Climate change has become a worldwide issue in recent years. As we all know, the earth is becoming warmer and warmer, and the greenhouse effect is getting worse everyday.
In order to address the impact of energy consumption on the climate change, Chinese government has proposed green and energy-conservation reforms that require building doors and windows to reduce 49% or more of energy consumption.
With the continuous improvement of living standards, house cooling and heating systems are increasingly used to create a suitable and comfortable living environment. As an important part of home decoration, high-end doors and windows have a great influence on the energy-saving performance of buildings, so become more and more popular.
High-end doors and windows are made from the heat-insulation broken bridge aluminum profiles or energy-saving hollow glass. Furthermore, they are energy-saving structures that require every component to work together as a whole. There are three key elements to measure the energy-saving performance of the high-end doors and windows, namely the circulation, conduction and radiation of the heat in air.
1)The hot and cold air circulate through the gaps of doors and windows, which exchanges heat by air convection, therefore resulting in heat loss.
2)Heat conduction is the molecular movement of materials that doors and windows are made from to transfer heat from one side to the other, the result of which can also lose heat.
3)The radiation primarily transmits heat ray directly, leading to the loss of heat during the course.
The performance of different materials is not the same. Different coefficients of thermal conductivity determine the energy consumption of doors and windows, so when you choose one material, the design of the profile cross-section is very important. Taking Al-alloy profiles for example, now a large number of customers only consider the cost of the products, and don’t pay attention to their performance.
In terms of energy saving, the thermal conductivity of ordinary Al-alloy profiles is very high, and the heat conduction is very fast, which are particularly remarkable in the cold north areas. There are indoor problems in winter, such as frost, dew, ice or water flow. These problems are not obvious in the south, but the air-conditioning energy consumption is very high.
“Hardware is the soul of doors and windows, not the supporting role.” The same is true for high-end doors and windows. Hardware plays a very important role in the high-end doors and windows. They are not only closely related to the airtightness, the watertightness and the wind load resistance, but also have great influence on the safety and other performances.
The above aspects are about the independent performance requirements of the components, but perfect high-end doors and windows must correctly combine a variety of components into a reasonable system. So, when choosing high-end doors and windows, it is very important to choose the strongest and most experienced manufacturers like JR MATERIALS LTD
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