Describes the network procedure for calculating the most energy-conserving and economical form of natural ventilation of a building. Provides application examples in the form of the determination of mass air flows through doors and windows and cracks in industrial work sheds. Provides the results of a calculation of crack ventilation in winter with mechanical ventilation with positive pressure, plus optimisation of air flow through a cooling bed for hot rolled steel sections.
Factsheet includes useful chart on glazing materials. Gives basic advice on limiting heat loss from doors and windows, together with recommendations for materials and installation, Also deals with the new hi tech windows using heat reflective film, and problems of condens- ation.
Draughtproofing the windows and external doors of UK dwellings can be an effective and relatively inexpensive means of comfort and reducing heat loss by natural ventilation. In most situations, draughtproofing is unlikely tocause any deterioration in the quality of indoor air. There are however a number of simple checks which should be made prior to installation to ensure that the ventilation requirements of the dwelling and its occupants are satisfied.
Describes laboratory tests to find correct operative conditions for a controlled outside air intake through the air space in the window to provide efficient ventilation without creating draughts.
The current industry standard for measuring air leakage of windows, curtain walls, and doors is ASTM E283. This test measures the ability of fenestration products to resist air leakage under ideal laboratory conditions which usually are at s
Gives detailed results of an extensive programme of wind tunnel testing of a standard scale model of a one-room, flat-roofed building. A major requirement was coverage of those characteristics of window openings or window accessories which were known (or which appeared) to have a significant effect on indoor air flow.
Many aspects of window performance cannot be adequately predicted from basic principles, hence a number of standard tests are evolving for evaluation of some of the primary ones. The tests are widely used in product standards, along with
This paper reports the results of measurements of inside surface temperatures on a basic double window arrangement consisting of two sheets of glass surrounded by insulated construction. Principal variables were air space width, height, and overall temperature difference. Carefully controlled natural convection conditions were provided on the warm side, with forced convection on the cold side. Results were also obtained for the average surface to surface thermal conductance of each configuration.
This report describes research undertaken to investigate the various factors affecting the air infiltration through windows. These factors examined include: 1) The effect of edge and face clearance or window fit 2) The effect of groove clearance on weatherstripping 3) The effect of weatherstripping 4) The effect of locking windows 5) A comparison of infiltration and exfiltration through windows 6) The effect of sash shrinkage, and 7) Theeffect of one-piece storm windows.
Air leakage characteristics of 192 new windows installed in new residential construction representative of those units commonly installed in the Minneapolis/St. Paul Metropolitan Area have been measured and evaluated. The tested windows represented all major operation types, window material types and manufacturers represented in this market segment. The air leakage data obtained in the field were compared to industry and government standards and manufacturers reports for reference.
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