house

Presents the extra costs in new housing of a number of measures designed to reduce space heating costs. The measures used to reduce energy consumption in new houses in Sakatoon were:< 1. airtightness with controlled ventilation< 2. superinsulation< 3. use of the south windows for passive solar gain.< States that results are applicable in most parts of the Canadian prairie.

Reports on an investigation concerning ventilation and energy conservation in dwellings, which was financed by the EEC and the Dutch Ministry for Housing and Public Works. Concludes that:< 1. In single family houses air flow through cracks and joints causes more ventilation then is required.< 2. Flats with more airtight construction provide better control of ventilation.< 3. The amount of wind protection plays a part as important as airtightness.< 4.

As part of a study by the Building Research Foundation on control methods for the thermal quality of homes, research has been carried out into the usefulness and consequences of a measuring method for the determination of the the airtightness of houses. Airtightness measurements were carried out in sixhouses. Data on occurring ventilation was already available from other research. It appears that the pressurization test for the airtightness of houses can be used to determine the thermal quality of the home.

Presents results of measurements of ventilation rates in the SEGAS test house. Describes the house and its heating and mechanical ventilation systems. Measurements of ventilation rates were made using helium as a tracer gas. Tests were made both with the house sealed to block obvious paths of infiltration and with it unsealed. Tests were also made with the house mechanically ventilated and with supply and extract systems working. Presents results of tests and examines the effect of variation in mean wind speed on ventilation rates.

Describes a sampling system developed to collect, analyze and identify organic contaminants in air over as wide a range of molecular carbon number range as possible. Describes sampling technique and reports results of sampling in 36homes in the Chicago area. Two samples were taken simultaneously inside and outside. Fifteen homes were sampled in both summer and winter.< Concludes that people are exposed to a wide range of organic compounds on average at concentrations of below 100ppb.

Reports the development of a small air-to-air rotary heat exchanger for residential applications in progress at Ontario Hydro Ltd. A prototype has been constructed and tested. Gives results of performance tests and the results of a numerical model for the solution of heat transfer equations as related to the prototype performance. States exchanger will be installed in aHUDAC conservation house.

Describes a covariance integration method for the determination of fluctuating overall structural loads due to wind and their effects on low rise buildings. The required aerodynamic information can be obtained from boundary-layer wind tunnel tests: static structural influence coefficients are also required. Themethod is an alternative to the direct on-line weighting technique, but is less demanding on wind tunnel instrumentation and data acquisition facilities. To obtain peak values, Gaussian probability distributions have been assumedfor the loads or their effects.

Describes further experiments from the wind tunnel simulation of wind pressures on the Aylesbury housing estate. These experiments are not concerned with the acquisition of further data, but are designed to examine the validity of measurements.< Discusses the effect of varying observation and averaging times. Reports results of experiments, varying these times, but finds no observable trends in the dispersion results.

Reports root mean square and extreme pressure measurements made on a model of the Aylesbury housing estate in the Oxford wind tunnel. Also presents a complete set of measurements on the test house alone, corresponding to the varied roof pitch records. Presents extreme value data in the form of a Fisher-Tippett type probability function.< Discusses design of the experiments, experimental procedures and results. Gives 47 tables comparing full scale with wind tunnel results. Includes results of wind tunnel measurements made at Bristol University.