Studies the predictive accuracies of infiltration-pressurization correlation models by subjecting a group of identical homes in Freehold NJ to both pressurization and tracer gas measurements of infiltration. Compares infiltration and pressurization test results. Uses four air infiltration models to predict the infiltration rates in the houses, and compares these predictions with the measured rates. Makes predictions using several different values of the inputs required for the models, and studies the effects of varying these inputs.
Long-term efforts in Belgian research has led to the development of computer models for energy consumption predictions. Describes some simplified methodologies to be used for quick analysis of situations, especially in 2 cases:< 1. The analysis of the impact of certain design options on the thermal and energy balance of a house.< 2.
Measures houses with energy efficient designs in Eugene, Oregon and Rochester (NY) for effective leakage area using blower door fan pressurization. Determines air change rates by tracer gas decay analysis. Makes fan pressurization measurements on 13 new houses in the San Francisco Bay area that have been partially sealed with polymeric foam sealant. Measures a similar group of 13 unsealed houses as a control. Uses the results of thesemeasurements in conjunction with an infiltration model developed at LBL to predict average annual and heating season infiltration rates.
Describes a programme undertaken by the AIC to validate mathematical models of air infiltration. Uses experimental data to assess the reliability and full range of applicability of air infiltration models, and to identify key parameters that
Descibes tests conducted by the Pacific Gas and Electric (PGE) and the Bonneville Power Administration (BPA) to evaluate cost effectiveness of certain retrofits. 20 houses in Walnut Creek CA underwent an air infiltration reduction program, simi
Discusses the second natural energy conservation program in Sweden implemented in 1980. This sets out to estimate the national energy saving potential, with special reference to existing housing. A refined method for calculation of energy sa
Describes a project carried out by the Bonneville Power Administration where 18 houses at its Midway substation in central Washington were retrofitted and the results monitored for a 3 year period. The houses were divided into 3 groups. During
Uses a two-region model to predict infiltration, to take into account non-ideal mixing of tracer gas in a building. Considers versions of this model:< 1. Fluid flows between the 2 regions and the environment in any manner provided steady state and mass balance are maintained.< 2. There is limited interchange between the regions< 3 Air flows into the first region and out of the second with (unbalanced) interchange between the two.< 4. The second region is a "dead-water" zone, which is not directly connected with the outside.<5.
Compares measurements of surface pressure and response on the CAARC standard tall building model, made at 6 establishments. In general, the degree of accuracy is good and mostly within the scatter of reasonable experimental accuracy. Observes small trends in respect of pressure measurements which could be attributed to differences in the approaching longitudinal velocity spectrum and to the requirement for blockage corrections. Finds no obvious trends in the dynamic response measurements, where the majority of the data compares within +-15%.
Explores the health implications, external and internal contributions, and the measurement of indoor air pollution including such subjects as sampling and analysis, calibration, time scale and interferences. Outlines the current status of prediction techniques, including areas such as one-compartment models, infiltration estimation, and empirical models. Summarizes the most common control methods. Examines, in detail, the application of modelling techniques to several typical indoor settings, for example, a restaurant, kitchen or a conference room with smokers.
Login