English

The main objectives are 1) the collection, processing and evaluation of leakage data for opening doors and windows, obtained from certifications or tests, 2) evaluation of the influence of building technologies and component materials on leakage, 3) experimental evaluation of the reasons for the choice of wall/frame combination and of the relative components and 4) experimental evaluation of the correlation between air leakage and sound insulation in order to define new methods of acoustic measurement of air leakage for components after installation.

To update the National Association of Home Builders Thermal Performance Guidelines, models were developed, representative of the new houses being constructed in each American state. The models define the number and types of windows and doors,

The Energy Signature Monitor (ESM), an innovative energy monitoring system, addresses the data acquisition and analysis demands of test programmes which require monitoring of large samples of buildings. It has been developed aspart of the Whole Building Evaluation System (WBES). Only a nominal number of sensors are required per test site, with less stringent sensor accuracy demands as compared to laboratory investigations. The aim is to provide an inexpensive user friendly system for use by non-technical personnel.

Describes a survey of standard homes built between 1907 and 1973, not fitted with double glazing, to assess potential draught gaps, and of consumer attitudes to insulating products particularly draught excluders.

The heating and cooling loads due to air infiltration may be estimated by a mathematical model that requires knowledge of the leakage characteristics of each component of the envelope. To extend the modelisation to the pitched roofs common in Portugal, characteristics of roofs were determined by a differential pressure method.

This paper explains the physics of air flow patterns, the aerodynamics of buildings and their implications for effective ventilation. Ventilation influenced design strategies of sunshading, daylighting and landscaping are discussed.

A survey of air flow patterns established in reliable laboratory experiments and field studies, with their original sources.

This paper presents a mathematical model, implemented in a general computer code, that can provide detailed information on the velocity and temperature fields prevailing in three-dimensional buildings of any geometrical complexity, for a given v

This paper deals with the concept of energy efficient houses as integrated systems. Quantitative analysis is used to show that evenly distributed insulation is more effective than excessive insulation applied to only one element of a house and that ventilation rates are a critical factor in determining the magnitude of energy loss. For a new approach to be adopted on a large scale, it is suggested that a means to implement Planned Change is required. Various models to bring about this change are discussed with an indication of the final recipe used for a demonstration project.

Use of computers for simulation of air flows in buildings, leading to production of a mathematical model for analysing the stability of ventilation systems subjected to external forces, and for simulation of heating systems toproduce a mathematical model of heat release and water flow in radiator systems. Investigation of fire ventilation.