Users' manual and documentation connected with computer program ENCORE. Program is based on weighting factor method. Provides general description of input data, building location and shape, heating system and building use.Describes in more detail standard output, error messages and warnings. Provides examples concerning warm-air heated house and house with electric space heating system. supplied detailed documentation of subroutines.
Calculations of the activity concentration of RaA (218 Po) in the air within living rooms and in the outside air were made at 87 dwellings in England and Scotland. From these measurements together with a determination of the ventilation rate existing in the room at the time of the measurements, the rate at which 222 Rn is emanating from room surfaces into room air in pci/l/h can be calculated.
Reports the results of three programmes of measurements of ventilation carried out in one-family houses, which in most cases were of the 'council house' type. The first programme measured ventilation rates using tracer gasin two houses room by room. Wind speed and direction were recorded but no general relation between ventilation and wind was found. The second measured ventilation rate in individual rooms in a house under six different wind conditions. The third measured ventilation rates in three identical homes.
Treats importance of keeping uncontrolled ventilation to a minimum in buildings equipped with balanced ventilation. Provides theoretical and experimental description of leakage of air past windows. Includes comparison between standards of different countries. Discusses effect on building ventilation of variations of wind and outdoor temperature. Considers in conclusion measurement of air flows between rooms in a building. Describes development of tracer gas method based on computer-assisted evaluation.
Discusses actual ventilation rates in small houses and the requirements of Swedish building regulations. States that regulations do not take a total view of the energy balance in small houses, and pay no regard to the interplay between different forces.< Discusses a newly built 1.5 storey house as an example. Outlines problems in ensuring a low air change rate.
Describes apparatus and experimental techniques for full and model scale measurements on test buildings. Discusses "blocking effect" of a large model in a small tunnel. Shows that model law derived in part one is valid forphenomena dependent on wind velocity. Compares model to full-scale tests. Discusses air flow around a house, pressure on walls and different types of roofs
Describes instrumentation used to measure air flow and pressure. Presents laws for turbulent and laminar flow in a wind tunnel. Reports model experiments to investigate the flow behind a solid screen and control experiments to check the model laws. Discusses measurements made at full scale on a school and on a model of the school. Describes experiments on the shelter behind houses and the dispersal of smoke from a chimney.
Describes computer program developed by BSRIA to predict ventilation rates and directions of air flow in buildings for given sets of conditions. These conditions are wind speed and direction, temperature differences between inside and outside the building, air leakage characteristics of the components and the mechanically induced air flow rates. The report is in the form of anoperating manual for the program.
Reports preliminary research directed towards developing a new method for measuring the air leakage property of an enclosure. The low-frequency acoustic impedance of the enclosure is measured by an infrasonic method. Describes and analyses a diaphram-type motor-driven source and a pressure sensor with electronic filters used to measure infrasonic impedance.< Reports tests run in enclosures of different volumes and degrees of leakiness.
Login