Method for modifying old steel door and window sash into energy-saving and environment-friendly door and window

Abstract

The invention discloses a method for modifying an old steel door and window sash into an energy-saving and environment-friendly door and window. In the method for modifying the old steel door and window sash into the energy-saving and environment-friendly door and window, according to selected and used low-emissivity coated glass, on the premise that an original low-emissivity coated film layer is reserved, the transmittance of sunlight, especially near-infrared light in the sunlight is properly reduced by changing the thickness of other film layers, the reflection of the sunlight is improved, and the coated glass with low emissivity and a low shading coefficient is obtained. If selection is appropriate, the comprehensive energy-saving effect of the low-emissivity coated glass is very good to reflect most of the sunlight indoors, so that it is ensured that the situation that indoor heat is dissipated outdoors is prevented, and the heating cost is saved; in summer, the situation that heat radiation emitted by the outdoor ground and a building enters a room can be prevented, and the refrigeration cost of an air conditioner is saved, so that the electric charge expenditure of a family in the using process of the glass is reduced, and the economic burden of people in the using process is relieved; therefore, the glass is more energy-saving and environment-friendly.

Description

Technical field [0001] The present invention belongs to the field of doors and windows production, and is a method for reforming into energy-saving environmentally friendly doors and windows. Background technique [0002] Architecture, transportation, industry is the three major energy fields of the whole society. Building energy consumption accounts for one-third of total energy consumption, and the window is the opening area of ​​the building's peripheral structure. It is the "eyes" of architecture, and the window accounts for the entire building. Half of the half of the consumption, 80% of the window energy consumption is taken through glass, so vigorously developing energy-saving doors and windows is a key link to energy conservation and emission reduction. According to experts, if my country's 11 billion square meters of existing building area, the energy saving level of the doors and windows reaches the current standard of Europe, saving 420 million tons of coal coal every ...

AI Technical Summary

Problems solved by technology

[0003] However, common old steel doors and windows can only be discarded after use, which causes a great waste of resources. At the same time, common doors and windows are not good