Influence of electrochromic glass window on light and heat environment and comprehensive energy consumption
摘要
In order to reduce the energy consumption of residential buildings, a comparison of the energy-saving effect between electrochromic (EC) glass, ordinary glass and low-radiation-coated glass (low-E glass) is carried out. An architectural model is established by a software called ‘Ecotect’ in this study. Taking residential buildings in the Jinan area of Shandong province as an example, the energy-saving effect of the three different windows is compared on indoor light and heat environment and comprehensive energy consumption. We have used EC as the test group. It is noted that the duration of indoor annual high and low temperatures is reduced by 61 and 50 h, the duration of annual thermal comfort is increased by 50 h, the average lighting coefficient is increased by 2.03%, and the annual comprehensive energy consumption is reduced by 593.581 kW h−1 when ordinary glass windows are used. What’s more, the duration of indoor annual high and low temperatures is reduced by 20 and 28 h, the duration of annual thermal comfort is increased by 23 h, the average lighting coefficient is increased by 0.81%, and the annual comprehensive energy consumption is reduced by 182.311 kW h−1 when low-E is used. The energy-saving effect of the EC is the best. It is shown that EC can adjust the indoor temperature, increase the indoor thermal comfort time, improve the indoor lighting situation and reduce the comprehensive energy consumption of the building, providing a reference value for the photothermal analysis and energy consumption analysis of residential buildings in the Shandong region.