Wind pressures on roofs with negative pitch.

Reports on experiments carried out on models with trough roofs in order to study the influence of parapet height and wind turbulence. The models were exposed to both turbulent shear flow and a smooth uniform flow. Pressure coefficients were c

Wind-tunnel measurements of surface pressures on cubic building models at several scales.

States that it is accepted practice to determine wind effects on and around a building by measurements in a scaled model in a boundary-layer wind tunnel. At large scales of reproduction it is impossible to simulate the entire depth of the atm

The impact of ventilation rates on the design of office buildings.

Reports on a study conducted to determine the impact of different ventilation rates on office building energy use, first cost, and peak electrical demand. Uses the DOE-2.1 computer program to simulate an energy-efficient office building in 5 cit

Computerized instrumented residential audit (CIRA)

Describes the computerized instrumented residential audit (CIRA), a collection of building energy analysis programs designed for a wide variety of microcomputers. Covers methods and type of input, and types of output produced.

Effects of air supply rates on space energy consumption.

Describes an analytical model used to study the effects of air supply rates on the dynamics of an occupied space as related to energy consumption and occupant's comfort. Reviews the concept of Air Diffusion Performance Criteria (ADPI) and uses it to derive air movement control strategies to reduce energy consumption in buildings. Discusses the relationship between the air movement control strategies and passive thermal control strategies for energy efficient buildings.

Ventilation rates in relation to emission of gases and vapours from building materials.

Uses mathematical models for formaldehyde concentrations in 3 normal rooms in a single family house to estimate ventilation rates needed to maintain the formaldehyde concentration below the Danish recommended indoor standard (0.15 mg/m*3). It appears that in an initial period after the house is finished, a ventilation rate more than 10 times the recommended Scandinavian value (0.5air changes/hr) is needed to keep the concentration below the indoor standard.

Research into the ventilation of dwellings - theory before practice. Forschung im Bereich der Wohnungs luftung - Theorie vor Praxis.

Gives a brief overview of:< 1. Measurement of air change rate using tracer gas.< 2. Measurement of air leakage using steady state and alternating pressure.< 3. Calculation methods (by hand and by computer) for predicting air exchange in a building.< Indicates where relevant research in these areas is being carried out, and outlines the role of the Air Infiltration Centre.

A predictive air infiltration model - long-term field test validation.

Describes a predictive model for air infiltration in residential structures. Uses wind speed and outdoor temperature data, along with selected building and site parameters to predict average infiltration. Presents long-term field validation results obtained in a portable test structure, together with long-term data from 3 unoccupied test houses at the Owens-Corning Technical Centre. Finds that the ratio between predicted and measured infiltration peaks near one in all comparisons. The estimated standard deviation of the ratios decreases with longer averaging times.

Update:ASHRAE TC 4.7. Simplified energy analysis procedure.

Gives a brief overview of energy-estimating procedures for energy conservation in buildings. States that most of these procedures are either too simplistic to provide the desired level of accuracy and comprehensiveness or they are too complex to gain widespread usage. Reports on the development of a comprehensive modified bin method for estimating building energy usage, created by the ASHRAE Technical Committee (TC) 4.7 for Energy Calculations. This procedure can lend itself for manual calculations and can be easily programmed into microcomputers.

An assessment of the accuracy of a home energy analysis system based on a modified TWOZONE computer model.

Investigates the accuracy of the TWOZONE computer auditing program (used in analyzing the energy performances of residences) when used with home-owner supplied data. Compares actual energy consumption data collected from houses in New Mexico with estimates obtained from the TWOZONE model using input data from occupant questionnaires. Finds a high degree of variability between predicted and observed values, and concludes that much of the error introduced into the prediction is attributable to the qualitative nature of the data supplied by the respondents.

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