Numerically predicts air quality and thermal comfort in 2-dimensional ventilated air spaces of several geometries when conditions on the various room surfaces are taken to be either adiabatic or constant temperature. 

Describes the results obtained and the problems encountered in the sealing and testing of 15 homes in Ottawa Ontario, for the Ontarion Ministry of Municipal Affairs and Housing. Gives a data summary for the 15 homes, outlining house characteristics, reductions in air leakage, materials and time needed. Finds that the average air leakage reduction is 38.7%, and the average time taken to perform the sealing and testing is 31 hrs. Covers:

Uses a similitude approach to develop predictive graphs for the ventilation rate due to the stack or chimney effect. Uses a half scale model of an open side wall structure with a continuous and restricted open ridge, and finds that:< 1. Ventilation rate is approximately proportional to ridge outlet width< 2. Outlet Reynolds number response ie ventilation rate to changes in Grashof number is a function of the ratio between building height and ridge width.

Compares the air change rates measured with SF6 and CO2 using the tracer gas decay technique and the fan extraction method over a wide variety of test chamber sizes and mixing systems. Shows that the conventional air handling orportable floor fans can provide adequate mixing for SF6 tracer gas decay measurements of infiltration. Warns that the mixing operation may become the dominant driving force of infiltration during calm climatic conditions. Finds that +-0.08 ach/h is a reasonable measure of experimental error at the 95%confidence level using SF6 as the tracer gas.

Presents results of an investigation aimed at working out thr design principles for natural ventilation conduits. Discusses results obtained in an aerodynamic wind tunnel.

Presents the results of an investigation carried out on behalf of the Swiss Ministry for Environmental Protection. The main aims were to find acalculation method for the annual energy demand of a building which takes into account solar heat gain and which generates data permitting the effect of thermal protection regulations on energy consumption to be evaluated. Treats the effect on transmission heat loss of outside walls of absorbed solar radiation, the specific heat loss of typical dwellings, reference years based on weather data for energy consumption calculations.

The second of two sections of a report of air change measurements in the winter period 1975/76 of non-air conditioned buildings in Switzerland, chiefly dwellings. Recapitulates the reasons for the research, the theoretical bases, measurement method used and aims of the experimental investigations. Sets outin tables detailed results of measurements carried out in a wide range of Swiss dwellings of different ages, locations, construction, design and type.

Presents the first of two sections of report 34020, detailing measurements carried out over the winter period of 1975/76 in Swiss dwellings with mainly hot water heating and some extract ventilation in kitchens and bathrooms. The aim of the research was to obtain a general picture of air change conditions in typical Swiss dwellings and to determine the effect of influencing parameters. The overall aim was to take a step towards the establishment of more surely founded rules of calculating ventilation heat loss as a function of influencing parameters.

Reviews a research project which has the objective of establishing:< 1. Expressions for ventilation efficiency< 2. Methods for measuring ventilation efficiency< 3. Rules for acheiving efficient ventilation.< Derives expressions for ventilati