The measurement of wind pressures on two-storey houses at Aylesbury.

Reports project to measure wind pressures on low-rise buildings. Describes site and houses in the estate selected for investigation. Gives details of an associated experimental building. Outlines positioning of the pressure transducers andgives details of the cabling and the reference pressure system. describes velocity measurement, recording equipment and methods of calibration, processing and analysis. Gives details of records taken in tabular form.

Fortran IV program to calculate air infiltration in buildings.

Describes computer program used to calculate air flows and pressure differential in a building as a result of a combination of wind effect, stack action and the operation of air handling systems. Describes mathematical model of building and the assumptions and limitations of program. Gives listing of complete program.

A review of the literature on the structure of wind turbulence, with special regard to its effect on buildings.

Gives short state-of-the-art review of knowledge of wind turbulence. Mentions results from field investigations. Summarizes available knowledge. An appendix discusses hot-wire anemometry. Gives bibliography of subject.

Air curtains for building entrances.

Studies influence on energy loss of an air curtain installed at building entrance. The energy loss consists of transmission loss and ventilation losses caused by stack effect, pressure difference due to wind, direct wind on the entrance and differences in the specific gravity of inside and outside air. Gives an example of calculated energy loss at the entrance of a simulated department store. Outlines principles and types of air curtain.

Wind profiles over a suburban site and wind effects on a half full-scale model building.

Discusses the problems of modelling natural wind in a wind tunnel and notes lack of comparison between full-scale and wind tunnel studies. Reviews past work which often shows marked discrepancies in wind tunnel data. Reports results of a study carried out in the field of wind effects on a half full-size single storey model building. Wind profiles over the site were measured and pressure effects experienced by the model recorded.

Engineering concept and design of controlling infiltration and traffic through entrances in tall commercial buildings.

The use in metropolitan cities of increasing numbers of skyscrapers in which stack effects are large and entrance traffic heavy calls for a better design of entrance for controlling both infiltration and traffic. Analyses the causes of infiltration, discusses the effect of various parameters, presents design charts for estimating heating and air conditioning loads through swinging-door and revolving-door entrances. Introduces a new design of entrance, the travelling entrance-way, and gives approximate method for calculation of air infiltration through it.

Effect of velocity distribution on wind loads on walls and low buildings.

Describes wind tunnel tests on cubical models with roof angles of 0, 15, 30 and 45 and on a wall placed in constant velocity and variable velocity air stream. Discusses the effect of velocity distribution on pressure distribution and wind loads. Presents results in the form of diagrams of pressure coefficients over the models.

Reduction of air infiltration due to window and door retrofits in an older home.

Reports a project to assess the value of weatherstripping windows and doors in a 30-year old home. Describes house and retrofitting technique using stainless steel weatherstrips. Air infiltration rates before and after retrofit were measured using three independent methods, tracer gas dilution using SF6,pressurization/depressurization for the whole house and depressurization of individual windows. Finds that air-change-rate for the whole house was reduced by 10-14.7%giving a predicted reduction of 15.5% for a complete retrofit which would result in an energy saving of 4-6%.

Residential energy requirements and opportunities for energy conservation.

Reports study of energy consumption of typical house in Texas. Computer-based model was used to simulate house under different conditions of insulation, infiltration, shading and operation. Gives tables of results of variation in energy use. Finds comparison between "wasteful" and "conservative" home. Shows 56% decrease in annual energy consumption.Concludes that energy saving measures would be cost-effective.

Experimental studies in natural ventilation of houses.

Describes experimental studies of the natural ventilation of four similar houses with different ventilating systems. Describes houses and gives experimental procedure and results of measurements of air-change-rates using hydrogen as a tracer gas.Shows variation in air-change-rates are due mainly to changes in wind speed and that wind direction and temperature difference are secondary factors. Estimates rate of heat loss as a functionof wind speed. Discusses relationship between measured pressure differences and wind speed and direction.

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