Double glazing

Note. In any building the above glazing areas may be doubled when double-glazing is used and trebled when triple glazing, or double-glazing with low-emissivity coating, is used. 

Thus, someone working near a window will receive hot solar radiation through the window in summer and cold radiation from the cold window surface in winter, causing uncomfortable radiant asymmetry even if the room temperature is perfect for personnel working away from the window. Ventilation will not be the correct solution for this problem - sun shading and double-glazing would be more effective. 

Double-glazed windows work on the same principle. It is important to avoid the coincidence of the resonant frequencies of the two elements, and hence it is usual to arrange for the glazing panels to have different thickness (and hence a different resonant frequency). This is not necessary if one element is sub-divided by glazing bars to give different-size panes to its opposing element. 

The reveals of a double-glazed window should be lined with acoustically absorbent material to damp the sound within the cavity. The width of the cavity should not be less than 150 mm. 

Double-glazed windows, grey tint, aluminum frame with thermal break. 

A double glazing was used as transparent insulation. Figure 173 shows some experimental results from an installation in a test building. 

Energy-efficient houses have been shown to have higher radon concentrations than others. In the Netherlands, for example, rooms with double-glazed windows were found to have radon concentrations twice as high as those in rooms with single-pane windows (Wolfs et al, 1984). New York energy-efficient houses with heat storage masses had radon concentrations 1.6 times those for conventional homes (Fleischer and Turner, 1984) and in Sweden the same enhancement in radon concentration is found (Nyblom, 1980). 

Sihca gel Drying of gases, refrigerants, organic solvents, transformer oils desiccant in packings and double glazing dew point control of natural gas. 

An important application of calcium peroxide is for curing the polysulfide sealants used in double-glazing window units. Calcium... 

Pennington and co-workers developed equations for prediction of the total heat gain through a double glazed window with drapes as a function of the transmissivity, reflectivity, and absorptivity of individual barriers, amounts of direct and diffuse solar... 

The most common cause of accidental poisoning with carbon monoxide is a fire, stove, or boiler that is inadequately ventilated. When it is lit, it produces the toxic gas which accumulates in the house, especially in modern homes which are often double-glazed and have little ventilation, and especially in the winter. One reason for poor ventilation may be birds nesting in the chimney, which decreases the availability of air. In a recent case a family lit a fire in a rented holiday cottage, but unbeknown to them the chimney had become blocked with a bird s nest, and all of them died of carbon monoxide poisoning. 

There are currently three grades of protection offered in the Double Glaze System. (The three digit number indicates the Lexgard panel s thickness.)... 

The new double-glazed system provides increased protection at a lighter weigh when compared to competitive products. 

Double Glazing (c = 0.1, coating on one of the surfaces of air space (surface 2 or 3, counting from the outside toward ... 

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