugal”. The aims of this two year project are to identify and quantify the thermal performance of those buildings. This study was carried out combining short measurements with a simulation tool.
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