Night ventilation for cooling purposes: part I- reference building and simulation model

The aim of this study is to form the basis of a further analysis on night ventilation for cooling purposes in modern Swedish office buildings. An existíng Swedish office building with night ventilation has; been monitored and a complementary study on building energy end-uses with the help of the DOE-2 building simulation program. has been carried out. 

New techniques for validating building energy simulation programs

An Anglo-French collaborative project is presently under way with the dual purpose : a) to collect high quality data sets for the empirical validation of thermal simulation programs of buildings and b) to develop and test advanced data analysis techniques. The aim is to identify and remedy the causes of poor predictive -performance in thermal programs of buildings. Two data analyses are presented in this paper: one is a time-domain technique developed by the Energy Monitoring Company in UK, and the other is a frequency-domain technique developed by the University Paris 12, France.

Multizone modeling of three residential indoor air quality control options

The impact of central forced-air heating and cooling system modifications on the levels of selected pollutants in single-family houses was evaluated by simulating pollutant concentrations due to a variety of sources in eight houses with typical HVAC systems. Simulations were performed with a multizone airflow and pollutant transport model and were repeated with the systems modified to include an electrostatic particulate filter, a heat recovery ventilator, and an outdoor air intake damper.

Modelling of gas-fired boiler systems for building/HVAC plant simulation

The current models of boilers and furnaces which are used in HVAC system simulation programs are primarily concerned with calculating the heat output of the device and its fuel consumption. The formulation of the models relies heavily on empirical terms which are derived from manufacturers' data or testing programmes. 
Detailed simulation. of the combustion process involves solution of the flow-field. and chemical reaction rate equations by CFD simulation. The computational intensiveness involved renders this approach infeasible for integration into plant simulation. programs. 

Modelling and dimensioning a hot water floor heating system

The Centre Scientifique, et Technique du Bâtiment and Gaz-de-France carried out a comprehensive study for providing professionals with dimensioning rules for hot water floor heating systems. 
In the first phase we used a general purpose finite element analysis program called MARC and developed a three-dimensional mesh integrating the different floor heating components. 
In a second phase, simulation results were compared to an experimental result data set created for this study from a test cell specially dedicated to heating floor assessment. 

Modeling office buildings with DOE-2

DOE-2 is arguably the most complex and comprehensive building energy simulation program available. However, not even DOE-2 addresses ali situations encountered in commercial office buildings. Most buildings contain one or more of the following situations: 

Marketmanager for windows

Introduced in late 1993, MarketManager for Windows (MMWIN) is a productivity tool designed to meet the energy analysis needs of Utility DSM departments and of Performance Contractors. In a typical application a building is simulated as-is and compared to one or more energy-saving alternatives. 

Mappings for integrating design tools

The ability to integrate a range of disparate design tools has been an area of intense research throughout the world. One of the hardest tasks in this research has been to define the correspondences between the model of a building used by a design tool and the integrated data model. This paper presents a method of defining mappings between different models of a building. The implementation of a mapping management system which controls the flow of data between the varíous models and guarantees the consistency of the models is also described.

Manufactured housing walls that provide satisfactory moisture performance in all climates

We used the MOIST Computer Model to conduct a detailed analysis of the moisture performance of one wall typical of current construction practice in manufáctured housing, and mo new altemative wall designs with potential for better moisture performance in a wider variety of climates. The analysis showed that the current-practice wall with an interior vapor retarder performed acceptably in a cold climate (Madison, WI), but poorly in a hot and humid climate (Miami, FL).

Loanstar public domain software for data analysis and data viewing

An important aspect of the Texas LoanSTAR program has been the development of public domain software. These software are now available. 

 

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